

        bool operator~() const;
        operator bool() const;
        reference&amp; flip();
    };

    typedef bool <a href="#const_reference">const_reference</a>;

    <a href=
"#cons0">dynamic_bitset</a>();

    explicit <a href=
"#cons1">dynamic_bitset</a>(const Allocator&amp; alloc);

    explicit <a href=
"#cons2">dynamic_bitset</a>(size_type num_bits, unsigned long value = 0,
                            const Allocator&amp; alloc = Allocator());

    template &lt;typename CharT, typename Traits, 