template<input_iterator I1, sentinel_for<I1> S1,
         forward_iterator I2, sentinel_for<I2> S2,
         class Pred = ranges::equal_to, class Proj1 = identity,
         class Proj2 = identity>
requires indirectly_comparable<I1, I2, Pred, Proj1, Proj2>
constexpr I1
    find_first_of(I1 first1, S1 last1, I2 first2, S2 last2,
                  Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {});

template<input_range R1, forward_range R2,
         class Pred = ranges::equal_to, class Proj1 = identity, class Proj2 = identity>
requires indirectly_comparable<iterator_t<R1>, iterator_t<R2>, Pred, Proj1, Proj2>
constexpr borrowed_iterator_t<R1>
    find_first_of(R1&& r1, R2&& r2, Pred pred = {}, Proj1 proj1 = {}, Proj2 proj2 = {});

#include <iostream>
#include <algorithm>
#include <vector>
#include <string>

namespace ranges = std::ranges;

int main()
{
    auto f = {'!', '_', '1'};
    std::string str = "hel1o_world!";
    auto find_it = ranges::find_first_of(str, f);
    if (find_it != str.end())
    {
        std::cout << std::string_view(find_it, str.end()) << std::endl;
    }
    else
    {
        std::cout << "No matches." << std::endl;
    }
    return 0;
}

1o_world!