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view: add ssize query

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Danny Robson 2019-05-12 07:53:08 +10:00
parent 52467c056d
commit da6d5cb2a8
1 changed files with 10 additions and 0 deletions
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10
view.hpp
View File

@ -276,6 +276,16 @@ namespace cruft {
return static_cast<size_type> (std::distance (m_begin, m_end)); return static_cast<size_type> (std::distance (m_begin, m_end));
} }
///--------------------------------------------------------------------
/// Returns a signed count of items in the view.
constexpr ssize_t
ssize (void) const noexcept
{
return std::distance (m_begin, m_end);
}
///-------------------------------------------------------------------- ///--------------------------------------------------------------------
/// Returns a subview of the first `count` elements of this view. /// Returns a subview of the first `count` elements of this view.
[[nodiscard]] constexpr auto [[nodiscard]] constexpr auto