pickBy.js•913 B
var _curry2 = require('./internal/_curry2');
/**
* Returns a partial copy of an object containing only the keys that satisfy
* the supplied predicate.
*
* @func
* @memberOf R
* @since v0.8.0
* @category Object
* @sig (v, k -> Boolean) -> {k: v} -> {k: v}
* @param {Function} pred A predicate to determine whether or not a key
* should be included on the output object.
* @param {Object} obj The object to copy from
* @return {Object} A new object with only properties that satisfy `pred`
* on it.
* @see R.pick, R.filter
* @example
*
* var isUpperCase = (val, key) => key.toUpperCase() === key;
* R.pickBy(isUpperCase, {a: 1, b: 2, A: 3, B: 4}); //=> {A: 3, B: 4}
*/
module.exports = _curry2(function pickBy(test, obj) {
var result = {};
for (var prop in obj) {
if (test(obj[prop], prop, obj)) {
result[prop] = obj[prop];
}
}
return result;
});