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zloirock
e5ff47cc43
Can build as library
Change callback args {Array::, Array, Object, Map, Set}reduceTo
Object::tie additional args & placeholder
add Function::by ???
38 lines
1013 B
JavaScript
38 lines
1013 B
JavaScript
$define(PROTO, 'Array', {
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/**
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* Alternatives:
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* http://sugarjs.com/api/Array/at
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* With Proxy: http://www.h3manth.com/new/blog/2013/negative-array-index-in-javascript/
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*/
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at: function(index){
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return this[0 > (index |= 0) ? this.length + index : index];
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},
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/**
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* Alternatives:
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* http://underscorejs.org/#pluck
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* http://sugarjs.com/api/Array/map
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* http://api.prototypejs.org/language/Enumerable/prototype/pluck/
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*/
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pluck: function(key){
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var that = ES5Object(this)
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, length = toLength(that.length)
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, result = Array(length)
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, i = 0
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, val;
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for(; length > i; i++)if(i in that){
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val = that[i];
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result[i] = val == undefined ? undefined : val[key];
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}
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return result;
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},
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reduceTo: reduceTo,
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/**
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* Alternatives:
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* http://mootools.net/docs/core/Types/Array#Array:append
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* http://api.jquery.com/jQuery.merge/
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*/
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merge: function(arrayLike){
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push.apply(this, ES5Object(arrayLike));
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return this;
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}
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}); |