This is a collection of Scala utility libraries you can and should use in almost any Scala project. You really should know about them especially if you are new to Scala. Watch my videos before everyone else! null Make sure to check out the links from our sponsors: Scala Jobs: https://scalajobs.com/ Rust Jobs: https://rustjobs.dev/ The code from the demo is here: https://github.com/DevInsideYou/duck Libraries and compiler plugins in the order presented: cats: https://github.com/typelevel/cats refined: https://github.com/fthomas/refined iron: https://github.com/Iltotore/iron chimney: https://github.com/scalalandio/chimney ducktape: https://github.com/arainko/ducktape scala-newtype: https://github.com/estatico/scala-newtype opaque type aliases in Scala3: https://dotty.epfl.ch/docs/reference/other-new-features/opaques.html legacy AnyVal class in Scala2: https://docs.scala-lang.org/overviews/core/value-classes.html monocle: https://github.com/optics-dev/Monocle quicklens: https://github.com/softwaremill/quicklens enumeratum: https://github.com/lloydmeta/enumeratum enums in Scala3: https://docs.scala-lang.org/scala3/reference/enums/enums.html derevo: https://github.com/tofu-tf/derevo typeclass derivation in Scala3: https://docs.scala-lang.org/scala3/reference/contextual/derivation.html macwire: https://github.com/softwaremill/macwire jam: https://github.com/yakivy/jam context-applied: https://github.com/augustjune/context-applied PPrint: https://github.com/com-lihaoyi/PPrint spells: https://github.com/agilesteel/spells sbt-thank-you-stars: https://github.com/ocadaruma/sbt-thank-you-stars Libraries and compiler plugins I've forgotten to mention: better-monadic-for: https://github.com/oleg-py/better-monadic-for kind-projector: https://github.com/typelevel/kind-projector 00:00 Intro 01:25 The Scala Language Itself 01:36 The Scala Standard Library 01:50 cats-core 02:29 refined 02:52 iron 03:14 chimney 04:00 ducktape 04:28 scala-newtype / AnyVal / Opaque Type Aliases 05:12 monocle / quicklens 06:10 enumeratum 06:48 derevo / derives / typeclasses / polymorphism 09:09 macwire / jam 09:43 context-applied 10:21 PPrint 10:42 spells 12:00 sbt-thank-you-stars 12:24 demo 16:38 Outro Website: https://devinsideyou.com/ Patreon: https://patreon.devinsideyou.com/ Discord: https://discord.devinsideyou.com/ Telegram: https://telegram.devinsideyou.com/ Twitter: https://twitter.devinsideyou.com/ GitHub: https://github.devinsideyou.com/ LBRY: https://lbry.devinsideyou.com/ Install scripts: https://install.devinsideyou.com/ Giter8 templates: https://g8.devinsideyou.com/ Spotify concentration playlist: https://code.radio.devinsideyou.com/ Cheers and Happy Coding! #Scala #Libraries #libs