On Oct 11, 2006, at 03:58 , Bulat Ziganshin wrote:
Hello oleg,
Wednesday, October 11, 2006, 6:12:23 AM, you wrote:
Annotate the data type using a GADT:
data MyData a where
MyCon :: MyData a
It helps to reduce confusion about the merits of various features and
additions to Haskell if we use the term GADT exclusively for truly
_generalized_ algebraic data types.
imho, the error was inventing new syntax for GADTs instead of just
adding
type guards to the old one
Well, I think the GADT type definition syntax is the syntax data type
definitions should have had from the start. Too bad we didn't
realize it 15 years ago.
-- Lennart
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