Re: [Boost-users] multi_index_container with protected constructor

Subject: Re: [Boost-users] multi_index_container with protected constructor
From: Horváth Imre (blemidon_at_[hidden])
Date: 2013-07-17 10:04:27

Thank you, it works!

Best regards:
Imre Horvath
2013. 07. 17, szerda keltezéssel 16.47-kor Pekka Seppänen ezt írta:
> On 17.7.2013 16:07, Horváth Imre wrote:
> > Hi,
> >
> > I want to use boost::multi_index_container with a class that have
> > protected constructors, but the compile fails.
> > I think I should make multi_index_container a friend of my class, but I
> > don't know how.
> 
> I guess you don't want to do that (as quite likely you'd like to pass the 
> instance around, ie. P, not create new n copies of Item), but add:
> 
> 
> explicit
> 
> > 	Item(P item)
> > 	: source(item->get_source())
> > 	, target(item->get_target())
> > 	{
> > 	}
> 
> and it compiles. Yes, copy constructing via create(P item) works as expected 
> with that trick done.
> 
> My compiler choked on types too much, so didn't look where it actually tries 
> to construct shared_ptr< Item > and feed that to constructor. But I think this 
> is the main cause anyway and explicit keyword is there to help you out.
> 
> 
> -- Pekka
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