std::dynamic_extent (3) Linux Manual Page

std::dynamic_extent – std::dynamic_extent

Synopsis

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 a non-owning view over a contiguous sequence of objects
        (class template)
(C++20)