----- Original Message ----- From: "Joel de Guzman" <joel@boost-consulting.com> To: <boost@lists.boost.org> Sent: Sunday, February 07, 2010 1:20 AM Subject: Re: [boost] [fusion] is there an adapter for C-arrays?
On 2/7/2010 3:34 AM, vicente.botet wrote:
Hi,
I need to visit the members of a C++ type using Fusion sequences. For structures I plan to use BOOST_FUSION_ADAPT_STRUCT. I need also to visit also c-arrays (with static size). I see that there is already an adapter for boost::array. Is there an adapter for C-arrays?
Sorry, no. Would you want to contribute one? It's easy if you take a look at the boost::array adapter.
Hi, Well if doesn't exists I will need to see how to do it :) I will inform you when I reach to get something. I don't know if I'm taking the good way. I need to apply a function to all the elements of a compound C++ type satisfying a given type constraint. For example, if I have struct Type { void f(); }; struct D1 : Type {}; struct D2 : Type {}; struct S1 { D1 d1; int i; }; struct S2 : Type { char c; S1 s1; D2 d2; }; S2 a[3]; I would like to apply f() to all the instances inheritig from Type, that is { a[0], a[1], a[2], a[0].s1.d1, a[1].s1.d1, a[2].s1.d1,a[0].d2, a[1].d2, a[2].d2} I think that I will need to see every type as a sequence, then make a flat view of the tree, restrict with a filter_view and last apply the function on the resulting sequence. Is there a simple way to implement this flat view? Or even better, is it already available? Best, Vicente