name : _listCacheDelete.js var assocIndexOf = require('./_assocIndexOf'); /** Used for built-in method references. */ var arrayProto = Array.prototype; /** Built-in value references. */ var splice = arrayProto.splice; /** * Removes `key` and its value from the list cache. * * @private * @name delete * @memberOf ListCache * @param {string} key The key of the value to remove. * @returns {boolean} Returns `true` if the entry was removed, else `false`. */ function listCacheDelete(key) { var data = this.__data__, index = assocIndexOf(data, key); if (index < 0) { return false; } var lastIndex = data.length - 1; if (index == lastIndex) { data.pop(); } else { splice.call(data, index, 1); } --this.size; return true; } module.exports = listCacheDelete;