mirror of
https://github.com/jaywcjlove/reference.git
synced 2025-06-17 20:51:21 +08:00
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15
.github/workflows/ci.yml
vendored
15
.github/workflows/ci.yml
vendored
@ -18,11 +18,26 @@ jobs:
|
||||
|
||||
- name: Generate Contributors Images
|
||||
uses: jaywcjlove/github-action-contributors@main
|
||||
id: contributors
|
||||
with:
|
||||
filter-author: (renovate\[bot\]|renovate-bot|dependabot\[bot\])
|
||||
output: dist/CONTRIBUTORS.svg
|
||||
avatarSize: 42
|
||||
|
||||
- name: Modify CONTRIBUTING.md
|
||||
uses: jaywcjlove/github-action-modify-file-content@main
|
||||
with:
|
||||
path: CONTRIBUTING.md
|
||||
body: |
|
||||
${{steps.contributors.outputs.htmlTable}}
|
||||
|
||||
- name: Modify README.md
|
||||
uses: jaywcjlove/github-action-modify-file-content@main
|
||||
with:
|
||||
path: README.md
|
||||
body: |
|
||||
${{steps.contributors.outputs.htmlList}}
|
||||
|
||||
- name: Create Tag
|
||||
id: create_tag
|
||||
uses: jaywcjlove/create-tag-action@main
|
||||
|
||||
@ -83,4 +83,49 @@ npm run build # 编译输出 HTML
|
||||
npm run start # 监听 md 文件编译输出 HTML
|
||||
```
|
||||
|
||||
- 或者你也可以使用 `pnpm` 或者 `yarn` 做为包管理器
|
||||
或者你也可以使用 `pnpm` 或者 `yarn` 做为包管理器
|
||||
|
||||
|
||||
## 贡献
|
||||
|
||||
请参阅[贡献指南](./CONTRIBUTING.md)了解如何开始。一如既往，感谢我们出色的贡献者！
|
||||
|
||||
<!--GAMFC--><a href="https://github.com/jaywcjlove" title="小弟调调™">
|
||||
<img src="https://avatars.githubusercontent.com/u/1680273?v=4" width="42;" alt="小弟调调™"/>
|
||||
</a>
|
||||
<a href="https://github.com/Jack-Zhang-1314" title="fw_qaq">
|
||||
<img src="https://avatars.githubusercontent.com/u/82551626?v=4" width="42;" alt="fw_qaq"/>
|
||||
</a>
|
||||
<a href="https://github.com/catcto" title="喵仙人">
|
||||
<img src="https://avatars.githubusercontent.com/u/5467932?v=4" width="42;" alt="喵仙人"/>
|
||||
</a>
|
||||
<a href="https://github.com/demigodliu" title="DemigodLiu">
|
||||
<img src="https://avatars.githubusercontent.com/u/30372735?v=4" width="42;" alt="DemigodLiu"/>
|
||||
</a>
|
||||
<a href="https://github.com/JetSquirrel" title="JetSquirrel">
|
||||
<img src="https://avatars.githubusercontent.com/u/20291255?v=4" width="42;" alt="JetSquirrel"/>
|
||||
</a>
|
||||
<a href="https://github.com/gaoxiaoduan" title="coderduan">
|
||||
<img src="https://avatars.githubusercontent.com/u/69953511?v=4" width="42;" alt="coderduan"/>
|
||||
</a>
|
||||
<a href="https://github.com/hweining" title="hweining">
|
||||
<img src="https://avatars.githubusercontent.com/u/8973985?v=4" width="42;" alt="hweining"/>
|
||||
</a>
|
||||
<a href="https://github.com/liliangrong777" title="liliangrong777">
|
||||
<img src="https://avatars.githubusercontent.com/u/58727146?v=4" width="42;" alt="liliangrong777"/>
|
||||
</a>
|
||||
<a href="https://github.com/onewesong" title="onewesong">
|
||||
<img src="https://avatars.githubusercontent.com/u/17920822?v=4" width="42;" alt="onewesong"/>
|
||||
</a>
|
||||
<a href="https://github.com/ryanhex53" title="ryanhex53">
|
||||
<img src="https://avatars.githubusercontent.com/u/360426?v=4" width="42;" alt="ryanhex53"/>
|
||||
</a>
|
||||
<a href="https://github.com/zxx-457" title="zxx-457">
|
||||
<img src="https://avatars.githubusercontent.com/u/114141362?v=4" width="42;" alt="zxx-457"/>
|
||||
</a><!--GAMFC-END-->
|
||||
|
||||
上图贡献者列表，由 [contributors](https://github.com/jaywcjlove/github-action-contributors) 自动生成贡献者图片。
|
||||
|
||||
## License
|
||||
|
||||
MIT © [Kenny Wong](https://github.com/jaywcjlove)
|
||||
|
||||
55
README.md
55
README.md
@ -23,6 +23,7 @@ Quick Reference
|
||||
[CMake](./docs/cmake.md)<!--rehype:style=background: rgb(92 107 192/var(\-\-bg\-opacity));&class=contributing-->
|
||||
[Django](./docs/djiango.md)<!--rehype:style=background: rgb(12 75 51/var(\-\-bg\-opacity));&class=contributing tag&data-lang=Python-->
|
||||
[FFmpeg](./docs/ffmpeg.md)<!--rehype:style=background: rgb(0 193 9/var(\-\-bg\-opacity));&class=contributing-->
|
||||
[LaTeX](./docs/latex.md)<!--rehype:style=background: rgb(0 128 128/var(\-\-bg\-opacity));&class=contributing-->
|
||||
[MATLAB](./docs/matlab.md)<!--rehype:style=background: rgb(0 118 168/var(\-\-bg\-opacity));&class=contributing-->
|
||||
[Vue 3 ](./docs/vue.md)<!--rehype:style=background: rgb(64 184 131/var(\-\-bg\-opacity));&class=contributing-->
|
||||
<!--rehype:class=home-card-->
|
||||
@ -31,6 +32,7 @@ Quick Reference
|
||||
|
||||
[Bash](./docs/bash.md)<!--rehype:style=background: rgb(72 143 223/var(\-\-bg\-opacity));-->
|
||||
[C](./docs/c.md)<!--rehype:style=background: rgb(92 107 192/var(\-\-bg\-opacity));-->
|
||||
[Dart](./docs/dart.md)<!--rehype:style=background: rgb(64 196 255/var(\-\-bg\-opacity));-->
|
||||
[Docker](./docs/docker.md)<!--rehype:style=background: rgb(72 143 223/var(\-\-bg\-opacity));-->
|
||||
[Dockerfile](./docs/dockerfile.md)<!--rehype:style=background: rgb(0 72 153/var(\-\-bg\-opacity));&class=tag&data-lang=Docker-->
|
||||
[Django](./docs/djiango.md)<!--rehype:style=background: rgb(12 75 51/var(\-\-bg\-opacity));&class=contributing tag&data-lang=Python-->
|
||||
@ -39,12 +41,14 @@ Quick Reference
|
||||
[INI](./docs/ini.md)<!--rehype:style=background: rgb(57 59 60/var(\-\-bg\-opacity));-->
|
||||
[JSON](./docs/json.md)<!--rehype:style=background: rgb(57 59 60/var(\-\-bg\-opacity));-->
|
||||
[Java](./docs/java.md)<!--rehype:style=background: rgb(211 55 49/var(\-\-bg\-opacity));&class=contributing&data-info=👆看看还缺点儿什么？-->
|
||||
[LaTeX](./docs/latex.md)<!--rehype:style=background: rgb(0 128 128/var(\-\-bg\-opacity));&class=contributing-->
|
||||
[Markdown](./docs/markdown.md)<!--rehype:style=background: rgb(103 61 156/var(\-\-bg\-opacity));-->
|
||||
[MySQL](./docs/mysql.md)<!--rehype:style=background: rgb(103 61 156/var(\-\-bg\-opacity));&class=tag&data-lang=SQL-->
|
||||
[MySQL](./docs/mysql.md)<!--rehype:style=background: rgb(1 117 143/var(\-\-bg\-opacity));&class=tag&data-lang=SQL-->
|
||||
[MATLAB](./docs/matlab.md)<!--rehype:style=background: rgb(0 118 168/var(\-\-bg\-opacity));&class=contributing-->
|
||||
[Python](./docs/python.md)<!--rehype:style=background: rgb(240 81 57/var(\-\-bg\-opacity));-->
|
||||
[PHP](./docs/php.md)<!--rehype:style=background: rgb(79 91 147/var(\-\-bg\-opacity));-->
|
||||
[Python](./docs/python.md)<!--rehype:style=background: rgb(43 91 132/var(\-\-bg\-opacity));-->
|
||||
[PostgreSQL](./docs/postgres.md)<!--rehype:style=background: rgb(43 109 163/var(\-\-bg\-opacity));&class=tag&data-lang=SQL-->
|
||||
[Ruby](./docs/ruby.md)<!--rehype:style=background: rgb(71 71 71/var(\-\-bg\-opacity));-->
|
||||
[Ruby](./docs/ruby.md)<!--rehype:style=background: rgb(204 52 45/var(\-\-bg\-opacity));-->
|
||||
[Rust](./docs/rust.md)<!--rehype:style=background: rgb(71 71 71/var(\-\-bg\-opacity));-->
|
||||
[Swift](./docs/swift.md)<!--rehype:style=background: rgb(240 81 57/var(\-\-bg\-opacity));-->
|
||||
[SwiftUI](./docs/swiftui.md)<!--rehype:style=background: rgb(10 127 247/var(\-\-bg\-opacity));&class=tag&data-lang=swift-->
|
||||
@ -147,17 +151,50 @@ Quick Reference
|
||||
[`我有一张备忘单(速查表)`](https://github.com/jaywcjlove/reference/blob/main/CONTRIBUTING.md)<!--rehype:class=home-button text-grey&target=__blank-->
|
||||
<!--rehype:style=margin-top:3rem-->
|
||||
|
||||
<!--rehype:ignore:start-->
|
||||
## 贡献
|
||||
## 感谢所有贡献者
|
||||
<!--rehype:wrap-style=text-align: center;max-width: 650px;margin: 0 auto;&class=home-title-reset-->
|
||||
|
||||
请参阅[贡献指南](./CONTRIBUTING.md)了解如何开始。一如既往，感谢我们出色的贡献者！
|
||||
请参阅 [Quick Reference](./docs/quickreference.md) 了解如何开始。一如既往，感谢我们出色的贡献者！
|
||||
<!--rehype:style=padding-bottom:1rem;-->
|
||||
|
||||
<a href="https://github.com/jaywcjlove/reference/graphs/contributors">
|
||||
<img src="https://jaywcjlove.github.io/reference/CONTRIBUTORS.svg" />
|
||||
<!--GAMFC--><a href="https://github.com/jaywcjlove" title="小弟调调™">
|
||||
<img src="https://avatars.githubusercontent.com/u/1680273?v=4" width="42;" alt="小弟调调™"/>
|
||||
</a>
|
||||
<a href="https://github.com/Jack-Zhang-1314" title="fw_qaq">
|
||||
<img src="https://avatars.githubusercontent.com/u/82551626?v=4" width="42;" alt="fw_qaq"/>
|
||||
</a>
|
||||
<a href="https://github.com/catcto" title="喵仙人">
|
||||
<img src="https://avatars.githubusercontent.com/u/5467932?v=4" width="42;" alt="喵仙人"/>
|
||||
</a>
|
||||
<a href="https://github.com/demigodliu" title="DemigodLiu">
|
||||
<img src="https://avatars.githubusercontent.com/u/30372735?v=4" width="42;" alt="DemigodLiu"/>
|
||||
</a>
|
||||
<a href="https://github.com/JetSquirrel" title="JetSquirrel">
|
||||
<img src="https://avatars.githubusercontent.com/u/20291255?v=4" width="42;" alt="JetSquirrel"/>
|
||||
</a>
|
||||
<a href="https://github.com/gaoxiaoduan" title="coderduan">
|
||||
<img src="https://avatars.githubusercontent.com/u/69953511?v=4" width="42;" alt="coderduan"/>
|
||||
</a>
|
||||
<a href="https://github.com/hweining" title="hweining">
|
||||
<img src="https://avatars.githubusercontent.com/u/8973985?v=4" width="42;" alt="hweining"/>
|
||||
</a>
|
||||
<a href="https://github.com/liliangrong777" title="liliangrong777">
|
||||
<img src="https://avatars.githubusercontent.com/u/58727146?v=4" width="42;" alt="liliangrong777"/>
|
||||
</a>
|
||||
<a href="https://github.com/onewesong" title="onewesong">
|
||||
<img src="https://avatars.githubusercontent.com/u/17920822?v=4" width="42;" alt="onewesong"/>
|
||||
</a>
|
||||
<a href="https://github.com/ryanhex53" title="ryanhex53">
|
||||
<img src="https://avatars.githubusercontent.com/u/360426?v=4" width="42;" alt="ryanhex53"/>
|
||||
</a>
|
||||
<a href="https://github.com/zxx-457" title="zxx-457">
|
||||
<img src="https://avatars.githubusercontent.com/u/114141362?v=4" width="42;" alt="zxx-457"/>
|
||||
</a><!--GAMFC-END-->
|
||||
|
||||
上图贡献者列表，由 [contributors](https://github.com/jaywcjlove/github-action-contributors) 自动生成贡献者图片。
|
||||
贡献者列表，由 [contributors](https://github.com/jaywcjlove/github-action-contributors) 自动生成
|
||||
<!--rehype:style=padding-top:1rem;-->
|
||||
|
||||
<!--rehype:ignore:start-->
|
||||
## License
|
||||
|
||||
MIT © [Kenny Wong](https://github.com/jaywcjlove)
|
||||
|
||||
@ -92,8 +92,9 @@ Min Hour Day Mon Weekday
|
||||
`问号(?)` | 可以代替“*”并允许用于月份和星期几。使用仅限于 cron 表达式中的 `月份中的某天` 或 `星期几`。
|
||||
<!--rehype:className=show-header auto-wrap-->
|
||||
|
||||
## Also see
|
||||
另见
|
||||
----
|
||||
|
||||
* [Devhints](https://devhints.io/cron) _(devhints.io)_
|
||||
* [Crontab Generator](https://crontab-generator.org/) _(crontab-generator.org)_
|
||||
* [Crontab guru](https://crontab.guru/) _(crontab.guru)_
|
||||
- [Devhints](https://devhints.io/cron) _(devhints.io)_
|
||||
- [Crontab Generator](https://crontab-generator.org/) _(crontab-generator.org)_
|
||||
- [Crontab guru](https://crontab.guru/) _(crontab.guru)_
|
||||
|
||||
@ -250,10 +250,10 @@ p:first-child {
|
||||
:- | :-
|
||||
`div.classname` | 具有特定类名的 div
|
||||
`div#idname` | 具有特定 ID 的 div
|
||||
`div p` | div 中的段落
|
||||
`div > p` | div 子节点中的所有 `P` 标签
|
||||
`div + p` | div 之后的 `P` 标签
|
||||
`div ~ p` | div 前面的 `P` 标签
|
||||
`div p` | div 中的所有段落
|
||||
`div > p` | 父元素是 div 的 `P` 标签
|
||||
`div + p` | div 之后的第一个同级 `P` 标签
|
||||
`div ~ p` | div 之后所有的同级 `P` 标签
|
||||
|
||||
另见: [相邻兄弟](https://developer.mozilla.org/zh-CN/docs/Web/CSS/Adjacent_sibling_combinator) / [通用兄弟](https://developer.mozilla.org/zh-CN/docs/Web/CSS/General_sibling_combinator) / [子](https://developer.mozilla.org/zh-CN/docs/Web/CSS/Child_combinator) 选择器
|
||||
|
||||
|
||||
598
docs/dart.md
Normal file
598
docs/dart.md
Normal file
@ -0,0 +1,598 @@
|
||||
Dart 备忘清单
|
||||
===
|
||||
|
||||
包含最重要概念、功能、方法等的 [Dart](https://dart.dev/) 备忘单。初学者的完整快速参考
|
||||
|
||||
入门
|
||||
-----
|
||||
|
||||
### 安装 Dart
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
#### Windows
|
||||
|
||||
```bash
|
||||
C:\> choco install dart-sdk # Windows
|
||||
```
|
||||
|
||||
#### Linux
|
||||
|
||||
执行以下一次性设置
|
||||
|
||||
```bash
|
||||
$ sudo apt-get update
|
||||
$ sudo apt-get install apt-transport-https
|
||||
$ wget -qO- https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo gpg --dearmor -o /usr/share/keyrings/dart.gpg
|
||||
$ echo 'deb [signed-by=/usr/share/keyrings/dart.gpg arch=amd64] https://storage.googleapis.com/download.dartlang.org/linux/debian stable main' | sudo tee /etc/apt/sources.list.d/dart_stable.list
|
||||
```
|
||||
|
||||
安装 Dart SDK
|
||||
|
||||
```bash
|
||||
$ sudo apt-get update
|
||||
$ sudo apt-get install dart
|
||||
```
|
||||
|
||||
#### Mac
|
||||
|
||||
```bash
|
||||
$ brew tap dart-lang/dart
|
||||
$ brew install dart
|
||||
```
|
||||
|
||||
### hello.dart
|
||||
|
||||
```dart
|
||||
// 应用执行开始的顶级函数
|
||||
void main() {
|
||||
print("Hello World!"); // 打印到控制台
|
||||
}
|
||||
```
|
||||
|
||||
每个应用程序都有一个 `main()` 函数
|
||||
|
||||
#### Windows
|
||||
|
||||
```bash
|
||||
$ dart compile exe hellow.dart
|
||||
$ time ./hello.exe
|
||||
Hello World!
|
||||
```
|
||||
|
||||
### 变量
|
||||
|
||||
```dart
|
||||
int x = 2; // 显式键入
|
||||
var p = 5; // 类型推断 - 具有类型推断的通用var
|
||||
dynamic z = 8; // 变量可以采用任何类型
|
||||
z = "cool"; // cool
|
||||
|
||||
// 如果您从不打算更改变量，请使用 final 或 const
|
||||
// 像这样的东西：
|
||||
final email = "temid@gmail.com";
|
||||
// 与 var 相同，但不能重新分配
|
||||
final String email = "temid@gmail.com";
|
||||
// 你不能改变价值
|
||||
const qty = 5; // 编译时常数
|
||||
```
|
||||
|
||||
### 数据类型
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```dart
|
||||
// 整数，范围 -2^63 到 2^63 - 1
|
||||
int age = 20;
|
||||
// 浮点数字
|
||||
|
||||
double height = 1.85;
|
||||
// 您还可以将变量声明为 num
|
||||
// x 可以同时具有 int 和 double 值
|
||||
num x = 1;
|
||||
num += 2.5;
|
||||
print(num); // 打印: 3.5
|
||||
|
||||
String name = "Nicola";
|
||||
bool isFavourite = true;
|
||||
bool isLoaded = false;
|
||||
```
|
||||
|
||||
### 注释
|
||||
|
||||
```dart
|
||||
// 这是一条正常的单行注释
|
||||
/// 这是一个文档注释，用于文档库，
|
||||
/// 类及其成员。 IDE 和 dartdoc 等工具
|
||||
/// doc 特别注释。
|
||||
/* 也支持此类注释 */
|
||||
```
|
||||
|
||||
### 字符串插值
|
||||
|
||||
```dart
|
||||
// 可以对字符串类型使用单引号或双引号
|
||||
var firstName = 'Nicola';
|
||||
var lastName = "Tesla";
|
||||
// 可以用 $ 将变量嵌入到字符串中
|
||||
String fullName = "$firstName $lastName";
|
||||
// 与 + 连接
|
||||
var name = "Albert " + "Einstein";
|
||||
String upperCase = '${firstName.toUpperCase()}';
|
||||
print(upperCase); // 打印: NICOLA
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 导入 Imports
|
||||
|
||||
```dart
|
||||
// 导入核心库
|
||||
import 'dart:math';
|
||||
// 从外部包导入库
|
||||
import 'package:test/test.dart';
|
||||
// 导入文件
|
||||
import 'path/to/my_other_file.dart';
|
||||
```
|
||||
|
||||
操作符
|
||||
-------
|
||||
|
||||
### 算术运算符
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```dart
|
||||
print(2 + 3); // 打印: 5
|
||||
print(2 - 3); // 打印: -1
|
||||
print(2 * 3); // 打印: 6
|
||||
print(5 / 2); // 打印: 2.5 - 结果是 double
|
||||
print(5 ~/ 2); // 打印: 2 - 结果是n int
|
||||
print(5 % 2); // 打印: 1 - 余
|
||||
int a = 1, b;
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
```dart
|
||||
// 增
|
||||
b = ++a; // 前增量 - 在 b 获得其值之前增加 a
|
||||
b = a++; // 后增量 - 在 b 获得它的值之后增加 a
|
||||
// 递
|
||||
b = --a; // 前减量 - 在 b 获得它的值之前减少 a
|
||||
b = a--; // 后减量 - 在 b 获得它的值之后递减 a
|
||||
```
|
||||
|
||||
### 逻辑运算符
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```dart
|
||||
// !expr 反转表达式（将 false 更改为 true，反之亦然）
|
||||
// || 逻辑或
|
||||
// && 逻辑与
|
||||
bool isOutOfStock = false;
|
||||
int quantity = 3;
|
||||
if (!isOutOfStock && (quantity == 2 || quantity == 3)) {
|
||||
// ...Order the product...
|
||||
}
|
||||
```
|
||||
|
||||
### 等式和关系运算符
|
||||
|
||||
```dart
|
||||
print(2 == 2); // 打印: true - 平等的
|
||||
print(2 != 3); // 打印: true - 不相等
|
||||
print(3 > 2); // 打印: true - 比...更棒
|
||||
print(2 < 3); // 打印: true - 少于
|
||||
print(3 >= 3); // 打印: true - 大于或等于
|
||||
print(2 <= 3); // 打印: true - 小于或等于
|
||||
```
|
||||
|
||||
控制流：条件
|
||||
------
|
||||
|
||||
### if 和 else if
|
||||
|
||||
```dart
|
||||
if(age < 18){
|
||||
print("Teen");
|
||||
} else if( age > 18 && age <60){
|
||||
print("Adult");
|
||||
} else {
|
||||
print("Old");
|
||||
}
|
||||
```
|
||||
|
||||
### switch case
|
||||
|
||||
```dart
|
||||
enum Pet {dog, cat}
|
||||
Pet myPet = Pet.dog;
|
||||
switch(myPet){
|
||||
case Pet.dog:
|
||||
print('My Pet is Dog.');
|
||||
break;
|
||||
case Pet.cat:
|
||||
print('My Pet is Cat.');
|
||||
break;
|
||||
default:
|
||||
print('I don\'t have a Pet');
|
||||
}
|
||||
// 打印: My Pet is Dog.
|
||||
```
|
||||
|
||||
控制流：循环
|
||||
-----
|
||||
|
||||
### while 循环
|
||||
|
||||
```dart
|
||||
while (!dreamsAchieved) {
|
||||
workHard();
|
||||
}
|
||||
```
|
||||
|
||||
循环迭代之前的 `while` 循环检查条件
|
||||
|
||||
### do-while 循环
|
||||
|
||||
```dart
|
||||
do {
|
||||
workHard();
|
||||
} while (!dreamsAchieved);
|
||||
```
|
||||
|
||||
`do-while` 循环在执行循环内的语句后验证条件
|
||||
|
||||
### for 循环
|
||||
|
||||
```dart
|
||||
for(int i=0; i< 10; i++){
|
||||
print(i);
|
||||
}
|
||||
var numbers = [1,2,3];
|
||||
// 列表的 for-in 循环
|
||||
for(var number in numbers){
|
||||
print(number);
|
||||
}
|
||||
```
|
||||
|
||||
Collections
|
||||
------------
|
||||
|
||||
### Lists
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```dart
|
||||
// 有序的对象组
|
||||
var list = [1, 2, 3];
|
||||
print(list.length); //Print: 3
|
||||
print(list[1]); //Print: 2
|
||||
// 列表声明和初始化的其他方式
|
||||
List<String> cities = <String>["New York", "Mumbai", "Tokyo"];
|
||||
// 创建一个编译时常量的列表
|
||||
const constantCities = const ["New York", "Mumbai", "Tokyo"];
|
||||
```
|
||||
|
||||
### Maps
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```dart
|
||||
// 映射是关联键和值的对象
|
||||
var person = Map<String, String>();
|
||||
// 要初始化地图，请执行以下操作：
|
||||
person['firstName'] = 'Nicola';
|
||||
person['lastName'] = 'Tesla';
|
||||
print(person);
|
||||
// 打印: {firstName:Nicola, lastName:Tesla}
|
||||
print(person['lastName']);
|
||||
// 打印: Tesla
|
||||
|
||||
var nobleGases = {
|
||||
// Key: Value
|
||||
2: 'helium',
|
||||
10: 'neon',
|
||||
18: 'argon',
|
||||
};
|
||||
```
|
||||
|
||||
### Sets
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```dart
|
||||
// Dart 中的集合是唯一项的无序集合
|
||||
var halogens = {'fluorine', 'chlorine', 'bromine', 'iodine', 'astatine'};
|
||||
// 创建一个空集
|
||||
var names = <String>{};
|
||||
Set<String> names = {}; // 这也有效
|
||||
//var names = {}; // 创建地图，而不是集合
|
||||
```
|
||||
|
||||
函数
|
||||
------
|
||||
|
||||
### 函数示例
|
||||
|
||||
```dart
|
||||
// dart 中的函数是对象并且有一个类型
|
||||
int add(int a, int b){
|
||||
return a+b;
|
||||
}
|
||||
// 函数可以分配给变量
|
||||
int sum = add(2,3); // 回报：5
|
||||
// 可以作为参数传递给其他函数
|
||||
int totalSum = add(2, add(2,3)); // 返回：7
|
||||
```
|
||||
|
||||
### 箭头语法 (=>)
|
||||
|
||||
```dart
|
||||
// 只包含一个表达式的函数，您可以使用简写语法
|
||||
bool isFav(Product product) => favProductsList.contains(product);
|
||||
```
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
### Anonymous (lambda) functions
|
||||
|
||||
```dart
|
||||
// 没有名字的小单行函数
|
||||
int add(a,b) => a+b;
|
||||
// lambda 函数大多作为参数传递给其他函数
|
||||
const list = [
|
||||
'apples', 'bananas', 'oranges'
|
||||
];
|
||||
|
||||
list.forEach(
|
||||
(item) =>
|
||||
print('${list.indexOf(item)}: $item')
|
||||
);
|
||||
// 打印: 0: apples 1: bananas 2: oranges
|
||||
```
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
类和对象
|
||||
----------
|
||||
|
||||
### 类 Class
|
||||
|
||||
```dart
|
||||
class Cat {
|
||||
String name;
|
||||
// 方法
|
||||
void voice(){
|
||||
print("Meow");
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### 对象 Object
|
||||
|
||||
```dart
|
||||
// 类的实例
|
||||
// 在 myCat 下面是 Cat 类的对象
|
||||
void main(){
|
||||
Cat myCat = Cat();
|
||||
myCat.name = "Kitty";
|
||||
myCat.voice(); // 打印: Meow
|
||||
}
|
||||
```
|
||||
|
||||
### 构造函数
|
||||
|
||||
```dart
|
||||
class Cat {
|
||||
String name;
|
||||
Cat(this.name);
|
||||
}
|
||||
void main(){
|
||||
Cat myCat = Cat("Kitty");
|
||||
print(myCat.name); // 打印: Kitty
|
||||
}
|
||||
```
|
||||
|
||||
### 抽象类
|
||||
|
||||
```dart
|
||||
// 抽象类——不能实例化的类
|
||||
// 这个类被声明为抽象的，因此不能被实例化
|
||||
abstract class AbstractContainer {
|
||||
// 定义构造函数、字段、方法...
|
||||
void updateChildren(); // 抽象方法
|
||||
}
|
||||
```
|
||||
|
||||
### Getters Setters
|
||||
|
||||
```dart
|
||||
// 提供对对象属性的读写访问
|
||||
class Cat {
|
||||
String name;
|
||||
// getter
|
||||
String get catName {
|
||||
return name;
|
||||
}
|
||||
// setter
|
||||
void set catName(String name){
|
||||
this.name = name;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
隐式接口
|
||||
------------
|
||||
|
||||
### 一个基本的界面
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```dart
|
||||
// 一个人。隐式接口包含 greet()。
|
||||
class Person {
|
||||
// 在接口中，但仅在此库中可见。
|
||||
final String _name;
|
||||
// 不在接口中，因为这是一个构造函数。
|
||||
Person(this._name);
|
||||
// 在接口中
|
||||
String greet(String who) => 'Hello, $who. I am $_name.';
|
||||
}
|
||||
// Person 接口的实现。
|
||||
class Impostor implements Person {
|
||||
String get _name => '';
|
||||
String greet(String who) => 'Hi $who. Do you know who I am?';
|
||||
}
|
||||
String greetBob(Person person) => person.greet('Bob');
|
||||
void main() {
|
||||
print(greetBob(Person('Kathy')));
|
||||
// 打印: Hello, Bob. I am Kathy.
|
||||
print(greetBob(Impostor()));
|
||||
// 打印: Hi Bob. Do you know who I am?
|
||||
}
|
||||
```
|
||||
|
||||
### 扩展类
|
||||
|
||||
```dart
|
||||
class Phone {
|
||||
void use(){
|
||||
_call();
|
||||
_sendMessage();
|
||||
}
|
||||
}
|
||||
// 使用 extends 创建子类
|
||||
class SmartPhone extends Phone {
|
||||
void use(){
|
||||
// 使用 super 来引用超类
|
||||
super.use();
|
||||
_takePhotos();
|
||||
_playGames();
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
异常
|
||||
-----
|
||||
|
||||
### Throw
|
||||
|
||||
```dart
|
||||
// 抛出 throws 或引发 raises 和异常 exception
|
||||
throw IntegerDivisionByZeroException();
|
||||
// 你也可以抛出任意对象
|
||||
throw "Product out of stock!";
|
||||
```
|
||||
|
||||
### Catch
|
||||
|
||||
```dart
|
||||
try {
|
||||
int c = 3/0;
|
||||
print(c);
|
||||
} on IntegerDivisionByZeroException {
|
||||
// 一个特定的异常
|
||||
print('Can not divide integer by 0.')
|
||||
} on Exception catch (e) {
|
||||
// 任何其他异常情况
|
||||
print('Unknown exception: $e');
|
||||
} catch (e) {
|
||||
// 没有指定类型，处理所有
|
||||
print('Something really unknown: $e');
|
||||
}
|
||||
```
|
||||
|
||||
### Finally
|
||||
|
||||
```dart
|
||||
// 确保某些代码无论是否抛出异常都能运行
|
||||
try {
|
||||
cookFood();
|
||||
} catch (e) {
|
||||
print('Error: $e'); // 先处理异常
|
||||
} finally {
|
||||
cleanKitchen(); // 然后清理
|
||||
}
|
||||
```
|
||||
|
||||
Futures
|
||||
------------
|
||||
|
||||
### Async Await
|
||||
|
||||
```dart
|
||||
// 异步函数：它们在设置可能耗时的操作后返回
|
||||
// async 和 await 关键字支持异步编程
|
||||
Future<String> login() {
|
||||
String userName="Temidjoy";
|
||||
return
|
||||
Future.delayed(
|
||||
Duration(seconds: 4), () => userName
|
||||
);
|
||||
}
|
||||
// 异步
|
||||
main() async {
|
||||
print('Authenticating please wait...');
|
||||
print(await userName());
|
||||
}
|
||||
```
|
||||
|
||||
各种各样的
|
||||
------------
|
||||
|
||||
### Null 和 Null 感知
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```dart
|
||||
int x; // 任何对象的初始值为 null
|
||||
// ?? 空感知运算符
|
||||
x ??=6; // ??= 赋值运算符，仅当变量当前为 null 时才为其赋值
|
||||
print(x); // 打印: 6
|
||||
x ??=3;
|
||||
print(x); // 打印: 6 - 结果仍然是 6
|
||||
print(null ?? 10); // 打印: 10。如果不为空，则显示左侧的值，否则返回右侧的值
|
||||
```
|
||||
|
||||
### 三元运算符
|
||||
|
||||
```dart
|
||||
// 条件 ? 条件如果为真 : 条件如果为假
|
||||
bool isAvailable;
|
||||
isAvailable ? orderproduct() : addToFavourite();
|
||||
```
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
### 条件属性访问
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```dart
|
||||
userObject?.userName
|
||||
// 上面的代码片段等效于以下代码：
|
||||
(userObject != null) ? userObject.userName : null
|
||||
// 您可以将 ? 的多种用途链接起来。一起在一个表达式中
|
||||
userObject?.userName?.toString()
|
||||
// 如果 userObject 或 userObject.userName 为 null，则前面的代码返回 null 并且从不调用 toString()
|
||||
```
|
||||
|
||||
### 级联符号 (..)
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```dart
|
||||
// 允许您对同一对象进行一系列操作
|
||||
// 而不是这样做
|
||||
var user = User();
|
||||
user.name = "Nicola";
|
||||
user.email = "nicola@g.c";
|
||||
user.age = 24;
|
||||
// 你可以这样做
|
||||
var user = User()
|
||||
..name = "Nicola"
|
||||
..email = "nicola@g.c"
|
||||
..age = 24;
|
||||
```
|
||||
|
||||
### 扩展运算符 (...)
|
||||
|
||||
```dart
|
||||
// 将多个值插入到集合中
|
||||
var list = [1, 2, 3];
|
||||
var list2 = [0, ...list];
|
||||
print(list2.length); // 打印: 4
|
||||
```
|
||||
|
||||
另见
|
||||
----
|
||||
|
||||
- [Dart 官方文档](https://dart.dev/) _(dart.dev)_
|
||||
224
docs/ffmpeg.md
224
docs/ffmpeg.md
@ -121,33 +121,17 @@ $ ffmpeg -i movie.webm movie.mp4
|
||||
---
|
||||
<!--rehype:body-class=cols-2-->
|
||||
|
||||
### 裁剪
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
### 剪切视频部分
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i <input> -filter:v "crop=640:480:100:25" <output>
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
通过从输入视频中复制偏移 `x=100px` `y=25px` 的相应窗口来创建 `640x480` 大小的输出视频
|
||||
|
||||
```bash
|
||||
# 裁剪到宽度 360，高度 640
|
||||
$ ffmpeg -i input.mov -filter:v 'crop=360:640:0:0' -codec:a copy output.mov
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
裁剪到宽度 360，高度 640，从坐标 (10, 20) 开始
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i input.mov -filter:v 'crop=360:640:10:20' -codec:a copy output.mov
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 缩放
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i <输入> -vf scale=640:480 <输出>
|
||||
# 从1分45秒开始剪切2分35秒
|
||||
$ ffmpeg -i <input> -ss 00:01:45 -t 00:02:35 -vcodec copy -acodec copy <output>
|
||||
# 从1分45秒开始剪切到第4分20秒，与上一行等效
|
||||
$ ffmpeg -i <input> -ss 00:01:45 -to 00:04:20 -codec copy <output>
|
||||
$ ffmpeg -ss 00:00:30 -i orginalfile.mpg -t 00:00:05 -vcodec copy -acodec copy newfile.mpg
|
||||
# 从 4.5 秒开始的 5 秒长的视频
|
||||
$ ffmpeg -i in.mp4 -ss 4.5 -t 5 out.mp4
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
@ -165,20 +149,6 @@ $ ffmpeg -r 1 -i input.m2v -r 24 output.avi
|
||||
|
||||
将输入文件的帧速率(仅对原始格式有效)强制为 1 fps，将输出文件的帧速率强制为 24 fps
|
||||
|
||||
### 剪切视频部分
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```bash
|
||||
# 从1分45秒开始剪切2分35秒
|
||||
$ ffmpeg -i <input> -ss 00:01:45 -t 00:02:35 -vcodec copy -acodec copy <output>
|
||||
# 从1分45秒开始剪切到第4分20秒，与上一行等效
|
||||
$ ffmpeg -i <input> -ss 00:01:45 -to 00:04:20 -codec copy <output>
|
||||
$ ffmpeg -ss 00:00:30 -i orginalfile.mpg -t 00:00:05 -vcodec copy -acodec copy newfile.mpg
|
||||
# 从 4.5 秒开始的 5 秒长的视频
|
||||
$ ffmpeg -i in.mp4 -ss 4.5 -t 5 out.mp4
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### H265 2-pass 编码
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
@ -212,14 +182,6 @@ $ ffmpeg -i <input> -c copy -metadata:s:v:0 rotate=90 <output>
|
||||
|
||||
不要为旋转重新编码，而是简单地为旋转角度添加一个视频元数据字段
|
||||
|
||||
### 放慢视频速度
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i in.mp4 -filter:v "setpts=4.0*PTS" out.mp4
|
||||
```
|
||||
|
||||
使用过滤器减慢视频。 此示例将视频减慢四倍
|
||||
|
||||
### 缩放到特定宽度
|
||||
|
||||
```bash
|
||||
@ -240,23 +202,6 @@ $ ffmpeg -i file.mp4 -vn -c copy output.aac
|
||||
|
||||
`-vn` (过滤视频)，使用 `-c copy`，不会重新解码和编码，加快速度。
|
||||
|
||||
### 创建缩略图
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
在 10 秒时创建一个缩略图
|
||||
|
||||
```bash
|
||||
$ ffmpeg -ss 10 -i <input file> -vframes 1 -vcodec png -an thumb.png
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
例如，要每 `n` 秒创建一次缩略图，请使用 `-vf fps=1/n`
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i <input file> -vf fps=1/60 thumbnails/thumb%03d.png
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 提取视频流
|
||||
|
||||
```bash
|
||||
@ -289,6 +234,13 @@ $ ffmpeg -i file.aac -acodec mp3 -ar 44100 -ab 128000 output.mp3
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 将输入文件转码为 DVD PAL 格式
|
||||
|
||||
```bash
|
||||
$ ffmpeg -y -threads 8 -i inFile -target pal-dvd -ac 2 -aspect 16:9 -acodec mp2 -ab 224000 -vf pad=0:0:0:0 outFile
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### -map 命令
|
||||
<!--rehype:wrap-class=col-span-2 row-span-2-->
|
||||
|
||||
@ -399,10 +351,19 @@ $ ffmpeg -hide_banner -loglevel error -stats -f gdigrab -framerate 60 \
|
||||
$ ffmpeg -f avfoundation -i 1:0 -preset ultrafast out.mkv
|
||||
```
|
||||
|
||||
### 将输入文件转码为 DVD PAL 格式
|
||||
### 合并音频与图片
|
||||
|
||||
合并多个音频，自定义背景图片，生成视频音乐
|
||||
|
||||
```bash
|
||||
$ ffmpeg -y -threads 8 -i inFile -target pal-dvd -ac 2 -aspect 16:9 -acodec mp2 -ab 224000 -vf pad=0:0:0:0 outFile
|
||||
# mylist.txt >>>
|
||||
file '1.mp3'
|
||||
file '2.mp3'
|
||||
file '3.mp3'
|
||||
|
||||
# OBS: 46500 = 25:50 minutes * 60 * 30fps
|
||||
# echo "00:25:50" | awk -F: '{ print (($1 * 3600) + ($2 * 60) + $3) * 30 }'
|
||||
$ ffmpeg -y -loop 1 -i cover.jpg -f concat -i mylist.txt -c:v libx264 -r 30 -pix_fmt yuv420p -vframes 46500 -c:a aac -b:a 192k -strict experimental -shortest output.mp4
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
@ -569,7 +530,7 @@ $ ffmpeg -i audioS.mp4 -i videoS.mp4 -c copy -map 0:a -map 1:v outFile.mp4
|
||||
|
||||
### 合并视频
|
||||
|
||||
<!--rehype:wrap-class=col-span-2 row-span-3-->
|
||||
<!--rehype:wrap-class=col-span-3 row-span-3-->
|
||||
|
||||
合并相同规格(解码/分辨率/帧率)视频
|
||||
|
||||
@ -618,29 +579,44 @@ $ ffmpeg -f concat -i mylist.txt -c:v copy -c:a flac -strict -2 output.mp4
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 合并音频与图片
|
||||
视频过滤器
|
||||
---
|
||||
|
||||
合并多个音频，自定义背景图片，生成视频音乐
|
||||
### 格式
|
||||
|
||||
如果一个 fliter 有多个参数，需要使用 `,` 分隔
|
||||
|
||||
```bash
|
||||
# mylist.txt >>>
|
||||
file '1.mp3'
|
||||
file '2.mp3'
|
||||
file '3.mp3'
|
||||
$ ffmpeg -i test.avi -c:v libx264 -vf "scale=1024:-1,transpose=1,crop=iw/3:ih/3" output.mp4
|
||||
```
|
||||
|
||||
# OBS: 46500 = 25:50 minutes * 60 * 30fps
|
||||
# echo "00:25:50" | awk -F: '{ print (($1 * 3600) + ($2 * 60) + $3) * 30 }'
|
||||
$ ffmpeg -y -loop 1 -i cover.jpg -f concat -i mylist.txt -c:v libx264 -r 30 -pix_fmt yuv420p -vframes 46500 -c:a aac -b:a 192k -strict experimental -shortest output.mp4
|
||||
### 缩放
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i input.mp4 -vf "scale=640:480" out.mp4
|
||||
# -1 → 指根据另一个参数帮我们推断
|
||||
$ ffmpeg -i input.mp4 -vf "scale=720:-1" out.mp4
|
||||
# 宽度和高度
|
||||
ffmpeg -i input.mp4 -vf "scale=w=800:h=600" output.mp4
|
||||
# in_w\in_h 输入尺寸
|
||||
ffmpeg -i input.mkv -vf "scale=w=1/2*in_w:h=1/2*in_h" output.mkv
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 添加水印
|
||||
### 裁剪
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
在视频左上方 20,20 的位置插入 logo.png 图片
|
||||
从左上角开始，复制 `x=0px` `y=0px` 的相应窗口来创建 `1280x720` 大小的输出视频
|
||||
|
||||
```bash
|
||||
# -b:v 548k 可选参数，设置视频比特率，默认 200k 最好设置与原视频一致
|
||||
ffmpeg -i 1.mp4 -acodec copy -b:v 548k -vf "movie=logo.png[watermark];[in][watermark]overlay=20:20" output.mp4
|
||||
ffmpeg -i input.mp4 -vf "crop=w=1280:h=720:x=0:y=0" output.mp4
|
||||
```
|
||||
|
||||
裁剪到宽度 360，高度 640，从坐标 (10, 20) 开始
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i input.mov -vf 'crop=360:640:10:20' output.mov
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
@ -654,6 +630,94 @@ ffmpeg -i 1.mp4 -b:v 548k -vf delogo=x=10:y=10:w=120:h=45:show=1 output.mp4
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 创建缩略图
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
在 10 秒时创建一个缩略图
|
||||
|
||||
```bash
|
||||
$ ffmpeg -ss 10 -i <input file> -vframes 1 -vcodec png -an thumb.png
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
例如，要每 `n` 秒创建一次缩略图，请使用 `-vf fps=1/n`
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i <input file> -vf fps=1/60 thumbnails/thumb%03d.png
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 添加水印
|
||||
|
||||
在视频左上方 20,20 的位置插入 logo.png 图片
|
||||
|
||||
```bash
|
||||
# -b:v 548k 可选参数，设置视频比特率，默认 200k 最好设置与原视频一致
|
||||
ffmpeg -i 1.mp4 -acodec copy -b:v 548k -vf "movie=logo.png[watermark];[in][watermark]overlay=20:20" output.mp4
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 视频旋转
|
||||
|
||||
```bash
|
||||
# 顺时针旋转 90
|
||||
$ ffmpeg -i input.avi -vf "rotate=90*PI/180" out.mp4
|
||||
# 顺时针旋转 180，翻转 90
|
||||
$ ffmpeg -i input.mp4 -vf "rotate=PI" out.mp4
|
||||
```
|
||||
|
||||
### 更改视频播放速度
|
||||
|
||||
```bash
|
||||
# 加速 2 倍
|
||||
$ ffmpeg -i input.mkv -vf "setpts=0.5*PTS" output.mkv
|
||||
# 减速 2 倍
|
||||
$ ffmpeg -i input.mp4 -vf "setpts=2*PTS" output.mp4
|
||||
```
|
||||
|
||||
### 添加背景音乐
|
||||
|
||||
```bash
|
||||
# -t 10 文件时长，单位为秒，建议取值原始视频总时长
|
||||
$ ffmpeg -i 1.mp4 -i test.mp3 \
|
||||
-filter_complex "[1:a]aloop=loop=-1:size=2e+09[out];[out][0:a]amix" \
|
||||
-t 10 out.mp4
|
||||
```
|
||||
|
||||
音频过滤器
|
||||
---
|
||||
|
||||
### 调节音量
|
||||
|
||||
```bash
|
||||
# 增大音量
|
||||
$ ffmpeg -i test.mp4 -af "volumn=1.5" out.mp4
|
||||
```
|
||||
|
||||
### 更改音频速度
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i input.wav -af "atempo=0.75" output.wav
|
||||
# 加速 4 倍
|
||||
$ ffmpeg -i input.mp3 -af "atempo=2.0,atempo=2.0" ouutput.mp3
|
||||
```
|
||||
|
||||
`atempo` 它只接受 `0.5`(半速) 到 `2` (倍速)之间的值。为了越过这个限制，你可以链式使用这个过滤器
|
||||
|
||||
### 统一视频的音量
|
||||
|
||||
```bash
|
||||
$ ffmpeg -i test.mp4 -af "loudnorm=I=-5:LRA=1" out.mp4
|
||||
```
|
||||
|
||||
### 重新映射通道数
|
||||
|
||||
```bash
|
||||
# 使左右耳的声音同时出现
|
||||
$ ffmpeg -i input.mp3 -af "channelmap=1-0|1-1" output.mp3
|
||||
```
|
||||
|
||||
另见
|
||||
---
|
||||
|
||||
|
||||
421
docs/latex.md
Normal file
421
docs/latex.md
Normal file
@ -0,0 +1,421 @@
|
||||
LaTeX 备忘清单
|
||||
===
|
||||
|
||||
本备忘单总结了 [LaTeX](https://www.latex-project.org/) 常用显示数学符号的参考列表和一些 [KaTeX](https://katex.org/) 的应用示例。
|
||||
|
||||
入门
|
||||
---
|
||||
|
||||
### 介绍
|
||||
|
||||
[LaTeX](https://www.latex-project.org/) 基于 TEX 的排版系统，适用于生成高印刷质量的科技和数学、物理文档。
|
||||
|
||||
- [LaTeX 官网](https://www.latex-project.org/) _(latex-project.org)_
|
||||
- [KaTeX 官网](https://katex.org/) _(katex.org)_
|
||||
|
||||
而 [KaTeX](https://katex.org/) 只处理 LaTeX 的数学符号的一个更小的子集，用于 web 上展示
|
||||
|
||||
### 示例
|
||||
|
||||
```KaTeX
|
||||
% \f is defined as #1f(#2) using the macro
|
||||
f\relax(x) = \int_{-\infty}^\infty
|
||||
f\hat\xi\,e^{2 \pi i \xi x}
|
||||
\,d\xi
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
```LaTeX
|
||||
% \f is defined as #1f(#2) using the macro
|
||||
f\relax(x) = \int_{-\infty}^\infty
|
||||
f\hat\xi\,e^{2 \pi i \xi x}
|
||||
\,d\xi
|
||||
```
|
||||
|
||||
### 行内展示
|
||||
|
||||
```markdown
|
||||
基于 KaTeX 在一行
|
||||
展示示例： `KaTeX:\int_0^\infty x^2 dx`
|
||||
```
|
||||
|
||||
基于 KaTeX 在一行展示示例： `KaTeX:\int_0^\infty x^2 dx`
|
||||
|
||||
Supported Functions
|
||||
---
|
||||
|
||||
### Accents
|
||||
<!--rehype:wrap-class=col-span-2 row-span-2-->
|
||||
|
||||
:- | :- | :-
|
||||
:- | :- | :-
|
||||
`KaTeX:a'` <pur>`a'`</pur> | `KaTeX:\tilde{a}` <pur>`\tilde{a}`</pur> | `KaTeX:\mathring{g}` <pur>`\mathring{g}`</pur>
|
||||
`KaTeX:a''` <pur>`a''`</pur> | `KaTeX:\widetilde{ac}` <pur>`\widetilde{ac}`</pur> | `KaTeX:\overgroup{AB}` <pur>`\overgroup{AB}`</pur>
|
||||
`KaTeX:a^{\prime}` <pur>`a^{\prime}`</pur> | `KaTeX:\utilde{AB}` <pur>`\utilde{AB}`</pur> | `KaTeX:\undergroup{AB}` <pur>`\undergroup{AB}`</pur>
|
||||
`KaTeX:\acute{a}` <pur>`\acute{a}`</pur> | `KaTeX:\vec{F}` <pur>`\vec{F}`</pur> | `KaTeX:\Overrightarrow{AB}` <pur>`\Overrightarrow{AB}`</pur>
|
||||
`KaTeX:\bar{y}` <pur>`\bar{y}`</pur> | `KaTeX:\overleftarrow{AB}` <pur>`\overleftarrow{AB}`</pur> | `KaTeX:\overrightarrow{AB}` <pur>`\overrightarrow{AB}`</pur>
|
||||
`KaTeX:\breve{a}` <pur>`\breve{a}`</pur> | `KaTeX:\underleftarrow{AB}` <pur>`\underleftarrow{AB}`</pur> | `KaTeX:\underrightarrow{AB}` <pur>`\underrightarrow{AB}`</pur>
|
||||
`KaTeX:\check{a}` <pur>`\check{a}`</pur> | `KaTeX:\overleftharpoon{ac}` <pur>`\overleftharpoon{ac}`</pur> | `KaTeX:\overrightharpoon{ac}` <pur>`\overrightharpoon{ac}`</pur>
|
||||
`KaTeX:\dot{a}` <pur>`\dot{a}`</pur> | `KaTeX:\overleftrightarrow{AB}` <pur>`\overleftrightarrow{AB}`</pur> | `KaTeX:\overbrace{AB}` <pur>`\overbrace{AB}`</pur>
|
||||
`KaTeX:\ddot{a}` <pur>`\ddot{a}`</pur> | `KaTeX:\underleftrightarrow{AB}` <pur>`\underleftrightarrow{AB}`</pur> | `KaTeX:\underbrace{AB}` <pur>`\underbrace{AB}`</pur>
|
||||
`KaTeX:\grave{a}` <pur>`\grave{a}`</pur> | `KaTeX:\overline{AB}` <pur>`\overline{AB}`</pur> | `KaTeX:\overlinesegment{AB}` <pur>`\overlinesegment{AB}`</pur>
|
||||
`KaTeX:\hat{\theta}` <pur>`\hat{\theta}`</pur> | `KaTeX:\underline{AB}` <pur>`\underline{AB}`</pur> | `KaTeX:\underlinesegment{AB}` <pur>`\underlinesegment{AB}`</pur>
|
||||
`KaTeX:\widehat{ac}` <pur>`\widehat{ac}`</pur> | `KaTeX:\widecheck{ac}` <pur>`\widecheck{ac}`</pur> | `KaTeX:\underbar{X}` <pur>`\underbar{X}`</pur>
|
||||
|
||||
### \text｛…｝中的强调功能
|
||||
|
||||
:- | :- | :-
|
||||
:- | :- | :-
|
||||
`KaTeX:\'{a}` <pur>`\'{a}`</pur> | `KaTeX:\~{a}` <pur>`\~{a}`</pur> |
|
||||
`KaTeX:\.{a}` <pur>`\.{a}`</pur> | `KaTeX:\H{a}` <pur>`\H{a}`</pur> |
|
||||
``KaTeX:\\\`{a}`` <pur><code>\\`{a}</code></pur> | `KaTeX:\={a}` <pur>`\={a}`</pur> |
|
||||
`KaTeX:\"{a}` <pur>`\"{a}`</pur> | `KaTeX:\v{a}` <pur>`\v{a}`</pur> |
|
||||
`KaTeX:\^{a}` <pur>`\^{a}`</pur> | `KaTeX:\u{a}` <pur>`\u{a}`</pur> |
|
||||
`KaTeX:\r{a}` <pur>`\r{a}`</pur> |
|
||||
|
||||
### Delimiter Sizing
|
||||
|
||||
:- | :-
|
||||
:- | :-
|
||||
`KaTeX:\left(\LARGE{AB}\right)` | <pur>`\left(\LARGE{AB}\right)`</pur>
|
||||
`KaTeX:( \big( \Big( \bigg( \Bigg(`| <pur>`( \big( \Big( \bigg( \Bigg(`</pur>
|
||||
|
||||
---
|
||||
|
||||
:- | :- | :- | :- | :-
|
||||
:- | :- | :- | :- | :-
|
||||
`\left` | `\big` | `\bigl` | `\bigm` | `\bigr`
|
||||
`\middle` | `\Big` | `\Bigl` | `\Bigm` | `\Bigr`
|
||||
`\right` | `\bigg` | `\biggl` | `\biggm` | `\biggr`
|
||||
`` | `\Bigg` | `\Biggl` | `\Biggm` | `\Biggr`
|
||||
|
||||
### 分隔符 Delimiters
|
||||
<!--rehype:wrap-class=col-span-3-->
|
||||
|
||||
预览 | 方法 | 预览 | 方法 | 预览 | 方法 | 预览| 方法 | 预览 | 方法
|
||||
:- | :- | :- | :- | :- | :- | :- | :- | :- | :-
|
||||
| `KaTeX:()` | <pur>`()`</pur> | `KaTeX:\lparen \rparen` | <pur>`\lparen` `\rparen`</pur> | `KaTex:⌈ ⌉` | <pur>`⌈ ⌉`</pur> | `KaTex:\lceil \rceil` | <pur>`\lceil` `\rceil`</pur> | `KaTex:\uparrow` | <pur>`\uparrow`</pur> |
|
||||
| `KaTeX:[]` | <pur>`[]`</pur> | `KaTeX:\lbrack \rbrack` | <pur>`\lbrack` `\rbrack`</pur> | `KaTex:⌊ ⌋` | <pur>`⌊ ⌋`</pur> | `KaTex:\lfloor \rfloor` | <pur>`\lfloor` `\rfloor`</pur> | `KaTex:\downarrow` | <pur>`\downarrow`</pur> |
|
||||
| `KaTeX:\{ \}` | <pur>`{}`</pur> | `KaTex:\lbrace \rbrace` | <pur>`\lbrace` `\rbrace`</pur> | `KaTex:⎰⎱` | <pur>`⎰⎱`</pur> | `KaTex:\lmoustache \rmoustache` | <pur>`\lmoustache` `\rmoustache`</pur> | `KaTex:\updownarrow` | <pur>`\updownarrow`</pur> |
|
||||
| `KaTeX:⟨ ⟩` | <pur>`⟨⟩`</pur> | `KaTex:\langle \rangle` | <pur>`\langle` `\rangle`</pur> | `KaTex:⟮ ⟯` | <pur>`⟮ ⟯`</pur> | `KaTex:\lgroup \rgroup` | <pur>`\lgroup` `\rgroup`</pur> | `KaTex:\Uparrow` | <pur>`\Uparrow`</pur> |
|
||||
| `KaTeX:∣` | <pur>`\|`</pur> | `KaTex:\vert` | <pur>`\vert`</pur> | `KaTex:┌ ┐` | <pur>`┌ ┐`</pur> | `KaTex:\ulcorner \urcorner` | <pur>`\ulcorner` `\urcorner`</pur> | `KaTex:\Downarrow` | <pur>`\Downarrow`</pur> |
|
||||
| `KaTeX:\|` _(<red>MD语法冲突</red>)_ | <pur><code>\\|</code></pur> | `KaTex:\Vert` | <pur>`\Vert`</pur> | `KaTex:└ ┘` | <pur>`└ ┘`</pur> | `KaTex:\llcorner \lrcorner` | <pur>`\llcorner` `\lrcorner`</pur> | `KaTex:\Updownarrow` | <pur>`\Updownarrow`</pur> |
|
||||
| `KaTeX:∣ ∣` | <pur>`\lvert` `\rvert`</pur> | `KaTex:\lVert \rVert` | <pur>`\lVert` `\rVert`</pur> | | <pur>`\left.`</pur> | | <pur>`\right.`</pur> | `KaTex:\backslash` | <pur>`\backslash`</pur> |
|
||||
| `KaTeX:\lang` `KaTeX:\rang` | <pur>`\lang` `\rang`<pur> | `KaTeX:\lt \gt` | <pur>`\lt \gt`</pur> | `KaTex:⟦ ⟧` | <pur>`⟦ ⟧`</pur> | `KaTex:\llbracket \rrbracket` | <pur>`\llbracket` `\rrbracket`</pur> | `KaTex:\lBrace \rBrace` | <pur>`\lBrace \rBrace`</pur> |
|
||||
<!--rehype:className=show-header left-align-->
|
||||
|
||||
Environments
|
||||
---
|
||||
|
||||
### Environments 1
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{matrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{matrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{matrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{matrix}
|
||||
```
|
||||
|
||||
### Environments 2
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{array}{cc}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{array}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{array}{cc}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{array}
|
||||
```
|
||||
|
||||
### Environments 3
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{pmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{pmatrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{pmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{pmatrix}
|
||||
```
|
||||
|
||||
### Environments 4
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{bmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{bmatrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{bmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{bmatrix}
|
||||
```
|
||||
|
||||
### Environments 5
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{vmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{vmatrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{vmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{vmatrix}
|
||||
```
|
||||
|
||||
### Environments 6
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{Vmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{Vmatrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{Vmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{Vmatrix}
|
||||
```
|
||||
|
||||
### Environments 7
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{Bmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{Bmatrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{Bmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{Bmatrix}
|
||||
```
|
||||
|
||||
### Environments 8
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\def\arraystretch{1.5}
|
||||
\begin{array}{c:c:c}
|
||||
a & b & c \\ \hline
|
||||
d & e & f \\
|
||||
\hdashline
|
||||
g & h & i
|
||||
\end{array}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\def\arraystretch{1.5}
|
||||
\begin{array}{c:c:c}
|
||||
a & b & c \\ \hline
|
||||
d & e & f \\
|
||||
\hdashline
|
||||
g & h & i
|
||||
\end{array}
|
||||
```
|
||||
|
||||
### Environments 9
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
x = \begin{cases}
|
||||
a &\text{if } b \\
|
||||
c &\text{if } d
|
||||
\end{cases}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
x = \begin{cases}
|
||||
a &\text{if } b \\
|
||||
c &\text{if } d
|
||||
\end{cases}
|
||||
```
|
||||
|
||||
### Environments 10
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{rcases}
|
||||
a &\text{if } b \\
|
||||
c &\text{if } d
|
||||
\end{rcases}⇒…
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{rcases}
|
||||
a &\text{if } b \\
|
||||
c &\text{if } d
|
||||
\end{rcases}⇒…
|
||||
```
|
||||
|
||||
### Environments 11
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{smallmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{smallmatrix}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\begin{smallmatrix}
|
||||
a & b \\
|
||||
c & d
|
||||
\end{smallmatrix}
|
||||
```
|
||||
|
||||
### Environments 12
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\sum_{
|
||||
\begin{subarray}{l}
|
||||
i\in\Lambda\\
|
||||
0<j<n
|
||||
\end{subarray}}
|
||||
```
|
||||
|
||||
```LaTeX
|
||||
\sum_{
|
||||
\begin{subarray}{l}
|
||||
i\in\Lambda\\
|
||||
0<j<n
|
||||
\end{subarray}}
|
||||
```
|
||||
|
||||
### Environments 12
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{equation}
|
||||
\begin{split} a &=b+c\\
|
||||
&=e+f
|
||||
\end{split}
|
||||
\end{equation}
|
||||
```
|
||||
<!--rehype:style=flex:1;-->
|
||||
|
||||
```LaTeX
|
||||
\begin{equation}
|
||||
\begin{split} a &=b+c\\
|
||||
&=e+f
|
||||
\end{split}
|
||||
\end{equation}
|
||||
```
|
||||
|
||||
### Environments 12
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{align}
|
||||
a&=b+c \\
|
||||
d+e&=f
|
||||
\end{align}
|
||||
```
|
||||
<!--rehype:style=flex:1;-->
|
||||
|
||||
```LaTeX
|
||||
\begin{align}
|
||||
a&=b+c \\
|
||||
d+e&=f
|
||||
\end{align}
|
||||
```
|
||||
|
||||
### Environments 12
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{gather}
|
||||
a=b \\
|
||||
e=b+c
|
||||
\end{gather}
|
||||
```
|
||||
<!--rehype:style=flex:1;-->
|
||||
|
||||
```LaTeX
|
||||
\begin{gather}
|
||||
a=b \\
|
||||
e=b+c
|
||||
\end{gather}
|
||||
```
|
||||
|
||||
### Environments 12
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{alignat}{2}
|
||||
10&x+&3&y=2\\
|
||||
3&x+&13&y=4
|
||||
\end{alignat}
|
||||
```
|
||||
<!--rehype:style=flex:1;-->
|
||||
|
||||
```LaTeX
|
||||
\begin{alignat}{2}
|
||||
10&x+&3&y=2\\
|
||||
3&x+&13&y=4
|
||||
\end{alignat}
|
||||
```
|
||||
|
||||
### Environments 12
|
||||
<!--rehype:body-style=display: flex;flex-direction: row;justify-content: flex-start;-->
|
||||
|
||||
```KaTeX
|
||||
\begin{CD}
|
||||
A @>a>> B \\
|
||||
@VbVV @AAcA \\
|
||||
C @= D
|
||||
\end{CD}
|
||||
```
|
||||
<!--rehype:style=flex:1;-->
|
||||
|
||||
```LaTeX
|
||||
\begin{CD}
|
||||
A @>a>> B \\
|
||||
@VbVV @AAcA \\
|
||||
C @= D
|
||||
\end{CD}
|
||||
```
|
||||
|
||||
另见
|
||||
----
|
||||
|
||||
- [LaTeX 官网](https://www.latex-project.org/) _(latex-project.org)_
|
||||
- [KaTeX 官网](https://katex.org/) _(katex.org)_
|
||||
972
docs/php.md
Normal file
972
docs/php.md
Normal file
@ -0,0 +1,972 @@
|
||||
PHP 备忘清单
|
||||
===
|
||||
|
||||
这份 [PHP](https://www.php.net/manual/zh/index.php) 备忘单为快速查找最常用代码的正确语法提供了参考
|
||||
|
||||
入门
|
||||
------
|
||||
|
||||
### hello.php
|
||||
|
||||
```php
|
||||
<?php // 以 PHP 开放标签开头
|
||||
echo "Hello World\n";
|
||||
print("Hello quickref.me");
|
||||
?>
|
||||
```
|
||||
|
||||
PHP 运行命令
|
||||
|
||||
```shell
|
||||
$ php hello.php
|
||||
```
|
||||
|
||||
### 变量 Variables
|
||||
|
||||
```php
|
||||
$boolean1 = true;
|
||||
$boolean2 = True;
|
||||
$int = 12;
|
||||
$float = 3.1415926;
|
||||
unset($float); // 删除变量
|
||||
$str1 = "How are you?";
|
||||
$str2 = 'Fine, thanks';
|
||||
```
|
||||
|
||||
查看: [Types](#php-类型)
|
||||
|
||||
### 字符串 Strings
|
||||
|
||||
```php
|
||||
$url = "quickref.me";
|
||||
echo "I'm learning PHP at $url";
|
||||
// 连接字符串
|
||||
echo "I'm learning PHP at " . $url;
|
||||
$hello = "Hello, ";
|
||||
$hello .= "World!";
|
||||
echo $hello; # => Hello, World!
|
||||
```
|
||||
|
||||
查看: [Strings](#php-字符串)
|
||||
|
||||
### 数组 Arrays
|
||||
|
||||
```php
|
||||
$num = [1, 3, 5, 7, 9];
|
||||
$num[5] = 11;
|
||||
unset($num[2]); // 删除变量
|
||||
print_r($num); # => 1 3 7 9 11
|
||||
echo count($num); # => 5
|
||||
```
|
||||
|
||||
查看: [Arrays](#php-数组)
|
||||
|
||||
### 运算符 Operators
|
||||
|
||||
```php
|
||||
$x = 1;
|
||||
$y = 2;
|
||||
$sum = $x + $y;
|
||||
echo $sum; # => 3
|
||||
```
|
||||
|
||||
查看: [Operators](#php-运算符)
|
||||
|
||||
### Include
|
||||
<!--rehype:wrap-class=row-span-3-->
|
||||
|
||||
#### vars.php
|
||||
|
||||
```php
|
||||
<?php // 以 PHP 开放标签开头。
|
||||
$fruit = 'apple';
|
||||
echo "I was imported";
|
||||
return 'Anything you like.';
|
||||
?>
|
||||
```
|
||||
|
||||
#### test.php
|
||||
|
||||
```php
|
||||
<?php
|
||||
include 'vars.php';
|
||||
echo $fruit . "\n"; # => apple
|
||||
/* 与 include 相同，
|
||||
如果不能包含则导致错误*/
|
||||
require 'vars.php';
|
||||
// 也有效
|
||||
include('vars.php');
|
||||
require('vars.php');
|
||||
// 通过 HTTP 包含
|
||||
include 'http://x.com/file.php';
|
||||
// 包含和返回语句
|
||||
$result = include 'vars.php';
|
||||
echo $result; # => Anything you like.
|
||||
?>
|
||||
```
|
||||
|
||||
### 功能 Functions
|
||||
|
||||
```php
|
||||
function add($num1, $num2 = 1) {
|
||||
return $num1 + $num2;
|
||||
}
|
||||
echo add(10); # => 11
|
||||
echo add(10, 5); # => 15
|
||||
```
|
||||
|
||||
查看: [Functions](#php-函数)
|
||||
|
||||
### 注释 Comments
|
||||
|
||||
```php
|
||||
# 这是一个单行 shell 样式的注释
|
||||
// 这是一行 c++ 风格的注释
|
||||
/* 这是一个多行注释
|
||||
另一行注释 */
|
||||
```
|
||||
|
||||
### 常数 Constants
|
||||
|
||||
```php
|
||||
const MY_CONST = "hello";
|
||||
echo MY_CONST; # => hello
|
||||
|
||||
# => MY_CONST is: hello
|
||||
echo 'MY_CONST is: ' . MY_CONST;
|
||||
```
|
||||
|
||||
### 类 Classes
|
||||
|
||||
```php
|
||||
class Student {
|
||||
public function __construct($name) {
|
||||
$this->name = $name;
|
||||
}
|
||||
}
|
||||
$alex = new Student("Alex");
|
||||
```
|
||||
|
||||
查看: [Classes](#php-类)
|
||||
|
||||
PHP 类型
|
||||
------
|
||||
|
||||
### 布尔值 Boolean
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```php
|
||||
$boolean1 = true;
|
||||
$boolean2 = TRUE;
|
||||
$boolean3 = false;
|
||||
$boolean4 = FALSE;
|
||||
$boolean5 = (boolean) 1; # => true
|
||||
$boolean6 = (boolean) 0; # => false
|
||||
```
|
||||
|
||||
布尔值不区分大小写
|
||||
|
||||
### 整数 Integer
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```php
|
||||
$int1 = 28; # => 28
|
||||
$int2 = -32; # => -32
|
||||
$int3 = 012; # => 10 (octal)
|
||||
$int4 = 0x0F; # => 15 (hex)
|
||||
$int5 = 0b101; # => 5 (binary)
|
||||
# => 2000100000 (decimal, PHP 7.4.0)
|
||||
$int6 = 2_000_100_000;
|
||||
```
|
||||
|
||||
另见: [Integers](https://www.php.net/manual/en/language.types.integer.php)
|
||||
|
||||
### 字符串 Strings
|
||||
|
||||
```php
|
||||
echo 'this is a simple string';
|
||||
```
|
||||
|
||||
查看: [Strings](#php-字符串)
|
||||
|
||||
### 数组 Arrays
|
||||
|
||||
```php
|
||||
$arr = array("hello", "world", "!");
|
||||
```
|
||||
|
||||
查看: [Arrays](#php-数组)
|
||||
|
||||
### 浮点数 Float (Double)
|
||||
|
||||
```php
|
||||
$float1 = 1.234;
|
||||
$float2 = 1.2e7;
|
||||
$float3 = 7E-10;
|
||||
$float4 = 1_234.567; // as of PHP 7.4.0
|
||||
var_dump($float4); // float(1234.567)
|
||||
$float5 = 1 + "10.5"; # => 11.5
|
||||
$float6 = 1 + "-1.3e3"; # => -1299
|
||||
```
|
||||
|
||||
### Null
|
||||
|
||||
```php
|
||||
$a = null;
|
||||
$b = 'Hello php!';
|
||||
echo $a ?? 'a is unset'; # => a is unset
|
||||
echo $b ?? 'b is unset'; # => Hello php
|
||||
$a = array();
|
||||
$a == null # => true
|
||||
$a === null # => false
|
||||
is_null($a) # => false
|
||||
```
|
||||
|
||||
### 可迭代对象 Iterables
|
||||
|
||||
```php
|
||||
function bar(): iterable {
|
||||
return [1, 2, 3];
|
||||
}
|
||||
function gen(): iterable {
|
||||
yield 1;
|
||||
yield 2;
|
||||
yield 3;
|
||||
}
|
||||
foreach (bar() as $value) {
|
||||
echo $value; # => 123
|
||||
}
|
||||
```
|
||||
|
||||
PHP 字符串
|
||||
------
|
||||
|
||||
### 字符串 String
|
||||
|
||||
```php
|
||||
# => '$String'
|
||||
$sgl_quotes = '$String';
|
||||
# => 'This is a $String.'
|
||||
$dbl_quotes = "This is a $sgl_quotes.";
|
||||
# => a tab character.
|
||||
$escaped = "a \t tab character.";
|
||||
# => a slash and a t: \t
|
||||
$unescaped = 'a slash and a t: \t';
|
||||
```
|
||||
|
||||
### 多行 Multi-line
|
||||
|
||||
```php
|
||||
$str = "foo";
|
||||
// 未插值的多行
|
||||
$nowdoc = <<<'END'
|
||||
Multi line string
|
||||
$str
|
||||
END;
|
||||
// 将执行字符串插值
|
||||
$heredoc = <<<END
|
||||
Multi line
|
||||
$str
|
||||
END;
|
||||
```
|
||||
|
||||
### 操作 Manipulation
|
||||
|
||||
```php
|
||||
$s = "Hello Phper";
|
||||
echo strlen($s); # => 11
|
||||
echo substr($s, 0, 3); # => Hel
|
||||
echo substr($s, 1); # => ello Phper
|
||||
echo substr($s, -4, 3);# => hpe
|
||||
echo strtoupper($s); # => HELLO PHPER
|
||||
echo strtolower($s); # => hello phper
|
||||
echo strpos($s, "l"); # => 2
|
||||
var_dump(strpos($s, "L")); # => false
|
||||
```
|
||||
|
||||
另见: [字符串函数](https://www.php.net/manual/en/ref.strings.php)
|
||||
|
||||
PHP 数组
|
||||
------
|
||||
|
||||
### 定义
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```php
|
||||
$a1 = ["hello", "world", "!"]
|
||||
$a2 = array("hello", "world", "!");
|
||||
$a3 = explode(",", "apple,pear,peach");
|
||||
```
|
||||
|
||||
#### 混合 int 和 string 键
|
||||
|
||||
```php
|
||||
$array = array(
|
||||
"foo" => "bar",
|
||||
"bar" => "foo",
|
||||
100 => -100,
|
||||
-100 => 100,
|
||||
);
|
||||
var_dump($array);
|
||||
```
|
||||
|
||||
#### 短数组语法
|
||||
|
||||
```php
|
||||
$array = [
|
||||
"foo" => "bar",
|
||||
"bar" => "foo",
|
||||
];
|
||||
```
|
||||
|
||||
### 多阵列
|
||||
|
||||
```php
|
||||
$multiArray = [
|
||||
[1, 2, 3],
|
||||
[4, 5, 6],
|
||||
[7, 8, 9],
|
||||
];
|
||||
print_r($multiArray[0][0]) # => 1
|
||||
print_r($multiArray[0][1]) # => 2
|
||||
print_r($multiArray[0][2]) # => 3
|
||||
```
|
||||
|
||||
### 多类型
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```php
|
||||
$array = array(
|
||||
"foo" => "bar",
|
||||
42 => 24,
|
||||
"multi" => array(
|
||||
"dim" => array(
|
||||
"a" => "foo"
|
||||
)
|
||||
)
|
||||
);
|
||||
# => string(3) "bar"
|
||||
var_dump($array["foo"]);
|
||||
# => int(24)
|
||||
var_dump($array[42]);
|
||||
# => string(3) "foo"
|
||||
var_dump($array["multi"]["dim"]["a"]);
|
||||
```
|
||||
|
||||
### 操作
|
||||
|
||||
```php
|
||||
$arr = array(5 => 1, 12 => 2);
|
||||
$arr[] = 56; // 附加
|
||||
$arr["x"] = 42; // 用键添加
|
||||
sort($arr); // 排序
|
||||
unset($arr[5]); // 消除
|
||||
unset($arr); // 移除所有
|
||||
```
|
||||
|
||||
查看: [数组函数](https://www.php.net/manual/en/ref.array.php)
|
||||
|
||||
### 索引迭代
|
||||
|
||||
```php
|
||||
$array = array('a', 'b', 'c');
|
||||
$count = count($array);
|
||||
for ($i = 0; $i < $count; $i++) {
|
||||
echo "i:{$i}, v:{$array[$i]}\n";
|
||||
}
|
||||
```
|
||||
|
||||
### 价值迭代
|
||||
|
||||
```php
|
||||
$colors = array('red', 'blue', 'green');
|
||||
foreach ($colors as $color) {
|
||||
echo "Do you like $color?\n";
|
||||
}
|
||||
```
|
||||
|
||||
### 关键迭代
|
||||
|
||||
```php
|
||||
$arr = ["foo" => "bar", "bar" => "foo"];
|
||||
foreach ( $arr as $key => $value )
|
||||
{
|
||||
echo "key: " . $key . "\n";
|
||||
echo "val: {$arr[$key]}\n";
|
||||
}
|
||||
```
|
||||
|
||||
### 串联阵列
|
||||
|
||||
```php
|
||||
$a = [1, 2];
|
||||
$b = [3, 4];
|
||||
// PHP 7.4 以后
|
||||
# => [1, 2, 3, 4]
|
||||
$result = [...$a, ...$b];
|
||||
```
|
||||
|
||||
### Into 函数
|
||||
|
||||
```php
|
||||
$array = [1, 2];
|
||||
function foo(int $a, int $b) {
|
||||
echo $a; # => 1
|
||||
echo $b; # => 2
|
||||
}
|
||||
foo(...$array);
|
||||
```
|
||||
|
||||
### Splat运算符
|
||||
|
||||
```php
|
||||
function foo($first, ...$other) {
|
||||
var_dump($first); # => a
|
||||
var_dump($other); # => ['b', 'c']
|
||||
}
|
||||
foo('a', 'b', 'c' /*, ...*/ );
|
||||
// 或
|
||||
function foo($first, string ...$other){}
|
||||
```
|
||||
|
||||
PHP 运算符
|
||||
-------
|
||||
|
||||
### 算术
|
||||
|
||||
:- | -
|
||||
:- | -
|
||||
`+` | 添加
|
||||
`-` | 减法
|
||||
`*` | 乘法
|
||||
`/` | 分配
|
||||
`%` | 取模
|
||||
`**` | 求幂
|
||||
|
||||
### 分配
|
||||
|
||||
:- | -
|
||||
:- | -
|
||||
`a += b` | 如同 `a = a + b`
|
||||
`a -= b` | 如同 `a = a – b`
|
||||
`a *= b` | 如同 `a = a * b`
|
||||
`a /= b` | 如同 `a = a / b`
|
||||
`a %= b` | 如同 `a = a % b`
|
||||
|
||||
### 比较
|
||||
|
||||
:- | -
|
||||
:- | -
|
||||
`==` | 平等的
|
||||
`===` | 完全相同的
|
||||
`!=` | 不相等
|
||||
`<>` | 不相等
|
||||
`!==` | 不相同
|
||||
`<` | 少于
|
||||
`>` | 比...更棒
|
||||
`<=` | 小于或等于
|
||||
`>=` | 大于或等于
|
||||
`<=>` | 小于/等于/大于
|
||||
|
||||
### 逻辑的
|
||||
|
||||
:- | -
|
||||
:- | -
|
||||
`and` | 和
|
||||
`or` | 或者
|
||||
`xor` | 独家或
|
||||
`!` | 不是
|
||||
`&&` | 和
|
||||
`\|\|` | 或者
|
||||
|
||||
### 算术
|
||||
|
||||
```php
|
||||
// 算术
|
||||
$sum = 1 + 1; // 2
|
||||
$difference = 2 - 1; // 1
|
||||
$product = 2 * 2; // 4
|
||||
$quotient = 2 / 1; // 2
|
||||
// 速记算术
|
||||
$num = 0;
|
||||
$num += 1; // 将 $num 增加 1
|
||||
echo $num++; // 打印 1（评估后的增量）
|
||||
echo ++$num; // 打印 3（评估前的增量）
|
||||
$num /= $float; // 将商除并分配给 $num
|
||||
```
|
||||
|
||||
### 按位
|
||||
|
||||
:- | -
|
||||
:- | -
|
||||
`&` | 和
|
||||
`|` | 或（包括或）
|
||||
`^` | 异或（异或）
|
||||
`~` | 不是
|
||||
`<<` | 左移
|
||||
`>>` | 右移
|
||||
|
||||
PHP 条件
|
||||
------
|
||||
|
||||
### If elseif else
|
||||
|
||||
```php
|
||||
$a = 10;
|
||||
$b = 20;
|
||||
if ($a > $b) {
|
||||
echo "a is bigger than b";
|
||||
} elseif ($a == $b) {
|
||||
echo "a is equal to b";
|
||||
} else {
|
||||
echo "a is smaller than b";
|
||||
}
|
||||
```
|
||||
|
||||
### Switch
|
||||
|
||||
```php
|
||||
$x = 0;
|
||||
switch ($x) {
|
||||
case '0':
|
||||
print "it's zero";
|
||||
break;
|
||||
case 'two':
|
||||
case 'three':
|
||||
// do something
|
||||
break;
|
||||
default:
|
||||
// do something
|
||||
}
|
||||
```
|
||||
|
||||
### 三元运算符
|
||||
|
||||
```php
|
||||
# => Does
|
||||
print (false ? 'Not' : 'Does');
|
||||
$x = false;
|
||||
# => Does
|
||||
print($x ?: 'Does');
|
||||
$a = null;
|
||||
$b = 'Does print';
|
||||
# => a is unsert
|
||||
echo $a ?? 'a is unset';
|
||||
# => print
|
||||
echo $b ?? 'b is unset';
|
||||
```
|
||||
|
||||
### 匹配
|
||||
|
||||
```php
|
||||
$statusCode = 500;
|
||||
$message = match($statusCode) {
|
||||
200, 300 => null,
|
||||
400 => '未找到',
|
||||
500 => '服务器错误',
|
||||
default => '已知状态码',
|
||||
};
|
||||
echo $message; # => 服务器错误
|
||||
```
|
||||
|
||||
查看: [Match](https://www.php.net/manual/en/control-structures.match.php)
|
||||
|
||||
### 匹配表达式
|
||||
|
||||
```php
|
||||
$age = 23;
|
||||
$result = match (true) {
|
||||
$age >= 65 => 'senior',
|
||||
$age >= 25 => 'adult',
|
||||
$age >= 18 => 'young adult',
|
||||
default => 'kid',
|
||||
};
|
||||
echo $result; # => young adult
|
||||
```
|
||||
|
||||
PHP 循环
|
||||
------
|
||||
|
||||
### while 循环
|
||||
|
||||
```php
|
||||
$i = 1;
|
||||
# => 12345
|
||||
while ($i <= 5) {
|
||||
echo $i++;
|
||||
}
|
||||
```
|
||||
|
||||
### do while 循环
|
||||
|
||||
```php
|
||||
$i = 1;
|
||||
# => 12345
|
||||
do {
|
||||
echo $i++;
|
||||
} while ($i <= 5);
|
||||
```
|
||||
|
||||
### for i 循环
|
||||
|
||||
```php
|
||||
# => 12345
|
||||
for ($i = 1; $i <= 5; $i++) {
|
||||
echo $i;
|
||||
}
|
||||
```
|
||||
|
||||
### break 跳出循环
|
||||
|
||||
```php
|
||||
# => 123
|
||||
for ($i = 1; $i <= 5; $i++) {
|
||||
if ($i === 4) {
|
||||
break;
|
||||
}
|
||||
echo $i;
|
||||
}
|
||||
```
|
||||
|
||||
### continue 继续
|
||||
|
||||
```php
|
||||
# => 1235
|
||||
for ($i = 1; $i <= 5; $i++) {
|
||||
if ($i === 4) {
|
||||
continue;
|
||||
}
|
||||
echo $i;
|
||||
}
|
||||
```
|
||||
|
||||
### foreach 循环
|
||||
|
||||
```php
|
||||
$a = ['foo' => 1, 'bar' => 2];
|
||||
# => 12
|
||||
foreach ($a as $k) {
|
||||
echo $k;
|
||||
}
|
||||
```
|
||||
|
||||
查看: [Array iteration](#关键迭代)
|
||||
|
||||
PHP 函数
|
||||
------
|
||||
|
||||
### 返回值
|
||||
|
||||
```php
|
||||
function square($x)
|
||||
{
|
||||
return $x * $x;
|
||||
}
|
||||
echo square(4); # => 16
|
||||
```
|
||||
|
||||
### 返回类型
|
||||
|
||||
```php
|
||||
// 基本返回类型声明
|
||||
function sum($a, $b): float {/*...*/}
|
||||
function get_item(): string {/*...*/}
|
||||
class C {}
|
||||
// 返回一个对象
|
||||
function getC(): C { return new C; }
|
||||
```
|
||||
|
||||
### 可空返回类型
|
||||
|
||||
```php
|
||||
// 在 PHP 7.1 中可用
|
||||
function nullOrString(int $v) : ?string
|
||||
{
|
||||
return $v % 2 ? "odd" : null;
|
||||
}
|
||||
echo nullOrString(3); # => odd
|
||||
var_dump(nullOrString(4)); # => NULL
|
||||
```
|
||||
|
||||
查看: [Nullable types](https://www.php.net/manual/en/migration71.new-features.php)
|
||||
|
||||
### 无效函数
|
||||
|
||||
```php
|
||||
// 在 PHP 7.1 中可用
|
||||
function voidFunction(): void
|
||||
{
|
||||
echo 'Hello';
|
||||
return;
|
||||
}
|
||||
voidFunction(); # => Hello
|
||||
```
|
||||
|
||||
### 变量函数
|
||||
|
||||
```php
|
||||
function bar($arg = '')
|
||||
{
|
||||
echo "In bar(); arg: '$arg'.\n";
|
||||
}
|
||||
$func = 'bar';
|
||||
$func('test'); # => In bar(); arg: test
|
||||
```
|
||||
|
||||
### 匿名函数
|
||||
|
||||
```php
|
||||
$greet = function($name)
|
||||
{
|
||||
printf("Hello %s\r\n", $name);
|
||||
};
|
||||
$greet('World'); # => Hello World
|
||||
$greet('PHP'); # => Hello PHP
|
||||
```
|
||||
|
||||
### 递归函数
|
||||
|
||||
```php
|
||||
function recursion($x)
|
||||
{
|
||||
if ($x < 5) {
|
||||
echo "$x";
|
||||
recursion($x + 1);
|
||||
}
|
||||
}
|
||||
recursion(1); # => 1234
|
||||
```
|
||||
|
||||
### 默认参数
|
||||
|
||||
```php
|
||||
function coffee($type = "cappuccino")
|
||||
{
|
||||
return "Making a cup of $type.\n";
|
||||
}
|
||||
# => 制作一杯卡布奇诺
|
||||
echo coffee();
|
||||
# => 制作一杯
|
||||
echo coffee(null);
|
||||
# => 制作一杯浓缩咖啡
|
||||
echo coffee("espresso");
|
||||
```
|
||||
|
||||
### 箭头函数
|
||||
|
||||
```php
|
||||
$y = 1;
|
||||
|
||||
$fn1 = fn($x) => $x + $y;
|
||||
// 相当于按值使用 $y：
|
||||
$fn2 = function ($x) use ($y) {
|
||||
return $x + $y;
|
||||
};
|
||||
echo $fn1(5); # => 6
|
||||
echo $fn2(5); # => 6
|
||||
```
|
||||
|
||||
PHP 类
|
||||
------
|
||||
|
||||
### 构造函数 Constructor
|
||||
|
||||
```php
|
||||
class Student {
|
||||
public function __construct($name) {
|
||||
$this->name = $name;
|
||||
}
|
||||
public function print() {
|
||||
echo "Name: " . $this->name;
|
||||
}
|
||||
}
|
||||
$alex = new Student("Alex");
|
||||
$alex->print(); # => Name: Alex
|
||||
```
|
||||
|
||||
### 继承 Inheritance
|
||||
|
||||
```php
|
||||
class ExtendClass extends SimpleClass
|
||||
{
|
||||
// 重新定义父方法
|
||||
function displayVar()
|
||||
{
|
||||
echo "Extending class\n";
|
||||
parent::displayVar();
|
||||
}
|
||||
}
|
||||
$extended = new ExtendClass();
|
||||
$extended->displayVar();
|
||||
```
|
||||
|
||||
### 类变量 Classes variables
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```php
|
||||
class MyClass
|
||||
{
|
||||
const MY_CONST = 'value';
|
||||
static $staticVar = 'static';
|
||||
// 可见度
|
||||
public static $var1 = 'pubs';
|
||||
// 仅限类
|
||||
private static $var2 = 'pris';
|
||||
// 类和子类
|
||||
protected static $var3 = 'pros';
|
||||
// 类和子类
|
||||
protected $var6 = 'pro';
|
||||
// 仅限类
|
||||
private $var7 = 'pri';
|
||||
}
|
||||
```
|
||||
|
||||
静态访问
|
||||
|
||||
```php
|
||||
echo MyClass::MY_CONST; # => value
|
||||
echo MyClass::$staticVar; # => static
|
||||
```
|
||||
|
||||
### 魔术方法
|
||||
|
||||
```php
|
||||
class MyClass
|
||||
{
|
||||
// 对象被视为字符串
|
||||
public function __toString()
|
||||
{
|
||||
return $property;
|
||||
}
|
||||
// 与 __construct() 相反
|
||||
public function __destruct()
|
||||
{
|
||||
print "Destroying";
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### 接口
|
||||
|
||||
```php
|
||||
interface Foo
|
||||
{
|
||||
public function doSomething();
|
||||
}
|
||||
interface Bar
|
||||
{
|
||||
public function doSomethingElse();
|
||||
}
|
||||
class Cls implements Foo, Bar
|
||||
{
|
||||
public function doSomething() {}
|
||||
public function doSomethingElse() {}
|
||||
}
|
||||
```
|
||||
|
||||
各种各样的
|
||||
------
|
||||
|
||||
### 基本错误处理
|
||||
|
||||
```php
|
||||
try {
|
||||
// 做一点事
|
||||
} catch (Exception $e) {
|
||||
// 处理异常
|
||||
} finally {
|
||||
echo "Always print!";
|
||||
}
|
||||
```
|
||||
|
||||
### PHP 8.0 中的异常
|
||||
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
```php {.wrap}
|
||||
$nullableValue = null;
|
||||
try {
|
||||
$value = $nullableValue ?? throw new InvalidArgumentException();
|
||||
} catch (InvalidArgumentException) { // 变量是可选的
|
||||
// 处理我的异常
|
||||
echo "print me!";
|
||||
}
|
||||
```
|
||||
|
||||
### 自定义异常
|
||||
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
```php
|
||||
class MyException extends Exception {
|
||||
// 做一点事
|
||||
}
|
||||
```
|
||||
|
||||
用法
|
||||
|
||||
```php
|
||||
try {
|
||||
$condition = true;
|
||||
if ($condition) {
|
||||
throw new MyException('bala');
|
||||
}
|
||||
} catch (MyException $e) {
|
||||
// 处理我的异常
|
||||
}
|
||||
```
|
||||
|
||||
### Nullsafe 运算符
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```php
|
||||
// 从 PHP 8.0.0 开始，这一行：
|
||||
$result = $repo?->getUser(5)?->name;
|
||||
// 相当于下面的代码：
|
||||
if (is_null($repo)) {
|
||||
$result = null;
|
||||
} else {
|
||||
$user = $repository->getUser(5);
|
||||
if (is_null($user)) {
|
||||
$result = null;
|
||||
} else {
|
||||
$result = $user->name;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
另见: [Nullsafe 运算符](https://wiki.php.net/rfc/nullsafe_operator)
|
||||
|
||||
### 常用表达
|
||||
|
||||
```php
|
||||
$str = "Visit Quickref.me";
|
||||
echo preg_match("/qu/i", $str); # => 1
|
||||
```
|
||||
|
||||
查看: [PHP中的正则表达式](./regex.md#php中的正则表达式)
|
||||
|
||||
### fopen() 模式
|
||||
|
||||
:- | -
|
||||
:- | -
|
||||
`r` | 读
|
||||
`r+` | 读写，前置
|
||||
`w` | 写入，截断
|
||||
`w+` | 读写，截断
|
||||
`a` | 写，追加
|
||||
`a+` | 读写，追加
|
||||
|
||||
### 运行时定义的常量
|
||||
|
||||
```php
|
||||
define("CURRENT_DATE", date('Y-m-d'));
|
||||
// 一种可能的表示
|
||||
echo CURRENT_DATE; # => 2021-01-05
|
||||
# => CURRENT_DATE is: 2021-01-05
|
||||
echo 'CURRENT_DATE is: ' . CURRENT_DATE;
|
||||
```
|
||||
|
||||
另见
|
||||
----
|
||||
|
||||
- [PHP 官方中文文档](https://www.php.net/manual/zh/index.php) _(php.net)_
|
||||
- [Learn X in Y minutes](https://learnxinyminutes.com/docs/php/) _(learnxinyminutes.com)_
|
||||
@ -623,7 +623,7 @@ $ sudo systemctl restart postgresql
|
||||
|
||||
另见：[复制](https://www.postgresql.org/docs/current/sql-copy.html)
|
||||
|
||||
Also see
|
||||
--------
|
||||
另见
|
||||
----
|
||||
|
||||
- [Posgres-cheatsheet](https://gist.github.com/apolloclark/ea5466d5929e63043dcf#posgres-cheatsheet) _(gist.github.com)_
|
||||
|
||||
@ -1232,3 +1232,10 @@ else: # try/except 块的可选子句。 必须遵循除块
|
||||
finally: # 在所有情况下执行
|
||||
print("我们可以在这里清理资源")
|
||||
```
|
||||
|
||||
另见
|
||||
----
|
||||
|
||||
- [Python](https://www.python.org/) _(python.org)_
|
||||
- [Learn X in Y minutes](https://learnxinyminutes.com/docs/python/) _(learnxinyminutes.com)_
|
||||
- [Regex in python](./regex.md#python-中的正则表达式) _(quickref.me)_
|
||||
|
||||
@ -8,7 +8,7 @@ Quick Reference 备忘清单
|
||||
|
||||
### 本地编译预览
|
||||
|
||||
简单的将仓库克隆下来本地调试页面展示。
|
||||
将仓库克隆到本地调试页面。请参阅[贡献指南](https://github.com/jaywcjlove/reference/blob/main/CONTRIBUTING.md)了解如何开始
|
||||
|
||||
#### 克隆仓库
|
||||
|
||||
@ -22,12 +22,101 @@ git clone git@github.com:jaywcjlove/reference.git
|
||||
```shell
|
||||
npm i # 安装依赖
|
||||
npm run build # 编译输出 HTML
|
||||
npm run start # 监听 md 文件编译输出 HTML
|
||||
```
|
||||
|
||||
HTML 存放在仓库根目录下的 `dist` 目录中，将 `dist/index.html` 静态页面在浏览器中打开预览。
|
||||
|
||||
```shell
|
||||
npm run start # 监听 md 文件编译输出 HTML
|
||||
```
|
||||
|
||||
### 目录结构
|
||||
|
||||
```bash
|
||||
.
|
||||
├── CONTRIBUTING.md # 贡献说明
|
||||
├── Dockerfile
|
||||
├── LICENSE
|
||||
├── README.md # Home(首页) 内容
|
||||
├── dist # 编译后的静态资源目录
|
||||
├── docs # Markdown 文档（速查表）
|
||||
│ ├── bash.md
|
||||
│ ├── ....
|
||||
│ └── yaml.md
|
||||
├── package.json
|
||||
└── scripts # MD 转 HTML 的编译脚本
|
||||
├── assets # LOGO 图标文件资源
|
||||
├── ....
|
||||
└── watch.mjs
|
||||
```
|
||||
|
||||
### 添加一个备忘清单
|
||||
|
||||
一个简单的备忘清单包含 `页面大标题<h1>`，放在大标题下面的 `介绍` 文本，`<h2>` 分类标题，`<h3>` 内容为 `卡片`
|
||||
|
||||
```markdown
|
||||
备忘清单 (页面大标题)
|
||||
===
|
||||
|
||||
这是您可以在当前清单上使用的样式参考！备忘清单介绍
|
||||
|
||||
入门 (分类标题)
|
||||
---
|
||||
|
||||
### 介绍 (卡片)
|
||||
|
||||
卡片内容
|
||||
```
|
||||
|
||||
上面 markdown 内容存放到 `docs` 目录中，命名为 `xxx.md`
|
||||
|
||||
### 首页导航
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
首页(`README.md`)存放在仓库的根目录，通过这个 `README.md` 自动生成首页导航，下面是导航实例：
|
||||
|
||||
```markdown
|
||||
## Linux 命令
|
||||
|
||||
[Cron](./docs/cron.md)<!--rehype:style=background: rgb(239 68 68/var(\-\-bg\-opacity));-->
|
||||
<!--rehype:class=home-card-->
|
||||
```
|
||||
|
||||
首页导航图标存放在 `scripts/assets` 目录中，如果你的备忘清单定义为 `docs/cron.md`，那么你的图标就定义为 `cron.svg` 存放到 `scripts/assets` 目录中，重新编译首页当行菜单就拥有了图标。
|
||||
|
||||
- 图标存放在 [`scripts/assets`](https://github.com/jaywcjlove/reference/blob/main/scripts/assets) 目录中
|
||||
- 图片名称与清单名称保持一致 `cron.md` -> `cron.svg` (注意大小写)
|
||||
- SVG 图标尺寸 `<svg height="1em" width="1em"`
|
||||
- SVG 图标颜色使用继承颜色值 `<svg fill="currentColor"`
|
||||
- 使用 `<!--rehype:class=home-card-->` 标识卡片样式
|
||||
|
||||
### 首页提示配置
|
||||
|
||||
```markdown
|
||||
[Django](./docs/djiango.md)<!--rehype:style=background: rgb(12 75 51/var(\-\-bg\-opacity));&class=contributing-->
|
||||
```
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
添加 `contributing` 类名，会在卡片下方默认添加 `👆待完善需要您的参与`
|
||||
|
||||
```markdown
|
||||
class=tag&data-info=👆看看还缺点儿什么？
|
||||
```
|
||||
|
||||
上面示例将默认提示更改为： `👆看看还缺点儿什么？`
|
||||
|
||||
```markdown
|
||||
[Django](./docs/djiango.md)<!--rehype:style=background: rgb(12 75 51/var(\-\-bg\-opacity));&class=tag&data-lang=Python-->
|
||||
```
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
添加 `class=tag&data-lang=Python` 类名和参数，会在卡片右上角标记 _`Python`_
|
||||
|
||||
Markdown 语法注释
|
||||
---
|
||||
|
||||
### 介绍
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
在备忘清单采用 `HTML 注释语法`，标识网站布局和一些样式，目的是为了在 `GitHub` 中也是正常毫无瑕疵的预览 [`Markdown`](./markdown.md)。
|
||||
|
||||
@ -38,12 +127,12 @@ HTML 存放在仓库根目录下的 `dist` 目录中，将 `dist/index.html` 静
|
||||
卡片 Markdown 内容展示，下面注释语法为文字内容改变样式
|
||||
<!--rehype:style=color: red;-->
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
使用 `col-span-2` 类标识，卡片占 `2` 列位置
|
||||
上面基础示例，使用 `col-span-2` 类标识，卡片占 `2` 列位置，参考现有备忘清单的源代码是一个好习惯！
|
||||
|
||||
### 注释语法介绍
|
||||
<!--rehype:wrap-class=row-span-3&style=color:black;background-color: #d7a100;-->
|
||||
<!--rehype:wrap-class=row-span-4&style=color:black;background-color: #d7a100;-->
|
||||
|
||||
- 在某个 [`Markdown`](./markdown.md) 语法下方或者后面，添加 HTML注释
|
||||
- 以 `<!--rehype:` 开始，`-->` 结束，包裹参数内容
|
||||
@ -57,7 +146,7 @@ HTML 存放在仓库根目录下的 `dist` 目录中，将 `dist/index.html` 静
|
||||
#### 示例
|
||||
|
||||
```markdown
|
||||
### H2 部分
|
||||
## H2 部分
|
||||
<!--rehype:body-class=cols-2-->
|
||||
|
||||
### H3 部分
|
||||
@ -70,7 +159,7 @@ HTML 存放在仓库根目录下的 `dist` 目录中，将 `dist/index.html` 静
|
||||
### 标题
|
||||
<!--rehype:wrap-class=row-span-3&style=color:red;-->
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
#### 参数说明
|
||||
|
||||
@ -96,7 +185,7 @@ _我是红色_<!--rehype:style=color: red;-->
|
||||
**加粗变大红色**
|
||||
<!--rehype:style=color: red;font-size: 18px-->
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
<!--rehype:className=wrap-text-->
|
||||
|
||||
上面添加注释样式，文字 _加粗变大红色_<!--rehype:style=color: red;font-size: 18px--> 变`红`并且`大`了
|
||||
|
||||
@ -106,7 +195,7 @@ _我是红色_<!--rehype:style=color: red;-->
|
||||
\```js
|
||||
function () {}
|
||||
\```
|
||||
<!--rehype:className=wrap-text -->
|
||||
<!--rehype:className=wrap-text-->
|
||||
```
|
||||
|
||||
如果代码块内容太长，使用强制换行类(`wrap-text`)解决
|
||||
@ -149,11 +238,11 @@ export const Student = (
|
||||
添加注释配置 `<!--rehype:tooltips-->` 添加一个 Tooltips 提示。
|
||||
|
||||
### H3 部分(卡片)背景颜色
|
||||
<!--rehype:wrap-style=background: #00c69357;-->
|
||||
<!--rehype:wrap-style=background: #8dffd42e;-->
|
||||
|
||||
```markdown
|
||||
### H3 部分(卡片)背景颜色
|
||||
<!--rehype:wrap-style=background: #00c69357;-->
|
||||
<!--rehype:wrap-style=background: #8dffd42e;-->
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
@ -214,35 +303,6 @@ const school = <div>学校</div>;
|
||||
`<del>` 或 `~~删除~~` | <del>~~红色~~</del>
|
||||
<!--rehype:className=shortcuts-->
|
||||
|
||||
### 注释类配置
|
||||
<!--rehype:wrap-class=col-span-2 row-span-2-->
|
||||
|
||||
类 | 说明
|
||||
---- | ----
|
||||
`<!--rehype:className=wrap-text-->` | 强制换行
|
||||
`<!--rehype:className=show-header-->` | 展示表格表头
|
||||
`<!--rehype:className=shortcuts-->` | 快捷键样式
|
||||
`<!--rehype:className=auto-wrap-->` | 隐藏表头强制小尺寸自动换行
|
||||
`<!--rehype:className=style-list-arrow-->` | 列表箭头样式展示表格
|
||||
`<!--rehype:className=style-list-->` | 列表样式展示表格
|
||||
`<!--rehype:className=left-align-->` | 表格末尾列左对齐
|
||||
`<!--rehype:className=style-none-->` | \<li> 没有标记
|
||||
`<!--rehype:className=style-timeline-->` | 时间轴样式
|
||||
`<!--rehype:className=style-arrow-->` | 箭头标记
|
||||
|
||||
### 隐藏卡片标题
|
||||
<!--rehype:style=display:none;&wrap-style=padding-top: 0;-->
|
||||
|
||||
```
|
||||
隐藏卡片标题，在 H3 标题下面添加注释样式
|
||||
```
|
||||
|
||||
```markdown {2}
|
||||
### 隐藏卡片标题
|
||||
<!--rehype:style=display:none;&wrap-style=padding-top: 0;-->
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### HTML 代码预览
|
||||
|
||||
```
|
||||
@ -259,6 +319,35 @@ const school = <div>学校</div>;
|
||||
|
||||
上面的 [`markdown`](./markdown.md) 代码在 `meta` 位置添加 `preview` 标识，[HTML](./html.md) 代码将被执行预览
|
||||
|
||||
### 隐藏卡片标题
|
||||
<!--rehype:style=display:none;&wrap-style=padding-top: 0;-->
|
||||
|
||||
```
|
||||
隐藏卡片标题，在 H3 标题下面添加注释样式
|
||||
```
|
||||
|
||||
```markdown {2}
|
||||
### 隐藏卡片标题
|
||||
<!--rehype:style=display:none;&wrap-style=padding-top: 0;-->
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 注释类配置
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
类 | 说明
|
||||
---- | ----
|
||||
`<!--rehype:className=wrap-text-->` | 强制换行
|
||||
`<!--rehype:className=show-header-->` | 展示表格表头
|
||||
`<!--rehype:className=shortcuts-->` | 快捷键样式
|
||||
`<!--rehype:className=auto-wrap-->` | 隐藏表头强制小尺寸自动换行
|
||||
`<!--rehype:className=style-list-arrow-->` | 列表箭头样式展示表格
|
||||
`<!--rehype:className=style-list-->` | 列表样式展示表格
|
||||
`<!--rehype:className=left-align-->` | 表格末尾列左对齐
|
||||
`<!--rehype:className=style-none-->` | \<li> 没有标记
|
||||
`<!--rehype:className=style-timeline-->` | 时间轴样式
|
||||
`<!--rehype:className=style-arrow-->` | 箭头标记
|
||||
|
||||
### KaTeX 数学渲染
|
||||
|
||||
```KaTeX
|
||||
|
||||
@ -452,7 +452,7 @@ M(?(?=.*?\bher\b)s|r)\.
|
||||
|
||||
表达式 | 匹配示例
|
||||
:- | -
|
||||
`.ar` | The `car` `par`ked in the `gar`age.
|
||||
`.ar` | The `car` <pur>`par`</pur>ked in the `gar`age.
|
||||
`ar[.]` | A garage is a good place to park a c`ar`.
|
||||
<!--rehype:className=show-header-->
|
||||
|
||||
@ -474,7 +474,7 @@ M(?(?=.*?\bher\b)s|r)\.
|
||||
|
||||
表达式 | 匹配示例
|
||||
:- | -
|
||||
`[a-z]*` | T`he` `car` `parked` `in` `the` `garage` #21.
|
||||
`[a-z]*` | T`he` <pur>`car`</pur> `parked` <pur>`in`</pur> `the` <pur>`garage`</pur> #21.
|
||||
`\s*cat\s*` | The fat `cat` sat on the con`cat`enation.
|
||||
|
||||
表达式 `[a-z]*` 匹配一个行中所有以小写字母开头的字符串。
|
||||
@ -503,7 +503,7 @@ M(?(?=.*?\bher\b)s|r)\.
|
||||
`[0-9]{2,3}` | The number was 9.`999`7 but we rounded it off to `10`.0.
|
||||
`[0-9]{2,}` | The number was 9.`9997` but we rounded it off to `10`.0.
|
||||
`[0-9]{3}` | The number was 9.`999`7 but we rounded it off to 10.0.
|
||||
<!--rehype:className=show-header-->
|
||||
<!--rehype:className=style-list-arrow-->
|
||||
|
||||
### `(...)` 特征标群
|
||||
|
||||
@ -616,7 +616,7 @@ M(?(?=.*?\bher\b)s|r)\.
|
||||
表达式 | 匹配示例
|
||||
:- | -
|
||||
`The` | The `fat` cat sat on the mat.
|
||||
`/The/gi` | The `fat` `cat` `sat` on the `mat`.
|
||||
`/The/gi` | `The` fat cat sat on `the` mat.
|
||||
<!--rehype:className=show-header-->
|
||||
|
||||
修饰语 `i` 用于忽略大小写，`g` 表示全局搜索。
|
||||
@ -722,7 +722,7 @@ False
|
||||
函数 | 说明
|
||||
:-|-
|
||||
`re.findall` | 返回包含所有匹配项的列表
|
||||
`re.finditer` | 返回一个可迭代的匹配对象（每个匹配一个）
|
||||
`re.finditer` | 返回一个可迭代的匹配对象<br/> _(每个匹配一个)_
|
||||
`re.search` | 如果字符串中的任何位置存在匹配项，则返回 Match 对象
|
||||
`re.split` | 返回一个列表，其中字符串在每次匹配时被拆分
|
||||
`re.sub` | 用字符串替换一个或多个匹配项
|
||||
|
||||
651
docs/rust.md
651
docs/rust.md
@ -19,6 +19,7 @@ fn main() {
|
||||
```shell
|
||||
$ rustc Hello_World.rs
|
||||
$ ./Hello_World
|
||||
|
||||
Hello, World!
|
||||
```
|
||||
|
||||
@ -142,25 +143,55 @@ foo!(3);
|
||||
|
||||
### 结构体
|
||||
|
||||
结构体是一个使用关键字 `struct` 定义的标称型(nominal)结构体类型
|
||||
|
||||
```rust
|
||||
struct Point { x: i32, y: i32 }
|
||||
let p = Point { x: 10, y: 11 };
|
||||
let px: i32 = p.x;
|
||||
```
|
||||
|
||||
结构体是一个使用关键字 `struct` 定义的标称型(nominal)结构体类型
|
||||
|
||||
### 枚举
|
||||
#### 元祖结构体
|
||||
|
||||
```rust
|
||||
enum Foo {
|
||||
Bar, // 0
|
||||
Baz = 123, // 123
|
||||
Quux, // 124
|
||||
}
|
||||
struct Color (i32, i32, i32);
|
||||
let black = Color(0,0,0);
|
||||
```
|
||||
|
||||
let baz_discriminant = Foo::Baz as u32;
|
||||
assert_eq!(baz_discriminant, 123);
|
||||
#### 单元结构体
|
||||
|
||||
不关心该类型的内容, 只关心它的行为。
|
||||
|
||||
```rust
|
||||
struct Solution;
|
||||
impl Solution{
|
||||
// ...
|
||||
}
|
||||
```
|
||||
|
||||
### 语句与表达式
|
||||
|
||||
在 rust 中，语句无需返回值，而表达式总要返回值
|
||||
|
||||
#### 语句
|
||||
|
||||
```rust
|
||||
let a = "hello".to_string();
|
||||
let b = a + " world";
|
||||
println!("{}", b);
|
||||
```
|
||||
|
||||
#### 表达式
|
||||
|
||||
```rust
|
||||
fn main(){
|
||||
let x = {
|
||||
let a = "hello".to_string();
|
||||
a + " world"
|
||||
};
|
||||
println!("{}", x);
|
||||
// hello world
|
||||
}
|
||||
```
|
||||
|
||||
Rust 类型
|
||||
@ -220,6 +251,9 @@ println!("社区的名称是 {community_name}，它有 {no_of_members} 个成员
|
||||
查看: [字符串](#rust-字符串)
|
||||
|
||||
### 数组
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
这里介绍的是固定长度的数组。rust 中常用的是集合类型 vec 表示的[动态数组](#rust-动态数组)
|
||||
|
||||
```rust
|
||||
┌─────┬─────┬─────┬─────┬─────┬─────┐
|
||||
@ -234,28 +268,8 @@ println!("社区的名称是 {community_name}，它有 {no_of_members} 个成员
|
||||
let array: [i64; 6] = [92,97,98,99,98,94];
|
||||
```
|
||||
|
||||
### 多维数组
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```rust
|
||||
j0 j1 j2 j3 j4 j5
|
||||
┌────┬────┬────┬────┬────┬────┐
|
||||
i0 | 1 | 2 | 3 | 4 | 5 | 6 |
|
||||
├────┼────┼────┼────┼────┼────┤
|
||||
i1 | 6 | 5 | 4 | 3 | 2 | 1 |
|
||||
└────┴────┴────┴────┴────┴────┘
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
```rust
|
||||
let array: [[i64; 6] ;2] = [
|
||||
[1,2,3,4,5,6],
|
||||
[6,5,4,3,2,1]];
|
||||
```
|
||||
|
||||
### 可变数组
|
||||
|
||||
```rust
|
||||
let mut array: [i32 ; 3] = [2,6,10];
|
||||
array[1] = 4;
|
||||
@ -273,14 +287,6 @@ let mut slices: &[i64] = &array[0..3]
|
||||
println!("切片的元素是：{slices:?}");
|
||||
```
|
||||
|
||||
### 向量
|
||||
|
||||
```rust
|
||||
let some_vector = vec![1,2,3,4,5];
|
||||
```
|
||||
|
||||
使用 `vec!` 宏声明向量
|
||||
|
||||
### 元组
|
||||
|
||||
```rust
|
||||
@ -411,8 +417,28 @@ println!("{:?}", element2);
|
||||
}
|
||||
```
|
||||
|
||||
### 多维数组
|
||||
|
||||
```rust
|
||||
j0 j1 j2 j3 j4 j5
|
||||
┌────┬────┬────┬────┬────┬────┐
|
||||
i0 | 1 | 2 | 3 | 4 | 5 | 6 |
|
||||
├────┼────┼────┼────┼────┼────┤
|
||||
i1 | 6 | 5 | 4 | 3 | 2 | 1 |
|
||||
└────┴────┴────┴────┴────┴────┘
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
```rust
|
||||
let arr = vec![
|
||||
vec![1, 2, 3, 4, 5, 6],
|
||||
vec![6, 5, 4, 3, 2, 1]
|
||||
];
|
||||
```
|
||||
|
||||
### 常用方法
|
||||
<!--rehype:wrap-class=col-span-3-->
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
-|:-
|
||||
-|:-
|
||||
@ -429,6 +455,86 @@ println!("{:?}", element2);
|
||||
`drain(range)` | 删除 `vec` 中指定范围的元素,同时返回一个迭代该范围所有元素的迭代器
|
||||
`split_off(index)` | 切分 `vec`，索引左边的元素保留在原 `vec` 中(含索引)，索引右边的元素(不含索引)在返回的 `vec` 中
|
||||
|
||||
枚举
|
||||
--------
|
||||
|
||||
### 在结构体中使用枚举
|
||||
|
||||
```rust
|
||||
enum IpAddrKind {
|
||||
V4,
|
||||
V6,
|
||||
}
|
||||
struct IpAddr {
|
||||
kind: IpAddrKind,
|
||||
address: String,
|
||||
}
|
||||
|
||||
fn main(){
|
||||
let ip = IpAddr{
|
||||
kind: IpAddrKind::V4,
|
||||
address: String::from("127.0.0.1")
|
||||
};
|
||||
}
|
||||
```
|
||||
|
||||
### 枚举的变体
|
||||
|
||||
```rust
|
||||
enum IpAddrKind {
|
||||
V4(u8, u8, u8, u8),
|
||||
V6(String),
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let home = IpAddrKind::V4(127, 0, 0, 1);
|
||||
let loopback = IpAddrKind::V6(String::from("::1"));
|
||||
}
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
```rust
|
||||
enum Message{
|
||||
Quit,
|
||||
Move {x:i32, y:i32},
|
||||
Write(String),
|
||||
ChangeColor(i32, i32, i32),
|
||||
}
|
||||
fn main(){
|
||||
let q = Message::Quit;
|
||||
let m = Message::Move {x:10, y:20};
|
||||
let w = Message:: Write(String::from("hello"));
|
||||
let c = Message::ChangeColor(10, 20, 30);
|
||||
}
|
||||
```
|
||||
|
||||
### 模式匹配结构体
|
||||
|
||||
```rust
|
||||
#[derive(Debug)]
|
||||
enum Grade {
|
||||
A,
|
||||
B,
|
||||
C,
|
||||
}
|
||||
enum Subject {
|
||||
Math(Grade),
|
||||
English(Grade),
|
||||
}
|
||||
|
||||
fn subject_grade(sub: Subject) {
|
||||
match sub {
|
||||
Subject::Math(grade) => println!("The Math is {:?}", grade),
|
||||
Subject::English(grade) => println!("The Math is {:?}", grade),
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
subject_grade(Subject::Math(Grade::A));
|
||||
}
|
||||
```
|
||||
|
||||
Rust 运算符
|
||||
-----------
|
||||
|
||||
@ -535,29 +641,7 @@ let mut l = k;
|
||||
Rust 流程控制
|
||||
------------
|
||||
|
||||
### If表达式
|
||||
|
||||
```rust
|
||||
let case1: i32 = 81;
|
||||
let case2: i32 = 82;
|
||||
if case1 < case2 {
|
||||
println!("case1 大于 case2");
|
||||
}
|
||||
```
|
||||
|
||||
### If...Else 表达式
|
||||
|
||||
```rust
|
||||
let case3 = 8;
|
||||
let case4 = 9;
|
||||
if case3 >= case4 {
|
||||
println!("case3 优于 case4");
|
||||
} else {
|
||||
println!("case4 大于 case3");
|
||||
}
|
||||
```
|
||||
|
||||
### If...Else...if...Else 表达式
|
||||
### If 表达式
|
||||
|
||||
```rust
|
||||
let foo = 12;
|
||||
@ -573,101 +657,30 @@ if foo == bar {
|
||||
}
|
||||
```
|
||||
|
||||
### If...let 表达式
|
||||
<!--rehype:wrap-class=row-span-3-->
|
||||
|
||||
```rust
|
||||
let mut arr1:[i64 ; 3] = [1,2,3];
|
||||
if let[1,2,_] = arr1{
|
||||
println!("与数组一起使用");
|
||||
}
|
||||
let mut arr2:[&str; 2] = ["one", "two"];
|
||||
if let["Apple", _] = arr2{
|
||||
println!("也适用于 str 数组");
|
||||
}
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
```rust
|
||||
let tuple_1 = ("India", 7, 90, 90.432);
|
||||
if let(_, 7, 9, 78.99) = tuple_1{
|
||||
println!("也适用于元组");
|
||||
}
|
||||
let tuple_2 = ( 9, 7, 89, 12, "Okay");
|
||||
if let(9, 7,89, 12, blank) = tuple_2 {
|
||||
println!("一切{blank}伴侣？");
|
||||
}
|
||||
let tuple_3 = (89, 90, "Yes");
|
||||
if let(9, 89, "Yes") = tuple_3{
|
||||
println!("模式确实匹配");
|
||||
}
|
||||
else {
|
||||
println!("模式不匹配");
|
||||
}
|
||||
```
|
||||
|
||||
### 匹配表达式
|
||||
<!--rehype:wrap-class=row-span-3-->
|
||||
|
||||
```rust
|
||||
let day_of_week = 2;
|
||||
match day_of_week {
|
||||
1 => {
|
||||
println!("兄弟们今天是星期一");
|
||||
},
|
||||
2 => {
|
||||
println!("兄弟们今天是星期二");
|
||||
},
|
||||
3 => {
|
||||
println!("兄弟们今天是星期三");
|
||||
},
|
||||
4 => {
|
||||
println!("兄弟们今天是星期四");
|
||||
},
|
||||
5 => {
|
||||
println!("兄弟们今天是星期五");
|
||||
},
|
||||
6 => {
|
||||
println!("兄弟们今天是星期六");
|
||||
},
|
||||
7 => {
|
||||
println!("兄弟们今天是星期天");
|
||||
},
|
||||
_ => {
|
||||
println!("默认!")
|
||||
}
|
||||
};
|
||||
```
|
||||
|
||||
### 嵌套...If 表达式
|
||||
|
||||
```rust
|
||||
let nested_conditions = 89;
|
||||
if nested_conditions == 89 {
|
||||
let just_a_value = 98;
|
||||
if just_a_value >= 97 {
|
||||
println!("大于 97");
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
### For 循环
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
|
||||
```rust
|
||||
for mut i in 0..15 {
|
||||
i-=1;
|
||||
println!("i 的值为：{i}");
|
||||
let mut vec = [1, 2, 3];
|
||||
for v in &mut vec {
|
||||
*v -= 1;
|
||||
println!("v 的值为：{v}");
|
||||
}
|
||||
```
|
||||
|
||||
使用方法 | 等价使用方式 | 所有权
|
||||
:-|:-:|:-
|
||||
for item in collection | for item in collection.into_iter() | 转移所有权
|
||||
for item in &collection | for item in collection.iter() | 不可变借用
|
||||
for item in &mut collection | for item in collection.iter_mut() | 可变借用
|
||||
|
||||
### While 循环
|
||||
|
||||
```rust
|
||||
let mut check = 0;
|
||||
while check < 11{
|
||||
println!("check 是：{check}");
|
||||
check+=1;
|
||||
check += 1;
|
||||
println!("递增后：{check}");
|
||||
if check == 10{
|
||||
break; // 停止 while
|
||||
@ -675,7 +688,7 @@ while check < 11{
|
||||
}
|
||||
```
|
||||
|
||||
### Loop 关键字
|
||||
### Loop 循环
|
||||
|
||||
```rust
|
||||
loop {
|
||||
@ -685,19 +698,6 @@ loop {
|
||||
|
||||
无限循环表示
|
||||
|
||||
### Break 中断语句
|
||||
|
||||
```rust
|
||||
let mut i = 1;
|
||||
loop {
|
||||
println!("i 是 {i}");
|
||||
if i > 100 {
|
||||
break;
|
||||
}
|
||||
i *= 2;
|
||||
}
|
||||
```
|
||||
|
||||
### Continue 继续声明
|
||||
|
||||
```rust
|
||||
@ -711,118 +711,279 @@ for (v, c) in (0..10+1).enumerate(){
|
||||
}
|
||||
```
|
||||
|
||||
### Break 中断语句
|
||||
|
||||
`break` 可以单独使用，也可以带一个返回值
|
||||
|
||||
```rust
|
||||
let mut i = 1;
|
||||
let res = loop {
|
||||
println!("i 是 {i}");
|
||||
if i > 100 {
|
||||
break i - 100;
|
||||
}
|
||||
i *= 2;
|
||||
}
|
||||
|
||||
println!("{res}"); // 28
|
||||
```
|
||||
|
||||
Rust 模式匹配
|
||||
--------
|
||||
|
||||
### match
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
match 模式匹配，使用 `a | b` 表示匹配 a **或** b，使用 `_`，表示匹配剩余所有选项
|
||||
|
||||
```rust
|
||||
fn main(){
|
||||
let grade = Grade::A;
|
||||
match grade {
|
||||
Grade::A => println!("Good"),
|
||||
Grade::B => println!("Not bad"),
|
||||
Grade::C | Grade::D => println!("Come on"),
|
||||
_ => println!("emmm"),
|
||||
}
|
||||
}
|
||||
|
||||
enum Grade {
|
||||
A,
|
||||
B,
|
||||
C,
|
||||
D,
|
||||
E,
|
||||
F,
|
||||
}
|
||||
```
|
||||
|
||||
#### `matches!` 宏
|
||||
|
||||
它可以将一个表达式跟模式进行匹配，然后返回匹配的结果 `true` 或 `false`
|
||||
|
||||
```rust
|
||||
assert!(matches!('x' ',A'..='Z' | 'a'..='z'));
|
||||
assert!(matches!(Some(101), Some(x) if x > 100));
|
||||
```
|
||||
|
||||
### if let 匹配
|
||||
|
||||
match 表达式需要匹配所有的枚举才能结束，但通常我们只需要匹配我们需要的值
|
||||
|
||||
```rust
|
||||
let x = 3;
|
||||
match Some(x) {
|
||||
Some(3) => println!("I guess that x is 3"),
|
||||
_ => ()
|
||||
}
|
||||
```
|
||||
|
||||
使用 `if let`
|
||||
|
||||
```rust
|
||||
let x = 3;
|
||||
if let Some(3) = Some(x) {
|
||||
println!("I guess that x is 3");
|
||||
}
|
||||
```
|
||||
|
||||
### while let
|
||||
|
||||
```rust
|
||||
let mut stack = vec![];
|
||||
|
||||
stack.push(1);
|
||||
stack.push(2);
|
||||
stack.push(3);
|
||||
|
||||
while let Some(top) = stack.pop() {
|
||||
println!("{}", top);
|
||||
}
|
||||
```
|
||||
|
||||
### 其它模式匹配
|
||||
|
||||
#### for 循环迭代器
|
||||
|
||||
```rust
|
||||
for (i, v) in collection.iter().enumerate(){}
|
||||
```
|
||||
|
||||
#### let
|
||||
|
||||
```rust
|
||||
let (x, _, y) = (1, 2, 3);
|
||||
println!("{x},{y}");
|
||||
```
|
||||
|
||||
### 函数中的模式匹配
|
||||
|
||||
```rust
|
||||
fn add((x, y): (i32, i32)) -> i32 {
|
||||
x + y
|
||||
}
|
||||
fn main(){
|
||||
let sum = add(1, 2);
|
||||
println!("{sum}");
|
||||
}
|
||||
```
|
||||
|
||||
### 忽略参数
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
#### 使用 `..` 忽略剩余参数
|
||||
|
||||
```rust
|
||||
struct Point {
|
||||
x: i32,
|
||||
y: i32,
|
||||
z: i32,
|
||||
}
|
||||
|
||||
let origin = Point { x: 0, y: 0, z: 0 };
|
||||
|
||||
match origin {
|
||||
Point { x, .. } => println!("x is {}", x),
|
||||
}
|
||||
```
|
||||
|
||||
#### 使用 `_` 忽略部分参数
|
||||
|
||||
```rust
|
||||
let hello = ('h', 'e', 'l', 'l', 'o');
|
||||
|
||||
match hello {
|
||||
(h, _, _, l, o) => {
|
||||
println!("char: {}, {}, {}", h, l, o)
|
||||
},
|
||||
}
|
||||
```
|
||||
|
||||
### 匹配命名变量
|
||||
|
||||
以下代码，只要给定的 x 是 Some 类型，但 Some 中的值不是 1，都会匹配到 y
|
||||
|
||||
```rust
|
||||
let x = Some(10);
|
||||
match x {
|
||||
Some(1) => println!("x = 1"),
|
||||
Some(y) => println!("y = {:?}", y),
|
||||
_ => println!("None"),
|
||||
}// y = 10
|
||||
```
|
||||
|
||||
### `@` 绑定
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
`@` 运算符允许为一个字段绑定另外一个变量。
|
||||
|
||||
```rust
|
||||
let grade = 'A';
|
||||
match grade {
|
||||
good @ 'A'..='C' => println!("your grade is {}", good),
|
||||
_ => println!("Come on"),
|
||||
}
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
```rust
|
||||
#[derive(Debug)]
|
||||
struct Point {
|
||||
x: i32,
|
||||
y: i32,
|
||||
}
|
||||
fn main(){
|
||||
let p @ Point {x: px, y: py } = Point {x: 10, y: 23};
|
||||
println!("x: {}, y: {}", px, py);
|
||||
println!("{:?}", p);
|
||||
}
|
||||
```
|
||||
|
||||
----
|
||||
|
||||
如果使用 `|`，需要使用 `()`，进行多个模式的绑定
|
||||
|
||||
```rust
|
||||
match 1 {
|
||||
num @ (1 | 2) => {
|
||||
println!("{}", num);
|
||||
}
|
||||
_ => {}
|
||||
}
|
||||
```
|
||||
|
||||
### 使用匹配守卫
|
||||
|
||||
```rust
|
||||
let x = Some(2);
|
||||
match x {
|
||||
Some(1) => println!("x = 1"),
|
||||
Some(y) if y == 2 => println!("y = {:?}", y),
|
||||
_ => println!("No match"),
|
||||
}// y = 2
|
||||
```
|
||||
|
||||
Rust 函数
|
||||
--------
|
||||
|
||||
### 基本函数
|
||||
### 函数命名
|
||||
|
||||
rust 的函数使用蛇形命名法（snake case）
|
||||
|
||||
```rust
|
||||
fn print_message(){
|
||||
println!("Hello, Quick Reference!");
|
||||
}
|
||||
fn main(){
|
||||
// 在 Rust 中调用函数
|
||||
print_message();
|
||||
}
|
||||
```
|
||||
|
||||
### 按值传递
|
||||
### 参数值
|
||||
|
||||
rust 需要为函数的参数标明确定的类型
|
||||
|
||||
```rust
|
||||
fn main()
|
||||
{
|
||||
let x:u32 = 10;
|
||||
let y:u32 = 20;
|
||||
|
||||
// => 200
|
||||
println!("计算: {}", cal_rect(x, y));
|
||||
fn another_fn(a:u8, b: &str){
|
||||
println!("我是 u8:{}", a);
|
||||
println!("我是 &str:{}", b);
|
||||
}
|
||||
fn cal_rect(x:u32, y:u32) -> u32
|
||||
{
|
||||
x * y
|
||||
|
||||
fn main(){
|
||||
another_fn(10, "hello")
|
||||
}
|
||||
```
|
||||
|
||||
### 通过引用传递
|
||||
### 返回值
|
||||
|
||||
如果不指定返回值，rust 默认返回 `()` 类型
|
||||
|
||||
```rust
|
||||
fn main(){
|
||||
let mut by_ref = 3; // => 3
|
||||
power_of_three(&mut by_ref);
|
||||
println!("{by_ref}"); // => 9
|
||||
}
|
||||
fn power_of_three(by_ref: &mut i32){
|
||||
// 取消引用很重要
|
||||
*by_ref = *by_ref * *by_ref;
|
||||
println!("{by_ref}"); // => 9
|
||||
}
|
||||
// 在 bin 中的入口函数默认返回 ()
|
||||
fn main(){}
|
||||
```
|
||||
|
||||
### 返回
|
||||
----
|
||||
|
||||
使用 `->` 指定返回值，如果**表达式**在最后一行，无需使用 return
|
||||
|
||||
```rust
|
||||
fn main(){
|
||||
let (mut radius, mut pi) = (3.0, 3.14);
|
||||
let(area, _perimeter) = calculate (
|
||||
&mut radius,
|
||||
&mut pi
|
||||
);
|
||||
println!("圆的面积和周长为：{area} & {_perimeter}");
|
||||
}
|
||||
fn calculate(radius : &mut f64, pi: &mut f64) -> (f64, f64){
|
||||
let perimeter = 2.0 * *pi * *radius;
|
||||
let area = *pi * *radius * *radius;
|
||||
return (area, perimeter);
|
||||
fn add(a:i32, b:i32) -> i32 {
|
||||
if a + b < 100 {
|
||||
return a - b;
|
||||
}
|
||||
a + b
|
||||
}
|
||||
```
|
||||
|
||||
### 永不返回 `!`
|
||||
|
||||
```rust
|
||||
fn dead_end() -> ! {
|
||||
panic!("panic!!!!!");
|
||||
}
|
||||
```
|
||||
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 数组作为参数
|
||||
|
||||
```rust
|
||||
fn main(){
|
||||
let mut array: [i32 ; 5] = [1,2,3,4,6];
|
||||
print_arrays(array);
|
||||
println!("元素：{array:?}");
|
||||
}
|
||||
fn print_arrays(mut array:[i32; 5]) {
|
||||
array[0] = 89;
|
||||
array[1] = 90;
|
||||
array[2] = 91;
|
||||
array[3] = 92;
|
||||
array[4] = 93;
|
||||
println!("元素：{array:?}");
|
||||
}
|
||||
```
|
||||
|
||||
### 返回数组
|
||||
|
||||
```rust
|
||||
fn main(){
|
||||
let mut arr:[i32; 5] = [2,4,6,8,10];
|
||||
multiply(arr);
|
||||
println!("数组是：{:?}", multiply(arr));
|
||||
}
|
||||
fn multiply (mut arr: [i32 ; 5]) -> [i32 ; 5]{
|
||||
arr[2] = 90;
|
||||
for mut i in 0..5 {
|
||||
arr[i] = arr[i] * arr[2];
|
||||
}
|
||||
return arr;
|
||||
}
|
||||
```
|
||||
<!--rehype:className=wrap-text -->
|
||||
|
||||
### 泛型函数
|
||||
|
||||
```rust
|
||||
use std::fmt::Debug;
|
||||
fn foo<T>(x: &[T]) where T: Debug {
|
||||
// 省略细节
|
||||
}
|
||||
foo(&[1, 2]);
|
||||
```
|
||||
|
||||
杂项
|
||||
-----
|
||||
|
||||
|
||||
@ -10,8 +10,8 @@ TypeScript 备忘清单
|
||||
|
||||
TypeScript 是具有类型语法的 JavaScript。Interface 是为了匹配它们的运行时行为而构建的。
|
||||
|
||||
- [JavaScript 备忘清单](./javascript.md)
|
||||
- [TypeScript 官网](https://www.typescriptlang.org/)
|
||||
- [JavaScript 备忘清单](./javascript.md) _(jaywcjlove.github.io)_
|
||||
- [TypeScript 官网](https://www.typescriptlang.org/) _(typescriptlang.org)_
|
||||
|
||||
### 内置类型基元
|
||||
|
||||
@ -1264,3 +1264,52 @@ class Select<T> extends React.Component<SelectProps<T>, any> {}
|
||||
// 使用
|
||||
const Form = () => <Select<string> items={['a', 'b']} />;
|
||||
```
|
||||
|
||||
各种各样的技巧
|
||||
---
|
||||
|
||||
### keyof 取 interface 的键
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
|
||||
```ts
|
||||
interface Point {
|
||||
x: number;
|
||||
y: number;
|
||||
}
|
||||
|
||||
// type keys = "x" | "y"
|
||||
type keys = keyof Point;
|
||||
```
|
||||
|
||||
### 索引签名
|
||||
|
||||
```ts
|
||||
interface NumberOrString {
|
||||
[index: string]: string | number;
|
||||
length: number;
|
||||
name: string;
|
||||
}
|
||||
```
|
||||
|
||||
### 从数组中提取类型
|
||||
|
||||
```ts
|
||||
type Point = { x: number; y: number; }
|
||||
type Data = Point[];
|
||||
// Data 是个数组，提取里面的元素类型
|
||||
type PointDetail = Data[number];
|
||||
// type PointDetail = { x: number; y: number; }
|
||||
```
|
||||
|
||||
### 只读元组类型
|
||||
|
||||
```ts
|
||||
const point = [3, 4] as const
|
||||
// type 'readonly [3, 4]'
|
||||
```
|
||||
|
||||
另见
|
||||
----
|
||||
|
||||
- [JavaScript 备忘清单](./javascript.md)
|
||||
- [TypeScript 官网](https://www.typescriptlang.org/) _(typescriptlang.org)_
|
||||
|
||||
@ -408,7 +408,7 @@ Vim 搜索和替换
|
||||
`?foo` | 向后搜索
|
||||
`/\v\d+` | 使用 [regex](./regex.md) 搜索
|
||||
`n` | 下一个匹配的搜索模式
|
||||
`N` | 上一场比赛
|
||||
`N` | 上一个匹配的搜索
|
||||
`*` | 向前搜索当前单词
|
||||
`#` | 向后搜索当前单词
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
{
|
||||
"name": "@wcj/reference",
|
||||
"version": "1.19.0",
|
||||
"version": "1.20.0",
|
||||
"description": "为开发人员分享快速参考备忘单(主要是方便自己)。",
|
||||
"author": "jaywcjlove",
|
||||
"license": "MIT",
|
||||
|
||||
3
scripts/assets/dart.svg
Normal file
3
scripts/assets/dart.svg
Normal file
@ -0,0 +1,3 @@
|
||||
<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" fill="currentColor" height="1em" width="1em">
|
||||
<path d="M4.105 4.105S9.158 1.58 11.684.316a3.079 3.079 0 0 1 1.481-.315c.766.047 1.677.788 1.677.788L24 9.948v9.789h-4.263V24H9.789l-9-9C.303 14.5 0 13.795 0 13.105c0-.319.18-.818.316-1.105l3.789-7.895zm.679.679v11.787c.002.543.021 1.024.498 1.508L10.204 23h8.533v-4.263L4.784 4.784zm12.055-.678c-.899-.896-1.809-1.78-2.74-2.643-.302-.267-.567-.468-1.07-.462-.37.014-.87.195-.87.195L6.341 4.105l10.498.001z"/>
|
||||
</svg>
|
||||
|
After Width: | Height: | Size: 526 B |
3
scripts/assets/latex.svg
Normal file
3
scripts/assets/latex.svg
Normal file
File diff suppressed because one or more lines are too long
|
After Width: | Height: | Size: 5.6 KiB |
3
scripts/assets/php.svg
Normal file
3
scripts/assets/php.svg
Normal file
@ -0,0 +1,3 @@
|
||||
<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" fill="currentColor" height="1em" width="1em">
|
||||
<path d="M7.01 10.207h-.944l-.515 2.648h.838c.556 0 .97-.105 1.242-.314.272-.21.455-.559.55-1.049.092-.47.05-.802-.124-.995-.175-.193-.523-.29-1.047-.29zM12 5.688C5.373 5.688 0 8.514 0 12s5.373 6.313 12 6.313S24 15.486 24 12c0-3.486-5.373-6.312-12-6.312zm-3.26 7.451c-.261.25-.575.438-.917.551-.336.108-.765.164-1.285.164H5.357l-.327 1.681H3.652l1.23-6.326h2.65c.797 0 1.378.209 1.744.628.366.418.476 1.002.33 1.752a2.836 2.836 0 0 1-.305.847c-.143.255-.33.49-.561.703zm4.024.715.543-2.799c.063-.318.039-.536-.068-.651-.107-.116-.336-.174-.687-.174H11.46l-.704 3.625H9.388l1.23-6.327h1.367l-.327 1.682h1.218c.767 0 1.295.134 1.586.401s.378.7.263 1.299l-.572 2.944h-1.389zm7.597-2.265a2.782 2.782 0 0 1-.305.847c-.143.255-.33.49-.561.703a2.44 2.44 0 0 1-.917.551c-.336.108-.765.164-1.286.164h-1.18l-.327 1.682h-1.378l1.23-6.326h2.649c.797 0 1.378.209 1.744.628.366.417.477 1.001.331 1.751zm-2.595-1.382h-.943l-.516 2.648h.838c.557 0 .971-.105 1.242-.314.272-.21.455-.559.551-1.049.092-.47.049-.802-.125-.995s-.524-.29-1.047-.29z"/>
|
||||
</svg>
|
||||
|
After Width: | Height: | Size: 1.1 KiB |
@ -162,14 +162,17 @@ menu {
|
||||
padding: 0;
|
||||
}
|
||||
|
||||
yel {
|
||||
color: var(--color-prettylights-syntax-variable);
|
||||
yel,
|
||||
yel code {
|
||||
color: var(--color-prettylights-syntax-variable) !important;
|
||||
}
|
||||
red {
|
||||
color: var(--color-danger-fg);
|
||||
red,
|
||||
red code {
|
||||
color: var(--color-danger-fg) !important;
|
||||
}
|
||||
pur {
|
||||
color: var(--color-prettylights-syntax-entity);
|
||||
pur,
|
||||
pur code {
|
||||
color: var(--color-prettylights-syntax-entity) !important;
|
||||
}
|
||||
|
||||
:is(.h3wrap-body, .wrap-body) p > code,
|
||||
|
||||
@ -107,7 +107,7 @@ export function getTocsTree(arr = [], result = []) {
|
||||
{
|
||||
type: 'element',
|
||||
tagName: 'div',
|
||||
properties: { class: 'wrap-body' },
|
||||
properties: { class: ['wrap-body'] },
|
||||
children: [...header],
|
||||
},
|
||||
],
|
||||
@ -133,7 +133,12 @@ export function getTocsTree(arr = [], result = []) {
|
||||
children: [...resultChilds],
|
||||
});
|
||||
} else {
|
||||
panle.children[0].children[1].properties?.class.push(bodyClass);
|
||||
panle.children[0].children[1].children = panle.children[0].children[1].children.concat(resultChilds);
|
||||
if (panle.children[0].children[1].properties && bodyStyle) {
|
||||
const initStyle = panle.children[0].children[1].properties?.style || '';
|
||||
panle.children[0].children[1].properties.style = initStyle + bodyStyle;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user