Haskell

• Type Systems re Haskell

Videos

• Functional Programming in Haskell
• Advanced Functional Programming in Haskell
• Haskell For Imperative Programmers

Problems

• 99 Problems

Monads

• All About Monads
• Tackling the Awkward Squad: monadic input/output, concurrency, exceptions, and foreign-language calls in Haskell

Internals

• Alexis King - “Effects for Less” @ ZuriHac 2020(content is just madd) , GHC proposal link
• GHC Reading List
• @lexi_lambda: The GHC optimization pipeline
• @lexi_lambda: GHC Simplifier basics
• @rae's Thoughts on Haskell(playlist with some advanced topics)
• GHC internals by Stephen Diehl(series of posts)