Literate Haskell with Pandoc (Markdown)

This is Hello.lhs. It uses Markdown.

First, declare module name:

module Main where

Second, define main function:

main :: IO ()

main is of type IO ().

main = do
    putStrLn "Hello, World!"

That's the entire hello world in Haskell. To compile this,

ghc Hello.lhs

To convert this into HTML,

sed -e 's/^> /    /' Hello.lhs | pandoc

KTHXBYE.

This is `Hello.lhs`.
It uses [Markdown](http://daringfireball.net/projects/markdown/).

First, declare module name:

> module Main where

Second, define `main` function:

> main :: IO ()

`main` is of type `IO ()`.

> main = do
>     putStrLn "Hello, World!"

That's the entire hello world in Haskell.
To compile this,

    ghc Hello.lhs

To convert this into HTML,

    sed -e 's/^> /    /' Hello.lhs | pandoc

KTHXBYE.