Scala summary

scala.txt

== Scala notes 


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


== looping
    // both equivalent to for(int i = 0; i < nvals; i++) 
    for (i <- 0 to nvals - 1) something(i) 
    for (i <- 0 until nvals ) something(i) 
    (0 until nvals)foreach{ i => something } 

    // nested: 
    for {
      x <- 0 until 5
      y <- 0 until 10
    } {
      println(s"x = $x, y = $y") 
    }
    
    // the ranges can be dependant on each other too! 
    for {
      x <- 0 until 5
      y <- 0 until 2*x 
    } {
      println(s"x = $x, y = $y") 
    }