The Modern C++ Challenge

20. Container any, all, none

Write a set of general-purpose functions that enable checking whether any, all, or none of the specified arguments are present in a given container. These functions should make it possible to write code as follows:

std::vector<int> v{ 1, 2, 3, 4, 5, 6 };assert(contains_any(v, 0, 3, 30));std::array<int, 6> a{ { 1, 2, 3, 4, 5, 6 } };assert(contains_all(a, 1, 3, 5, 6));std::list<int> l{ 1, 2, 3, 4, 5, 6 };assert(!contains_none(l, 0, 6));