Re: [Boost-users] [fusion] more trouble with transform

12 Nov 2011

      On Sat, Nov 12, 2011 at 12:20 PM, Ovanes Markarian
wrote:
...
Hi!
please see my answer below.
On Sat, Nov 12, 2011 at 12:03 PM, Gennadiy Rozental wrote:
...
Hi,
Now I am trying to perform transform which mutates:
int
main()
{
   B b1, b2;
   auto z1 = fusion::make_list( b1, b2 ); !!! create a list of copied Bs
auto z2 = fusion::as_list( fusion::transform( z1, make_c() ) ); !!!
copies Bs again
Actually transformation does not copy Bs. They are only copied at list
construction , but transform calls the function:

inline typename result_of::as_list<Sequence const>::type
as_list(Sequence const& seq)
{
   return result_of::as_list<Sequence const>::call(seq);
}

Which deals with a const sequence...

Regards,
Ovanes