Haskell Beginners 2022 Lecture 4

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=12D4Y2Hdnhg

Lecture 4 about Monads, IO, Haskell packages, Hackage, cabal, and external project dependencies. • Slides: https://slides.com/haskellbeginners20... • Course plan: https://github.com/haskell-beginners-... • Exercises: https://github.com/haskell-beginners-... • 🗞 Subscribe to my newsletter to check the latest news about my courses, books, and big projects: • https://chshersh.com/#subscribe • Chapters • 0:00 - Preparation • 1:34 - Intro • 1:59 - andThen for Maybe • 6:17 - andThen for Either • 8:11 - andThen for List • 11:16 - Common pattern for andThen • 14:11 - Monad • 21:03 - Monad instances (Maybe, Either, List) • 23:20 - Monad laws • 25:25 - Using monads • 31:05 - Monad implementation details in Haskell • 33:30 - Purity • 41:00 - IO • 46:37 - Running IO in GHCi • 48:39 - main • 50:53 - Then operator • 52:46 - do-notation • 57:38 - Cabal • 1:00:22 - Main best-practices • 1:01:20 - External dependencies • 1:03:43 - Functional Core, Imperative Shell • 1:08:11 - QA

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