Re: [boost] [iterator] Using zip_iterator with std::pair

Subject: Re: [boost] [iterator] Using zip_iterator with std::pair
From: Giovanni Piero Deretta (gpderetta_at_[hidden])
Date: 2012-10-16 06:01:45

On Tue, Oct 16, 2012 at 9:06 AM, "Claas H. Köhler" <claas.koehler_at_[hidden]> wrote:
> Hi!
>
> I would like to use the boost::zip_iterator with std::pair. Unfortunately this does not work out of
> the box, but there exists a namespace  boost::detail::tuple_impl_specific, which apparently needs to
> be specialised for each tuple type.
>
> I managed to re-implement tuple_meta_transform and tuple_meta_accumulate for std::tuple, which seems
> to be straightforward. However, there are functions of the form
>
> template<typename Tuple, typename Fun>
> complex_result_type tuple_transform(const Tuple&, Fun)
>
> which have to be overloaded as well, if I am not mistaken. However, overloading this with something like
> template<typename... Args, typename Fun>
> complex_result_type tuple_transform(const std::tuple<Args...>&, Fun)
>
> is probably not going to work, since this would be a partial template specialisation of a function.

That's an overload actually and should work fine. Did you try it?

HTH,

-- gpd