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307d3d0ec8
- Split type class instances into separate files - Instances provided automatically by a type class are actually MCDs - Test each instance in a single file, not one file per method - Refactor the operator system to fix the ADL-related bug.
54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
/*
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@copyright Louis Dionne 2014
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/detail/assert.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/tuple.hpp>
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using namespace boost::hana;
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int main() {
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//! [comparable]
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BOOST_HANA_CONSTANT_ASSERT(equal(int_<1>, int_<1>));
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BOOST_HANA_CONSTANT_ASSERT(not_equal(int_<1>, int_<2>));
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BOOST_HANA_CONSTANT_ASSERT(equal(int_<1>, long_<1>));
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BOOST_HANA_CONSTANT_ASSERT(not_equal(int_<1>, long_<2>));
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// Incomparable integrals are considered unequal.
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struct Person {
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int age;
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// ...
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};
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BOOST_HANA_CONSTANT_ASSERT(not_equal(
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integral<int, 1>,
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integral<int Person::*, &Person::age>
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));
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//! [comparable]
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//! [literals]
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using namespace literals; // contains the _c suffix
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BOOST_HANA_CONSTANT_ASSERT(1234_c == llong<1234>);
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BOOST_HANA_CONSTANT_ASSERT(-1234_c == llong<-1234>);
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BOOST_HANA_CONSTANT_ASSERT(sum(list(1_c, 2_c, 3_c, 4_c)) == 10_c);
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//! [literals]
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//! [operators]
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BOOST_HANA_CONSTANT_ASSERT(int_<1> + int_<3> == int_<4>);
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// Mixed-type operations are supported:
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BOOST_HANA_CONSTANT_ASSERT(size_t<3> * ushort<5> == size_t<15>);
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BOOST_HANA_CONSTANT_ASSERT(size_t<15> == int_<15>);
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//! [operators]
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//! [orderable]
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BOOST_HANA_CONSTANT_ASSERT(less(int_<-3>, int_<3>));
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BOOST_HANA_CONSTANT_ASSERT(max(int_<-3>, long_<2>) == long_<2>);
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BOOST_HANA_CONSTANT_ASSERT(min(int_<-3>, long_<2>) == int_<-3>);
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//! [orderable]
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}
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