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add conversion to std::array

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bolero-MURAKAMI 2016-02-17 10:06:43 +09:00
parent cc756cb22d
commit 5bf0907974
1 changed files with 10 additions and 0 deletions
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10
sprout/array/array.hpp
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@ -67,6 +67,12 @@ namespace sprout {
}
public:
value_type elems[static_size ? static_size : 1];
private:
template<sprout::index_t... Indexes>
SPROUT_CONSTEXPR std::array<T, N>
to_std_array(sprout::index_tuple<Indexes...>) const {
return std::array<T, N>{{elems[Indexes]...}};
}
public:
// construct/copy/destroy:
template<typename T2>
@ -258,6 +264,10 @@ namespace sprout {
return sprout::distance(begin(), p);
}
#endif
SPROUT_CONSTEXPR operator std::array<T, N>() const {
return to_std_array(sprout::make_index_tuple<N>::make());
}
};
template<typename T, std::size_t N>
SPROUT_CONSTEXPR_OR_CONST typename sprout::array<T, N>::size_type sprout::array<T, N>::static_size;