scala 安装

http://www.scala-lang.org/download/install.html

http://zh.scala-tour.com/#/hello-wolrd scala指南

To run Scala from the command-line, simply download the binaries and unpack the archive.

Start the Scala interpreter (aka the “REPL”) by launching scala from where it was unarchived. Start the Scala compiler by launching scalac from where it was unarchived.

Path and Environment

For quick access, add scala and scalac to your path. For example:

Environment	Variable	Value (example)
Unix	$SCALA_HOME	/usr/local/share/scala
	$PATH	$PATH:$SCALA_HOME/bin
Windows	%SCALA_HOME%	c:\Progra~1\Scala
	%PATH%	%PATH%;%SCALA_HOME%\bin

Get Started with Scala

Check out the “first lines of code” section of our getting started guide to take your first steps in Scala.