Hello world

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  Haskell98
File hello.hs
main = putStr "Hello world.\n"

-- Haskell98 Hello world program

NB.
putStr :: String -> IO ()
putStrLn :: String -> IO ()
putChar :: Char -> IO ()
File hello02.hs
main = putStr "Hello " >> putStr "World" >> putStrLn "."

-- Another Hello world

NB. The operator >> combines two (or more) IO actions

7/2002.
window on the wide world:

Computer Science Education Week

Linux
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free op. sys.
OpenOffice
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ver 3.4+

The GIMP
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FlashBlock
like it says!

Haskell:
(:) cons
[x1,...] list
[ ]list
(++) append
\ λ :-)
:: has type
Compared

© L. Allison   http://www.allisons.org/ll/   (or as otherwise indicated),
Faculty of Information Technology (Clayton), Monash University, Australia 3800 (6/'05 was School of Computer Science and Software Engineering, Fac. Info. Tech., Monash University,
was Department of Computer Science, Fac. Comp. & Info. Tech., '89 was Department of Computer Science, Fac. Sci., '68-'71 was Department of Information Science, Fac. Sci.)
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