[Haskell-cafe] Re: wxHaskell and do statements

Malcolm Wallace wrote:

mempko writes:

...

Hello, I have a program that just will not compile and I cannot figure out why.

Wrong indentation. Tab stops are 8 spaces in Haskell, but your code seems to assume 6 spaces.

...

------------------------- module Main where

import Graphics.UI.WX

main :: IO () main = start hello

hello :: IO () hello = do f <- frame [text := "Super Window"] lab <- staticText f [text:= "Hello"]

The 'lab <-' actually lines up with 'frame', not with 'f <-' as intended.

Regards, Malcolm

I found that using ';' at the end of expressions helped and also adding a "return()" statement. You were also right that it did not line up, thank you. Now does haskell understand tabs, or does my editor have to convert the tabs to spaces?