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Try Scala 3
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There are multiple ways of getting started with Scala 3.
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- - You can try Scala 3 in your browser with Scastie.
- - If you already have sbt installed, you can create a Scala 3 project and sbt will take care of the rest.
- - You can install all necessary dependencies with coursier by running
cs setup. You can also run cs install scala3-compiler or cs install scala3-repl to install command-line commands for the compiler and repl, correspondingly.
- - You can manually install Scala 3 on your computer.
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Install Scala 3
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If you are a Mac user, you can install Scala 3 with brew:
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brew install lampepfl/brew/dotty
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- If you are a Linux or Windows user, as a prerequisite you need a JDK 8 or later properly installed on your system. The environment variable JAVA_HOME should point to your Java installation.
- For Windows users, we recommend using the Windows subsystem for linux or some other bash shell like git bash.
- Then download the latest release. Optionally add the path of the folder bin/ to the system environment variable PATH.
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Now you can compile Scala source code:
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scalac hello.scala
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To start the REPL, run: scala.
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Create a Scala 3 Project
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The fastest way to create a new project in Scala 3 is using sbt (1.1.4+).
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Create a Scala 3 project:
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sbt new scala/scala3.g8
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Or a Scala 3 project that cross compiles with Scala 2:
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sbt new lampepfl/dotty-cross.g8
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For documentation see the Scala 3 Example Project.
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Learn more about Scala 3
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You can find much more information about Scala 3 in ...
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