code: func (me Bitmap) IterTyped(f func(int) bool) bool {
  	if me.RB == nil {
  		return true
  	}
  	it := me.RB.Iterator()
  	for it.HasNext() {
  		if !f(int(it.Next())) {
  			return false
  		}
  	}
  	return true
  }
docs: // Returns true if all values were traversed without early termination.