Pregunta

Can I check the value of field in companion object without referring to class' actual object?

I'd like to store a static counter, increase it everytime new object of that class is created and be able to check it's value without using object itself, is this possible?

¿Fue útil?

Solución

Is this what you want?

   object Foo {
        private var counter = 0
        private def increment = {
           counter += 1; 
           counter
        }
    }

    class Foo {
        val i = Foo.increment
        println(i)
    }

Otros consejos

import java.util.concurrent.atomic.AtomicInteger
object Foo {
  val counter = new AtomicInteger(0)
}
class Foo {
  val i = Foo.counter.incrementAndGet()
  println(i)
}
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