Build.scala, % and %% symbols meaning

by

From the official documentation:

http://www.playframework.com/documentation/2.1.1/SBTDependencies

Getting the right Scala version with %%

If you use groupID %% artifactID % revision instead of groupID % artifactID % revision (the difference is the double %% after the
groupID), SBT will add your project’s Scala version to the artifact
name. This is just a shortcut.

You could write this without the %%:

val appDependencies = Seq(
  "org.scala-tools" % "scala-stm_2.9.1" % "0.3"
)

Assuming the scalaVersion for your build is 2.9.1, the following is identical:

val appDependencies = Seq(
  "org.scala-tools" %% "scala-stm" % "0.3"
)

As you can see above, if you use %%, you don’t have to specify the
version.

More Related Contents:

  1. How to build an Uber JAR (Fat JAR) using SBT within IntelliJ IDEA?
  2. How to specify JVM maximum heap size “-Xmx” for running an application with “run” action in SBT?
  3. sbt-assembly: deduplication found error
  4. Setting up sbt to use Java 7 for compilation?
  5. how do I get sbt to use a local maven proxy repository (Nexus)?
  6. How to set heap size for sbt?
  7. How to change setting inside SBT command?
  8. Run custom task automatically before/after standard task
  9. How to force IntelliJ IDEA to reload dependencies from build.sbt after they changed?
  10. How to add “provided” dependencies back to run/test tasks’ classpath?
  11. Debugging Scala code with simple-build-tool (sbt) and IntelliJ
  12. How to create SBT project with IntelliJ Idea?
  13. How to suppress info and success messages in sbt?
  14. “Unknown artifact. Not resolved or indexed” error for scalatest
  15. How to run jar generated by package (possibly with other jars under lib)?
  16. Exception in thread “main” java.lang.NoSuchMethodError: scala.Product.$init$(Lscala/Product;)
  17. Can multi-projects from GIT be used as SBT dependencies?
  18. ScalaTest in sbt: is there a way to run a single test without tags?
  19. How to prevent java.lang.OutOfMemoryError: PermGen space at Scala compilation?
  20. Install sbt on ubuntu [closed]
  21. How to exclude commons-logging from a scala/sbt/slf4j project?
  22. How to reference external sbt project from another sbt project?
  23. Spark2.1.0 incompatible Jackson versions 2.7.6
  24. assembly-merge-strategy issues using sbt-assembly
  25. How do I run an sbt main class from the shell as normal command-line program?
  26. Is there a simple example of how to generate verilog from Chisel3 module?
  27. SBT stop run without exiting
  28. What is the purpose of type ascriptions in Scala?
  29. Why can’t I return a concrete subtype of A if a generic subtype of A is declared as return parameter?
  30. Spark Scala list folders in directory

Leave a Comment