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Diffstat (limited to 'src/boost/libs/hana/example/functional/lockstep.cpp')
-rw-r--r-- | src/boost/libs/hana/example/functional/lockstep.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/functional/lockstep.cpp b/src/boost/libs/hana/example/functional/lockstep.cpp new file mode 100644 index 000000000..cbb8266ca --- /dev/null +++ b/src/boost/libs/hana/example/functional/lockstep.cpp @@ -0,0 +1,20 @@ +// Copyright Louis Dionne 2013-2017 +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) + +#include <boost/hana/functional/lockstep.hpp> +#include <boost/hana/plus.hpp> +namespace hana = boost::hana; + + +constexpr int to_int(char c) { + return static_cast<int>(c) - 48; +} + +constexpr int increment(int i) { + return i + 1; +} + +static_assert(hana::lockstep(hana::plus)(to_int, increment)('3', 4) == 3 + 5, ""); + +int main() { } |