Q.all with array map

arrayReduce

return array.reduce(function(p, item) {
           return p.then(function(){ return readFile(item); });
       },Q());

qAllArrayMap

Q.all(array.map(function (item) {
    return doSomething(item); //function that returns promise
}))
    .then(function (resolves) {
        connection.response.items = resolves;
        deferred.resolve();
    })
    .catch(function (err) {
        deferred.reject(err);
    })
    ;

qAllArrayMapBindThis

Q.all(array.map(function (item) {
    return doSomething.bind(this, item); //use bind this to run function in Q.ll insted of the map function
}))
    .then(function (resolves) {
        connection.response.items = resolves;
        deferred.resolve();
    })
    .catch(function (err) {
        deferred.reject(err);
    })
    ;