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4ab24ae284
| Author | SHA1 | Date | |
|---|---|---|---|
| 4ab24ae284 | |||
| 102b0862b9 | |||
| 0b9af04f70 |
@ -360,9 +360,9 @@ jobs:
|
||||
<a href="https://github.com/chaos-cn" title="chaos"><img src="https://avatars.githubusercontent.com/u/71205599?v=4" width="42;" alt="chaos"/></a>
|
||||
<a href="https://github.com/QinIndexCode" title="fault"><img src="https://avatars.githubusercontent.com/u/177287013?v=4" width="42;" alt="fault"/></a>
|
||||
<a href="https://github.com/wsypower" title="魏"><img src="https://avatars.githubusercontent.com/u/31298317?v=4" width="42;" alt="魏"/></a>
|
||||
<a href="https://github.com/buyfakett" title="buyfakett"><img src="https://avatars.githubusercontent.com/u/46560426?v=4" width="42;" alt="buyfakett"/></a>
|
||||
<a href="https://github.com/itldg" title="老大哥"><img src="https://avatars.githubusercontent.com/u/13432299?v=4" width="42;" alt="老大哥"/></a>
|
||||
<a href="https://github.com/wangdaodao" title="王叨叨"><img src="https://avatars.githubusercontent.com/u/2317442?v=4" width="42;" alt="王叨叨"/></a>
|
||||
<a href="https://github.com/itldg" title="老大哥"><img src="https://avatars.githubusercontent.com/u/13432299?v=4" width="42;" alt="老大哥"/></a>
|
||||
<a href="https://github.com/buyfakett" title="buyfakett"><img src="https://avatars.githubusercontent.com/u/46560426?v=4" width="42;" alt="buyfakett"/></a>
|
||||
<a href="https://github.com/catcto" title="小武Alan"><img src="https://avatars.githubusercontent.com/u/5467932?v=4" width="42;" alt="小武Alan"/></a>
|
||||
<a href="https://github.com/witt-bit" title="witt"><img src="https://avatars.githubusercontent.com/u/52407727?v=4" width="42;" alt="witt"/></a>
|
||||
<a href="https://github.com/ryanhex53" title="ryanhex53"><img src="https://avatars.githubusercontent.com/u/360426?v=4" width="42;" alt="ryanhex53"/></a>
|
||||
@ -376,13 +376,13 @@ jobs:
|
||||
<a href="https://github.com/ljq" title="Jack Liu"><img src="https://avatars.githubusercontent.com/u/7278286?v=4" width="42;" alt="Jack Liu"/></a>
|
||||
<a href="https://github.com/jasnzhuang" title="Jason Zhuang"><img src="https://avatars.githubusercontent.com/u/16612921?v=4" width="42;" alt="Jason Zhuang"/></a>
|
||||
<a href="https://github.com/Jovins" title="Jovins"><img src="https://avatars.githubusercontent.com/u/17738992?v=4" width="42;" alt="Jovins"/></a>
|
||||
<a href="https://github.com/infanx" title="infanx"><img src="https://avatars.githubusercontent.com/u/65985757?v=4" width="42;" alt="infanx"/></a>
|
||||
<a href="https://github.com/greyhao" title="greyhao"><img src="https://avatars.githubusercontent.com/u/107107440?v=4" width="42;" alt="greyhao"/></a>
|
||||
<a href="https://github.com/izven" title="Zhang"><img src="https://avatars.githubusercontent.com/u/2149051?v=4" width="42;" alt="Zhang"/></a>
|
||||
<a href="https://github.com/Kisa-Dong" title="Kisa-Dong"><img src="https://avatars.githubusercontent.com/u/84782008?v=4" width="42;" alt="Kisa-Dong"/></a>
|
||||
<a href="https://github.com/SuperDiscovery" title="SuperDiscovery"><img src="https://avatars.githubusercontent.com/u/49646863?v=4" width="42;" alt="SuperDiscovery"/></a>
|
||||
<a href="https://github.com/ThanatosXingYu" title="Thanatos"><img src="https://avatars.githubusercontent.com/u/53430376?v=4" width="42;" alt="Thanatos"/></a>
|
||||
<a href="https://github.com/XYZscratcher" title="XYZ"><img src="https://avatars.githubusercontent.com/u/108533817?v=4" width="42;" alt="XYZ"/></a>
|
||||
<a href="https://github.com/izven" title="Zhang"><img src="https://avatars.githubusercontent.com/u/2149051?v=4" width="42;" alt="Zhang"/></a>
|
||||
<a href="https://github.com/greyhao" title="greyhao"><img src="https://avatars.githubusercontent.com/u/107107440?v=4" width="42;" alt="greyhao"/></a>
|
||||
<a href="https://github.com/infanx" title="infanx"><img src="https://avatars.githubusercontent.com/u/65985757?v=4" width="42;" alt="infanx"/></a>
|
||||
<a href="https://github.com/ThanatosXingYu" title="Thanatos"><img src="https://avatars.githubusercontent.com/u/53430376?v=4" width="42;" alt="Thanatos"/></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/icer233" title="icer"><img src="https://avatars.githubusercontent.com/u/74440627?v=4" width="42;" alt="icer"/></a>
|
||||
<a href="https://github.com/auroraslot" title="irony"><img src="https://avatars.githubusercontent.com/u/48817882?v=4" width="42;" alt="irony"/></a>
|
||||
@ -406,13 +406,13 @@ jobs:
|
||||
<a href="https://github.com/godot42x" title="godot42"><img src="https://avatars.githubusercontent.com/u/79260851?v=4" width="42;" alt="godot42"/></a>
|
||||
<a href="https://github.com/gi-b716" title="Gavin"><img src="https://avatars.githubusercontent.com/u/78394473?v=4" width="42;" alt="Gavin"/></a>
|
||||
<a href="https://github.com/fjqz177" title="fjqz177"><img src="https://avatars.githubusercontent.com/u/83070583?v=4" width="42;" alt="fjqz177"/></a>
|
||||
<a href="https://github.com/fenglielie" title="fenglielie"><img src="https://avatars.githubusercontent.com/u/51266402?v=4" width="42;" alt="fenglielie"/></a>
|
||||
<a href="https://github.com/fakevn" title="fakevn"><img src="https://avatars.githubusercontent.com/u/11464386?v=4" width="42;" alt="fakevn"/></a>
|
||||
<a href="https://github.com/emoji-share" title="emoji-share🤪"><img src="https://avatars.githubusercontent.com/u/192275245?v=4" width="42;" alt="emoji-share🤪"/></a>
|
||||
<a href="https://github.com/cool9203" title="cool9203"><img src="https://avatars.githubusercontent.com/u/29609607?v=4" width="42;" alt="cool9203"/></a>
|
||||
<a href="https://github.com/gaoxiaoduan" title="Coder Duan"><img src="https://avatars.githubusercontent.com/u/69953511?v=4" width="42;" alt="Coder Duan"/></a>
|
||||
<a href="https://github.com/lijc210" title="cizai"><img src="https://avatars.githubusercontent.com/u/10651081?v=4" width="42;" alt="cizai"/></a>
|
||||
<a href="https://github.com/chyok" title="chyok"><img src="https://avatars.githubusercontent.com/u/32629225?v=4" width="42;" alt="chyok"/></a>
|
||||
<a href="https://github.com/zlfyuan" title="bgbgPang"><img src="https://avatars.githubusercontent.com/u/19658018?v=4" width="42;" alt="bgbgPang"/></a>
|
||||
<a href="https://github.com/Zeng-qh" title="都一样"><img src="https://avatars.githubusercontent.com/u/40046415?v=4" width="42;" alt="都一样"/></a>
|
||||
<a href="https://github.com/binscor" title="binscor"><img src="https://avatars.githubusercontent.com/u/37325821?v=4" width="42;" alt="binscor"/></a>
|
||||
<a href="https://github.com/qwxingzhe" title="行者"><img src="https://avatars.githubusercontent.com/u/7071651?v=4" width="42;" alt="行者"/></a>
|
||||
@ -444,6 +444,7 @@ jobs:
|
||||
<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/miclon-dev" title="miclon-dev"><img src="https://avatars.githubusercontent.com/u/111753685?v=4" width="42;" alt="miclon-dev"/></a>
|
||||
<a href="https://github.com/lykjjj" title="lykjjj"><img src="https://avatars.githubusercontent.com/u/58510058?v=4" width="42;" alt="lykjjj"/></a>
|
||||
<a href="https://github.com/zlfyuan" title="bgbgPang"><img src="https://avatars.githubusercontent.com/u/19658018?v=4" width="42;" alt="bgbgPang"/></a>
|
||||
<a href="https://github.com/mariuszmichalowski" title="Mariusz Michalowski"><img src="https://avatars.githubusercontent.com/u/92091891?v=4" width="42;" alt="Mariusz Michalowski"/></a>
|
||||
<a href="https://github.com/isecret" title="Mao Wang"><img src="https://avatars.githubusercontent.com/u/15724152?v=4" width="42;" alt="Mao Wang"/></a>
|
||||
<a href="https://github.com/lvelvee" title="Lve Lvee"><img src="https://avatars.githubusercontent.com/u/25785753?v=4" width="42;" alt="Lve Lvee"/></a>
|
||||
|
||||
15
README.md
15
README.md
@ -360,9 +360,9 @@ Quick Reference
|
||||
<a href="https://github.com/chaos-cn" title="chaos"><img src="https://avatars.githubusercontent.com/u/71205599?v=4" width="42;" alt="chaos"/></a>
|
||||
<a href="https://github.com/QinIndexCode" title="fault"><img src="https://avatars.githubusercontent.com/u/177287013?v=4" width="42;" alt="fault"/></a>
|
||||
<a href="https://github.com/wsypower" title="魏"><img src="https://avatars.githubusercontent.com/u/31298317?v=4" width="42;" alt="魏"/></a>
|
||||
<a href="https://github.com/buyfakett" title="buyfakett"><img src="https://avatars.githubusercontent.com/u/46560426?v=4" width="42;" alt="buyfakett"/></a>
|
||||
<a href="https://github.com/itldg" title="老大哥"><img src="https://avatars.githubusercontent.com/u/13432299?v=4" width="42;" alt="老大哥"/></a>
|
||||
<a href="https://github.com/wangdaodao" title="王叨叨"><img src="https://avatars.githubusercontent.com/u/2317442?v=4" width="42;" alt="王叨叨"/></a>
|
||||
<a href="https://github.com/itldg" title="老大哥"><img src="https://avatars.githubusercontent.com/u/13432299?v=4" width="42;" alt="老大哥"/></a>
|
||||
<a href="https://github.com/buyfakett" title="buyfakett"><img src="https://avatars.githubusercontent.com/u/46560426?v=4" width="42;" alt="buyfakett"/></a>
|
||||
<a href="https://github.com/catcto" title="小武Alan"><img src="https://avatars.githubusercontent.com/u/5467932?v=4" width="42;" alt="小武Alan"/></a>
|
||||
<a href="https://github.com/witt-bit" title="witt"><img src="https://avatars.githubusercontent.com/u/52407727?v=4" width="42;" alt="witt"/></a>
|
||||
<a href="https://github.com/ryanhex53" title="ryanhex53"><img src="https://avatars.githubusercontent.com/u/360426?v=4" width="42;" alt="ryanhex53"/></a>
|
||||
@ -376,13 +376,13 @@ Quick Reference
|
||||
<a href="https://github.com/ljq" title="Jack Liu"><img src="https://avatars.githubusercontent.com/u/7278286?v=4" width="42;" alt="Jack Liu"/></a>
|
||||
<a href="https://github.com/jasnzhuang" title="Jason Zhuang"><img src="https://avatars.githubusercontent.com/u/16612921?v=4" width="42;" alt="Jason Zhuang"/></a>
|
||||
<a href="https://github.com/Jovins" title="Jovins"><img src="https://avatars.githubusercontent.com/u/17738992?v=4" width="42;" alt="Jovins"/></a>
|
||||
<a href="https://github.com/infanx" title="infanx"><img src="https://avatars.githubusercontent.com/u/65985757?v=4" width="42;" alt="infanx"/></a>
|
||||
<a href="https://github.com/greyhao" title="greyhao"><img src="https://avatars.githubusercontent.com/u/107107440?v=4" width="42;" alt="greyhao"/></a>
|
||||
<a href="https://github.com/izven" title="Zhang"><img src="https://avatars.githubusercontent.com/u/2149051?v=4" width="42;" alt="Zhang"/></a>
|
||||
<a href="https://github.com/Kisa-Dong" title="Kisa-Dong"><img src="https://avatars.githubusercontent.com/u/84782008?v=4" width="42;" alt="Kisa-Dong"/></a>
|
||||
<a href="https://github.com/SuperDiscovery" title="SuperDiscovery"><img src="https://avatars.githubusercontent.com/u/49646863?v=4" width="42;" alt="SuperDiscovery"/></a>
|
||||
<a href="https://github.com/ThanatosXingYu" title="Thanatos"><img src="https://avatars.githubusercontent.com/u/53430376?v=4" width="42;" alt="Thanatos"/></a>
|
||||
<a href="https://github.com/XYZscratcher" title="XYZ"><img src="https://avatars.githubusercontent.com/u/108533817?v=4" width="42;" alt="XYZ"/></a>
|
||||
<a href="https://github.com/izven" title="Zhang"><img src="https://avatars.githubusercontent.com/u/2149051?v=4" width="42;" alt="Zhang"/></a>
|
||||
<a href="https://github.com/greyhao" title="greyhao"><img src="https://avatars.githubusercontent.com/u/107107440?v=4" width="42;" alt="greyhao"/></a>
|
||||
<a href="https://github.com/infanx" title="infanx"><img src="https://avatars.githubusercontent.com/u/65985757?v=4" width="42;" alt="infanx"/></a>
|
||||
<a href="https://github.com/ThanatosXingYu" title="Thanatos"><img src="https://avatars.githubusercontent.com/u/53430376?v=4" width="42;" alt="Thanatos"/></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/icer233" title="icer"><img src="https://avatars.githubusercontent.com/u/74440627?v=4" width="42;" alt="icer"/></a>
|
||||
<a href="https://github.com/auroraslot" title="irony"><img src="https://avatars.githubusercontent.com/u/48817882?v=4" width="42;" alt="irony"/></a>
|
||||
@ -406,13 +406,13 @@ Quick Reference
|
||||
<a href="https://github.com/godot42x" title="godot42"><img src="https://avatars.githubusercontent.com/u/79260851?v=4" width="42;" alt="godot42"/></a>
|
||||
<a href="https://github.com/gi-b716" title="Gavin"><img src="https://avatars.githubusercontent.com/u/78394473?v=4" width="42;" alt="Gavin"/></a>
|
||||
<a href="https://github.com/fjqz177" title="fjqz177"><img src="https://avatars.githubusercontent.com/u/83070583?v=4" width="42;" alt="fjqz177"/></a>
|
||||
<a href="https://github.com/fenglielie" title="fenglielie"><img src="https://avatars.githubusercontent.com/u/51266402?v=4" width="42;" alt="fenglielie"/></a>
|
||||
<a href="https://github.com/fakevn" title="fakevn"><img src="https://avatars.githubusercontent.com/u/11464386?v=4" width="42;" alt="fakevn"/></a>
|
||||
<a href="https://github.com/emoji-share" title="emoji-share🤪"><img src="https://avatars.githubusercontent.com/u/192275245?v=4" width="42;" alt="emoji-share🤪"/></a>
|
||||
<a href="https://github.com/cool9203" title="cool9203"><img src="https://avatars.githubusercontent.com/u/29609607?v=4" width="42;" alt="cool9203"/></a>
|
||||
<a href="https://github.com/gaoxiaoduan" title="Coder Duan"><img src="https://avatars.githubusercontent.com/u/69953511?v=4" width="42;" alt="Coder Duan"/></a>
|
||||
<a href="https://github.com/lijc210" title="cizai"><img src="https://avatars.githubusercontent.com/u/10651081?v=4" width="42;" alt="cizai"/></a>
|
||||
<a href="https://github.com/chyok" title="chyok"><img src="https://avatars.githubusercontent.com/u/32629225?v=4" width="42;" alt="chyok"/></a>
|
||||
<a href="https://github.com/zlfyuan" title="bgbgPang"><img src="https://avatars.githubusercontent.com/u/19658018?v=4" width="42;" alt="bgbgPang"/></a>
|
||||
<a href="https://github.com/Zeng-qh" title="都一样"><img src="https://avatars.githubusercontent.com/u/40046415?v=4" width="42;" alt="都一样"/></a>
|
||||
<a href="https://github.com/binscor" title="binscor"><img src="https://avatars.githubusercontent.com/u/37325821?v=4" width="42;" alt="binscor"/></a>
|
||||
<a href="https://github.com/qwxingzhe" title="行者"><img src="https://avatars.githubusercontent.com/u/7071651?v=4" width="42;" alt="行者"/></a>
|
||||
@ -444,6 +444,7 @@ Quick Reference
|
||||
<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/miclon-dev" title="miclon-dev"><img src="https://avatars.githubusercontent.com/u/111753685?v=4" width="42;" alt="miclon-dev"/></a>
|
||||
<a href="https://github.com/lykjjj" title="lykjjj"><img src="https://avatars.githubusercontent.com/u/58510058?v=4" width="42;" alt="lykjjj"/></a>
|
||||
<a href="https://github.com/zlfyuan" title="bgbgPang"><img src="https://avatars.githubusercontent.com/u/19658018?v=4" width="42;" alt="bgbgPang"/></a>
|
||||
<a href="https://github.com/mariuszmichalowski" title="Mariusz Michalowski"><img src="https://avatars.githubusercontent.com/u/92091891?v=4" width="42;" alt="Mariusz Michalowski"/></a>
|
||||
<a href="https://github.com/isecret" title="Mao Wang"><img src="https://avatars.githubusercontent.com/u/15724152?v=4" width="42;" alt="Mao Wang"/></a>
|
||||
<a href="https://github.com/lvelvee" title="Lve Lvee"><img src="https://avatars.githubusercontent.com/u/25785753?v=4" width="42;" alt="Lve Lvee"/></a>
|
||||
|
||||
396
docs/matlab.md
396
docs/matlab.md
@ -1410,6 +1410,402 @@ true 或 false 条件
|
||||
[thingSpeakWrite](https://ww2.mathworks.cn/help/matlab/ref/thingspeakwrite.html) | 将数据写入 `ThingSpeak` 通道
|
||||
<!--rehype:className=style-list-->
|
||||
|
||||
## 面向对象基础
|
||||
|
||||
MATLAB 支持面向对象编程，虽然很少有人使用。
|
||||
|
||||
MATLAB 的自定义类型可以分成全值类和句柄类，它们的区别在于句柄类相当于指针，赋值时只会进行浅拷贝，全值类总是会进行深拷贝。下面的例子只涉及全值类。
|
||||
|
||||
### 简单例子
|
||||
|
||||
一个简单的 `point2d` 类（文件名必须与类名相同：`point2d.m` ）
|
||||
|
||||
```matlab
|
||||
classdef point2d
|
||||
properties % 属性
|
||||
x
|
||||
y
|
||||
end
|
||||
methods % 方法
|
||||
function obj = point2d(x0,y0) % 构造方法
|
||||
if nargin == 0
|
||||
obj.x = 0;
|
||||
obj.y = 0;
|
||||
elseif nargin == 2
|
||||
obj.x = x0;
|
||||
obj.y = y0;
|
||||
else
|
||||
error("unsupported arguments")
|
||||
end
|
||||
end
|
||||
function obj = normalize(obj) % 普通方法
|
||||
% obj 相当于 Python 的 self
|
||||
r = sqrt(obj.x^2+obj.y^2);
|
||||
obj.x = obj.x/r;
|
||||
obj.y = obj.y/r;
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
使用例如
|
||||
|
||||
```matlab
|
||||
a = point2d(3,4);
|
||||
fprintf('(%f, %f)\n',a.x,a.y);
|
||||
% (3.000000, 4.000000)
|
||||
|
||||
b = a.normalize();
|
||||
fprintf('(%f, %f)\n',b.x,b.y);
|
||||
% (0.600000, 0.800000)
|
||||
```
|
||||
|
||||
### 属性
|
||||
|
||||
可以给属性提供默认值
|
||||
|
||||
```matlab
|
||||
classdef point2d
|
||||
properties
|
||||
x = cos(pi/12);
|
||||
y = sin(pi/12);
|
||||
end
|
||||
...
|
||||
end
|
||||
```
|
||||
|
||||
默认值不需要是常量，可以是任何表达式
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
properties
|
||||
time_stamp = date;
|
||||
end
|
||||
...
|
||||
end
|
||||
```
|
||||
|
||||
属性的默认值在类被加载时会被计算，并不会在每一个对象创建时重新计算。
|
||||
|
||||
可以将属性标记为只读（`Constant`），不允许对其进行修改。
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
properties(Constant)
|
||||
R = pi/180;
|
||||
end
|
||||
...
|
||||
end
|
||||
```
|
||||
|
||||
尝试修改会报错
|
||||
|
||||
```matlab
|
||||
s = demo();
|
||||
disp(s.R)
|
||||
|
||||
s.R = 100; % error
|
||||
```
|
||||
|
||||
### 构造方法和普通方法
|
||||
|
||||
#### 构造方法
|
||||
|
||||
与类同名的方法称为构造方法。MATLAB只允许创建一个构造方法，但是我们通过nargin判断参数个数，并据此实现不同的创建行为，例如
|
||||
|
||||
```matlab
|
||||
function obj = point2d(x0,y0)
|
||||
if nargin == 0
|
||||
obj.x = 0;
|
||||
obj.y = 0;
|
||||
elseif nargin == 2
|
||||
obj.x = x0;
|
||||
obj.y = y0;
|
||||
else
|
||||
error("unsupported arguments")
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
例如
|
||||
|
||||
```matlab
|
||||
s1 = point2d(1,2);
|
||||
s2 = point2d();
|
||||
s3 = point2d;
|
||||
```
|
||||
|
||||
#### 普通方法
|
||||
|
||||
类的普通方法的第一个参数是对象自身，并且习惯上使用obj表示。
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
properties
|
||||
x = 100;
|
||||
end
|
||||
methods
|
||||
function z = compute(obj,y)
|
||||
z = obj.x + y;
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
普通方法可以通过对象或类调用
|
||||
|
||||
```matlab
|
||||
s = demo();
|
||||
s.compute(10); % 110
|
||||
compute(s,20); % 120
|
||||
```
|
||||
|
||||
### 静态方法
|
||||
|
||||
MATLAB 提供了静态方法，在定义时标记为 `Static`，静态方法没有`obj`参数，不绑定任何的对象，不能访问类对象的普通属性，但是可以访问类的常量属性。
|
||||
|
||||
例如
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
methods(Static) % 静态方法
|
||||
function hello()
|
||||
disp("hello,world!")
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
使用例如
|
||||
|
||||
```matlab
|
||||
>> demo.hello()
|
||||
hello,world!
|
||||
>> s = demo();
|
||||
>> s.hello()
|
||||
hello,world!
|
||||
```
|
||||
|
||||
### 重写disp方法
|
||||
|
||||
可以通过提供`disp`方法来定制自定义类型调用`disp`函数时的行为，例如
|
||||
|
||||
```matlab
|
||||
classdef point2d
|
||||
properties
|
||||
x = 0
|
||||
y = 0
|
||||
end
|
||||
methods
|
||||
function disp(obj)
|
||||
fprintf("(%f,%f)",obj.x,obj.y);
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
提供`disp`函数后的输出
|
||||
|
||||
```matlab
|
||||
>> s = point2d();
|
||||
>> disp(s)
|
||||
|
||||
(0.000000,0.000000)
|
||||
```
|
||||
|
||||
作为对比，默认情况下的输出
|
||||
|
||||
```matlab
|
||||
>> s = point2d();
|
||||
>> disp(s)
|
||||
point2d with properties:
|
||||
|
||||
x: 0
|
||||
y: 0
|
||||
R: 0.0175
|
||||
```
|
||||
|
||||
### 重载运算符
|
||||
|
||||
MATLAB 支持自定义类型对运算符的重载，例如`plus`方法对应加法。
|
||||
|
||||
```matlab
|
||||
classdef point2d
|
||||
properties
|
||||
x
|
||||
y
|
||||
end
|
||||
methods
|
||||
function obj = point2d(x0,y0)
|
||||
% same as before
|
||||
end
|
||||
function result = plus(obj, other)
|
||||
result = point2d(obj.x + other.x, obj.y + other.y);
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
例如
|
||||
|
||||
```matlab
|
||||
>> a = point2d(1,0);
|
||||
>> b = point2d(0,2);
|
||||
>> a + b
|
||||
ans =
|
||||
point2d with properties:
|
||||
|
||||
x: 1
|
||||
y: 2
|
||||
```
|
||||
|
||||
### 属性和方法的权限
|
||||
|
||||
MATLAB 提供了比 C++ 和 Java 更加精细的访问权限控制，默认情况下所有的属性和方法都是public。
|
||||
|
||||
基本的三种权限例如
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
properties % public
|
||||
x1
|
||||
end
|
||||
properties(Access = protected)
|
||||
x2
|
||||
end
|
||||
properties(Access = privated)
|
||||
x3
|
||||
end
|
||||
|
||||
methods % public
|
||||
function h1(obj)
|
||||
end
|
||||
end
|
||||
methods(Access = protected)
|
||||
function h2(obj)
|
||||
end
|
||||
end
|
||||
methods(Access = privated)
|
||||
function h3(obj)
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
MATLAB对属性提供了更精细的访问权限，可以将其拆分为读权限和写权限，例如
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
properties(SetAccess = private)
|
||||
x1
|
||||
end
|
||||
properties(SetAccess = private, GetAccess = protected)
|
||||
x2
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
### 类的继承
|
||||
|
||||
MATLAB 使用 `<` 表示继承关系。
|
||||
|
||||
基类
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
properties
|
||||
Value
|
||||
end
|
||||
methods
|
||||
function obj = demo(val)
|
||||
if nargin > 0
|
||||
obj.Value = val;
|
||||
else
|
||||
obj.Value = 0;
|
||||
end
|
||||
end
|
||||
|
||||
function displayValue(obj)
|
||||
disp(['Value: ', num2str(obj.Value)]);
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
派生类
|
||||
|
||||
```matlab
|
||||
classdef demo2 < demo
|
||||
properties
|
||||
ExtraValue
|
||||
end
|
||||
|
||||
methods
|
||||
function obj = demo2(val, extraVal)
|
||||
obj = obj@demo(val); % 调用基类构造方法
|
||||
if nargin > 1
|
||||
obj.ExtraValue = extraVal;
|
||||
else
|
||||
obj.ExtraValue = 0;
|
||||
end
|
||||
end
|
||||
|
||||
function displayValue(obj)
|
||||
displayValue@demo(obj); % 调用基类的同名函数
|
||||
disp(['Extra Value: ',num2str(obj.ExtraValue)]);
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
### 补充
|
||||
|
||||
#### 抽象方法和抽象类
|
||||
|
||||
MATLAB提供了抽象方法和抽象类。
|
||||
|
||||
抽象基类（不可实例化）
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
methods(Abstract) % 抽象方法
|
||||
hello(obj) % 只有接口，没有实现
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
继承自抽象基类的派生类（实现了抽象方法，可以实例化）
|
||||
|
||||
```matlab
|
||||
classdef demo2 < demo
|
||||
methods
|
||||
function hello(obj) % 实现抽象方法
|
||||
disp("hello,world!")
|
||||
end
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
#### 禁止继承和重写
|
||||
|
||||
可以使用 `Sealed` 关键词来禁止一个类被继承，例如
|
||||
|
||||
```matlab
|
||||
classdef (Sealed) demo
|
||||
...
|
||||
end
|
||||
```
|
||||
|
||||
可以使用 `Sealed` 关键词来禁止方法被派生类重写，例如
|
||||
|
||||
```matlab
|
||||
classdef demo
|
||||
methods(Sealed)
|
||||
...
|
||||
end
|
||||
end
|
||||
```
|
||||
|
||||
另见
|
||||
----
|
||||
|
||||
|
||||
Reference in New Issue
Block a user