mirror of
https://github.com/jaywcjlove/reference.git
synced 2025-06-18 13:11:20 +08:00
feat: add docs/scala.md (#326) 5c4075497e
This commit is contained in:
jaywcjlove
273
docs/scala.html
Normal file
273
docs/scala.html
Normal file
@ -0,0 +1,273 @@
|
||||
<!doctype html>
|
||||
<html lang="en" data-color-mode="dark">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<title>Scala
|
||||
& scala cheatsheet & Quick Reference</title>
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<meta description="本速查表可以用于快速地查找 Scala 语法结构
|
||||
|
||||
|
||||
入门，为开发人员分享快速参考备忘单。">
|
||||
<meta keywords="scala,reference,Quick,Reference,cheatsheet,cheat,sheet">
|
||||
<link rel="icon" href="data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20height%3D%221em%22%20width%3D%221em%22%3E%20%3Cpath%20d%3D%22m21.66%2010.44-.98%204.18c-.84%203.61-2.5%205.07-5.62%204.77-.5-.04-1.04-.13-1.62-.27l-1.68-.4c-4.17-.99-5.46-3.05-4.48-7.23l.98-4.19c.2-.85.44-1.59.74-2.2%201.17-2.42%203.16-3.07%206.5-2.28l1.67.39c4.19.98%205.47%203.05%204.49%207.23Z%22%20fill%3D%22%23c9d1d9%22%2F%3E%20%3Cpath%20d%3D%22M15.06%2019.39c-.62.42-1.4.77-2.35%201.08l-1.58.52c-3.97%201.28-6.06.21-7.35-3.76L2.5%2013.28c-1.28-3.97-.22-6.07%203.75-7.35l1.58-.52c.41-.13.8-.24%201.17-.31-.3.61-.54%201.35-.74%202.2l-.98%204.19c-.98%204.18.31%206.24%204.48%207.23l1.68.4c.58.14%201.12.23%201.62.27Zm2.43-8.88c-.06%200-.12-.01-.19-.02l-4.85-1.23a.75.75%200%200%201%20.37-1.45l4.85%201.23a.748.748%200%200%201-.18%201.47Z%22%20fill%3D%22%23228e6c%22%20%2F%3E%20%3Cpath%20d%3D%22M14.56%2013.89c-.06%200-.12-.01-.19-.02l-2.91-.74a.75.75%200%200%201%20.37-1.45l2.91.74c.4.1.64.51.54.91-.08.34-.38.56-.72.56Z%22%20fill%3D%22%23228e6c%22%20%2F%3E%20%3C%2Fsvg%3E" type="image/svg+xml">
|
||||
<link rel="stylesheet" href="../style/style.css">
|
||||
<link rel="stylesheet" href="../style/katex.css">
|
||||
</head>
|
||||
<body><nav class="header-nav"><div class="max-container"><a href="../index.html" class="logo"><svg viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg" height="1em" width="1em">
|
||||
<path d="m21.66 10.44-.98 4.18c-.84 3.61-2.5 5.07-5.62 4.77-.5-.04-1.04-.13-1.62-.27l-1.68-.4c-4.17-.99-5.46-3.05-4.48-7.23l.98-4.19c.2-.85.44-1.59.74-2.2 1.17-2.42 3.16-3.07 6.5-2.28l1.67.39c4.19.98 5.47 3.05 4.49 7.23Z" fill="#c9d1d9"></path>
|
||||
<path d="M15.06 19.39c-.62.42-1.4.77-2.35 1.08l-1.58.52c-3.97 1.28-6.06.21-7.35-3.76L2.5 13.28c-1.28-3.97-.22-6.07 3.75-7.35l1.58-.52c.41-.13.8-.24 1.17-.31-.3.61-.54 1.35-.74 2.2l-.98 4.19c-.98 4.18.31 6.24 4.48 7.23l1.68.4c.58.14 1.12.23 1.62.27Zm2.43-8.88c-.06 0-.12-.01-.19-.02l-4.85-1.23a.75.75 0 0 1 .37-1.45l4.85 1.23a.748.748 0 0 1-.18 1.47Z" fill="#228e6c"></path>
|
||||
<path d="M14.56 13.89c-.06 0-.12-.01-.19-.02l-2.91-.74a.75.75 0 0 1 .37-1.45l2.91.74c.4.1.64.51.54.91-.08.34-.38.56-.72.56Z" fill="#228e6c"></path>
|
||||
</svg>
|
||||
<span class="title">Quick Reference</span></a><div class="menu"><a href="javascript:void(0);" class="searchbtn" id="searchbtn"><svg xmlns="http://www.w3.org/2000/svg" height="1em" width="1em" viewBox="0 0 18 18">
|
||||
<path fill="currentColor" d="M17.71,16.29 L14.31,12.9 C15.4069846,11.5024547 16.0022094,9.77665502 16,8 C16,3.581722 12.418278,0 8,0 C3.581722,0 0,3.581722 0,8 C0,12.418278 3.581722,16 8,16 C9.77665502,16.0022094 11.5024547,15.4069846 12.9,14.31 L16.29,17.71 C16.4777666,17.8993127 16.7333625,18.0057983 17,18.0057983 C17.2666375,18.0057983 17.5222334,17.8993127 17.71,17.71 C17.8993127,17.5222334 18.0057983,17.2666375 18.0057983,17 C18.0057983,16.7333625 17.8993127,16.4777666 17.71,16.29 Z M2,8 C2,4.6862915 4.6862915,2 8,2 C11.3137085,2 14,4.6862915 14,8 C14,11.3137085 11.3137085,14 8,14 C4.6862915,14 2,11.3137085 2,8 Z"></path>
|
||||
</svg><span>搜索</span><span>⌘K</span></a><a href="https://github.com/jaywcjlove/reference/blob/main/docs/scala.md" class="" target="__blank"><svg viewBox="0 0 36 36" fill="currentColor" height="1em" width="1em"><path d="m33 6.4-3.7-3.7a1.71 1.71 0 0 0-2.36 0L23.65 6H6a2 2 0 0 0-2 2v22a2 2 0 0 0 2 2h22a2 2 0 0 0 2-2V11.76l3-3a1.67 1.67 0 0 0 0-2.36ZM18.83 20.13l-4.19.93 1-4.15 9.55-9.57 3.23 3.23ZM29.5 9.43 26.27 6.2l1.85-1.85 3.23 3.23Z"></path><path fill="none" d="M0 0h36v36H0z"></path></svg><span>编辑</span></a><button id="darkMode" type="button"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="light" height="1em" width="1em">
|
||||
<path d="M6.995 12c0 2.761 2.246 5.007 5.007 5.007s5.007-2.246 5.007-5.007-2.246-5.007-5.007-5.007S6.995 9.239 6.995 12zM11 19h2v3h-2zm0-17h2v3h-2zm-9 9h3v2H2zm17 0h3v2h-3zM5.637 19.778l-1.414-1.414 2.121-2.121 1.414 1.414zM16.242 6.344l2.122-2.122 1.414 1.414-2.122 2.122zM6.344 7.759 4.223 5.637l1.415-1.414 2.12 2.122zm13.434 10.605-1.414 1.414-2.122-2.122 1.414-1.414z"></path>
|
||||
</svg>
|
||||
<svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 24 24" class="dark" height="1em" width="1em">
|
||||
<path d="M12 11.807A9.002 9.002 0 0 1 10.049 2a9.942 9.942 0 0 0-5.12 2.735c-3.905 3.905-3.905 10.237 0 14.142 3.906 3.906 10.237 3.905 14.143 0a9.946 9.946 0 0 0 2.735-5.119A9.003 9.003 0 0 1 12 11.807z"></path>
|
||||
</svg>
|
||||
</button><script src="../js/dark.js?v=1.3.3"></script><a href="https://github.com/jaywcjlove/reference" class="" target="__blank"><svg viewBox="0 0 16 16" fill="currentColor" height="1em" width="1em"><path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.012 8.012 0 0 0 16 8c0-4.42-3.58-8-8-8z"></path></svg></a></div></div></nav><div class="wrap h1body-exist max-container"><header class="wrap-header h1wrap"><h1 id="scala"><svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 32 32" height="1em" width="1em">
|
||||
<path d="M6.12 32c6.047 0 18.411-2.021 19.76-4v-7.641c-1.276 1.88-13.714 3.885-19.76 3.885zm0-10.182c6.047 0 18.411-2.021 19.76-4v-7.635c-1.276 1.875-13.714 3.88-19.76 3.88zm0-10.177c6.047 0 18.411-2.021 19.76-4V0C24.604 1.875 12.166 3.88 6.12 3.88z"></path>
|
||||
</svg><a aria-hidden="true" tabindex="-1" href="#scala"><span class="icon icon-link"></span></a>Scala</h1><div class="wrap-body">
|
||||
<p><a href="https://github.com/scala/scala/network/dependents"><img src="https://badgen.net/github/dependents-repo/scala/scala" alt="Repo Dependents"></a>
|
||||
<a href="https://github.com/scala/scala"><img src="https://badgen.net/badge/icon/Github?icon=github&label" alt="Github repo"></a></p>
|
||||
<p style="padding-top: 12px;">本速查表可以用于快速地查找 <a href="https://github.com/scala/scala">Scala</a> 语法结构</p>
|
||||
<!--rehype:style=padding-top: 12px;-->
|
||||
</div></header><div class="menu-tocs"><div class="menu-btn"><svg aria-hidden="true" fill="currentColor" height="1em" width="1em" viewBox="0 0 16 16" version="1.1" data-view-component="true">
|
||||
<path fill-rule="evenodd" d="M2 4a1 1 0 100-2 1 1 0 000 2zm3.75-1.5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zm0 5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zm0 5a.75.75 0 000 1.5h8.5a.75.75 0 000-1.5h-8.5zM3 8a1 1 0 11-2 0 1 1 0 012 0zm-1 6a1 1 0 100-2 1 1 0 000 2z"></path>
|
||||
</svg></div><div class="menu-modal"><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#入门">入门</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#介绍">介绍</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#函数">函数</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#变量">变量</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#包">包</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#数据结构">数据结构</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#控制结构">控制结构</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件">条件</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#条件语法糖">条件（语法糖）</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#while-循环">while 循环</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#do-while-循环">do while 循环</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#break-slides">break. (slides)</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#for-表达式-filtermap">for 表达式: filter/map</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#for-表达式-解构绑定">for 表达式: 解构绑定</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#for-表达式-叉乘">for 表达式: 叉乘</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#for-表达式-不可避免的格式">for 表达式: 不可避免的格式</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#for-表达式-包括上边界的遍历">for 表达式: 包括上边界的遍历</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#for-表达式-忽略上边界的遍历">for 表达式: 忽略上边界的遍历</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#模式匹配">模式匹配</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#在函数的参数中使用模式匹配">在函数的参数中使用模式匹配</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#可以匹配任何int类型值的名称">可以匹配任何Int类型值的名称</a><a aria-hidden="true" class="leve2 tocs-link" data-num="2" href="#面向对象">面向对象</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#构造器参数---私有">构造器参数 - 私有</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#构造器参数---公有">构造器参数 - 公有</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#构造函数就是类的主体">构造函数就是类的主体</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#匿名类">匿名类</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#定义一个抽象类">定义一个抽象类</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#定义一个继承子类">定义一个继承子类</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#继承与构造器参数">继承与构造器参数</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#定义一个单例">定义一个单例</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#特质">特质</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#多个特质">多个特质</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#必须声明覆盖该方法">必须声明覆盖该方法</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#创建对象">创建对象</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#类字面量">类字面量</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#类型检查-运行时">类型检查 (运行时)</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#类型强制转换-运行时">类型强制转换 (运行时)</a><a aria-hidden="true" class="leve3 tocs-link" data-num="3" href="#归属-编译时">归属 (编译时)</a></div></div><div class="h1wrap-body"><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="入门"><a aria-hidden="true" tabindex="-1" href="#入门"><span class="icon icon-link"></span></a>入门</h2><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="介绍"><a aria-hidden="true" tabindex="-1" href="#介绍"><span class="icon icon-link"></span></a>介绍</h3><div class="wrap-body">
|
||||
<ul>
|
||||
<li><a href="https://github.com/scala/scala">Scala</a> 官网 <em>(github.com)</em></li>
|
||||
</ul>
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2 row-span-4"><div class="wrap-header h3wrap"><h3 id="函数"><a aria-hidden="true" tabindex="-1" href="#函数"><span class="icon icon-link"></span></a>函数</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2 row-span-4-->
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">def</span> f<span class="token punctuation">(</span>x<span class="token operator">:</span> <span class="token builtin">Int</span><span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token punctuation">{</span> x<span class="token operator">*</span>x <span class="token punctuation">}</span> <span class="token comment">// ✅ GOOD</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> f<span class="token punctuation">(</span>x<span class="token operator">:</span> <span class="token builtin">Int</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> x<span class="token operator">*</span>x <span class="token punctuation">}</span> <span class="token comment">// ❌ BAD 定义函数,潜在风险: </span>
|
||||
</span><span class="code-line"><span class="token comment">// 不加“=”号将会是一段返回Unit类型的过程，</span>
|
||||
</span><span class="code-line"><span class="token comment">// 这将会导致意想不到的错误。</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token keyword">def</span> f<span class="token punctuation">(</span>x<span class="token operator">:</span> <span class="token builtin">Any</span><span class="token punctuation">)</span> <span class="token operator">=</span> println<span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">// ✅ GOOD</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> f<span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token operator">=</span> println<span class="token punctuation">(</span>x<span class="token punctuation">)</span> <span class="token comment">// ❌ BAD 定义函数 语法错误: 每个参数都需要指定类型。</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token keyword">type</span> R <span class="token operator">=</span> <span class="token builtin">Double</span> <span class="token comment">// 类型别名</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> f<span class="token punctuation">(</span>x<span class="token operator">:</span> R<span class="token punctuation">)</span> vs<span class="token punctuation">.</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> f<span class="token punctuation">(</span>x<span class="token operator">:</span> <span class="token keyword">=></span> R<span class="token punctuation">)</span> <span class="token comment">// 传值调用 传名调用 （惰性参数）</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span>x<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token keyword">=></span> x<span class="token operator">*</span>x <span class="token comment">// 匿名函数</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">.</span>map<span class="token punctuation">(</span>_<span class="token operator">*</span><span class="token number">2</span><span class="token punctuation">)</span> vs<span class="token punctuation">.</span> <span class="token comment">// 匿名函数: 下划线是参数的占位符</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">.</span>reduceLeft<span class="token punctuation">(</span> _<span class="token operator">+</span>_ <span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">.</span>map<span class="token punctuation">(</span> x <span class="token keyword">=></span> x<span class="token operator">*</span>x <span class="token punctuation">)</span> <span class="token comment">// 匿名函数: 必须命名以后才可以多次使用同一个参数</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">.</span>map<span class="token punctuation">(</span><span class="token number">2</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token comment">// ✅ GOOD</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">.</span>map<span class="token punctuation">(</span><span class="token operator">*</span><span class="token number">2</span><span class="token punctuation">)</span> <span class="token comment">// ❌ BAD 匿名函数: 绑定中缀方法，明智的做法是2*_。</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span><span class="token punctuation">.</span>map <span class="token punctuation">{</span> x <span class="token keyword">=></span> <span class="token keyword">val</span> y<span class="token operator">=</span>x<span class="token operator">*</span><span class="token number">2</span><span class="token punctuation">;</span> println<span class="token punctuation">(</span>y<span class="token punctuation">)</span><span class="token punctuation">;</span> y <span class="token punctuation">}</span> <span class="token comment">// 匿名函数: 代码块风格，最后一个表达式作为返回值</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span> filter <span class="token punctuation">{</span>_<span class="token operator">%</span><span class="token number">2</span> <span class="token operator">==</span> <span class="token number">0</span><span class="token punctuation">}</span> map <span class="token punctuation">{</span>_<span class="token operator">*</span><span class="token number">2</span><span class="token punctuation">}</span> <span class="token comment">// 匿名函数: 管道风格（或者用圆括号）</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token comment">// 匿名函数: 要传入多个代码块的话，需要使用花括号。</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> compose<span class="token punctuation">(</span>g<span class="token operator">:</span>R<span class="token keyword">=></span>R<span class="token punctuation">,</span> h<span class="token operator">:</span>R<span class="token keyword">=></span>R<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token keyword">=></span> g<span class="token punctuation">(</span>h<span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">val</span> f <span class="token operator">=</span> compose<span class="token punctuation">(</span><span class="token punctuation">{</span>_<span class="token operator">*</span><span class="token number">2</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>_<span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token keyword">val</span> zscore <span class="token operator">=</span> <span class="token punctuation">(</span>mean<span class="token operator">:</span>R<span class="token punctuation">,</span> sd<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token keyword">=></span> <span class="token punctuation">(</span>x<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token keyword">=></span> <span class="token punctuation">(</span>x<span class="token operator">-</span>mean<span class="token punctuation">)</span><span class="token operator">/</span>sd <span class="token comment">// 柯里化, 显然的语法。</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> zscore<span class="token punctuation">(</span>mean<span class="token operator">:</span>R<span class="token punctuation">,</span> sd<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token keyword">=></span> <span class="token punctuation">(</span>x<span class="token operator">-</span>mean<span class="token punctuation">)</span><span class="token operator">/</span>sd <span class="token comment">// 柯里化, 显然的语法。</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> zscore<span class="token punctuation">(</span>mean<span class="token operator">:</span>R<span class="token punctuation">,</span> sd<span class="token operator">:</span>R<span class="token punctuation">)</span><span class="token punctuation">(</span>x<span class="token operator">:</span>R<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token punctuation">(</span>x<span class="token operator">-</span>mean<span class="token punctuation">)</span><span class="token operator">/</span>sd <span class="token comment">// 柯里化，语法糖。然后:)</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token keyword">val</span> normer <span class="token operator">=</span> zscore<span class="token punctuation">(</span><span class="token number">7</span><span class="token punctuation">,</span> <span class="token number">0.4</span><span class="token punctuation">)</span> _ <span class="token comment">// 需要在尾部加下划线来变成偏函数（只对语法糖版本适用）</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> mapmake<span class="token punctuation">[</span>T<span class="token punctuation">]</span><span class="token punctuation">(</span>g<span class="token operator">:</span>T<span class="token keyword">=></span>T<span class="token punctuation">)</span><span class="token punctuation">(</span>seq<span class="token operator">:</span> List<span class="token punctuation">[</span>T<span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token operator">=</span> seq<span class="token punctuation">.</span>map<span class="token punctuation">(</span>g<span class="token punctuation">)</span> <span class="token comment">// 泛型</span>
|
||||
</span><span class="code-line">
|
||||
</span><span class="code-line"><span class="token number">5.</span><span class="token operator">+</span><span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token number">5</span> <span class="token operator">+</span> <span class="token number">3</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span> map <span class="token punctuation">(</span>_<span class="token operator">*</span><span class="token number">2</span><span class="token punctuation">)</span> <span class="token comment">// 中缀语法糖</span>
|
||||
</span><span class="code-line"><span class="token keyword">def</span> sum<span class="token punctuation">(</span>args<span class="token operator">:</span> <span class="token builtin">Int</span><span class="token operator">*</span><span class="token punctuation">)</span> <span class="token operator">=</span> args<span class="token punctuation">.</span>reduceLeft<span class="token punctuation">(</span>_<span class="token operator">+</span>_<span class="token punctuation">)</span> <span class="token comment">// 变长参数</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="变量"><a aria-hidden="true" tabindex="-1" href="#变量"><span class="icon icon-link"></span></a>变量</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">var</span> x <span class="token operator">=</span> <span class="token number">5</span> <span class="token comment">// 可变变量 </span>
|
||||
</span><span class="code-line"><span class="token keyword">val</span> x <span class="token operator">=</span> <span class="token number">5</span> <span class="token comment">// ✅ GOOD</span>
|
||||
</span><span class="code-line">x<span class="token operator">=</span><span class="token number">6</span> <span class="token comment">// ❌ BAD 常量</span>
|
||||
</span><span class="code-line"><span class="token keyword">var</span> x<span class="token operator">:</span> <span class="token builtin">Double</span> <span class="token operator">=</span> <span class="token number">5</span> <span class="token comment">// 显式类型</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="包"><a aria-hidden="true" tabindex="-1" href="#包"><span class="icon icon-link"></span></a>包</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span></span>_ <span class="token comment">// 通配符导入</span>
|
||||
</span><span class="code-line"><span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span></span>Vector
|
||||
</span><span class="code-line"><span class="token comment">// 选择性导入</span>
|
||||
</span><span class="code-line"><span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span></span><span class="token punctuation">{</span>Vector<span class="token punctuation">,</span> Sequence<span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token comment">// 重命名导入</span>
|
||||
</span><span class="code-line"><span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>collection<span class="token punctuation">.</span></span><span class="token punctuation">{</span>Vector <span class="token keyword">=></span> Vec28<span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token comment">// 导入java.util包里除Date之外的一切</span>
|
||||
</span><span class="code-line"><span class="token keyword">import</span> <span class="token namespace">java<span class="token punctuation">.</span>util<span class="token punctuation">.</span></span><span class="token punctuation">{</span>Date <span class="token keyword">=></span> _<span class="token punctuation">,</span> _<span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token comment">// 文件开头的包名 pkg</span>
|
||||
</span><span class="code-line"><span class="token keyword">package</span> <span class="token namespace">pkg</span> <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span> <span class="token comment">// 声明这是一个包</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="数据结构"><a aria-hidden="true" tabindex="-1" href="#数据结构"><span class="icon icon-link"></span></a>数据结构</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token comment">// 元组字面量 (Tuple3)</span>
|
||||
</span><span class="code-line"><span class="token comment">// 解构绑定：通过模式匹配来解构元组。</span>
|
||||
</span><span class="code-line"><span class="token keyword">var</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">,</span>z<span class="token punctuation">)</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token comment">// ❌ BAD 潜在风险：整个元组被赋值给了每一个变量</span>
|
||||
</span><span class="code-line"><span class="token keyword">var</span> x<span class="token punctuation">,</span>y<span class="token punctuation">,</span>z <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token comment">// 列表 (不可变)</span>
|
||||
</span><span class="code-line"><span class="token keyword">var</span> xs <span class="token operator">=</span> List<span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line">xs<span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">)</span> <span class="token comment">// 用括号索引 (slides)</span>
|
||||
</span><span class="code-line"><span class="token number">1</span> <span class="token operator">::</span> List<span class="token punctuation">(</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token comment">// Cons（构成）</span>
|
||||
</span><span class="code-line"><span class="token number">1</span> to <span class="token number">5</span> <span class="token comment">/* 等价于 => */</span> <span class="token number">1</span> until <span class="token number">6</span>
|
||||
</span><span class="code-line"><span class="token comment">// Range类型（语法糖）</span>
|
||||
</span><span class="code-line"><span class="token number">1</span> to <span class="token number">10</span> by <span class="token number">2</span>
|
||||
</span><span class="code-line"><span class="token comment">// Unit类型的唯一成员 (相当于 C/Java 里的void)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">(</span>空括号<span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
</div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="控制结构"><a aria-hidden="true" tabindex="-1" href="#控制结构"><span class="icon icon-link"></span></a>控制结构</h2><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="条件"><a aria-hidden="true" tabindex="-1" href="#条件"><span class="icon icon-link"></span></a>条件</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">if</span> <span class="token punctuation">(</span>check<span class="token punctuation">)</span> happy <span class="token keyword">else</span> sad
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="条件语法糖"><a aria-hidden="true" tabindex="-1" href="#条件语法糖"><span class="icon icon-link"></span></a>条件（语法糖）</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">if</span> <span class="token punctuation">(</span>check<span class="token punctuation">)</span> happy same as
|
||||
</span><span class="code-line"><span class="token keyword">if</span> <span class="token punctuation">(</span>check<span class="token punctuation">)</span> happy <span class="token keyword">else</span> <span class="token punctuation">(</span><span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="while-循环"><a aria-hidden="true" tabindex="-1" href="#while-循环"><span class="icon icon-link"></span></a>while 循环</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">while</span> <span class="token punctuation">(</span>x <span class="token operator"><</span> <span class="token number">5</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> println<span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">;</span> x <span class="token operator">+=</span> <span class="token number">1</span><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="do-while-循环"><a aria-hidden="true" tabindex="-1" href="#do-while-循环"><span class="icon icon-link"></span></a>do while 循环</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">do</span> <span class="token punctuation">{</span> println<span class="token punctuation">(</span>x<span class="token punctuation">)</span><span class="token punctuation">;</span> x <span class="token operator">+=</span> <span class="token number">1</span><span class="token punctuation">}</span> <span class="token keyword">while</span> <span class="token punctuation">(</span>x <span class="token operator"><</span> <span class="token number">5</span><span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="break-slides"><a aria-hidden="true" tabindex="-1" href="#break-slides"><span class="icon icon-link"></span></a>break. (slides)</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">import</span> <span class="token namespace">scala<span class="token punctuation">.</span>util<span class="token punctuation">.</span>control<span class="token punctuation">.</span></span>Breaks<span class="token punctuation">.</span>_
|
||||
</span><span class="code-line">breakable <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> <span class="token keyword">for</span> <span class="token punctuation">(</span>x <span class="token keyword"><-</span> xs<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> <span class="token keyword">if</span> <span class="token punctuation">(</span>Math<span class="token punctuation">.</span>random <span class="token operator"><</span> <span class="token number">0.1</span><span class="token punctuation">)</span> break
|
||||
</span><span class="code-line"> <span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="for-表达式-filtermap"><a aria-hidden="true" tabindex="-1" href="#for-表达式-filtermap"><span class="icon icon-link"></span></a>for 表达式: filter/map</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span>x <span class="token keyword"><-</span> xs <span class="token keyword">if</span> x<span class="token operator">%</span><span class="token number">2</span> <span class="token operator">==</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token keyword">yield</span> x<span class="token operator">*</span><span class="token number">10</span>
|
||||
</span><span class="code-line"><span class="token comment">// 等价于</span>
|
||||
</span><span class="code-line">xs<span class="token punctuation">.</span>filter<span class="token punctuation">(</span>_<span class="token operator">%</span><span class="token number">2</span> <span class="token operator">==</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">.</span>map<span class="token punctuation">(</span>_<span class="token operator">*</span><span class="token number">10</span><span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="for-表达式-解构绑定"><a aria-hidden="true" tabindex="-1" href="#for-表达式-解构绑定"><span class="icon icon-link"></span></a>for 表达式: 解构绑定</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">)</span> <span class="token keyword"><-</span> xs zip ys<span class="token punctuation">)</span> <span class="token keyword">yield</span> x<span class="token operator">*</span>y
|
||||
</span><span class="code-line"><span class="token comment">// 等价于</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span>xs zip ys<span class="token punctuation">)</span> map <span class="token punctuation">{</span> <span class="token keyword">case</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">)</span> <span class="token keyword">=></span> x<span class="token operator">*</span>y <span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="for-表达式-叉乘"><a aria-hidden="true" tabindex="-1" href="#for-表达式-叉乘"><span class="icon icon-link"></span></a>for 表达式: 叉乘</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span>x <span class="token keyword"><-</span> xs<span class="token punctuation">;</span> y <span class="token keyword"><-</span> ys<span class="token punctuation">)</span> <span class="token keyword">yield</span> x<span class="token operator">*</span>y
|
||||
</span><span class="code-line"><span class="token comment">// 等价于</span>
|
||||
</span><span class="code-line">xs flatMap <span class="token punctuation">{</span>x <span class="token keyword">=></span> ys map <span class="token punctuation">{</span>y <span class="token keyword">=></span> x<span class="token operator">*</span>y<span class="token punctuation">}</span><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="for-表达式-不可避免的格式"><a aria-hidden="true" tabindex="-1" href="#for-表达式-不可避免的格式"><span class="icon icon-link"></span></a>for 表达式: 不可避免的格式</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span>x <span class="token keyword"><-</span> xs<span class="token punctuation">;</span> y <span class="token keyword"><-</span> ys<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> println<span class="token punctuation">(</span><span class="token string">"%d/%d = %.1f"</span><span class="token punctuation">.</span>format<span class="token punctuation">(</span>x<span class="token punctuation">,</span> y<span class="token punctuation">,</span> x<span class="token operator">/</span>y<span class="token punctuation">.</span>toFloat<span class="token punctuation">)</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="for-表达式-包括上边界的遍历"><a aria-hidden="true" tabindex="-1" href="#for-表达式-包括上边界的遍历"><span class="icon icon-link"></span></a>for 表达式: 包括上边界的遍历</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span>i <span class="token keyword"><-</span> <span class="token number">1</span> to <span class="token number">5</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> println<span class="token punctuation">(</span>i<span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="for-表达式-忽略上边界的遍历"><a aria-hidden="true" tabindex="-1" href="#for-表达式-忽略上边界的遍历"><span class="icon icon-link"></span></a>for 表达式: 忽略上边界的遍历</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">for</span> <span class="token punctuation">(</span>i <span class="token keyword"><-</span> <span class="token number">1</span> until <span class="token number">5</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> println<span class="token punctuation">(</span>i<span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="模式匹配"><a aria-hidden="true" tabindex="-1" href="#模式匹配"><span class="icon icon-link"></span></a>模式匹配</h2><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="在函数的参数中使用模式匹配"><a aria-hidden="true" tabindex="-1" href="#在函数的参数中使用模式匹配"><span class="icon icon-link"></span></a>在函数的参数中使用模式匹配</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token comment">// ✅ GOOD</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span>xs zip ys<span class="token punctuation">)</span> map <span class="token punctuation">{</span> <span class="token keyword">case</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">)</span> <span class="token keyword">=></span> x<span class="token operator">*</span>y <span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token comment">// ❌ BAD</span>
|
||||
</span><span class="code-line"><span class="token punctuation">(</span>xs zip ys<span class="token punctuation">)</span> map<span class="token punctuation">(</span> <span class="token punctuation">(</span>x<span class="token punctuation">,</span>y<span class="token punctuation">)</span> <span class="token keyword">=></span> x<span class="token operator">*</span>y <span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist col-span-2"><div class="wrap-header h3wrap"><h3 id="可以匹配任何int类型值的名称"><a aria-hidden="true" tabindex="-1" href="#可以匹配任何int类型值的名称"><span class="icon icon-link"></span></a>可以匹配任何Int类型值的名称</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=col-span-2-->
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">val</span> v42 <span class="token operator">=</span> <span class="token number">42</span>
|
||||
</span><span class="code-line">Some<span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">match</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> <span class="token keyword">case</span> Some<span class="token punctuation">(</span>v42<span class="token punctuation">)</span> <span class="token keyword">=></span> println<span class="token punctuation">(</span><span class="token string">"42"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"> <span class="token keyword">case</span> _ <span class="token keyword">=></span> println<span class="token punctuation">(</span><span class="token string">"Not 42"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>❌ BAD: “v42” 被解释为可以匹配任何Int类型值的名称，打印输出”42”</p>
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">val</span> v42 <span class="token operator">=</span> <span class="token number">42</span>
|
||||
</span><span class="code-line">Some<span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">match</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> <span class="token keyword">case</span> Some<span class="token punctuation">(</span>`v42`<span class="token punctuation">)</span> <span class="token keyword">=></span> println<span class="token punctuation">(</span><span class="token string">"42"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"> <span class="token keyword">case</span> _ <span class="token keyword">=></span> println<span class="token punctuation">(</span><span class="token string">"Not 42"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>✅ GOOD: 有反引号的 “<code>v42</code>” 被解释为已经存在的 <code>val v42</code>，所以输出的是 “Not 42”.</p>
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">val</span> UppercaseVal <span class="token operator">=</span> <span class="token number">42</span>
|
||||
</span><span class="code-line">Some<span class="token punctuation">(</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token keyword">match</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"><span class="token keyword">case</span> Some<span class="token punctuation">(</span>UppercaseVal<span class="token punctuation">)</span> <span class="token keyword">=></span> println<span class="token punctuation">(</span><span class="token string">"42"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"> <span class="token keyword">case</span> _ <span class="token keyword">=></span> println<span class="token punctuation">(</span><span class="token string">"Not 42"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>✅ GOOD: UppercaseVal 被视作已经存在的 val，而不是一个新的模式变量，因为它是以大写字母开头的，所以 <code>UppercaseVal</code> 所包含的值（42）和检查的值（3）不匹配，输出”Not 42”</p>
|
||||
</div></div></div></div></div><div class="wrap h2body-exist"><div class="wrap-header h2wrap"><h2 id="面向对象"><a aria-hidden="true" tabindex="-1" href="#面向对象"><span class="icon icon-link"></span></a>面向对象</h2><div class="wrap-body">
|
||||
</div></div><div class="h2wrap-body"><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="构造器参数---私有"><a aria-hidden="true" tabindex="-1" href="#构造器参数---私有"><span class="icon icon-link"></span></a>构造器参数 - 私有</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">class</span> C<span class="token punctuation">(</span>x<span class="token operator">:</span> R<span class="token punctuation">)</span> same as
|
||||
</span><span class="code-line"><span class="token keyword">class</span> C<span class="token punctuation">(</span><span class="token keyword">private</span> <span class="token keyword">val</span> x<span class="token operator">:</span> R<span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">var</span> c <span class="token operator">=</span> <span class="token keyword">new</span> C<span class="token punctuation">(</span><span class="token number">4</span><span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="构造器参数---公有"><a aria-hidden="true" tabindex="-1" href="#构造器参数---公有"><span class="icon icon-link"></span></a>构造器参数 - 公有</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">class</span> C<span class="token punctuation">(</span><span class="token keyword">val</span> x<span class="token operator">:</span> R<span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">var</span> c <span class="token operator">=</span> <span class="token keyword">new</span> C<span class="token punctuation">(</span><span class="token number">4</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line">c<span class="token punctuation">.</span>x
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist row-span-2"><div class="wrap-header h3wrap"><h3 id="构造函数就是类的主体"><a aria-hidden="true" tabindex="-1" href="#构造函数就是类的主体"><span class="icon icon-link"></span></a>构造函数就是类的主体</h3><div class="wrap-body">
|
||||
<!--rehype:wrap-class=row-span-2-->
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">class</span> C<span class="token punctuation">(</span><span class="token keyword">var</span> x<span class="token operator">:</span> R<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
||||
</span><span class="code-line"> assert<span class="token punctuation">(</span>x <span class="token operator">></span> <span class="token number">0</span><span class="token punctuation">,</span> <span class="token string">"positive please"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"> <span class="token keyword">var</span> y <span class="token operator">=</span> x
|
||||
</span><span class="code-line"> <span class="token keyword">val</span> readonly <span class="token operator">=</span> <span class="token number">5</span>
|
||||
</span><span class="code-line"> <span class="token keyword">private</span> <span class="token keyword">var</span> secret <span class="token operator">=</span> <span class="token number">1</span>
|
||||
</span><span class="code-line"> <span class="token keyword">def</span> <span class="token keyword">this</span> <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">(</span><span class="token number">42</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="匿名类"><a aria-hidden="true" tabindex="-1" href="#匿名类"><span class="icon icon-link"></span></a>匿名类</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">new</span><span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="定义一个抽象类"><a aria-hidden="true" tabindex="-1" href="#定义一个抽象类"><span class="icon icon-link"></span></a>定义一个抽象类</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">abstract</span> <span class="token keyword">class</span> D <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span> <span class="token comment">// 不可创建</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="定义一个继承子类"><a aria-hidden="true" tabindex="-1" href="#定义一个继承子类"><span class="icon icon-link"></span></a>定义一个继承子类</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">class</span> C <span class="token keyword">extends</span> D <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="继承与构造器参数"><a aria-hidden="true" tabindex="-1" href="#继承与构造器参数"><span class="icon icon-link"></span></a>继承与构造器参数</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">class</span> D<span class="token punctuation">(</span><span class="token keyword">var</span> x<span class="token operator">:</span> R<span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">class</span> C<span class="token punctuation">(</span>x<span class="token operator">:</span> R<span class="token punctuation">)</span> <span class="token keyword">extends</span> D<span class="token punctuation">(</span>x<span class="token punctuation">)</span>
|
||||
</span></code></pre>
|
||||
<p>愿望清单: 默认自动传参</p>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="定义一个单例"><a aria-hidden="true" tabindex="-1" href="#定义一个单例"><span class="icon icon-link"></span></a>定义一个单例</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">object</span> O <span class="token keyword">extends</span> D <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>和模块一样</p>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="特质"><a aria-hidden="true" tabindex="-1" href="#特质"><span class="icon icon-link"></span></a>特质</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">trait</span> T <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token keyword">class</span> C <span class="token keyword">extends</span> T <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span>
|
||||
</span><span class="code-line"><span class="token keyword">class</span> C <span class="token keyword">extends</span> D <span class="token keyword">with</span> T <span class="token punctuation">{</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> <span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
<p>带有实现的接口，没有构造参数</p>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="多个特质"><a aria-hidden="true" tabindex="-1" href="#多个特质"><span class="icon icon-link"></span></a>多个特质</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">trait</span> T1<span class="token punctuation">;</span> <span class="token keyword">trait</span> T2
|
||||
</span><span class="code-line"><span class="token keyword">class</span> C <span class="token keyword">extends</span> T1 <span class="token keyword">with</span> T2
|
||||
</span><span class="code-line"><span class="token keyword">class</span> C <span class="token keyword">extends</span> D <span class="token keyword">with</span> T1 <span class="token keyword">with</span> T2
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="必须声明覆盖该方法"><a aria-hidden="true" tabindex="-1" href="#必须声明覆盖该方法"><span class="icon icon-link"></span></a>必须声明覆盖该方法</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">class</span> C <span class="token keyword">extends</span> D <span class="token punctuation">{</span> <span class="token keyword">override</span> <span class="token keyword">def</span> f <span class="token operator">=</span> <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">}</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="创建对象"><a aria-hidden="true" tabindex="-1" href="#创建对象"><span class="icon icon-link"></span></a>创建对象</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line"><span class="token keyword">new</span> java<span class="token punctuation">.</span>io<span class="token punctuation">.</span>File<span class="token punctuation">(</span><span class="token string">"f"</span><span class="token punctuation">)</span>
|
||||
</span><span class="code-line"><span class="token keyword">new</span> List<span class="token punctuation">[</span><span class="token builtin">Int</span><span class="token punctuation">]</span> <span class="token comment">// ✅ GOOD</span>
|
||||
</span><span class="code-line">List<span class="token punctuation">(</span><span class="token number">1</span><span class="token punctuation">,</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">3</span><span class="token punctuation">)</span> <span class="token comment">// ❌ BAD</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="类字面量"><a aria-hidden="true" tabindex="-1" href="#类字面量"><span class="icon icon-link"></span></a>类字面量</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line">classOf<span class="token punctuation">[</span><span class="token builtin">String</span><span class="token punctuation">]</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="类型检查-运行时"><a aria-hidden="true" tabindex="-1" href="#类型检查-运行时"><span class="icon icon-link"></span></a>类型检查 (运行时)</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line">x<span class="token punctuation">.</span>isInstanceOf<span class="token punctuation">[</span><span class="token builtin">String</span><span class="token punctuation">]</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="类型强制转换-运行时"><a aria-hidden="true" tabindex="-1" href="#类型强制转换-运行时"><span class="icon icon-link"></span></a>类型强制转换 (运行时)</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line">x<span class="token punctuation">.</span>asInstanceOf<span class="token punctuation">[</span><span class="token builtin">String</span><span class="token punctuation">]</span>
|
||||
</span></code></pre>
|
||||
</div></div></div><div class="wrap h3body-not-exist"><div class="wrap-header h3wrap"><h3 id="归属-编译时"><a aria-hidden="true" tabindex="-1" href="#归属-编译时"><span class="icon icon-link"></span></a>归属 (编译时)</h3><div class="wrap-body">
|
||||
<pre class="language-scala"><code class="language-scala code-highlight"><span class="code-line">x<span class="token operator">:</span> <span class="token builtin">String</span>
|
||||
</span></code></pre>
|
||||
</div></div></div></div></div></div></div><footer class="footer-wrap"><footer class="max-container">© 2022 Kenny Wang.</footer></footer><script src="../data.js?v=1.3.3" defer></script><script src="../js/fuse.min.js?v=1.3.3" defer></script><script src="../js/main.js?v=1.3.3" defer></script><div id="mysearch"><div class="mysearch-box"><div class="mysearch-input"><div><svg xmlns="http://www.w3.org/2000/svg" height="1em" width="1em" viewBox="0 0 18 18">
|
||||
<path fill="currentColor" d="M17.71,16.29 L14.31,12.9 C15.4069846,11.5024547 16.0022094,9.77665502 16,8 C16,3.581722 12.418278,0 8,0 C3.581722,0 0,3.581722 0,8 C0,12.418278 3.581722,16 8,16 C9.77665502,16.0022094 11.5024547,15.4069846 12.9,14.31 L16.29,17.71 C16.4777666,17.8993127 16.7333625,18.0057983 17,18.0057983 C17.2666375,18.0057983 17.5222334,17.8993127 17.71,17.71 C17.8993127,17.5222334 18.0057983,17.2666375 18.0057983,17 C18.0057983,16.7333625 17.8993127,16.4777666 17.71,16.29 Z M2,8 C2,4.6862915 4.6862915,2 8,2 C11.3137085,2 14,4.6862915 14,8 C14,11.3137085 11.3137085,14 8,14 C4.6862915,14 2,11.3137085 2,8 Z"></path>
|
||||
</svg><input id="mysearch-input" type="search" placeholder="搜索" autocomplete="off"><div class="mysearch-clear"></div></div><button id="mysearch-close" type="button">搜索</button></div><div class="mysearch-result"><div id="mysearch-menu"></div><div id="mysearch-content"></div></div></div></div></body>
|
||||
</html>
|
||||
@ -215,6 +215,9 @@
|
||||
<path d="M15 3.77a.951.951 0 1 1 1.902 0 .951.951 0 0 1-1.902 0M3.654 12.38a.951.951 0 1 1 1.902 0 .951.951 0 0 1-1.902 0m22.692.044a.951.951 0 0 1 1.902 0 .951.951 0 0 1-1.902 0M6.406 13.73a.87.87 0 0 0 .441-1.146l-.422-.954h1.66v7.48H4.736a11.71 11.71 0 0 1-.379-4.47zm6.942.184v-2.205H17.3c.204 0 1.44.236 1.44 1.16 0 .768-.95 1.044-1.73 1.044zM7.952 25.785a.951.951 0 1 1 1.902 0 .951.951 0 0 1-1.902 0m14.093.044a.951.951 0 0 1 1.902 0 .951.951 0 0 1-1.902 0m.294-2.157a.867.867 0 0 0-1.03.667l-.477 2.228a11.71 11.71 0 0 1-9.765-.047l-.477-2.228a.865.865 0 0 0-1.03-.667l-1.967.422a11.71 11.71 0 0 1-1.017-1.199h9.57c.108 0 .18-.02.18-.118v-3.385c0-.1-.072-.118-.18-.118h-2.8v-2.146h3.027c.276 0 1.477.08 1.862 1.614l.565 2.5c.18.55.913 1.653 1.693 1.653h4.94a11.71 11.71 0 0 1-1.085 1.255zm5.314-8.938a11.71 11.71 0 0 1 .025 2.033h-1.2c-.12 0-.17.08-.17.197v.552c0 1.3-.732 1.58-1.374 1.653-.61.07-1.29-.256-1.372-.63-.36-2.028-.96-2.46-1.9-3.21 1.177-.748 2.402-1.85 2.402-3.327 0-1.594-1.093-2.598-1.838-3.09-1.045-.69-2.202-.827-2.514-.827H7.277a11.71 11.71 0 0 1 6.551-3.697l1.465 1.537c.33.347.88.36 1.226.028l1.64-1.567a11.71 11.71 0 0 1 8.017 5.709l-1.122 2.534a.87.87 0 0 0 .441 1.146zm2.798.04-.038-.392 1.156-1.078c.235-.22.147-.66-.153-.772l-1.477-.552-.116-.38.92-1.28c.188-.26.015-.675-.3-.727l-1.558-.253-.187-.35.655-1.437c.134-.293-.115-.667-.437-.655l-1.58.055-.25-.303.363-1.54c.073-.313-.244-.63-.557-.557l-1.54.363-.304-.25.055-1.58c.012-.32-.362-.57-.654-.437l-1.436.655-.35-.188-.254-1.558c-.05-.316-.467-.488-.727-.3l-1.28.92-.38-.115L19.47.586c-.112-.3-.553-.388-.772-.154L17.62 1.588l-.392-.038-.832-1.345c-.168-.272-.62-.272-.787 0l-.832 1.345-.392.038L13.305.43c-.22-.234-.66-.147-.772.154l-.552 1.477-.38.115-1.28-.92c-.26-.188-.676-.015-.727.3L9.34 3.114l-.35.188-1.436-.655c-.292-.133-.667.117-.654.437l.055 1.58-.304.25-1.54-.363c-.313-.073-.63.244-.557.557l.363 1.54-.25.303-1.58-.055c-.32-.01-.57.362-.437.655l.655 1.437-.188.35-1.558.253c-.316.05-.488.467-.3.727l.92 1.28-.116.38-1.477.552c-.3.112-.388.553-.153.772l1.156 1.078-.038.392-1.345.832c-.272.168-.272.62 0 .787l1.345.832.038.392L.43 18.697c-.234.22-.147.66.153.772l1.477.552.116.38-.92 1.28c-.187.26-.015.676.3.727l1.557.253.188.35-.655 1.436c-.133.292.118.667.437.655l1.58-.055.25.304-.363 1.54c-.073.312.244.63.557.556l1.54-.363.304.25-.055 1.58c-.012.32.362.57.654.437l1.436-.655.35.188.254 1.557c.05.317.467.488.727.302l1.28-.922.38.116.552 1.477c.112.3.553.388.772.153l1.078-1.156.392.04.832 1.345c.168.27.618.272.787 0l.832-1.345.392-.04 1.078 1.156c.22.235.66.147.772-.153l.552-1.477.38-.116 1.28.922c.26.187.676.015.727-.302l.254-1.557.35-.188 1.436.655c.292.133.666-.116.654-.437l-.055-1.58.303-.25 1.54.363c.313.073.63-.244.557-.556l-.363-1.54.25-.304 1.58.055c.32.013.57-.363.437-.655l-.655-1.436.187-.35 1.558-.253c.317-.05.49-.466.3-.727l-.92-1.28.116-.38 1.477-.552c.3-.113.388-.553.153-.772l-1.156-1.078.038-.392 1.345-.832c.272-.168.273-.618 0-.787z"></path>
|
||||
</svg>
|
||||
<span>Rust</span></a><!--rehype:style=background: rgb(71 71 71);--><br>
|
||||
<a href="./docs/scala.html" style="background: rgb(240 81 57/ var(--bg-opacity));"><svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 32 32" height="1em" width="1em">
|
||||
<path d="M6.12 32c6.047 0 18.411-2.021 19.76-4v-7.641c-1.276 1.88-13.714 3.885-19.76 3.885zm0-10.182c6.047 0 18.411-2.021 19.76-4v-7.635c-1.276 1.875-13.714 3.88-19.76 3.88zm0-10.177c6.047 0 18.411-2.021 19.76-4V0C24.604 1.875 12.166 3.88 6.12 3.88z"></path>
|
||||
</svg><span>Scala</span></a><!--rehype:style=background: rgb(240 81 57);--><br>
|
||||
<a href="./docs/swift.html" style="background: rgb(240 81 57/ var(--bg-opacity));"><svg xmlns="http://www.w3.org/2000/svg" fill="currentColor" width="1em" height="1em" viewBox="0 0 150 150">
|
||||
<path d="M149.996652,41.5504118 C149.996652,40.0404009 149.969865,38.5370862 149.929684,37.0237271 C149.889479,33.7232863 149.600703,30.4305622 149.065807,27.1735006 C148.507382,23.9127729 147.466929,20.7532587 145.978615,17.7987099 C142.956518,11.8649909 138.1316,7.04156844 132.19675,4.0211156 C129.242865,2.53082012 126.082821,1.49033249 122.821331,0.934130935 C119.563242,0.396319522 116.269046,0.106431705 112.967097,0.066962791 C111.456985,0.0267851164 109.953569,0.0100444187 108.440109,0 L41.5565427,0 C40.0464306,0 38.5430153,0.0267851164 37.0295549,0.066962791 C36.2092058,0.0903997679 35.3855083,0.117184884 34.5618108,0.157362559 C32.0854761,0.256798914 29.6181641,0.516263128 27.1753203,0.934130935 C24.7417426,1.35877149 22.3608012,2.04348485 20.0734408,2.97649606 C19.3010849,3.30014955 18.5410063,3.64835606 17.7932051,4.0211156 C15.5863952,5.15055914 13.519722,6.53499141 11.6355641,8.14602353 C11.0060717,8.68507399 10.4000179,9.2442133 9.81740256,9.8200933 C7.47219368,12.1591083 5.51152349,14.8541431 4.00799143,17.8054061 C2.51889323,20.7596305 1.47840127,23.9192644 0.920800036,27.1801969 C0.390726031,30.4353902 0.106428217,33.7258611 0.0703156391,37.0237271 C0.0267869101,38.5337381 0.0100450913,40.0370527 0,41.5504118 L0,108.456284 C0,109.966295 0.0267869101,111.46961 0.0703156391,112.979621 C0.110229315,116.280076 0.39900748,119.572822 0.934193491,122.829848 C1.49106583,126.090961 2.53159273,129.250701 4.02138488,132.204638 C7.04518753,138.133686 11.8652306,142.95575 17.7932051,145.982233 C20.747852,147.46998 23.9076759,148.509267 27.1686236,149.065869 C30.4267126,149.60368 33.7209094,149.893568 37.0228582,149.933037 C38.5296219,149.973215 40.0363856,149.989956 41.549846,150 L108.446806,150 C109.956918,150 111.460333,149.973215 112.973793,149.933037 C116.276759,149.891708 119.571929,149.601833 122.831376,149.065869 C126.092204,148.508782 129.251957,147.469519 132.206795,145.982233 C138.136507,142.956565 142.95707,138.132809 145.978615,132.20129 C147.468407,129.247353 148.508934,126.087613 149.065807,122.826499 C149.603754,119.569766 149.893662,116.276895 149.933033,112.976273 C149.973213,111.46961 149.989955,109.962947 150,108.452936 L150,46.9241758 C149.996652,45.1329211 149.996652,43.3416665 149.996652,41.5504118 Z M126.598286,122.240575 C119.901558,109.206268 107.4356,112.440571 101.046922,115.721747 C100.471003,116.056561 99.8816911,116.391375 99.2890308,116.726189 L99.1483995,116.809893 C85.9223626,123.840986 68.1659896,124.356599 50.312514,116.682663 C35.779112,110.381458 23.4900254,99.8344883 15.0575919,86.4255262 C19.1601349,89.4606647 23.5534617,92.08168 28.1731327,94.2501283 C47.0445109,103.089217 66.0096433,102.449722 79.4030984,94.2501283 C60.3174249,79.5685364 44.3792134,60.4339189 32.161034,44.9588179 C29.8334165,42.2434232 27.7304143,39.3433109 25.8728068,36.2871364 C40.5051565,49.6796946 63.6088665,66.4940515 71.9061119,71.1479654 C54.3037636,52.5691391 38.7941426,29.6511239 39.5207375,30.3877146 C67.2418412,58.3178947 92.819992,74.1110689 92.819992,74.1110689 C93.7843207,74.640075 94.4941738,75.0652887 95.0734408,75.4503248 C95.6092689,74.0835027 96.0741937,72.6899392 96.4663601,71.2751948 C100.892897,55.0936363 95.9105317,36.5951653 84.6432876,21.3209527 C110.355373,36.7491797 125.553596,66.075534 119.32564,90.8785518 C119.178312,91.45778 119.007545,92.0169193 118.843475,92.5827548 C131.741372,108.452936 128.232287,125.451441 126.588241,122.243923 L126.598286,122.240575 Z"></path>
|
||||
</svg><span>Swift</span></a><!--rehype:style=background: rgb(240 81 57);--><br>
|
||||
@ -1098,7 +1101,7 @@
|
||||
<!--rehype:class=home-card home-links-->
|
||||
<p>如果你有资源，可以很方便<a href="https://github.com/jaywcjlove/reference/issues/102#issue-1451649637">部署 web 版</a>，这非常简单，只需要克隆 <a href="https://github.com/jaywcjlove/reference/tree/gh-pages">gh-pages</a> 分支代码到你的静态服务就可以了，还可以使用 <a href="https://hub.docker.com/r/wcjiang/reference">docker</a> 快捷部署 web 版。</p>
|
||||
|
||||
</div></div><div class="h2wrap-body"></div></div></div></div><footer class="footer-wrap"><footer class="max-container">© 2022 Kenny Wang. Updated on 2023/03/14 16:33:34</footer></footer><script src="data.js?v=1.3.3" defer></script><script src="js/fuse.min.js?v=1.3.3" defer></script><script src="js/main.js?v=1.3.3" defer></script><div id="mysearch"><div class="mysearch-box"><div class="mysearch-input"><div><svg xmlns="http://www.w3.org/2000/svg" height="1em" width="1em" viewBox="0 0 18 18">
|
||||
</div></div><div class="h2wrap-body"></div></div></div></div><footer class="footer-wrap"><footer class="max-container">© 2022 Kenny Wang. Updated on 2023/03/14 20:04:20</footer></footer><script src="data.js?v=1.3.3" defer></script><script src="js/fuse.min.js?v=1.3.3" defer></script><script src="js/main.js?v=1.3.3" defer></script><div id="mysearch"><div class="mysearch-box"><div class="mysearch-input"><div><svg xmlns="http://www.w3.org/2000/svg" height="1em" width="1em" viewBox="0 0 18 18">
|
||||
<path fill="currentColor" d="M17.71,16.29 L14.31,12.9 C15.4069846,11.5024547 16.0022094,9.77665502 16,8 C16,3.581722 12.418278,0 8,0 C3.581722,0 0,3.581722 0,8 C0,12.418278 3.581722,16 8,16 C9.77665502,16.0022094 11.5024547,15.4069846 12.9,14.31 L16.29,17.71 C16.4777666,17.8993127 16.7333625,18.0057983 17,18.0057983 C17.2666375,18.0057983 17.5222334,17.8993127 17.71,17.71 C17.8993127,17.5222334 18.0057983,17.2666375 18.0057983,17 C18.0057983,16.7333625 17.8993127,16.4777666 17.71,16.29 Z M2,8 C2,4.6862915 4.6862915,2 8,2 C11.3137085,2 14,4.6862915 14,8 C14,11.3137085 11.3137085,14 8,14 C4.6862915,14 2,11.3137085 2,8 Z"></path>
|
||||
</svg><input id="mysearch-input" type="search" placeholder="搜索" autocomplete="off"><div class="mysearch-clear"></div></div><button id="mysearch-close" type="button">搜索</button></div><div class="mysearch-result"><div id="mysearch-menu"></div><div id="mysearch-content"></div></div></div></div></body>
|
||||
</html>
|
||||
|
||||
Reference in New Issue
Block a user