40 lines
925 B
Plaintext
40 lines
925 B
Plaintext
import baseSlice from './_baseSlice.js';
|
|
import toInteger from './toInteger.js';
|
|
|
|
/**
|
|
* Creates a slice of `array` with `n` elements dropped from the end.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 3.0.0
|
|
* @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 an iteratee for methods 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 == null ? 0 : array.length;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
n = (guard || n === undefined) ? 1 : toInteger(n);
|
|
n = length - n;
|
|
return baseSlice(array, 0, n < 0 ? 0 : n);
|
|
}
|
|
|
|
export default dropRight;
|