This is Recipe 14.5, “How to compile Scala code with scalac and run it with scala .” Though you normally use the Simple Build Tool (SBT) to build Scala applications, you may want to use more basic tools to compile and run small test programs, in the same way you might use javac and java with small Java applications.
Subsequently, Scala compiler scalac offers various compiler options, also referred to as compiler flags, to change how to compile your program. Nowadays, most people are not running scalac from the command line. Instead, they use sbt, an IDE, and other tools as their interface to the compiler. In fact, Nowadays, most people are not running scalac from the command line. Instead, they use sbt, an IDE, and other tools as their interface to the compiler. Therefore they may not even have scalac installed, and won’t think to do man scalac. This page comes to the rescue for the people to find… Default paths can be listed by running a command line tool: Next, Running Scala Binaries. To run Scala from the command-line, simply download the binaries and unpack the archive. Start the Scala interpreter (aka the “REPL”) by launching scala from where it was unarchived. Start the Scala compiler by launching scalac from where it was unarchived. Thereof, Run a Scala application using the sbt shell. You can run your application using the sbt shell that is a part of any sbt project. Open your sbt project. If you want to delegate your builds and imports to sbt, in the sbt projects tool window, click the icon to open the sbt settings.
20 Similar Question Found
How to compile a scala program in scala 3?
The command scala3-repl will start a Scala console that you can use to interactively evaluate Scala programs. Within this console, run the command :load test.scala to load and execute the file test.scala. To use the Scala 3 compiler to compile a file test.scala simply run scala3-compiler test.scala in your terminal. Installing Scala 3 with sbt
How to compile source code to classes in scala?
Given this configuration, to compile your source code files to the classes directory, use the following command: Assuming Main.scala is an object that extends App, Pizza.scala is a regular class file, and Topping.scala is a case class, your classes directory will contain these files after your scalac command:
Is the scala library index supported by scala center?
The Scala Library Index (or Scaladex) is a representation of a map of all published Scala libraries. With Scaladex, a developer can now query more than 175,000 releases of Scala libraries. Scaladex is officially supported by Scala Center. The Scala Library Index
Is there support for scala.js in scala 3?
Yet, until last August, support for Scala.js in Scala 3 was close to non-existent. A first preview was shipped in Dotty 0.27.0-RC1, with support for the portable subset of Scala and native JS types. Since then, support for non-native JS types was added and will ship as part of Scala 3.0.0-M1.
How to run scala fiddle in scala editor?
ScalaFiddle is an online playground for creating, sharing and embedding Scala fiddles (little Scala programs that run directly in your browser). Just write some Scala code in the editor on the left and click the Run button (or press Ctrl-Enter on Windows/Linux, or Cmd-Enter on macos) to compile and run your code.
Is the scala 2 compiler compatible with scala 3?
They are mostly source compatible, but differences exist. However: Scala 3 code can use Scala 2 artifacts because the Scala 3 compiler understands the classfile format for sources compiled with Scala 2.12 and upwards. Scala 3 and Scala 2 share the same standard library.
What's the difference between scala 2 and scala 3?
From the sbt user viewpoint, Scala 3 is just another Scala version, since every default task and setting works the same. Yet Scala 3 changes the picture of compatibility in the ecosystem and is going to change our way of dealing with Scala versions and library dependencies.
What is the difference between scala and scala.js?
Scala.js is a Scala compiler that compiles to JavaScript, making it possible to write Scala programs that can run in web browsers or Node.js. The compiler was in development since 2013, was announced as no longer experimental in 2015 (v0.6). Version v1.0.0-M1 was released in June 2018, but in 2019 was still as M7.
Where to find scala docs for scala enterprise?
In the coming weeks, Scala Enterprise documentation will have a new look! We will maintain the same URL, docs.scala.com, and you will be able to login using your current Scala account.
When does teatro alla scala return to scala?
FALL 2021 Season 2021/2022 Box Office guidelines ONLINE SALES CALENDAR More shows Contacts Teatro alla Scala Academy Filarmonica della Scala Scalashop Legal notice Credits 2020-2021 Season
Is there an eclipse scala extension for scala?
Of course there is a Scala extension for Eclipse. Why wouldn’t there be? This Scala IDE provides dedicated support for developing pure Scala and mixed applications. Scala IDE 3.0 offers a whole host of tools and features for developers, along with a few notable bug fixes.
How to compile a scala project in intellij idea?
When you build (Ctrl+F9) a Scala project, the compilation is done with the Scala server. The output of the compilation is displayed in the Build tool window. Besides the regular compilation output, IntelliJ IDEA displays a chart which can help you optimize the structure of your project modules and the VM options of the Scala Compile Server.
Do you need sbt to compile to scala?
Though you normally use the Simple Build Tool (SBT) to build Scala applications, you may want to use more basic tools to compile and run small test programs, in the same way you might use javac and java with small Java applications. Compile programs with scalac, and run them with scala.
How to build, compile and run a scala project?
Now the project files are in the src/main/scala/io/mem0r1es/trank and when I try to compile via scalac or run sbt run there I get a bunch of errors about objects not being members of the base packaged i.e. object ranking is not a member of package io.mem0r1es.trank I would greatly appreciate some help knowing how to run this Scala project.
Which is the best compiler to compile scala?
On the Scala Compiler page, you can choose the incremental compiler such as Zinc, which a standalone version of the incremental compiler or the IntelliJ IDEA native one. You can also select the compilation order in which code should be compiled. For example, compile first Scala code and then Java code.
How to use sbt to compile and run scala project?
You want to use SBT to compile and run a Scala project, and package the project as a JAR file. Create a directory layout to match what SBT expects, then run sbt compile to compile your project, sbt run to run your project, and sbt package to package your project as a JAR file.
What's the fastest way to compile scala 3?
Now you can compile Scala source code: To start the REPL, run: scala. The fastest way to create a new project in Scala 3 is using sbt (1.1.4+). Create a Scala 3 project: Or a Scala 3 project that cross compiles with Scala 2:
Which is slower re compile or really compile?
It turns out to be about two orders of magnitude slower for a basic regular expression, such as r'\w+\s+ ( [0-9_]+)\s+\w*'. The 'reallyCompiled' methods use the internal interface, which bypasses the cache. Note the one that compiles on each loop iteration is only iterated 10,000 times, not one million.
How to compile and compile jslide example in java?
Compile the java code with javac filename.java and then execute the class file as a java class. Upon executing the code you’ll have a JSlide Example Box with a Slider and a Knot. A slider will have a range of numbers for indication.
Why do i get a compile error when i compile vba?
Fix: Compile Error: The Code in This Project Must Be Updated to Use on 64-Bit Systems. You may receive an error when you try to run, edit a macro, or compile Microsoft Visual Basic Application (VBA) code. Compile Error: The code in this project must be updated for use on 64-bit systems.
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