std::tuple_size(std::span)
From cppreference.com
Defined in header <span>
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template< class T, std::size_t N > class tuple_size< std::span<T, N> > : |
(1) | (since C++20) |
template< class T > class tuple_size< std::span<T, std::dynamic_extent> >; // Not defined |
(2) | (since C++20) |
Provides access to the number of elements in a static-extent span
as a compile-time constant expression. If the span
has dynamic extent, the tuple_size
specialization is an incomplete type.
Inherited from std::integral_constant
Member constants
value [static] |
N , the number of elements in the span (public static member constant) |
Member functions
operator std::size_t |
converts the object to std::size_t, returns value (public member function) |
operator() (C++14) |
returns value (public member function) |
Member types
Type | Definition |
value_type
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std::size_t
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type
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std::integral_constant<std::size_t, value> |
Example
This section is incomplete Reason: no example |
See also
obtains the size of tuple at compile time (class template specialization) |