haskell.quest
Where every function is a promise kept. Where types tell stories. Where elegance compiles.
The Type Gallery
Maybe a → (a → b) → Maybe b(a → b) → f a → f bm a → (a → m b) → m b(r → a) → Reader r aThe optional jewel. A possibility clasped in gold, either present with ceremony or absent with impeccable manners.
The functor cut. A transformation lifted without touching the vessel, like polishing a stone without opening the case.
The monadic hinge. A sequence of promises joined so precisely that cause and consequence share one seam.
The reader's lens. An environment carried quietly through the salon, consulted without ever being announced.
The Circuit Alcove
The Monad Showcase
A door in the lacquered wall: the world enters, and Haskell records the encounter with ritual precision.
A closed loop mechanism, turning the same hidden crown from one immaculate tick to the next.
A private atmosphere: context diffused through every calculation without disturbing the glass.
A ledger of golden dust, accumulating beside the value as evidence of its passage.
The velvet tray that may hold a gem, or may hold only the perfect outline of one.
The Compiler's Forge
-- a small combinator, cut like a watch jewel
newtype Parser a = Parser { runParser :: String → Maybe (a, String) }
bind :: Parser a → (a → Parser b) → Parser b
bind p f = Parser $ \input →
case runParser p input of
Nothing → Nothing
Just (a, rest) → runParser (f a) restElegance is a type error you haven't made.