cpp/experimental/ranges/algorithm/search n

@1@ Searches the range for the first sequence of  elements whose projected values are each equal to the given value  according to the predicate. @2@ Same as, but uses as the source range, as if using  as  and  as.

Return value
Iterator to the beginning of the found sequence in the range. If no such sequence is found, an iterator that compares equal to is returned.

Complexity
At most applications of the predicate and the projection.