http://d.puremagic.com/issues/show_bug.cgi?id=7105



--- Comment #6 from Kenji Hara <k.hara...@gmail.com> 2012-02-19 03:55:08 PST ---
(In reply to comment #5)
> (In reply to comment #1)
> > Another use case is to support foreach on a container of arbitrary 
> > constancy,
> > by using
> > 
> >     int opApply(int delegate(ref inout(T)) dg) inout;
> 
> I think that the inout parameter contravariant (I've filed as issue 7542) is
> necessary due to enable such signatures.

And I've posted issue 7543.

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