json-q
Version:
Retrieves values from JSON objects (and JavaScript objects) by css-selector-like query (includes attribute filters and array flattening).
17 lines (14 loc) • 403 B
JavaScript
var assocIndexOf = require('./_assocIndexOf');
/**
* Checks if a list cache value for `key` exists.
*
* @private
* @name has
* @memberOf ListCache
* @param {string} key The key of the entry to check.
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
*/
function listCacheHas(key) {
return assocIndexOf(this.__data__, key) > -1;
}
module.exports = listCacheHas;