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42 lines
1002 B
42 lines
1002 B
var arrayConcat = require('./_arrayConcat'),
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baseFlatten = require('./_baseFlatten'),
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castArray = require('./castArray'),
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copyArray = require('./_copyArray');
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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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array = castArray(arguments[0]);
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if (length < 2) {
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return length ? copyArray(array) : [];
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}
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var args = Array(length - 1);
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while (length--) {
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args[length - 1] = arguments[length];
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}
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return arrayConcat(array, baseFlatten(args, 1));
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}
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module.exports = concat;
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