Re: [ghc-steering-committee] #380 GHC2021: Voting starts

El dom, 29 nov 2020 a las 12:12, Simon Marlow () escribió:

On Wed, 25 Nov 2020 at 11:21, Spiwack, Arnaud wrote:

...

## OverloadedX

These extensions can confuse type inference, yielding ambiguous type variables message. And as much as I like them, I don't think it's safe to include them yet. Not until we have a reasonable story for defaulting literals.

OverloadedLabels: no OverloadedLists: no OverloadedStrings: no

For what it's worth, I've been writing code with OverloadedStrings for several years now and in my experience it rarely causes a problem, even for beginners. The context almost always provides enough information to resolve the ambiguity. (admittedly I'm slightly surprised by this too, but experience has convinced me)

I don't have much experience with OverloadedLists, but I'd be prepared to believe that it's a similar story there too.

Adding to this, I think that both OverloadedStrings and OverloadedLists go very well with the idea of overloaded literals story that Haskell already has for numbers. Regards, Alejandro

OverloadedLabels is really a new syntactic form and doesn't fall into the same category as the other two here.

Cheers Simon _______________________________________________ ghc-steering-committee mailing list ghc-steering-committee@haskell.org https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-steering-committee