Class val

test/result_state_test.cpp:22–70

static_assert(std::is_same<int const &, leaf::result<int const &>::value_type>::value, "Bad value_type");

struct val
{
    static int id_count;
    static int count;
    int id;
    float a = 0;
    int b = 0;

    val( float a, int b ) noexcept:
        id(++id_count),
        a(a),
        b(b)
    {
        ++count;
    }

    val() noexcept:
        id(++id_count)
    {
        ++count;
    }

    val( val const & x ) noexcept:
        id(x.id)
    {
        ++count;
    }

    val( val && x ) noexcept:
        id(x.id)
    {
        ++count;
    }

    ~val() noexcept
    {
        --count;
    }

    friend bool operator==( val const & a, val const & b ) noexcept
    {
        return a.id == b.id;
    }

    friend std::ostream & operator<<( std::ostream & os, val const & v ) noexcept
    {
        return os << v.id;
    }
};
int val::count = 0;
int val::id_count = 0;