| 13 | |
| 14 | |
| 15 | int main() { |
| 16 | auto rv_nothing = [] { return hana::nothing; }; // rvalue nothing |
| 17 | |
| 18 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 19 | hana::concat(rv_nothing(), hana::nothing), |
| 20 | hana::nothing |
| 21 | )); |
| 22 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 23 | hana::concat(hana::nothing, rv_nothing()), |
| 24 | hana::nothing |
| 25 | )); |
| 26 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 27 | hana::concat(rv_nothing(), rv_nothing()), |
| 28 | hana::nothing |
| 29 | )); |
| 30 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 31 | hana::concat(rv_nothing(), hana::just(ct_eq<0>{})), |
| 32 | hana::just(ct_eq<0>{}) |
| 33 | )); |
| 34 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 35 | hana::concat(hana::just(ct_eq<0>{}), rv_nothing()), |
| 36 | hana::just(ct_eq<0>{}) |
| 37 | )); |
| 38 | |
| 39 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 40 | hana::concat(hana::nothing, hana::nothing), |
| 41 | hana::nothing |
| 42 | )); |
| 43 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 44 | hana::concat(hana::nothing, hana::just(ct_eq<0>{})), |
| 45 | hana::just(ct_eq<0>{}) |
| 46 | )); |
| 47 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 48 | hana::concat(hana::just(ct_eq<0>{}), hana::nothing), |
| 49 | hana::just(ct_eq<0>{}) |
| 50 | )); |
| 51 | BOOST_HANA_CONSTANT_CHECK(hana::equal( |
| 52 | hana::concat(hana::just(ct_eq<0>{}), hana::just(ct_eq<1>{})), |
| 53 | hana::just(ct_eq<0>{}) |
| 54 | )); |
| 55 | } |