random scala notes

scala

* print generated code: scala -Xprint:typer <scala file>

* compiler phases: scalac -Xshow-phases
* show generated code: scala -Xprint:<phases> (-Xprint:typer or -Xprint:1-14 or -Xprint:all)
* show generated code in gui: scala -Ybrowse:<phases>



scalac options in sbt [source](http://tpolecat.github.io/2014/04/11/scalac-flags.html):

    scalacOptions ++= Seq(
      "-deprecation",           
      "-encoding", "UTF-8",       // yes, this is 2 args
      "-feature",                
      "-language:existentials",
      "-language:higherKinds",
      "-language:implicitConversions",
      "-unchecked",
      "-Xfatal-warnings",       
      "-Xlint",
      "-Yno-adapted-args",       
      "-Ywarn-dead-code",        // N.B. doesn't work well with the ??? hole
      "-Ywarn-numeric-widen",   
      "-Ywarn-value-discard",
      "-Xfuture",
      "-Ywarn-unused-import"     // 2.11 only
  )