Re: [Boost-users] [array] range check (at compile time)

Subject: Re: [Boost-users] [array] range check (at compile time)
From: OvermindDL1 (overminddl1_at_[hidden])
Date: 2010-03-05 21:30:57

On Fri, Mar 5, 2010 at 11:37 AM, alfC <alfredo.correa_at_[hidden]> wrote:
>> FYI,Fusionadaptsboostarrayas a fully conforming sequence.
>> So:
>>
>> Â  Â  Â fusion::at_c<2>(a)
>>
>> is perfectly valid.
>
> this syntax in this minimal example works (runs) but the error is
> still at runtime
>
> #include<iostream>
> #include <boost/fusion/sequence.hpp>
> #include</usr/include/boost/fusion/adapted/array.hpp>
> int main(){
> Â  Â  Â  Â boost::array<double, 2> a;
> Â  Â  Â  Â std::cout
> Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â <<boost::fusion::at_c<0>(a)<<' ' //ok
> Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â <<boost::fusion::at_c<1>(a)<<' ' //ok
> Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â  Â <<boost::fusion::at_c<2>(a)<<std::endl; //gives error but at
> runtime (boost/array.hpp runtime assertion)
> Â  Â  Â  Â return 0;
> }

Hmm, shouldn't the adaptor for boost::array use the template parameter
of boost::array to define its extant?