On 04/25/2013 10:35 AM, Noel Grandin wrote:
I want to change things so that I can write:
void bar() {
Reference<B> b = ....
methodThatTakesA( b );
}
Yeah. One of my older pet peeves...
Stephan Bergmann wrote:
This has been discussed before more than once, but I tend to forget
whether it has never gone past discussion stage because the
implementation would be slightly tricky (using SFNIAE to restrict
implicit conversions from Reference<B> to Reference<A> to cases
where B is derived from A) or because there was some fundamental
flaw with it.
Works by and large with the proof of concept from
https://gerrit.libreoffice.org/#/c/3698/
, the only problem I recall, is a slight performance degradation,
since IIRC then operator Reference<XInterface>& needs to go due to
ambiguities (which avoids temporaries). Possibly offset nicely by
needing much less queryInterfaces...
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