dojo.doLater: add optional decay param

[Les]

The code below could have some problems, but I was trying to add an optional decay parameter as an enhancement.

dojo.doLater = function(/*anything*/conditional,/*Object ?*/context, /* Number ? */interval, /* Number ? */decay){
	if(conditional){ return false; }  // Boolean
	var callback = dojo.doLater.caller,
			args = dojo.doLater.caller.arguments;

        decay = decay || 1;
        interval = interval || 100;
	interval = callback._decay ? interval * callback._decay : interval;
	context = context || window;
        callback._decay = callback._decay ? callback._decay * decay : decay;
   
	setTimeout(function(){
		callback.apply(context, args);
	},interval);
	return true; // Boolean
}

var test = false;

function func() {
   return dojo.doLater(test, this, 1000, 1.2);
}

[Mike Wilcox]

(In [16619]) Fixes #8596 - Added Adam's decay parameter to slow (or speed up) the polling.

[Les]

I just faxed in the CLA.

[Mike Wilcox]

After some consideration, I'm going to not apply this patch - at least not for the time being.

doLater is actually designed to be very basic. It's for prototyping, and for beginners who don't want to wrestle with deferreds and an advanced connection policy. For example, I'm using it in the first version of FLAudio, but plan to factor it out for something that fires immediately when the object is available.

So let's see how this works for the time being, and maybe we'll find the patch is necessary.

And Les, I'm glad this got you to file a CLA! It will be useful.

[Adam Peller]

Mike, you may want to consider at least a timeout arg, though (next release, perhaps) maybe with a default. Otherwise, you could imagine a lot of runaway timers.