diff options
author | Florian Dold <florian.dold@gmail.com> | 2016-11-03 01:33:53 +0100 |
---|---|---|
committer | Florian Dold <florian.dold@gmail.com> | 2016-11-03 01:33:53 +0100 |
commit | d1291f67551c58168af43698a359cb5ddfd266b0 (patch) | |
tree | 55a13ed29fe1915e3f42f1b1b7038dafa2e975a7 /node_modules/lodash/findLastIndex.js | |
parent | d0a0695fb5d34996850723f7d4b1b59c3df909c2 (diff) |
node_modules
Diffstat (limited to 'node_modules/lodash/findLastIndex.js')
-rw-r--r-- | node_modules/lodash/findLastIndex.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/node_modules/lodash/findLastIndex.js b/node_modules/lodash/findLastIndex.js new file mode 100644 index 000000000..7da3431f6 --- /dev/null +++ b/node_modules/lodash/findLastIndex.js @@ -0,0 +1,59 @@ +var baseFindIndex = require('./_baseFindIndex'), + baseIteratee = require('./_baseIteratee'), + toInteger = require('./toInteger'); + +/* Built-in method references for those with the same name as other `lodash` methods. */ +var nativeMax = Math.max, + nativeMin = Math.min; + +/** + * This method is like `_.findIndex` except that it iterates over elements + * of `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); + * // => 2 + * + * // The `_.matches` iteratee shorthand. + * _.findLastIndex(users, { 'user': 'barney', 'active': true }); + * // => 0 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastIndex(users, ['active', false]); + * // => 2 + * + * // The `_.property` iteratee shorthand. + * _.findLastIndex(users, 'active'); + * // => 0 + */ +function findLastIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length - 1; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = fromIndex < 0 + ? nativeMax(length + index, 0) + : nativeMin(index, length - 1); + } + return baseFindIndex(array, baseIteratee(predicate, 3), index, true); +} + +module.exports = findLastIndex; |