pathEq.js•1.08 kB
var _curry3 = require('./internal/_curry3');
var equals = require('./equals');
var path = require('./path');
/**
* Determines whether a nested path on an object has a specific value, in
* `R.equals` terms. Most likely used to filter a list.
*
* @func
* @memberOf R
* @since v0.7.0
* @category Relation
* @sig [String] -> * -> {String: *} -> Boolean
* @param {Array} path The path of the nested property to use
* @param {*} val The value to compare the nested property with
* @param {Object} obj The object to check the nested property in
* @return {Boolean} `true` if the value equals the nested object property,
* `false` otherwise.
* @example
*
* var user1 = { address: { zipCode: 90210 } };
* var user2 = { address: { zipCode: 55555 } };
* var user3 = { name: 'Bob' };
* var users = [ user1, user2, user3 ];
* var isFamous = R.pathEq(['address', 'zipCode'], 90210);
* R.filter(isFamous, users); //=> [ user1 ]
*/
module.exports = _curry3(function pathEq(_path, val, obj) {
return equals(path(_path, obj), val);
});