std::experimental::basic_string_view<CharT,Traits>::size, std::experimental::basic_string_view<CharT,Traits>::length
Min standard notice:
Returns the number of CharT elements in the view, i.e. std::distance(begin(), end()).
# Declarations
constexpr size_type size() const noexcept;
(library fundamentals TS)
constexpr size_type length() const noexcept;
(library fundamentals TS)
# Return value
The number of CharT elements in the view.