{

double num;

std::string str;

Guard() : num() {}

Guard(double num_, std::string str_) : num(num_), str(str_) {}

friend bool operator==(const Guard& lhs, const Guard& rhs) { return lhs.num == rhs.num && lhs.str == rhs.str; }

friend bool operator!=(const Guard& lhs, const Guard& rhs) { return !(lhs == rhs); }

Guard(const Guard&);

Guard& operator=(const Guard&);

{

#ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT

Guard g0, g1(1.0, "one"), g2(2.0, "two");

boost::optional<Guard> og0 ( boost::in_place() );

boost::optional<Guard> og1 ( boost::in_place(1.0, "one") );

boost::optional<Guard> og1_( boost::in_place(1.0, "one") );

boost::optional<Guard> og2 ( boost::in_place<Guard>(2.0, "two") );

BOOST_TEST(og0);

BOOST_TEST(og1);

BOOST_TEST(og1_);

BOOST_TEST(og2);

BOOST_TEST(*og0 == g0);

BOOST_TEST(*og1 == g1);

BOOST_TEST(*og1_ == g1);

BOOST_TEST(*og2 == g2);

BOOST_TEST(og1_ == og1);

BOOST_TEST(og1_ != og2);

BOOST_TEST(og1_ != og0);

#endif

{

#ifndef BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT

#ifndef BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION

Guard g0, g1(1.0, "one"), g2(2.0, "two");

boost::optional<Guard> og0, og1, og1_, og2;

og0 = boost::in_place();

og1 = boost::in_place(1.0, "one");

og1_ = boost::in_place(1.0, "one");

og2 = boost::in_place<Guard>(2.0, "two");

BOOST_TEST(og0);

BOOST_TEST(og1);

BOOST_TEST(og1_);

BOOST_TEST(og2);

BOOST_TEST(*og0 == g0);

BOOST_TEST(*og1 == g1);

BOOST_TEST(*og1_ == g1);

BOOST_TEST(*og2 == g2);

BOOST_TEST(og1_ == og1);

BOOST_TEST(og1_ != og2);

BOOST_TEST(og1_ != og0);

#endif

#endif

{

test_ctor();

test_assign();

return boost::report_errors();

}