StricterLabelledFieldSyntax
Isaac Dupree
ml at isaac.cedarswampstudios.org
Sat Jul 25 21:45:18 EDT 2009
Ian Lynagh wrote:
> Hi all,
>
> I've made a ticket and proposal page for making the labelled field
> syntax stricter, e.g. making this illegal:
>
> data A = A {x :: Int}
>
> y :: Maybe A
> y = Just A {x = 5}
>
> and requiring this instead:
>
> data A = A {x :: Int}
>
> y :: Maybe A
> y = Just (A {x = 5})
and, as currently, "(f some expression) {x=5}" still requires those
parentheses also? Although depending on the surroundings, after this
proposal, it might need to become "((f some expression) {x=5})"
-Isaac
More information about the Haskell-prime
mailing list