Kaido Kert | f585e26 | 2020-06-08 11:42:28 -0700 | [diff] [blame] | 1 | var baseIteratee = require('./_baseIteratee'), |
| 2 | baseWhile = require('./_baseWhile'); |
| 3 | |
| 4 | /** |
| 5 | * Creates a slice of `array` excluding elements dropped from the beginning. |
| 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': false }, |
| 20 | * { 'user': 'fred', 'active': false }, |
| 21 | * { 'user': 'pebbles', 'active': true } |
| 22 | * ]; |
| 23 | * |
| 24 | * _.dropWhile(users, function(o) { return !o.active; }); |
| 25 | * // => objects for ['pebbles'] |
| 26 | * |
| 27 | * // The `_.matches` iteratee shorthand. |
| 28 | * _.dropWhile(users, { 'user': 'barney', 'active': false }); |
| 29 | * // => objects for ['fred', 'pebbles'] |
| 30 | * |
| 31 | * // The `_.matchesProperty` iteratee shorthand. |
| 32 | * _.dropWhile(users, ['active', false]); |
| 33 | * // => objects for ['pebbles'] |
| 34 | * |
| 35 | * // The `_.property` iteratee shorthand. |
| 36 | * _.dropWhile(users, 'active'); |
| 37 | * // => objects for ['barney', 'fred', 'pebbles'] |
| 38 | */ |
| 39 | function dropWhile(array, predicate) { |
| 40 | return (array && array.length) |
| 41 | ? baseWhile(array, baseIteratee(predicate, 3), true) |
| 42 | : []; |
| 43 | } |
| 44 | |
| 45 | module.exports = dropWhile; |