Prototypes——模具行业从业者必备知识手册

system 2

<h2>Prototypes</h2>

<p>The functions in this folder are to be use for keeping cached references to the built-in prototypes, so that people can't inadvertently break the library by making mistakes in userland.</p>

<p>See https://github.com/sinonjs/sinon/pull/1523</p>

<h3>Without cached references</h3>

<pre><code>
// in userland, the library user needs to replace the filter method on
// Array.prototype
var array = [1, 2, 3];
sinon.replace(array, "filter", sinon.fake.returns(2));

// in a sinon module, the library author needs to use the filter method
var someArray = ["a", "b", 42, "c"];
var answer = filter(someArray, function (v) {
return v === 42;
});

console.log(answer);
// => 2
</code></pre>

<h3>With cached references</h3>

<pre><code>
// in userland, the library user needs to replace the filter method on
// Array.prototype
var array = [1, 2, 3];
sinon.replace(array, "filter", sinon.fake.returns(2));

// in a sinon module, the library author needs to use the filter method
// get a reference to the original Array.prototype.filter
var filter = require("@sinonjs/commons").prototypes.array.filter;
var someArray = ["a", "b", 42, "c"];
var answer = filter(someArray, function (v) {
return v === 42;
});

console.log(answer);
// => 42
</code></pre>

<hr>

<p>本文由模极社发布</p>

<table>
<tr><td>分类</td><td>要点</td><td>建议/说明</td></tr>
<tr><td>核心概念</td><td>Prototypes</td><td>详见正文</td></tr>
<tr><td>操作步骤</td><td>Prototypes</td><td>详见正文</td></tr>
<tr><td>注意事项</td><td>Prototypes</td><td>详见正文</td></tr>
<tr><td>适用场景</td><td>Prototypes</td><td>详见正文</td></tr>
<tr><td>常见问题</td><td>Prototypes</td><td>详见正文</td></tr>
</table>

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<p>这个参数你们一般设多少？评论区说说。</p>