Re: [Boost-users] Set fusion::vector value with boost::shared_ptr

Subject: Re: [Boost-users] Set fusion::vector value with boost::shared_ptr
From: Stefan Troeger (stefantroeger_at_[hidden])
Date: 2012-04-15 12:19:28

On Sunday 15 April 2012 17:30:17 Christopher Schmidt wrote:
> Stefan Troeger <stefantroeger_at_[hidden]> writes:
> > I want to set a value in a fusion::vector at a specific location. This
> > works normaly very well with fusion::at_c(seq) = value, as at_c
> > returns a reference to the object at this position. However, this is
> > not garanted, the documentation only states about the return type: "In
> > most cases, this is a reference". I've encounterd a case where it is
> > not a reference, when the objects are of type
> > boost::shared_ptr<anytype>. Therefore I cant set the values as I'm
> 
> > only overriding a temporary. Minimal example:
> Please post a minimal but functional sample next time.  That said, I
> cannot reproduce your problem with the current boost trunk and gcc
> 4.7.0.

Hello Christopher,

sorry for not posting a fully functional example. Seeing your code working 
showed that the problem was within my fusion sequence creating and not withnin 
fusion. Changed that now and everything works in my program.
Thank you very much for your help.

Stefan