Re: [Boost-users] Using assign::map_list_of for complex types

From: Hughes, James (jhughes_at_[hidden])
Date: 2006-11-16 03:32:08

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] 
> [mailto:boost-users-bounces_at_[hidden]] On Behalf Of 
> Thorsten Ottosen
> Sent: 15 November 2006 12:00
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] Using assign::map_list_of for complex types
> 
> Hughes, James wrote:
> > Hello all,
> > 
> > I've been trying to create an initiliser for the following 
> > (paraphrased)
> > 
> > struct data
> > {
> > Char *str;
> 
> const char*?

Typo when copying from Linux box to email box - soz!

> 
> > Vector<int> stuff;
> > };
> > 
> > 
> > map<int, struct data> mapstuff = map_list_of (1, ("hello", 
> list_of (3) 
> > (4) (2)), (3, ("goodbye", list_of (1) (3) );
> > 
> > Etc etc
> > 
> > However, this doesn't work, with a very complex compile error from 
> > assign. I've tried also...
> > 
> > map<int, struct data> mapstuff = map_list_of
> > (1, {"hello", list_of (3) (4) (2) } ),   // note curly braces 
> > (3, {"goodbye", list_of (1) (3) ) } );
> > 
> > But that doesn't work either.
> > 
> > Is it actually possible to do something like this, and if so, how?
> 
> I suspect that you have to provide a constructor for your data class:
> 
> template< class Range >
> data( const char* str, const Range& r )
> : str(str), stuff(boost::begin(r),boost::end(r))
> { }
> 

I did something along these lines but still got a load of compile
faults. Will post a more accurate code snippet when time allows, but
have a deadline end of today!!

> -Thorsten
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
> 

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