23 lines
677 B
C++
23 lines
677 B
C++
// Copyright Louis Dionne 2013-2017
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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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#include <boost/hana/assert.hpp>
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#include <boost/hana/functional/overload_linearly.hpp>
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#include <string>
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namespace hana = boost::hana;
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auto f = hana::overload_linearly(
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[](int i) { return i + 1; },
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[](std::string s) { return s + "d"; },
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[](double) { BOOST_HANA_RUNTIME_CHECK(false && "never called"); }
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);
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int main() {
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BOOST_HANA_RUNTIME_CHECK(f(1) == 2);
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BOOST_HANA_RUNTIME_CHECK(f("abc") == "abcd");
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BOOST_HANA_RUNTIME_CHECK(f(2.2) == static_cast<int>(2.2) + 1);
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}
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