Functional Programming Crash Course for Scala Beginners

A comprehensive introduction to functional programming in Scala, covering immutability, lambdas, monads, and effect libraries like ZIO and Cats Effect.

FP in Scala in one video: immutability, lambdas, monads, tagless-final (TF), effect types and effect type libraries like monix, cats-effect and ZIO. It's a crash so we will move fast and won't dive into recursion this time since it's rarely used in production applications. This is a follow-up to this video, which is for experienced Scala devs: youtu.be/RaQnGCGmWI4 Watch my videos before everyone else! youtube.com/channel/UCSBUwLT9zXhUalKfJrc2q2A/join The code is here: github.com/devinsideyou/fp Table of Contents: 00:00:00 Intro 00:03:09 What is FP? 00:04:38 Project Setup 00:07:59 v01 - Initial commit - mutable and immutable bank account 00:11:43 v02 - val _ 00:13:17 v03 - no intermediate state 00:16:22 v04 - tap 00:20:21 v05 - scala.util.chaining 00:20:51 v06 - IMPORTANT | simple mutability challenges 00:27:47 v07 - simple mutability challenges for bank accounts 00:32:17 v08 - pipe 00:33:13 v09 - IMPORTANT | descriptions of programs 00:41:03 v10 - solving the println problem 00:42:20 v11 - getting closer to solving the BankAccount problem 00:42:57 v12 - solving the BankAccount problem 00:45:44 v13 - IMPORTANT | FPApp 00:48:20 v14 - Refactoring 00:49:08 v15 - IMPORTANT | path to Monads - Part 1 00:52:04 v16 - path to Monads - Part 2 00:53:30 v17 - path to Monads - Part 3 00:53:56 v18 - path to Monads - Part 4 00:54:47 v19 - path to Monads - Part 5 00:55:43 v20 - path to Monads - Part 6 00:57:26 v21 - path to Monads - Part 7 00:57:36 v22 - path to Monads - Part 8 00:58:31 v23 - path to Monads - Part 9 00:59:27 v24 - path to Monads - Part 10 01:00:00 v25 - path to Monads - Part 11 01:01:58 v26 - mutable state must be delayed 01:04:15 v27 - fp hello world 01:05:04 v28 - IMPORTANT | path to Tagless-Final - Part 1 01:12:44 v29 - path to Tagless-Final - Part 2 01:17:56 v30 - path to Tagless-Final - Part 3 01:18:36 v31 - path to Tagless-Final - Part 4 01:20:18 v33 - lib-examples 01:23:18 - TF vs monix | cats-effect | ZIO Website: devinsideyou.com Patreon: patreon.devinsideyou.com Discord: discord.devinsideyou.com Telegram: telegram.devinsideyou.com Twitter: twitter.devinsideyou.com GitHub: github.devinsideyou.com LBRY: lbry.devinsideyou.com Install scripts: install.devinsideyou.com Giter8 templates: g8.devinsideyou.com Spotify concentration playlist: code.radio.devinsideyou.com Cheers and Happy Coding! #scala #functionalprogramming #monad