There's no arrow eval for suspending functions (sometimes those are the heavier computation that nee...

# arrow

[dave08]

There's no arrow eval for suspending functions (sometimes those are the heavier computation that need to be done later...)?

[Alejandro Serrano.Mena]

isn't Eval.later enough here? https://arrow-kt.io/learn/collections-functions/eval/

[dave08]

How would this help? Doesn't it create this behind the scenes:

data class Later<out A>(f: () -> A) : Eval<A> , Lazy<A>

where f isn't suspending?

[Alejandro Serrano.Mena]

oh, now I understand, you literally mean a suspend function!

[dave08]

I guess there's a reason why they don't support them?

[Alejandro Serrano.Mena]

we just didn't implement them, but it's possible to do it in the same way that was done for arrow-collectors

[Alejandro Serrano.Mena]

I'll prepare a PR tonight

[dave08]

It's nice to have since the Eval.later could always be a regular by lazy { } in a lot of cases, but Eval could be the first to support suspend funs... maybe even having val suspendFoo by Eval.coLazy { } or something similar, which could cover such cases too...

[Alejandro Serrano.Mena]

here is a PR bringing this https://github.com/arrow-kt/arrow/pull/3595