[Proposal] Allow default keyword to define empty implementation of void-returning methods

[vadimkantorov]

E.g. void Foo() {} and int Foo() => default; are both currently possible but void Foo() => default; is currently not allowed. I propose to allow this syntax too, mainly for consistency

I'm not sure where to put this kind of suggestion. Please move it to issues or to another category if needed!

[iam3yal]

But then here void Foo() {} you're not returning anything whereas here void Foo() => default; you do so it's not really about consistency because the equivalent is this void Foo() => ; but either way I think that the former is more readable.

[vadimkantorov]

One could imagine "values" of the void type (similar to Unit type in F#) and default standing as a token for that void value in this method definition context. But I'm not extremely well-versed in the current design choices and philosophy of C# regarding the void type, so going to just float this minor proposal around.

[iam3yal]

@vadimkantorov Yes and there are some discussions about it. :)