Q's spread

gistfile1.js

var Q= require("q")

// show time going by
var n= 0
function log(){console.log("..."+(++n))}

// we have to deferreds
var a= Q.defer(),
  b= Q.defer()

Q.spread([a.promise,b.promise],function(a_,b_){
        console.log("done-via-spread",a_,b_)
})
// Expected to work:
//    "And you can use Q.spread directly on an array of promises."
// but calls back immediately, before resolves happen

Q.all([a.promise,b.promise]).spread(function(a_,b_){
        console.log("done-via-all-spread",a_,b_)
})
// Works suitably.
// Is there a shorter way to do this?


// schedule resolves:

process.nextTick(function(){
        log()
        a.resolve("yes")
        log()
})

process.nextTick(function(){
        log()
        b.resolve("yes")
        log()
})

Q should make Q.spread implicitly Q.all the array of arguments. It doesn’t presently. I’ll file an issue if you don’t.