Scala: Difference between revisions

Latest revision as of 14:35, 20 April 2024

Scala is an object-functional programming and scripting language for general software applications. Scala has full support for functional programming (including currying, pattern matching, algebraic data types, lazy evaluation, tail recursion, immutability, etc.) and a very strong static type system. This allows programs written in Scala to be very concise and thus smaller in size than most general purpose programming languages. Many of Scala's design decisions were inspired by criticism over the shortcomings of Java.

Installation

Install the scala^AUR package. Additionally you can install the packages scala-docs^AUR and/or scala-sources^AUR for further reference.

Since Scala runs on the JVM (Java Virtual Machine), you will need a fully functional Java Runtime Environment (JRE) in order to execute or compile your programs.

For scala3 (which is also known as dotty), you can install scala3^AUR or scala-dotty^AUR. Note that scala3 is incompatible with scala 2.13 or older.

Build tools

Most build tools are available:

Scala CLI

As an alternative to using build tools or the compiler directly, you can use Scala CLI for building and distributing your software.

Install the scala-cli^AUR package.

Usage and IDEs

This article or section needs expansion.

Reason: Redirect to IDE pages, a lot of IDEs provide scala as a plugin, so list how to install said plugin (Discuss in Talk:Scala)

Just as in other programming languages like Python, you can interact with an interpreter

$ scala

Welcome to Scala version 2.*.* (OpenJDK Server VM, Java 1.*.*).
Type in expressions to have them evaluated.
Type :help for more information.

scala>

as well as simply compile and run your programs from the command line.

$ scalac HelloWorld.scala
$ scala HelloWorld

Many different IDEs such as Eclipse or Netbeans offer support for Scala. Alternatively, consider scala-ide^AUR or ammonite. You can also download an IDE that is optimized for Scala and also based on Eclipse directly from the official Scala Website.

@@ Line 9: / Line 9: @@
 From [[wikipedia:Scala_(programming_language)|Wikipedia]]:
-:''Scala is an object-functional programming and scripting language for general software applications. Scala has full support for functional programming (including currying, pattern matching, algebraic data types, lazy evaluation, tail recursion, immutability, etc.) and a very strong static type system. This allows programs written in Scala to be very concise and thus smaller in size than most general purpose programming languages. Many of Scala's design decisions were inspired by criticism over the shortcomings of Java.''
+:Scala is an object-functional programming and scripting language for general software applications. Scala has full support for functional programming (including currying, pattern matching, algebraic data types, lazy evaluation, tail recursion, immutability, etc.) and a very strong static type system. This allows programs written in Scala to be very concise and thus smaller in size than most general purpose programming languages. Many of Scala's design decisions were inspired by criticism over the shortcomings of Java.
 == Installation ==
-[[Install]] the {{Pkg|scala}} package available in the [[official repositories]]. Additionally you can install the packages {{pkg|scala-docs}} and/or {{pkg|scala-sources}} for further reference.
+[[Install]] the {{AUR|scala}} package. Additionally you can install the packages {{AUR|scala-docs}} and/or {{AUR|scala-sources}} for further reference.
 Since Scala runs on the [[wikipedia:JVM|JVM]] (Java Virtual Machine), you will need a fully functional [[Java#Installation|Java Runtime Environment]] (JRE) in order to execute or compile your programs.
-For scala3 (which is also known as [https://dotty.epfl.ch dotty]), you can install {{AUR|scala3}} or {{AUR|scala-dotty}} from AUR. Note that scala3 is '''incompatible''' with scala 2.13 or older.
+For scala3 (which is also known as [https://dotty.epfl.ch dotty]), you can install {{AUR|scala3}} or {{AUR|scala-dotty}}. Note that scala3 is '''incompatible''' with scala 2.13 or older.
 === Build tools ===
-Most build tools are available in the official community repository:
+Most build tools are available:
 * {{pkg|sbt}}
+* {{pkg|mill}}
 * {{pkg|maven}}
 * {{pkg|gradle}}
+=== Scala CLI ===
+As an alternative to using build tools or the compiler directly, you can use [https://scala-cli.virtuslab.org/ Scala CLI] for building and distributing your software.
+Install the {{AUR|scala-cli}} package.
 == Usage and IDEs ==
+{{Expansion|Redirect to IDE pages, a lot of IDEs provide scala as a plugin, so list how to install said plugin}}
 Just as in other programming languages like [[Python]], you can interact with an interpreter
@@ Line 44: / Line 53: @@
   $ scala HelloWorld
-Many different [[IDE]]s such as [[Eclipse]] or [[Netbeans]] offer support for Scala. The {{AUR|eclipse-scala-ide}}{{Broken package link|package not found}} package for example is available in the [[AUR]]. But you can also download an IDE that is optimized for Scala and also based on Eclipse directly from [https://scala-lang.org the official Scala Website].
+Many different [[IDE]]s such as [[Eclipse]] or [[Netbeans]] offer support for Scala. Alternatively, consider {{AUR|scala-ide}} or {{pkg|ammonite}}. You can also download an IDE that is optimized for Scala and also based on Eclipse directly from [https://scala-lang.org the official Scala Website].
 == See also ==