Q sequence

Q_sequence.js

var result = Q();

func.push(function(){
    var d = Q.defer();
    d.resolve('a');
    return d.promise;
});

func.push(function(){
    console.log(arguments);
    var d = Q.defer();
    d.resolve('b');
    return d.promise;
});

func.push(function(){
    console.log(arguments);
    var d = Q.defer();
    d.resolve('c');
    return d.promise;
});

func.forEach(function(f){
   result = result.then(f);
});