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Promise = function() {
	this.check = [];
	this.resolved = false;
};

Promise.prototype = {
		success: function(callback){
			if (this.resolved) {
				callback(this.results);
			} else {
				this.check.push(callback);
			}
		},
		resolve: function(result){
			if(this.resolved) { 
				throw new Error('promise resolved');
			}
			this.results = result;
			for (var i = 0; i < this.check.length; i++) {
				this.check[i](result);
			}
			this.resolved = true;
		}
};

var foo = new Promise(),
		bar = new Promise();

foo.resolve('hello');

setTimeout(function(){
	bar.resolve('world');
}, 500);

foo.success(function(result){
	console.log(result);
});

bar.success(function(result){
	console.log(result);
});

setTimeout(function() {
	bar.resolve('world');
}, 500);

setTimeout(function() {
	var far = new Promise();
	far.success(function(result) {
		console.log(result);
	});
	far.success(function(result) {
		console.log(result + ' 1');
	});
	far.resolve('weeee');
}, 500);