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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/boost/libs/hana/test/fold_right | |
parent | Initial commit. (diff) | |
download | ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.tar.xz ceph-19fcec84d8d7d21e796c7624e521b60d28ee21ed.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/hana/test/fold_right')
-rw-r--r-- | src/boost/libs/hana/test/fold_right/ref.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/fold_right/ref.cpp b/src/boost/libs/hana/test/fold_right/ref.cpp new file mode 100644 index 000000000..e23cd5211 --- /dev/null +++ b/src/boost/libs/hana/test/fold_right/ref.cpp @@ -0,0 +1,39 @@ +// 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/at.hpp> +#include <boost/hana/fold_right.hpp> +#include <boost/hana/tuple.hpp> +namespace hana = boost::hana; + +// +// Make sure that we can fold_right and take arguments by reference. +// + +int main() { + // with state + { + auto xs = hana::make_tuple(1, 2, 3); + int state = 99; + + int& one = hana::fold_right(xs, state, [](int& i, int&) -> int& { + return i; + }); + BOOST_HANA_RUNTIME_CHECK(one == 1); + one = 10; + BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(xs) == 10); + } + + // without state + { + auto xs = hana::make_tuple(1, 2, 3); + int& one = hana::fold_right(xs, [](int& i, int&) -> int& { + return i; + }); + BOOST_HANA_RUNTIME_CHECK(one == 1); + one = 10; + BOOST_HANA_RUNTIME_CHECK(hana::at_c<0>(xs) == 10); + } +} |