Joachim Durchholz wrote:
> Marshall schrieb:
> > void foo() {
> > int i = 0;
> > int j = 0;
> > j = 1;
> > i = 2;
> > // check value of j here. It is still 1, no matter what you filled
> > // in above.
> > // The assignment to i cannot be made to affect the value of j.
> > }
> >
> > Those two local primitive variables cannot be made to have the same
> > identity.
>
> Sure. To state it more clearly, they cannot be aliases.
Yes.
> > But you can update them, so this is an example of mutability
> > without the possibility of identity.
>
> You're being a bit sloppy with terminology here. "Identity" in the
> phrase above refers to two entities, in the sense of "i and j cannot be
> identical".
> Identity is actually a property of a single entity, namely that what
> remains constant regardless of what you do with the entity.
It is a fair critque. I'll try to be more precise.
Marshall
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