/**
 * 
 * @authors yutent (yutent@doui.cc)
 * @date    2017-02-27 18:02:56
 *
 */

"use strict";


// 对象合并
if(!Object.prototype.merge){
    Object.defineProperty(Object.prototype,
        'merge',
        {
            value: function(){
                let args = Array.from(arguments)
                if(args.length < 1 || typeof args[0] !== 'object')
                    return this
                args.unshift(this)

                Object.assign.apply(null, args)
                return this
            },
            enumerable: false,
            writable: true
        })
}



/**
 * [ 判断对象/数组是否为空]
 * eg.
 * Object.empty(obj/arr)
 */
if(!Object.empty){
    Object.defineProperty(Object,
        'empty',
        {
            value: function(obj){
                try{
                    for(let i in obj){
                        return false
                    }
                }catch(e){}
                return true
            },
            enumerable: false
        })
}