Boolean to be automatically initialized to false.

boolean.h

class boolean_t
{
public:
    inline boolean_t(bool b = false) : m_bool(b) {}
    inline boolean_t(const boolean_t&) = default;
    
    inline explicit operator bool() const noexcept { return m_bool; }
    inline bool operator!() const noexcept { return !m_bool; }
    
    inline boolean_t& operator=(const boolean_t&) = default;
    inline boolean_t& operator=(bool b) noexcept { m_bool = b; return *this; }
    
    inline void set(bool b) noexcept { m_bool = b; }
    inline void negate() noexcept { m_bool = not m_bool; }
    
private:
    bool m_bool;
};