You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
959 B
JavaScript
41 lines
959 B
JavaScript
9 years ago
|
var baseSlice = require('../internal/baseSlice'),
|
||
|
|
isIterateeCall = require('../internal/isIterateeCall');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a slice of `array` with `n` elements taken from the end.
|
||
|
|
*
|
||
|
|
* @static
|
||
|
|
* @memberOf _
|
||
|
|
* @category Array
|
||
|
|
* @param {Array} array The array to query.
|
||
|
|
* @param {number} [n=1] The number of elements to take.
|
||
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
||
|
|
* @returns {Array} Returns the slice of `array`.
|
||
|
|
* @example
|
||
|
|
*
|
||
|
|
* _.takeRight([1, 2, 3]);
|
||
|
|
* // => [3]
|
||
|
|
*
|
||
|
|
* _.takeRight([1, 2, 3], 2);
|
||
|
|
* // => [2, 3]
|
||
|
|
*
|
||
|
|
* _.takeRight([1, 2, 3], 5);
|
||
|
|
* // => [1, 2, 3]
|
||
|
|
*
|
||
|
|
* _.takeRight([1, 2, 3], 0);
|
||
|
|
* // => []
|
||
|
|
*/
|
||
|
|
function takeRight(array, n, guard) {
|
||
|
|
var length = array ? array.length : 0;
|
||
|
|
if (!length) {
|
||
|
|
return [];
|
||
|
|
}
|
||
|
|
if (guard ? isIterateeCall(array, n, guard) : n == null) {
|
||
|
|
n = 1;
|
||
|
|
}
|
||
|
|
n = length - (+n || 0);
|
||
|
|
return baseSlice(array, n < 0 ? 0 : n);
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = takeRight;
|