| var createFindIndex = require('../internal/createFindIndex'); |
| |
| /** |
| * This method is like `_.find` except that it returns the index of the first |
| * element `predicate` returns truthy for instead of the element itself. |
| * |
| * If a property name is provided for `predicate` the created `_.property` |
| * style callback returns the property value of the given element. |
| * |
| * If a value is also provided for `thisArg` the created `_.matchesProperty` |
| * style callback returns `true` for elements that have a matching property |
| * value, else `false`. |
| * |
| * If an object is provided for `predicate` the created `_.matches` style |
| * callback returns `true` for elements that have the properties of the given |
| * object, else `false`. |
| * |
| * @static |
| * @memberOf _ |
| * @category Array |
| * @param {Array} array The array to search. |
| * @param {Function|Object|string} [predicate=_.identity] The function invoked |
| * per iteration. |
| * @param {*} [thisArg] The `this` binding of `predicate`. |
| * @returns {number} Returns the index of the found element, else `-1`. |
| * @example |
| * |
| * var users = [ |
| * { 'user': 'barney', 'active': false }, |
| * { 'user': 'fred', 'active': false }, |
| * { 'user': 'pebbles', 'active': true } |
| * ]; |
| * |
| * _.findIndex(users, function(chr) { |
| * return chr.user == 'barney'; |
| * }); |
| * // => 0 |
| * |
| * // using the `_.matches` callback shorthand |
| * _.findIndex(users, { 'user': 'fred', 'active': false }); |
| * // => 1 |
| * |
| * // using the `_.matchesProperty` callback shorthand |
| * _.findIndex(users, 'active', false); |
| * // => 0 |
| * |
| * // using the `_.property` callback shorthand |
| * _.findIndex(users, 'active'); |
| * // => 2 |
| */ |
| var findIndex = createFindIndex(); |
| |
| module.exports = findIndex; |