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Haskell
==================
Structure
------------
Haskell programs consist of monads, actions, modules, ???
Basic Syntax
---------------
A "type declaration":
main :: IO ()
An action definition. Note that whitespace matters; the block extends to all
lines indented to the same position as the first non-whitespace after the
``do``:
main = do
stuff1
stuff2
Compilation
------------
By default the "main" action of the "Main" module is the action that is
executed when a compiled haskell program is run by the operating system;
this means that most haskell programs need to define these components.
The `ghc` (Glasgow Haskell Compiler) is the most popular. To compile and
execute a simple one file haskell program you will do something like:
ghc -o hello helloworld.hs
./hello
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