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43 lines
1007 B
43 lines
1007 B
var arrayPush = require('./_arrayPush'), |
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baseFlatten = require('./_baseFlatten'), |
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copyArray = require('./_copyArray'), |
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isArray = require('./isArray'); |
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/** |
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* Creates a new array concatenating `array` with any additional arrays |
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* and/or values. |
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* |
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* @static |
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* @memberOf _ |
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* @since 4.0.0 |
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* @category Array |
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* @param {Array} array The array to concatenate. |
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* @param {...*} [values] The values to concatenate. |
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* @returns {Array} Returns the new concatenated array. |
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* @example |
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* |
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* var array = [1]; |
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* var other = _.concat(array, 2, [3], [[4]]); |
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* |
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* console.log(other); |
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* // => [1, 2, 3, [4]] |
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* |
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* console.log(array); |
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* // => [1] |
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*/ |
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function concat() { |
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var length = arguments.length; |
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if (!length) { |
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return []; |
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} |
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var args = Array(length - 1), |
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array = arguments[0], |
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index = length; |
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while (index--) { |
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args[index - 1] = arguments[index]; |
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} |
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return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)); |
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} |
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module.exports = concat;
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