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Perimeter
A=1/2*p*Inner Radios
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### Initial checklist
- [X] I read the [support docs](https://github.com/unifiedjs/.github/blob/main/support.md)
- [X] I read the [contributing guide](https://github.com/unifiedjs/.github/blob/main/c…
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I was thinking it could be useful to have a way to specify that a class should not be subclassed, so that the compiler would warn the user on compilation if it sees another class extending the origina…
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> 2017-03-18
> **Golden Rule:**
> *“ Every line of code should appear to be written by a single person, no matter the number of contributors. ”*
## HTML
#### 一丶语法
* 用两个空格来代替制表符（tab）
* 嵌套…
ghost updated
7 years ago
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入れる場所がない、関連する場所がない欄外的なコラムになりそうなまとめ場所。
メモ書きを書いておく場所なので、こういう話があると面白いのではという意見欲しい
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The current PlayCanvas script format was [introduced](https://blog.playcanvas.com/playcanvas-scripts-2-0/) in July 2016. PlayCanvas scripts are snippets of JavaScript that are (asynchronously) loaded …
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Hi,
I have a lot of issue to have materialize working as modular component. I don't want to have to load the entire JS library (almost 200KB) but only some components.
I was used to Foundation, …
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@ariel-phet asked me to do a code review of this sim, using the [PhET Code-Review Checklist](https://github.com/phetsims/phet-info/blob/master/checklists/code_review_checklist.md). I've removed 3 sec…
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- let和const
- 箭头函数
- 剩余参数（rest参数）和扩展运算符
- 模板字符串
- 解构赋值
- 类
- Set和Map
- Promise
- Proxy
- 新增数组方法
### let和const
块作用域：由一对大括号界定。
1.使用let和const声明的变量具有块级作用域。
```js
let x = 1;
{
let …
Easay updated
3 years ago
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#### TypeScript
>https://www.tslang.cn
>TypeScript是一门静态类型的语言
>TypeScript是一门开源编程语言，由Microsoft开发并维护。它首次发布于2012年10月。TypeScript是ECMAScript的超集，它支持JavaScript的所有语法和语义，并且在此之上提供了更多额外的特性，例如静态类型和更丰富的语法
…