| /** Used for native method references. */ |
| var objectProto = Object.prototype; |
| |
| /** Used to check objects for own properties. */ |
| var hasOwnProperty = objectProto.hasOwnProperty; |
| |
| /** |
| * Checks if a cached value for `key` exists. |
| * |
| * @private |
| * @name has |
| * @memberOf _.memoize.Cache |
| * @param {string} key The key of the entry to check. |
| * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. |
| */ |
| function mapHas(key) { |
| return key != '__proto__' && hasOwnProperty.call(this.__data__, key); |
| } |
| |
| module.exports = mapHas; |
