26 Ranges library [ranges]

26.7 Range adaptors [range.adaptors]

26.7.26 Chunk by view [range.chunk.by]

26.7.26.1 Overview [range.chunk.by.overview]

chunk_­by_­view takes a view and a predicate, and splits the view into subranges between each pair of adjacent elements for which the predicate returns false.
The name views​::​chunk_­by denotes a range adaptor object ([range.adaptor.object]).
Given subexpressions E and F, the expression views​::​chunk_­by(E, F) is expression-equivalent to chunk_­by_­view(E, F).
[Example 1: vector v = {1, 2, 2, 3, 0, 4, 5, 2}; for (auto r : v | views::chunk_by(ranges::less_equal{})) { cout << '['; auto sep = ""; for (auto i : r) { cout << sep << i; sep = ", "; } cout << "] "; } // The above prints [1, 2, 2, 3] [0, 4, 5] [2] — end example]