1.1 KiB
1.1 KiB
[range.enumerate.overview]
25 Ranges library [ranges]
25.7 Range adaptors [range.adaptors]
25.7.24 Enumerate view [range.enumerate]
25.7.24.1 Overview [range.enumerate.overview]
enumerate_view is a view whose elements represent both the position and value from a sequence of elements.
The name views::enumerate denotes a range adaptor object ([range.adaptor.object]).
Given a subexpression E, the expression views::enumerate(E) is expression-equivalent toenumerate_view<views::all_t<decltype((E))>>(E).
[Example 1: vector vec{ 1, 2, 3 };for (auto [index, value] : views::enumerate(vec)) cout << index << ":" << value << ' '; // prints 0:1 1:2 2:3 â end example]