Max Bolingbroke
I tried to find anything about lambda-if in there, but failed (Trac and I aren't on very friendly terms, so it's probably my fault). Is there more information about the rationale and use cases for this?
Prelude> (if then "Haskell" else "Cafe") False "Cafe"
Presumably, this extends to
Prelude> (if False then else "Cafe") "Haskell" "Cafe"
and
Prelude> (if then "Haskell" else) False "Cafe" "Cafe"
as well? My gut reaction is that this doesn't buy a whole lot, and that it is verbose and not very readable. Any examples where this is a win?
Prelude> (case of 1 -> "One"; _ -> "Not-one") 1 "One" Prelude> :q
"case of" looks a bit weird, but I like the points brought up about avoiding to name a one-use variable (e.g., getArgs >>= case of ...) AFACS, this isn't easily implemented in Haskell either. -k -- If I haven't seen further, it is by standing in the footprints of giants