1-js/06-advanced-functions/11-currying-partials#113
Merged
leviding merged 8 commits intojavascript-tutorial:zh-hansfrom Jun 8, 2018
Merged
1-js/06-advanced-functions/11-currying-partials#113leviding merged 8 commits intojavascript-tutorial:zh-hansfrom
leviding merged 8 commits intojavascript-tutorial:zh-hansfrom
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@leviding 翻译完成 |
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@leviding 校对认领。 |
zhongdeming428
approved these changes
Jun 6, 2018
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| # Partial application for login | ||
| # 偏函数在登陆中的应用 |
| ``` | ||
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| It allows to bind context as `this` and starting arguments of the function. | ||
| 可以看出，它允许将上下文绑定到 `this`，以及函数的前几个参数。 |
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上下文 => context
我觉得这里context不翻译比较好，因为代码中参数名为context，如果这里翻译为上下文，可能有些刚入门的童鞋不知道是指的代码中的context，当然我只是建议哈，原翻译没有任何问题。
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嗯，我觉得这个系列看到这里，应该都知道上下文了，所以直接译出来了。
| 请注意通常我们不在这里使用 `this`，但是 `bind` 需要一个值，我们必须传入，那么可以是 `null` 这样的值。 | ||
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| The function `triple` in the code below triples the value: | ||
| 以下代码中的 `triple` 函数对一个值做三次方运算： |
| ``` | ||
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| Let's curry it! | ||
| 让我们开始柯里化！ |
| 1. Call now: if passed `args` count is the same as the original function has in its definition (`func.length`) or longer, then just pass the call to it. | ||
| 2. Get a partial: otherwise, `func` is not called yet. Instead, another wrapper `pass` is returned, that will re-apply `curried` providing previous arguments together with the new ones. Then on a new call, again, we'll get either a new partial (if not enough arguments) or, finally, the result. | ||
| 1. 立刻执行：当传入的 `args` 的长度和初始函数中所定义的（`func.length`）相同或者更长，那么直接将它传入需要执行的函数。 | ||
| 2. 得到一个偏函数：否则，`func` 暂时不被调用。相反，返回另外一层封装 `pass`，其中，将之前传入的参数合并新传入的参数一起应用于 `curried` 函数。虽然再次调用。我们要么得到一个新的偏函数（如果参数数量不够），要么，最终得到结果。 |
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否则 ＝> 当传入的 args 的长度小于初始函数中所定义的（func.length）
| 1. Call now: if passed `args` count is the same as the original function has in its definition (`func.length`) or longer, then just pass the call to it. | ||
| 2. Get a partial: otherwise, `func` is not called yet. Instead, another wrapper `pass` is returned, that will re-apply `curried` providing previous arguments together with the new ones. Then on a new call, again, we'll get either a new partial (if not enough arguments) or, finally, the result. | ||
| 1. 立刻执行：当传入的 `args` 的长度和初始函数中所定义的（`func.length`）相同或者更长，那么直接将它传入需要执行的函数。 | ||
| 2. 得到一个偏函数：否则，`func` 暂时不被调用。相反，返回另外一层封装 `pass`，其中，将之前传入的参数合并新传入的参数一起应用于 `curried` 函数。虽然再次调用。我们要么得到一个新的偏函数（如果参数数量不够），要么，最终得到结果。 |
| ## 总结 | ||
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| - When we fix some arguments of an existing function, the resulting (less universal) function is called *a partial*. We can use `bind` to get a partial, but there are other ways also. | ||
| - 当我们确定一个函数的一些参数时，返回的函数（更加特定）被称为**偏函数**。 |
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We can use `bind` to get a partial, but there are other ways also.
这一句没有翻译。
可以翻译为：
我们可以使用 `bind` 来获取偏函数，但是也有其他方式获取。
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@allenlongbaobao @leviding 校对完成。 |
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@leviding @zhongdeming428 修改完毕 |
leviding
approved these changes
Jun 8, 2018
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翻译完毕 resolve #91