On Oct 7, 5:13 pm, OvermindDL1 <overmind...@gmail.com> wrote:
On Thu, Oct 7, 2010 at 5:42 PM, Alfredo Correa <alfredo.cor...@gmail.com> wrote:
On Thu, Oct 7, 2010 at 3:33 PM, OvermindDL1 <overmind...@gmail.com> wrote:
You do know that based on this:
http://www.boost.org/doc/libs/1_44_0/libs/fusion/doc/html/fusion/adap... boost::array is already adapted as a fusion container and can be used directly, as soon as you include the proper hpp that is?
yes, thank you, that what I wrote in my last post . I can make this work
#include <boost/fusion/adapted/boost_array.hpp> #include <boost/fusion/include/boost_array.hpp> ... boost::array<double, 3> boostarr={{1.0, 2.1, 3.2}}; vector<double, double, double> fusionvec(boostarr); //now works
Ah, heh, got lost in the noise and I missed it.
On Thu, Oct 7, 2010 at 5:42 PM, Alfredo Correa <alfredo.cor...@gmail.com> wrote:
I still can't do the other way around:
boost::array<double, 3> boostarr2(fusionvec); //doesn't work ideas?
I know that would not work because that is still a 'custom' type as far as fusion is concerned, and only free functions can work on it, a constructor is obviously not a free function, so you need to write a free function to do it (probably called 'copy', probably using fusion's foreach to copy each element one to the other, should be pretty well optimized out thanks to the template-magic).
no luck. I can't make it work. First I tried with "for_each" and didn't manage to put together the code because I need to copy one sequence from the other and the for_each doesn't keep track of the index. So I tried with "transform", the code compiles but does nothing to the array. boost::array<double, 3> ba0; boost::fusion::transform(ba0, bfv1, copy()); where struct copy{ typedef void result_type; void operator()(double& lhs, double const& rhs) const{ lhs = rhs; } }; ba0 is still undefined after running this. Obviously I am getting Boost.Fusion wrong. Thanks, Alfredo
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