immediate values don't show up in ObjectSpace, can't add Singleton
methods

Robert Klemme wrote:
> David A. Black <dblack / wobblini.net> wrote:

> >> Here "x" is always a reference variable - like every other variable
> >> is a reference variable.  It's so simple but sometimes difficult to
> >> get used to - especially when coming from other programming
> >> languages.
> >
> > I think the "immediate value" status of Fixnums etc. goes beyond just
> > being an optimization, though, and has some practical consequences
> 
> Which?