By: Paul

Paul — Sun, 13 Dec 2009 21:51:48 +0000

A nanagram of “Almond Mince” :)

By: Alistair Robinson

Alistair Robinson — Thu, 10 Dec 2009 12:10:42 +0000

“Command line”? What’s that?

Paul — Thu, 10 Dec 2009 11:14:38 +0000

Haskell is definitely scary, but good scary! Then again, life is short.

First install the Glorious Glasgow Haskell Compiler via http://www.haskell.org, create a hello.hs text file, and put this in it:

main = putStrLn "Hello, World!"

Then from the command line:

> ghci hello.hs
*Main>hello
Hello World!
*Main>:q

For more flexibility try this in hello2.hs

import System.Environment
-- n.b. Spacing: the p should be beneath the [
main = do [arg1,arg2] <- getArgs
putStrLn (arg1 ++ " " ++ arg2)

Then type:

> ghc --make hello2.hs
> ./hello2 Hello Planet!
Hello Planet!

ghc is GHC’s exe name; ghci is GHC’s interactive environment.

Check out the videos. Simon Peyton Jones gives a good introduction.
http://www.haskell.org/haskellwiki/Video_presentations

Paul