Creighton Hogg <[EMAIL PROTECTED]> writes: > data Patootie = Pa Int | Tootie Int > and I want to pull out the indices of all elements of a list > that have type constructor Tootie, how would I do that?
x = [Pa 3, Tootie 5, Pa 7, Tootie 9, Pa 11] y = [ i | Tootie i <- x ] z = [ i | i@(Tootie _) <- x ] y or z might be helpful. -- Mark _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
