gistfile1.scala

object aop {
    trait A {
        def foo
    }
    
    class B extends A {
        def foo = println("foo")
    }

    trait Around extends A {
        abstract override def foo = {println("pre");super.foo;println("post")}
    }

    def main(args: Array[String]) {
        val a = new B with Around
        a.foo
    }
}