A simple reference that stores the value and exposes methods to read and update it.
class simple reference[any value value type]
implements reference wrapper[value type]
extends debuggable
private type id the value type
private type id the reference type
simple reference(type id the value type, type id the reference type, value wrapper[value type] or null the value)
this • the value type = the value type
this • the reference type = the reference type
this • the value = the value