10 Jul
2013
10 Jul
'13
7:09 p.m.
quoth Andreas Abel
I would doubt that nhc98 would interpret let xs = 0 : xs differently than ghc if it implemented anything close to the Haskell 98 standard.
What I (so vaguely) remember was a compile error, for some reuse of an identifier where GHC permitted it. I suppose you're right, anyway, probably something else - maybe unambiguous nested shadowing? let x = t + 1 in let y = x in let x = y + 1 in x GHC allows this, and of course there's no recursion. Donn