mrdocs::SplitLinesView::size

constexpr
auto
size() noexcept(noexcept(_S_size(_M_derived())))
requires forward_range<_Derived>
	&& sized_sentinel_for<sentinel_t<_Derived>, iterator_t<_Derived>>;

constexpr
auto
size() const noexcept(noexcept(_S_size(_M_derived())))
requires forward_range<const _Derived>
	&& sized_sentinel_for<sentinel_t<const _Derived>,
			      iterator_t<const _Derived>>;