Javascript Lodash _.pluck 怎么了？
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What happened to Lodash _.pluck?
提问by sfletche
I once used Lodash _.pluck...I loved pluck...
我曾经使用过 Lodash _.pluck......我喜欢pluck ......
Realizing Lodash no longer supports pluck(as of Lodash 4.x), I'm struggling to remember what to use instead...
意识到 Lodash 不再支持pluck（从 Lodash 4.x 开始），我很难记住要使用什么来代替......
I went to the docs, hit cmd-f, typed 'pluck', but my poor abandoned friend is not even given a proper mention...not even a 'has been replaced by'...
我去了文档，按 cmd-f，输入“pluck”，但我可怜的被遗弃的朋友甚至没有得到适当的提及……甚至没有一个“已被替换”……
Can someone please remind me what I'm supposed to use instead?
有人可以提醒我我应该使用什么来代替吗？
回答by sfletche
Ah-ha! The Lodash Changelogsays it all...
啊哈！该Lodash更新日志说，这一切...
"Removed _.pluckin favor of _.mapwith iteratee shorthand"
“删除_.pluck以支持_.mapiteratee 速记”
var objects = [{ 'a': 1 }, { 'a': 2 }];
// in 3.10.1
_.pluck(objects, 'a'); // → [1, 2]
_.map(objects, 'a'); // → [1, 2]
// in 4.0.0
_.map(objects, 'a'); // → [1, 2]
回答by Michael J. Calkins
There isn't a need for _.mapor _.plucksince ES6 has taken off.
不需要_.map或_.pluck因为 ES6 已经起飞。
Here's an alternative using ES6 JavaScript:
这是使用 ES6 JavaScript 的替代方法：
clips.map(clip => clip.id)
clips.map(clip => clip.id)
回答by Dheeraj Nalawade
Use _.mapinstead of _.pluck. In the latest version the _.pluckhas been removed.
使用_.map代替_.pluck。在最新版本_.pluck中已删除。
回答by Richie Bendall
If you really want _.plucksupport back, you can use a mixin:
如果你真的想要_.pluck支持，你可以使用 mixin：
const _ = require("lodash")
_.mixin({
pluck: _.map
})
Because mapnow supports a string (the "iterator") as an argument instead of a function.
因为map现在支持字符串（“迭代器”）作为参数而不是函数。
回答by PayteR
Or try pure ES6 nonlodash method like this
或者尝试像这样的纯 ES6 nonlodash 方法
const reducer = (array, object) => {
array.push(object.a)
return array
}
var objects = [{ 'a': 1 }, { 'a': 2 }];
objects.reduce(reducer, [])
