Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The header <boost/core/make_span.hpp> provides function templates
make_span to conveniently
create span objects. They
are useful before C++17 where Class Template Argument Deduction (CTAD) is
not available.
namespace boost { template<class I> constexpr span<I> make_span(I* d, std::size_t n) noexcept; template<class I> constexpr span<I> make_span(I* b, I* e) noexcept; template<class T, std::size_t N> constexpr span<T, N> make_span(T(&a)[N]) noexcept; template<class T, std::size_t N> constexpr span<T, N> make_span(std::array<T, N>& a) noexcept; template<class T, std::size_t N> constexpr span<const T, N> make_span(const std::array<T, N>& a) noexcept; template<class R> span<remove_pointer_t<iterator_t<R> > > make_span(R&& r); } /* boost */
template<class I> span<I> make_span(I* f, std::size_t
c);
Returns span<I>(f, c).
template<class I> span<I> make_span(I* f, I* l);
Returns span<I>(f, l).
template<class T, std::size_t
N>
span<T, N> make_span(T(&a)[N]);
Returns span<T, N>(a).
template<class T, std::size_t
N>
span<T, N> make_span(std::array<T, N>&
a);
Returns span<T, N>(a).
template<class T, std::size_t
N>
span<const T, N> make_span(const std::array<T, N>&
a);
Returns span<const T, N>(a).
template<class R> span<remove_pointer_t<iterator_t<R> > > make_span(R&& r);
Returns span<remove_pointer_t<iterator_t<R>
> >(std::forward<R>(r)).