current
var current(var type);
Returns the current active object of the given type.
Usage
var gc = current(GC);
show(gc);
var thread = current(Thread);
show(thread);
Implicit Object
The Current class can be implemented by types which have implicit instances associated with them. For example it can be used to retrieve the current Thread, or it could be used to get the current Garbage Collector.
This class may be implemented by types which express the Singleton Design Pattern
struct Current {
  var (*current)(void);
};