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Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/hana/example/replace_if.cpp | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/boost/libs/hana/example/replace_if.cpp b/src/boost/libs/hana/example/replace_if.cpp new file mode 100644 index 000000000..6f10c473a --- /dev/null +++ b/src/boost/libs/hana/example/replace_if.cpp @@ -0,0 +1,23 @@ +// 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/assert.hpp> +#include <boost/hana/config.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/replace_if.hpp> +#include <boost/hana/tuple.hpp> +namespace hana = boost::hana; + + +BOOST_HANA_CONSTEXPR_LAMBDA auto negative = [](auto x) { + return x < 0; +}; + +int main() { + BOOST_HANA_CONSTEXPR_CHECK( + hana::replace_if(hana::make_tuple(-3, -2, -1, 0, 1, 2, 3), negative, 0) + == + hana::make_tuple(0, 0, 0, 0, 1, 2, 3) + ); +} |