2.9 KiB
Getting started
Intro
To start, open Quickstart page localhost:8020 for quick access to all the tools
From the quicklaunch page you can open workspace tools, such as code editor or terminal
The main code editor of this workspace is Code-server
Workspace has full-size browser-base terminal
Scala
To check scala version, execute in terminal
scala -version
To open scala REPL simply execute
scala
Hello world
Use Code editor to create folder helloworld with file Hello.scala in it. The file should have the following content
object Hello {
def main(args: Array[String]) = {
println("Hello, world")
}
}
Open terminal, go into this folder and execute
scala Hello.scala
Hello world with sbt
cd to the projects directory, and create new project with Sbt
cd /home/project
sbt new scala/scala3.g8
Upon prompt type any project name, i.e. "hello-world". Sbt will generate progje boilerplate with the required folder structure.
Enter the project folder, compile and run the app
sbt run
Coursier
Coursier is the Scala application and artifact manager. It can install Scala applications and setup your Scala development environment. It can also download and cache artifacts from the web.
Coursier provides a number of services:
- manage the installed Scala applications:
install,list,update,uninstall,search - configure channels to install Scala applications from:
channel - launchers for Scala applications:
launch,bootstrap - manage the installed JVMs:
java,java-home - directly manipulate Maven dependencies:
fetch,resolve - perform setup again
List all applications, installed by Coursier
cs list
The install command installs Scala applications, i.e.
cs install scalafmt
If you want to launch another scala version
cs launch scala:2.12.15