Daily bit(e) of C++ | std::count, std::count_if
Daily bit(e) of C++ #272, Counting elements matching a value or a predicate: std::count, std::count_if.
The std::count and std::count_if are linear search (counting) algorithms that return the number of elements matching either a provided value or a provided predicate.
Both variants support a parallel version through std::execution.
