hasIn.js•854 B
var _curry2 = require('./internal/_curry2');
/**
* Returns whether or not an object or its prototype chain has a property with
* the specified name
*
* @func
* @memberOf R
* @since v0.7.0
* @category Object
* @sig s -> {s: x} -> Boolean
* @param {String} prop The name of the property to check for.
* @param {Object} obj The object to query.
* @return {Boolean} Whether the property exists.
* @example
*
* function Rectangle(width, height) {
* this.width = width;
* this.height = height;
* }
* Rectangle.prototype.area = function() {
* return this.width * this.height;
* };
*
* var square = new Rectangle(2, 2);
* R.hasIn('width', square); //=> true
* R.hasIn('area', square); //=> true
*/
module.exports = _curry2(function hasIn(prop, obj) {
return prop in obj;
});