24 Ranges library [ranges]

24.6 Range factories [range.factories]

24.6.2 Empty view [range.empty]

24.6.2.1 Overview [range.empty.overview]

empty_­view produces a view of no elements of a particular type.
[Example 1: auto e = views::empty<int>; static_assert(ranges::empty(e)); static_assert(0 == e.size()); — end example]