Chapter 0
The identity function. The beginning of everything.
Chapter I
monster :: Monad m => m Chaos -> m Order
In the beginning was the type. Before implementation, before runtime, before the machine breathed life into logic — there was the promise. A contract written in pure abstraction, binding chaos to order through the sacred covenant of the type signature.
Chapter II
return :: a -> m a
(>>=) :: m a -> (a -> m b) -> m b
They said you would never understand monads. They were wrong. A monad is simply a monoid in the category of endofunctors. What's the problem? The problem is that understanding requires surrender — a willingness to let abstraction wash over you like a tide of pure lambda.
Chapter III
fibs = 0 : 1 : zipWith (+) fibs (tail fibs)
Haskell does not compute what it does not need. An infinite list exists in potential, never in actuality — until the moment of observation collapses possibility into value. The monster sleeps until summoned. Lazy evaluation is not indolence. It is wisdom.
Chapter ∞
main :: IO ()
main = forever $ do
thought <- getLine
putStrLn (transform thought)
The grimoire never closes. Every function you write is a spell. Every type is an incantation. The monster — Haskell — waits patiently in the lambda calculus, ready to devour imperative thinking and transmute it into something pure.
haskell.monster — a grimoire of functional programming