Method operator()

scripts/bench_find.cpp:499–499

    inline matcher_std_string_first_of_t(std::string_view needles) noexcept : needles_(needles) {}
    inline size_type needle_length() const noexcept { return 1; }
    inline size_type operator()(std::string_view haystack) const noexcept { return haystack.find_first_of(needles_); }
    constexpr size_type skip_length() const noexcept { return 1; }
};