| var baseSlice = require('../internal/baseSlice'), |
| isIterateeCall = require('../internal/isIterateeCall'); |
| |
| /** |
| * Creates a slice of `array` with `n` elements dropped from the end. |
| * |
| * @static |
| * @memberOf _ |
| * @category Array |
| * @param {Array} array The array to query. |
| * @param {number} [n=1] The number of elements to drop. |
| * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. |
| * @returns {Array} Returns the slice of `array`. |
| * @example |
| * |
| * _.dropRight([1, 2, 3]); |
| * // => [1, 2] |
| * |
| * _.dropRight([1, 2, 3], 2); |
| * // => [1] |
| * |
| * _.dropRight([1, 2, 3], 5); |
| * // => [] |
| * |
| * _.dropRight([1, 2, 3], 0); |
| * // => [1, 2, 3] |
| */ |
| function dropRight(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, 0, n < 0 ? 0 : n); |
| } |
| |
| module.exports = dropRight; |