On 6/23/07, Chaddaï Fouché <[EMAIL PROTECTED]> wrote:
isLength1 [x] = "Ok" isLength _ = "Nok"
excellent.
How is [x] big in any way ? If you need to test for more than one element you can just put put a guard with length
Invoking length is more strict than is necessary, though this may not be a problem. If you want a lazier solution, you could try: hasLength 0 [] = True hasLength 0 (_:_) = False hasLength n [] = False hasLength n (_:rest) = hasLength (n - 1) rest This only evaluates at most enough of the list skeleton to verify whether or not it has the right length, where invoking length would evaluate the whole list skeleton. cheers, T. -- Dr Thomas Conway [EMAIL PROTECTED] Silence is the perfectest herald of joy: I were but little happy, if I could say how much. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
