Method operator[]

include/stringzilla/stringzilla.hpp:1843–1843

    const_reverse_iterator crend() const noexcept { return const_reverse_iterator(start_ - 1); }

    reference operator[](size_type pos) const noexcept { return start_[pos]; }
    reference at(size_type pos) const noexcept { return start_[pos]; }
    reference front() const noexcept { return start_[0]; }
    reference back() const noexcept { return start_[length_ - 1]; }