Why is sbt needed?
Table of Contents
Why is sbt needed?
Besides managing your project, some build tools, including sbt, can automatically manage dependencies for you. This means that if you need to use some libraries written by others, sbt can automatically download the right versions of those libraries and include them in your project for you.
Do you need sbt for Scala?
1 Answer. No you don’t need it. sbt will download Scala for you. If you install sbt-extras (basically just a script) you don’t even need to download sbt : it will automatically download the sbt launcher you need.
What is the difference between sbt and Scala?
SBT is tied to a specific project defined by a build. sbt file in a way that $ sbt console will load up the same REPL environment as $ scala but with the addition of all of the project code and dependencies defined in the build available for import. Also, it will use the version of Scala defined by build. sbt .
What does sbt package do?
sbt-assembly creates a fat JAR – a single JAR file containing all class files from your code and libraries. By evolution, it also contains ways of resolving conflicts when multiple JARs provide the same file path (like config or README file).
What is sbt and Maven?
Maven allows a project to build using its project object model (POM) and a set of plugins that are shared by all projects using Maven, providing a uniform build system. On the other hand, SBT is detailed as “An open-source build tool for Scala and Java projects”. It is similar to Java’s Maven and Ant.
What is sbt server?
sbt server is a feature that is newly introduced in sbt 1. Actually, sbt server just adds network access to sbt’s shell command so, in addition to accepting input from the terminal, server also to accepts input from the network. This allows multiple clients to connect to a single session of sbt.
Which Scala version does sbt use?
sbt’s Scala version sbt uses that same version of Scala to compile the build definitions that you write for your project because they use sbt APIs. This version of Scala is fixed for a specific sbt release and cannot be changed. For sbt 1.5. 5, this version is Scala 2.12.
What does provided mean in build sbt?
Seq[sbt. Attributed[java. io. File]] . “Provided by” points you to the scoped key that defines the value, in this case ProjectRef(uri(“file:/tmp/hello/”), “root”) / Test / fullClasspath (which is the fullClasspath key scoped to the Test configuration and the ProjectRef(uri(“file:/tmp/hello/”), “root”) project).
What are sbt commands?
Common commands
| Command | Description |
|---|---|
| clean | Deletes all generated files (in the target directory). |
| compile | Compiles the main sources (in src/main/scala and src/main/java directories). |
| test | Compiles and runs all tests. |
What is sbt based Scala project?
sbt is an open-source build tool for Scala and Java projects, similar to Apache’s Maven and Ant. Its main features are: Native support for compiling Scala code and integrating with many Scala test frameworks. Integration with the Scala interpreter for rapid iteration and debugging. Support for mixed Java/Scala projects.