34 lines
697 B
JavaScript
34 lines
697 B
JavaScript
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/**
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* Private `concat` function to merge two array-like objects.
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*
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* @private
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* @param {Array|Arguments} [set1=[]] An array-like object.
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* @param {Array|Arguments} [set2=[]] An array-like object.
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* @return {Array} A new, merged array.
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* @example
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*
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* _concat([4, 5, 6], [1, 2, 3]); //=> [4, 5, 6, 1, 2, 3]
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*/
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export default function _concat(set1, set2) {
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set1 = set1 || [];
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set2 = set2 || [];
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var idx;
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var len1 = set1.length;
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var len2 = set2.length;
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var result = [];
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idx = 0;
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while (idx < len1) {
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result[result.length] = set1[idx];
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idx += 1;
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}
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idx = 0;
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while (idx < len2) {
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result[result.length] = set2[idx];
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idx += 1;
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}
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return result;
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}
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