On 17 Jan 2010, at 11:44, Andrew Coppin wrote:
Urg, but that's *ugly*. Is there no way I can reduce the amount of indentation to something more reasonable?
main = do putStrLn "Line 1" putStrLn "Line 2"
let xs = do x <- [1..10] y <- [1..10] return (x+y)
print xs
That better?
It's an improvement. It's still not pretty, but I guess that's as good as it's going to get...
Maybe this is an instance of Haskell trying to tell me "if you need to write a 20-line do-block in the middle of your function, you're doing it wrong".
Haskell starts the new indentation level where the following lexeme is (Haskell-98 Report, sec. 2.7). So to reduce indentation, one must start a new line (already mentioned in this thread). This works in Hugs: main = do putStrLn "Line 1" putStrLn "Line 2" let xs = do x <- [1..10] y <- [1..10] return (x+y) print xs The "xs" on a new line looks a bit unusual, and it takes a bit more vertical space, but one gets nice indentation levels. Hans