https://learn-scala.polyvariant.org/Recent content on Learn ScalaHugoenhttps://learn-scala.polyvariant.org/blogs/Mon, 01 Jan 0001 00:00:00 +0000https://learn-scala.polyvariant.org/blogs/<ul> <li>Softwaremill <ul> <li>Scala Times newsletter <a href="https://scalatimes.com/" class="external-link" target="_blank" rel="noopener">https://scalatimes.com/</a></li> <li>Blog <a href="https://softwaremill.com/blog/" class="external-link" target="_blank" rel="noopener">https://softwaremill.com/blog/</a></li> </ul> </li> <li>Petr Zapletal <ul> <li><a href="https://petr-zapletal.medium.com/" class="external-link" target="_blank" rel="noopener">https://petr-zapletal.medium.com/</a></li> </ul> </li> <li>Salar Rahmanian <ul> <li>Scala news <a href="https://www.scalanews.net/" class="external-link" target="_blank" rel="noopener">https://www.scalanews.net/</a></li> </ul> </li> <li>Daniel Ciocîrlan <ul> <li><a href="https://www.youtube.com/@rockthejvm/videos" class="external-link" target="_blank" rel="noopener">https://www.youtube.com/@rockthejvm/videos</a></li> <li><a href="https://blog.rockthejvm.com/" class="external-link" target="_blank" rel="noopener">https://blog.rockthejvm.com/</a></li> </ul> </li> <li>Jakub Kozłowski <ul> <li><a href="https://www.youtube.com/@kubukoz/videos" class="external-link" target="_blank" rel="noopener">https://www.youtube.com/@kubukoz/videos</a></li> <li><a href="https://blog.kubukoz.com/" class="external-link" target="_blank" rel="noopener">https://blog.kubukoz.com/</a></li> </ul> </li> <li>Dev inside you <ul> <li><a href="https://www.youtube.com/@DevInsideYou/videos" class="external-link" target="_blank" rel="noopener">https://www.youtube.com/@DevInsideYou/videos</a></li> <li><a href="https://devinsideyou.com/" class="external-link" target="_blank" rel="noopener">https://devinsideyou.com/</a></li> </ul> </li> <li>Li Haoyi <ul> <li><a href="https://www.lihaoyi.com/" class="external-link" target="_blank" rel="noopener">https://www.lihaoyi.com/</a></li> </ul> </li> <li>Michał Pawlik <ul> <li><a href="https://blog.michalp.net/" class="external-link" target="_blank" rel="noopener">https://blog.michalp.net/</a></li> </ul> </li> </ul>https://learn-scala.polyvariant.org/language-aspects/Mon, 01 Jan 0001 00:00:00 +0000https://learn-scala.polyvariant.org/language-aspects/<h3 id="type-system-hierarchy"> Type system hierarchy <a class="heading-link" href="#type-system-hierarchy"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://docs.scala-lang.org/tour/unified-types.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/tour/unified-types.html</a></li> <li><a href="https://www.artima.com/scalazine/articles/scalas_type_system.html" class="external-link" target="_blank" rel="noopener">https://www.artima.com/scalazine/articles/scalas_type_system.html</a></li> </ul> <h3 id="case-classes"> Case classes <a class="heading-link" href="#case-classes"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://docs.scala-lang.org/tour/case-classes.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/tour/case-classes.html</a></li> <li><a href="https://docs.scala-lang.org/overviews/scala-book/case-classes.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/overviews/scala-book/case-classes.html</a></li> </ul> <h3 id="traits"> Traits <a class="heading-link" href="#traits"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://docs.scala-lang.org/tour/traits.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/tour/traits.html</a></li> <li><a href="https://docs.scala-lang.org/overviews/scala-book/traits-interfaces.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/overviews/scala-book/traits-interfaces.html</a></li> </ul> <h3 id="pattern-matching"> Pattern matching <a class="heading-link" href="#pattern-matching"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://docs.scala-lang.org/tour/pattern-matching.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/tour/pattern-matching.html</a></li> <li><a href="https://alvinalexander.com/scala/how-to-use-pattern-matching-scala-match-case-expressions/" class="external-link" target="_blank" rel="noopener">https://alvinalexander.com/scala/how-to-use-pattern-matching-scala-match-case-expressions/</a></li> <li><a href="https://data-flair.training/blogs/scala-pattern-matching/" class="external-link" target="_blank" rel="noopener">https://data-flair.training/blogs/scala-pattern-matching/</a></li> </ul> <h3 id="option-and-either"> Option and Either <a class="heading-link" href="#option-and-either"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://xebia.com/blog/try-option-or-either/" class="external-link" target="_blank" rel="noopener">https://xebia.com/blog/try-option-or-either/</a></li> <li><a href="https://alvinalexander.com/scala/best-practice-eliminate-null-values-from-code-scala-idioms/" class="external-link" target="_blank" rel="noopener">https://alvinalexander.com/scala/best-practice-eliminate-null-values-from-code-scala-idioms/</a></li> <li><a href="https://danielwestheide.com/blog/the-neophytes-guide-to-scala-part-7-the-either-type/" class="external-link" target="_blank" rel="noopener">https://danielwestheide.com/blog/the-neophytes-guide-to-scala-part-7-the-either-type/</a></li> </ul> <h3 id="collections-for-comprehension"> Collections, for comprehension <a class="heading-link" href="#collections-for-comprehension"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://docs.scala-lang.org/overviews/scala-book/collections-101.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/overviews/scala-book/collections-101.html</a></li> <li><a href="https://docs.scala-lang.org/tour/for-comprehensions.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/tour/for-comprehensions.html</a></li> </ul> <h3 id="implicits"> Implicits <a class="heading-link" href="#implicits"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://www.artima.com/pins1ed/implicit-conversions-and-parameters.html" class="external-link" target="_blank" rel="noopener">https://www.artima.com/pins1ed/implicit-conversions-and-parameters.html</a></li> <li><a href="https://www.lihaoyi.com/post/ImplicitDesignPatternsinScala.html" class="external-link" target="_blank" rel="noopener">https://www.lihaoyi.com/post/ImplicitDesignPatternsinScala.html</a></li> <li><a href="https://scala-fmi.github.io/scala-fmi-2019/lectures/08-implicits.html" class="external-link" target="_blank" rel="noopener">https://scala-fmi.github.io/scala-fmi-2019/lectures/08-implicits.html</a></li> <li><a href="https://apiumhub.com/tech-blog-barcelona/scala-implicits/" class="external-link" target="_blank" rel="noopener">https://apiumhub.com/tech-blog-barcelona/scala-implicits/</a></li> </ul> <h3 id="future---asynchronous-and-parallel-operations"> Future - asynchronous and parallel operations <a class="heading-link" href="#future---asynchronous-and-parallel-operations"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://docs.scala-lang.org/overviews/scala-book/futures.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/overviews/scala-book/futures.html</a></li> <li><a href="https://docs.scala-lang.org/overviews/core/futures.html" class="external-link" target="_blank" rel="noopener">https://docs.scala-lang.org/overviews/core/futures.html</a></li> <li><a href="https://danielwestheide.com/blog/the-neophytes-guide-to-scala-part-8-welcome-to-the-future/" class="external-link" target="_blank" rel="noopener">https://danielwestheide.com/blog/the-neophytes-guide-to-scala-part-8-welcome-to-the-future/</a></li> </ul>https://learn-scala.polyvariant.org/libraries/Mon, 01 Jan 0001 00:00:00 +0000https://learn-scala.polyvariant.org/libraries/<h3 id="databases"> Databases <a class="heading-link" href="#databases"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <h4 id="slick"> Slick <a class="heading-link" href="#slick"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://scala-slick.org/doc/3.3.1/introduction.html" class="external-link" target="_blank" rel="noopener">https://scala-slick.org/doc/3.3.1/introduction.html</a></li> <li><a href="https://books.underscore.io/essential-slick/essential-slick-3.html" class="external-link" target="_blank" rel="noopener">https://books.underscore.io/essential-slick/essential-slick-3.html</a></li> </ul> <h4 id="doobie"> Doobie <a class="heading-link" href="#doobie"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://tpolecat.github.io/doobie/" class="external-link" target="_blank" rel="noopener">https://tpolecat.github.io/doobie/</a></li> </ul> <h4 id="quill"> Quill <a class="heading-link" href="#quill"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://getquill.io/" class="external-link" target="_blank" rel="noopener">https://getquill.io/</a></li> <li><a href="https://zio.dev/zio-quill/" class="external-link" target="_blank" rel="noopener">https://zio.dev/zio-quill/</a></li> <li><a href="https://github.com/zio/zio-protoquill" class="external-link" target="_blank" rel="noopener">https://github.com/zio/zio-protoquill</a></li> </ul> <h3 id="working-with-json"> Working with Json <a class="heading-link" href="#working-with-json"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <h4 id="circe"> Circe <a class="heading-link" href="#circe"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://circe.github.io/circe/" class="external-link" target="_blank" rel="noopener">https://circe.github.io/circe/</a></li> </ul> <h4 id="jsoniter-scala"> Jsoniter Scala <a class="heading-link" href="#jsoniter-scala"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://github.com/plokhotnyuk/jsoniter-scala" class="external-link" target="_blank" rel="noopener">https://github.com/plokhotnyuk/jsoniter-scala</a></li> <li><a href="https://blog.lambdaspot.dev/the-fastest-and-safest-json-parser-and-serializer-for-scala" class="external-link" target="_blank" rel="noopener">https://blog.lambdaspot.dev/the-fastest-and-safest-json-parser-and-serializer-for-scala</a></li> </ul> <h3 id="io"> IO <a class="heading-link" href="#io"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://typelevel.org/cats-effect/datatypes/io.html" class="external-link" target="_blank" rel="noopener">https://typelevel.org/cats-effect/datatypes/io.html</a></li> <li><a href="https://typelevel.org/blog/2017/05/02/io-monad-for-cats.html" class="external-link" target="_blank" rel="noopener">https://typelevel.org/blog/2017/05/02/io-monad-for-cats.html</a></li> <li><a href="https://medium.com/walmartlabs/understanding-io-monad-in-scala-b495ca572174" class="external-link" target="_blank" rel="noopener">https://medium.com/walmartlabs/understanding-io-monad-in-scala-b495ca572174</a></li> </ul> <h3 id="zio"> ZIO <a class="heading-link" href="#zio"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://zio.dev/" class="external-link" target="_blank" rel="noopener">https://zio.dev/</a></li> </ul> <h3 id="monix"> Monix <a class="heading-link" href="#monix"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://monix.io/" class="external-link" target="_blank" rel="noopener">https://monix.io/</a></li> </ul> <h3 id="messaging"> Messaging <a class="heading-link" href="#messaging"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <h4 id="pass4s"> pass4s <a class="heading-link" href="#pass4s"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://ocadotechnology.github.io/pass4s/" class="external-link" target="_blank" rel="noopener">https://ocadotechnology.github.io/pass4s/</a></li> <li><a href="https://blog.michalp.net/posts/scala/pass4s-basics/" class="external-link" target="_blank" rel="noopener">https://blog.michalp.net/posts/scala/pass4s-basics/</a></li> </ul> <h3 id="type-classes"> Type classes <a class="heading-link" href="#type-classes"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://tpolecat.github.io/2013/10/12/typeclass.html" class="external-link" target="_blank" rel="noopener">https://tpolecat.github.io/2013/10/12/typeclass.html</a></li> <li><a href="https://scalac.io/typeclasses-in-scala/" class="external-link" target="_blank" rel="noopener">https://scalac.io/typeclasses-in-scala/</a></li> <li><a href="https://www.scala-exercises.org/scala_tutorial/type_classes" class="external-link" target="_blank" rel="noopener">https://www.scala-exercises.org/scala_tutorial/type_classes</a></li> </ul> <h3 id="cats"> Cats <a class="heading-link" href="#cats"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://underscore.io/books/scala-with-cats/" class="external-link" target="_blank" rel="noopener">https://underscore.io/books/scala-with-cats/</a></li> <li><a href="https://typelevel.org/cats/" class="external-link" target="_blank" rel="noopener">https://typelevel.org/cats/</a></li> <li><a href="https://www.scala-exercises.org/cats/semigroup" class="external-link" target="_blank" rel="noopener">https://www.scala-exercises.org/cats/semigroup</a></li> </ul> <h3 id="higher-kinded-types"> Higher-kinded types <a class="heading-link" href="#higher-kinded-types"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://medium.com/bigpanda-engineering/understanding-f-in-scala-4bec5996761f" class="external-link" target="_blank" rel="noopener">https://medium.com/bigpanda-engineering/understanding-f-in-scala-4bec5996761f</a></li> <li><a href="https://dzone.com/articles/scalafp-the-mystery-of-scalas-higher-kinded-types" class="external-link" target="_blank" rel="noopener">https://dzone.com/articles/scalafp-the-mystery-of-scalas-higher-kinded-types</a></li> <li><a href="https://www.stephanboyer.com/post/115/higher-rank-and-higher-kinded-types" class="external-link" target="_blank" rel="noopener">https://www.stephanboyer.com/post/115/higher-rank-and-higher-kinded-types</a></li> </ul> <h3 id="tagless-final"> Tagless final <a class="heading-link" href="#tagless-final"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://blog.rockthejvm.com/tagless-final/" class="external-link" target="_blank" rel="noopener">https://blog.rockthejvm.com/tagless-final/</a></li> <li><a href="https://blog.softwaremill.com/final-tagless-seen-alive-79a8d884691d" class="external-link" target="_blank" rel="noopener">https://blog.softwaremill.com/final-tagless-seen-alive-79a8d884691d</a></li> <li><a href="https://blog.softwaremill.com/bake-your-bread-tagless-final-style-dea9448b3dc3" class="external-link" target="_blank" rel="noopener">https://blog.softwaremill.com/bake-your-bread-tagless-final-style-dea9448b3dc3</a></li> <li><a href="https://www.basementcrowd.com/2019/01/17/an-introduction-to-tagless-final-in-scala/" class="external-link" target="_blank" rel="noopener">https://www.basementcrowd.com/2019/01/17/an-introduction-to-tagless-final-in-scala/</a></li> <li><a href="https://scalac.io/tagless-final-pattern-for-scala-code/" class="external-link" target="_blank" rel="noopener">https://scalac.io/tagless-final-pattern-for-scala-code/</a></li> </ul> <h3 id="fp-in-general"> FP in general <a class="heading-link" href="#fp-in-general"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <ul> <li><a href="https://github.com/mmenestret/fp-resources" class="external-link" target="_blank" rel="noopener">https://github.com/mmenestret/fp-resources</a></li> <li><a href="http://adit.io/posts/2013-04-17-functors,_applicatives,_and_monads_in_pictures.html" class="external-link" target="_blank" rel="noopener">http://adit.io/posts/2013-04-17-functors,_applicatives,_and_monads_in_pictures.html</a></li> </ul> <h3 id="streaming"> Streaming <a class="heading-link" href="#streaming"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <h4 id="fs2"> FS2 <a class="heading-link" href="#fs2"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://fs2.io/" class="external-link" target="_blank" rel="noopener">https://fs2.io/</a></li> </ul> <h3 id="oauth2"> OAuth2 <a class="heading-link" href="#oauth2"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h3> <h4 id="sttp-oauth2"> sttp-oauth2 <a class="heading-link" href="#sttp-oauth2"> <i class="fa-solid fa-link" aria-hidden="true" title="Link to heading"></i> <span class="sr-only">Link to heading</span> </a> </h4> <ul> <li><a href="https://ocadotechnology.github.io/sttp-oauth2/" class="external-link" target="_blank" rel="noopener">https://ocadotechnology.github.io/sttp-oauth2/</a></li> <li><a href="https://blog.michalp.net/posts/scala/oauth2-app-p1/" class="external-link" target="_blank" rel="noopener">https://blog.michalp.net/posts/scala/oauth2-app-p1/</a></li> </ul>https://learn-scala.polyvariant.org/general/Mon, 01 Jan 0001 00:00:00 +0000https://learn-scala.polyvariant.org/general/<ul> <li>Scala Exercises <a href="https://www.scala-exercises.org/scala_tutorial/terms_and_types" class="external-link" target="_blank" rel="noopener">https://www.scala-exercises.org/scala_tutorial/terms_and_types</a></li> <li>Scala at Light Speed <a href="https://www.youtube.com/watch?v=-8V6bMjThNo&amp;list=PLmtsMNDRU0BxryRX4wiwrTZ661xcp6VPM" class="external-link" target="_blank" rel="noopener">https://www.youtube.com/watch?v=-8V6bMjThNo&list=PLmtsMNDRU0BxryRX4wiwrTZ661xcp6VPM</a></li> <li>Foundations of Functional Programming in Scala <a href="https://www.youtube.com/watch?v=OdPaWmRnAc4&amp;list=PLiYD0LWExCDkXGpYRY3WjNscDfhe4D0ND" class="external-link" target="_blank" rel="noopener">https://www.youtube.com/watch?v=OdPaWmRnAc4&list=PLiYD0LWExCDkXGpYRY3WjNscDfhe4D0ND</a></li> <li>Functional Programming Strategies in Scala with Cats by Noel Welsh <a href="https://www.scalawithcats.com/dist/scala-with-cats.html" class="external-link" target="_blank" rel="noopener">https://www.scalawithcats.com/dist/scala-with-cats.html</a></li> <li>Practical FP in Scala by Gabriel Volpe (free / pay any price) <a href="https://leanpub.com/pfp-scala" class="external-link" target="_blank" rel="noopener">https://leanpub.com/pfp-scala</a></li> <li>Functional Programming in Scala by Martin Odersky <a href="https://www.coursera.org/learn/progfun1" class="external-link" target="_blank" rel="noopener">https://www.coursera.org/learn/progfun1</a></li> <li>Strategic Scala Style: Principle of Least Power by Li Haoi <a href="https://www.lihaoyi.com/post/StrategicScalaStylePrincipleofLeastPower.html" class="external-link" target="_blank" rel="noopener">https://www.lihaoyi.com/post/StrategicScalaStylePrincipleofLeastPower.html</a></li> <li>Functional Stream Processing in Scala by Zainab Ali <a href="https://pureasync.gumroad.com/l/functional-stream-processing-in-scala" class="external-link" target="_blank" rel="noopener">https://pureasync.gumroad.com/l/functional-stream-processing-in-scala</a></li> <li>Learn Scala 3, Functional Programming and ZIO 2 by Alvin Alexander <a href="https://www.learnscala.dev/" class="external-link" target="_blank" rel="noopener">https://www.learnscala.dev/</a></li> </ul> <p>Paid:</p>