Re: [Haskell-beginners] Why does this list comprehension return an empty list?

On Wed, Jul 24, 2013 at 7:47 AM, Kim-Ee Yeoh wrote:

Try: [(a,b) | a <- f xs | b <- g xs]

Oops, that'll only work if you define g xs = [[]], not []. So yes, you've basically got a zip. -- Kim-Ee