The Haskell Programming Language
- Your first Haskell Program
- stack vs cabal
- hackage vs stackage
- base vs preludes
- tuples
- lists
- Text, ByteString, and String
- Maybe and Either (Maybe is Either)
- map vs fmap
- prefix, infix, and making one the other
- type vs newtype vs data
- classes and instances
- Using pragmas (-XOverloadedStrings, etc)
ghci
- starting ghci
- importing modules (:m)
- checking types (:t)
- Control.Applicative
- zipping and unzipping lists
Recursion
- fold, scan
- Foldable
Classes
- Functor
- Foldable
- Traversable
Concurrency
Lenses
Bananas, Lenses,. Envelopes and Barbed Wire
recursion schemes
- hylo/cata/etc morphisms
Misc
- Phantom Types
- ADTs/GADTs
- Parser Combinators
Cool Haskell Programs
- Semantic
- Parsing, analyzing, and comparing source code across many languages
- Pandoc
- a universal document converter
- Hasura
- Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.
- Clash
- A modern, functional, hardware description language
Useful Tools
- Hoogle
- Hoogle is a Haskell API search engine, which allows you to search the Haskell libraries on Stackage by either function name, or by approximate type signature.
- Hayoo
- Hayoo: The Hayoo! search engine for Haskell API search on hackage
- Hackage and Stackage
- Haskell reverse dependency package search
- Find out if the hackage package you want to use is widely used or not