Re: [Boost-users] iterator over boost::tuple

Subject: Re: [Boost-users] iterator over boost::tuple
From: Louis Dionne (ldionne.2_at_[hidden])
Date: 2015-07-06 14:53:57

Uthpal Urubail <uthpal.urubail <at> altair.com> writes:

> 
> Experts,
> What is the best way to iterator over boost::tuple and return value?
> Example:
> 	For(int i=0;i<boost::tuples::length<T>::value;i++)
> 	{
> 		Boost_tuple_example.get<i>();
> 	}
> Regards,
> UJ

If you're in C++14, Hana to the rescue!

------------------------------------------------------------------------------
#include <boost/hana/tuple.hpp>
#include <string>
namespace hana = boost::hana;

int main() {
    auto xs = hana::make_tuple(1, 'x', std::string{"foobar"});
    hana::for_each(xs, [](auto x) {
        // use x
    });
}
------------------------------------------------------------------------------

Regards,
Louis