Setup scala in linux

####Setup scala in linux and Hello World
it is so simple!

1. download scala from official website
2. unzip it: tar xvzf scala-2.10.3.tgz
3. create SCALA_HOME
export SCALA_HOME=~/projects/scala/scala-2.10.3/

add it to path
export PATH=$PATH:$SCALA_HOME/bin

4. create hello world
vi HelloWorld.scala


object HelloWorld {
def main(args: Array[String]) {
println("Hello, world!")
}
}

5. compile
scalac HelloWorld.scala
6. run
scala HelloWorld

####what do we get from scala?
simplicity, consistency and power.