On Monday 23 August 2010 21:02:50, Brandon S Allbery KF8NH wrote:
On 8/23/10 14:56 , Isaac Dupree wrote:
On 08/23/10 02:33, John Smith wrote:
Why doesn't Haskell allow something like this?
fac 0 = 0 1 = 1 x = x * fac (x-1)
This would be clearer than repeating the function name each time, and follow the same pattern as guards and case.
Layout is detected and parsed when and only when it is preceded by 'where', 'let', 'do', or 'of'. So Haskell would have to have some such keyword to
I think the next question is "so how do guards work?"
Not by layout: function :: Int -> Int -> Int -> Bool function x y z | even x = y > z | odd y = even (z-x) | otherwise = even z parses fine. Guards are introduced by the token `|', they need not be aligned, you can have multiple on the same line.