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