frickjack: scala REPL classpath hack

frickjack: scala REPL classpath hack

Saturday, May 04, 2013 scala REPL classpath hack While writing code I often want to take a quick look at the behavior of some class or module, and might wind up writing a short test program just to verify that some method does what I expect or that I'm obeying some DSL's state machine or whatever. One of the great things about Scala (and groovy, javascript, clojure, ...) is its REPL , which allows me to test little blocks of code without the hassle of compiling a test file. Unfortunately, Scala's REPL launch scripts (scala.bat, scala.sh) do not provide command-line options for manipulating the REPL's classpath, so the REPL can't see the jars IVY assembles for my project ( javasimon , joda-time , guava , gson , guice , ... ). Anyway - it's easy to just copy %SCALA_HOME%/bin/scala.bat (or ${SCALA_HOME}/scala if not on Windows - whatever), and modify it, so the REPL runs with the same classpath as your project, and at the same time set the heap size, logging config-file system property,

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