REPL
The repl
command starts a Scala REPL, which lets you interactively run your code and inspect its results:
scala-cli repl
scala> println("Hello Scala")
Hello Scala
scala> :exit
Scala CLI by default uses the normal Scala REPL.
If you prefer to use the Ammonite REPL, specify --amm
to launch it rather than the default REPL:
scala-cli repl --amm
Loading...
Welcome to the Ammonite Repl 2.4.0-23-76673f7f (Scala 3.0.2 Java 11.0.11)
@ println("Hello ammonite")
Hello ammonite
@ exit
Bye!
The repl
command accepts the same arguments as the compile command. It first compiles any provided sources, and then exposes those results and any provided dependencies to the REPL session:
mylibrary/Messages.scala
package mylibrary
object Messages {
def message = "Hello"
def print(): Unit = println(message)
}
scala-cli repl mylibrary/Messages.scala
Compiling project (Scala 3.0.2, JVM)
Compiled project (Scala 3.0.2, JVM)
scala> import mylibrary._
scala> Messages.print()
Hello
scala> :quit
Inject code as JAR file in class path
If your application inspects its class path, and requires only JAR files in it, use --as-jar
to
put the Scala CLI project in the class path as a JAR file rather than as a directory:
scala-cli repl Foo.scala --as-jar