For those of you that have seen and reviewed < simon vergauw kotlinlang #arrow-contributors

For those of you that have seen and reviewed @simon.vergauwen work in the suspend library over the last 4 weeks introducing suspend without IO and the same power please show your approval or comments here today. This is going in today to get a snapshot ready for Kotliners. https://github.com/arrow-kt/arrow-fx/pull/169

:arrow: 9

👏 7

😍 8

PhBastiani

06/04/2020, 12:41 PM

More concise, ...., More idiomatic 👌

Is there use cases where we cannot use the new suspend DSL ?

simon.vergauwen

06/04/2020, 1:03 PM

No, you can use it everywhere and it exposes no unsafe APIs

Similar to what you’d expect from

IO

expect for the wrapping

raulraja

06/04/2020, 1:46 PM

Essentially eliminates the need for IO and transformers like EitherT

PhBastiani

06/05/2020, 2:51 PM

Due to a professional meeting, I could not attend Kotliners. Hopefully the videos will be online soon... So, I ask a question here: if i've this API

MyClass<F> : Async<F> {
fun <A> myfun(use: suspend MonadThrowSyntax<F>.(MyDataClass) -> A): Kind<F, A> = fx. ...
}

If I understood correctly, with the new DSL, I can write

MyClass {}
suspend fun <A> MyClass.myfun(use: suspend (MyDataClass) -> A): A = ...
or
suspend fun <A> MyClass.myfun(use: suspend (MyDataClass) -> A): Either<MyError, A> = ...
}

Exact ?

simon.vergauwen

06/05/2020, 3:14 PM

Yes, that’s 100% correct

Have you checked the

README

in the PR? It covers most of these topics there

Otherwise feel free to ask more questions here, the idea is that that

README

will become the

Quick start

section for the library. So all information you think is missing I’d love to know, so I can write it down for future reference when working on the docs 😉

PhBastiani

06/05/2020, 3:18 PM

Thx

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