Hi! Is there a way to do `parMapNotNull { }`?

# arrow

[dave08]

Hi! Is there a way to do parMapNotNull { }?

[raulraja]

Hi @dave08 there isn't right now, you'd have to use parMap { ... }.filterNotNull() but I think it's reasonable to suggest we add it.
I added this after I read your message for discussion https://github.com/arrow-kt/arrow/pull/3110

[raulraja]

Also added:

We should probably consider what other extensions from Iterable can offer par variants. I guess many can be achieved through parTraverse, but that name is not idiomatic to what Kotlin users are used to in the Iterable extensions.

[dave08]

Thanks for creating the issue! I was also thinking of some kind of combination between parMap { parZip { } } (maybe that's parTraverse?) that allows running concurrent functions to build list elements concurrently...

[dave08]

(or should I just use parMap { parZip { } }, will that be problematic to nest them?)

[raulraja]

I don't think there will be an issue nesting those, if there is that would be a bug.

[raulraja]

parTraverse is what we call now parMap it used to be called parTraverse and is now deprecated.