Re: [Haskell-cafe] Re: Where do I put the seq?

David Leimbach writes:

I'm pretty certain that forcing a pattern match via case is what disallows the laziness to get out of hand. The case statement, when evaluated, must choose a matched pattern branch, even if it's the only possibility, which ends up boiling down to "seq" anyway doesn't it?

Prelude> case undefined of x -> () () So I think you are incorrect: the 'undefined' here isn't evaluated by the case. -k -- If I haven't seen further, it is by standing in the footprints of giants