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Add deduction guides

pull/13881/head
Marc Emmers 2021-01-16 21:04:05 +01:00
parent 2e1b360e67
commit f7e19b5232
1 changed files with 18 additions and 0 deletions
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18
platform/cxxsupport/mstd_span
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@ -323,6 +323,24 @@ private:
detail::storage<element_type, extent> _storage; detail::storage<element_type, extent> _storage;
}; };
#if __cplusplus >= 201703L || __cpp_deduction_guides >= 201703L
// Deduction guides
template<class It, class EndOrSize>
span(It, EndOrSize) -> span<remove_reference_t<iter_reference_t<It>>>;
template<class T, size_t N>
span(T (&)[N]) -> span<T, N>;
template<class T, size_t N>
span(std::array<T, N>&) -> span<T, N>;
template<class T, size_t N>
span(const std::array<T, N>&) -> span<const T, N>;
template<class R>
span(R&&) -> span<remove_reference_t<detail::range_reference_t<R>>>;
#endif
template<class ElementType, size_t Extent> template<class ElementType, size_t Extent>
constexpr span<ElementType, Extent> make_span(ElementType (&arr)[Extent]) constexpr span<ElementType, Extent> make_span(ElementType (&arr)[Extent])
{ {