Should Promise.noise() just return the promise itself?

[nadako]

Given that Noise has from Dynamic so this is possible:

var s:Noise = "not null";

(and thus there's no guarantee that two Noise-typed values are equal)

Shouldn't Promise.noise just return this to save some allocations?

[nadako]

Also I need some clarification about the deprecation of Promise/Future.NULL, e.g. if I have:

var f:Future<String> = if (...) getActualFuture() else Future.NOISE;
f.handle(value -> /* should I check for `null` here? */);

To be honest I'd prefer something that is explicitly specified to resolve to a null, especially given that Noise can be anything because of from Dynamic...

[back2dos]

The code should not compile with null safety, because Future<Noise> is merely Future<Null<String>>.

And yeah, the from Dynamic is new and should probably be given more thought. Probably @:from Dynamic return null would be better.

[nadako]

So does that mean that Noise is/should be specified to be null at run-time? ^^

[back2dos]

Indeed. The whole point was to have only one value. I think :D

[nadako]

Hm, I wonder if it makes sense to have a cached instance of Outcome(Noise) too (for Promise.noise).

[back2dos]

Why not ;)

[kevinresol]

Need this HaxeFoundation/haxe-evolution#10 (comment) ?

[back2dos]

Not necessarily, but it'd be a nice solution :)