Re: [Haskell-cafe] Code walking off the right edge of the screen

20 Jun 2009


      At Sat, 20 Jun 2009 20:45:16 +0200,
Stephan Friedrichs wrote:
...
If it's a function, you can use guards:
foo :: ...
foo something somethingElse
    | something     -> putStrLn "howdy there!"
    | somethingElse -> putStrLn "howdy ho!"
    | otherwise     -> ...
You can also artificially introduce places to use gaurds inside a function:

foo =
    let x | 1 > 1     = "uh-oh"
          | otherwise = "all is well"
    in x

bar =
    case () of
      _ | 1 > 1     -> "uh-oh"
        | otherwise -> "all is well"

- jeremy

Re: [Haskell-cafe] Code walking off the right edge of the screen

Jeremy Shaw