Dear all,
while WinHugs (20051031) lets me match against an existentially
quantified constructor
data ... = ... | forall b . FMap (b - a) (Mapper s b)
... where FMap qf qc = stripFMap f q
the GHC compiler as well as GHCi (6.4.2 and earlier) issue an error
My brain just exploded.
On 10.05 13:27, Otakar Smrz wrote:
data ... = ... | forall b . FMap (b - a) (Mapper s b)
... where FMap qf qc = stripFMap f q
the GHC compiler as well as GHCi (6.4.2 and earlier) issue an error
My brain just exploded.
I can't handle pattern bindings for
