是否等效于Javascript中的Ruby Enumerable#each_slice? [英] Equivalent of Ruby Enumerable#each_slice in Javascript?
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问题描述
我正在寻找Javascript中与Ruby等效的Enumerable#each_slice.
I am looking for an equivalent of Ruby's Enumerable#each_slice in Javascript.
我已经在使用很棒的underscore.js了,它具有each(),map(),inject()...
I am already using the great underscore.js that has each(), map(), inject()...
基本上,在Ruby中,这种很棒的方法是这样做的:
Basically, in Ruby this great method does this :
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10].each_slice(3) {|a| p a}
# outputs below
[1, 2, 3]
[4, 5, 6]
[7, 8, 9]
[10]
推荐答案
我会稍微修改Brandan的答案,以使其更适合JavaScript和underscore.js的环境:
I would modify Brandan's answer slightly to fit better within the environment of JavaScript plus underscore.js:
_.mixin({ "eachSlice": function(obj, size, iterator, context) {
for (var i=0, l=obj.length; i < l; i+=size) {
iterator.call(context, obj.slice(i,i+size), i, obj);
} }});
这是演示.
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