dropRightWhile.js (1412B)
1 var baseIteratee = require('./_baseIteratee'), 2 baseWhile = require('./_baseWhile'); 3 4 /** 5 * Creates a slice of `array` excluding elements dropped from the end. 6 * Elements are dropped until `predicate` returns falsey. The predicate is 7 * invoked with three arguments: (value, index, array). 8 * 9 * @static 10 * @memberOf _ 11 * @since 3.0.0 12 * @category Array 13 * @param {Array} array The array to query. 14 * @param {Function} [predicate=_.identity] The function invoked per iteration. 15 * @returns {Array} Returns the slice of `array`. 16 * @example 17 * 18 * var users = [ 19 * { 'user': 'barney', 'active': true }, 20 * { 'user': 'fred', 'active': false }, 21 * { 'user': 'pebbles', 'active': false } 22 * ]; 23 * 24 * _.dropRightWhile(users, function(o) { return !o.active; }); 25 * // => objects for ['barney'] 26 * 27 * // The `_.matches` iteratee shorthand. 28 * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); 29 * // => objects for ['barney', 'fred'] 30 * 31 * // The `_.matchesProperty` iteratee shorthand. 32 * _.dropRightWhile(users, ['active', false]); 33 * // => objects for ['barney'] 34 * 35 * // The `_.property` iteratee shorthand. 36 * _.dropRightWhile(users, 'active'); 37 * // => objects for ['barney', 'fred', 'pebbles'] 38 */ 39 function dropRightWhile(array, predicate) { 40 return (array && array.length) 41 ? baseWhile(array, baseIteratee(predicate, 3), true, true) 42 : []; 43 } 44 45 module.exports = dropRightWhile;