[Issue 2631] alias symbol this;

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2631





------- Comment #6 from site.puremagic.com at brianguertin.com  2009-01-29 07:12 -------
(In reply to comment #5)
> (In reply to comment #2)
> > (In reply to comment #1)
> > > Oh, and aliasing this should also nicely take care of the "inner name trick":
> > > 
> > > template Blah!(T) { alias T Blah; }
> > > 
> > > becomes
> > > 
> > > template Blah!(T) { alias T this; }
> > > 
> > > Much cleaner because it clarifies the intent and allows "one point of
> > > renaming".
> > > 
> > 
> > struct S
> > {
> >     mixin Blah!(int); // what happens?
> > }
> > 
> > If 'this' always refers to the template, you can't do cute things like mixing
> > in support for operations on values of type S.
> > 
> > If 'this' refers to the template sometimes and to the enclosing scope in
> > others, it's confusing.
> 
> Could the usual scope differentiation syntax be used?
>     alias T this; // I mean the template itself
> vs
>     alias T .this; // I mean the this in the outer scope
> 
> Granted the "scopes" aren't actually different when you mix-in a template, but
> I think the intent is clear enough.
> 

would this make sense?
     alias T template; // I mean the template itself
 vs
     alias T this; // I mean the this in the outer scope


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