std::experimental::to_array

 

C++

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Technical Specifications

 

Technical specifications

Filesystem library (filesystem TS)

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Library fundamentals v2

experimental::propagate_const

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Defined in header <experimental/array>
template <class T, std::size_t N> constexpr std::array<std::remove_cv_t<T>, N> to_array(T (&a)[N]);		(library fundamentals TS v2)

Creates a std::array from the built-in array a. The elements of the std::array are copy-initialized from the corresponding element of a.

Parameters

a

-

the built-in array to be used to initialize the std::array

Return value

An std::array object whose elements are copy-initialized from the corresponding element of a.

Possible implementation

namespace detail { template <class T, std::size_t N, std::size_t... I> constexpr std::array<std::remove_cv_t<T>, N> to_array_impl(T (&a)[N], std::index_sequence<I...>) { return { {a[I]...} }; } }   template <class T, std::size_t N> constexpr std::array<std::remove_cv_t<T>, N> to_array(T (&a)[N]) { return detail::to_array_impl(a, std::make_index_sequence<N>{}); }