std::dynamic_extent

 

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dynamic_extent

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Deduction guides

 

Defined in header <span>
inline constexpr std::size_t dynamic_extent = std::numeric_limits<std::size_t>::max();		(since C++20)

std::dynamic_extent is a constant of type std::size_t that is used to differentiate std::span of static and dynamic extent.

Note

Since std::size_t is an unsigned type, an equivalent definition is:

inline constexpr std::size_t dynamic_extent = -1;

See integral conversions.

See also

span (C++20)

a non-owning view over a contiguous sequence of objects (class template)