Scala example source code file (spec.scala)

This example Scala source code file (spec.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

a, a, anyref, anyref, array, array, b, b, base, baz, foo, inner, qux, withanon

The Scala spec.scala source code

class Bar[@specialized(Int, AnyRef) A](a: A) {
  val memb = a
}


class WithInner[@specialized(Int, AnyRef) A](a: A) { 
  class Inner {
    def meth = a
  }
}


class Baz[@specialized(Int, AnyRef) A, @specialized(Int, AnyRef) B] {
  def ab(a: A, b: B) = (a, b)
}


trait Base[@specialized(Int, AnyRef) A]
class Concrete[@specialized(Int, AnyRef) A] extends Base[A]


class WithAnon[@specialized(Int, AnyRef) A](a: A) {
  new AnyRef {
    def foo = a
  }
}


class Norm {
  def id[@specialized(Int, AnyRef) A](a: A) = a
}


class Qux[@specialized(AnyRef) A] {
  def memb[@specialized(AnyRef) B](a: A, b: B) = (a, b)
}


class Foo[@specialized(Int, AnyRef) A](val a: Array[A]) {
  a(0)
  
  def id(elem: A) = a(0) = elem
}


// instantiation and selection
object Test {
  def main(arg: Array[String]) {
    val f = new Foo(new Array[String](5))
    f.id("")
    
    val z = new Baz[Int, Double]
    z.ab(1, 1.0)
    
    testspec(new Array[String](5))
    testspec(new Array[Int](5))
  }
  
  def testspec[@specialized(Int, AnyRef) T](arr: Array[T]) = arr(0)
}