stabilize build system: depends, installer, boost/bdb fixes, cross targets groundwork

2026-02-24 18:38:47 +00:00
parent da8c28aaeb
commit 65cb2619a7
13106 changed files with 2484322 additions and 1804 deletions
@@ -0,0 +1,38 @@
+/*!
+@file
+Forward declares `boost::hana::fold`.
+
+@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)
+ */
+
+#ifndef BOOST_HANA_FWD_FOLD_HPP
+#define BOOST_HANA_FWD_FOLD_HPP
+
+#include <boost/hana/config.hpp>
+#include <boost/hana/fwd/fold_left.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! Equivalent to `fold_left`; provided for convenience.
+    //! @ingroup group-Foldable
+    //!
+    //! `fold` is equivalent to `fold_left`. However, it is not tag-dispatched
+    //! on its own because it is just an alias to `fold_left`. Also note that
+    //! `fold` can be called with or without an initial state, just like
+    //! `fold_left`:
+    //!
+    //! @code
+    //!     fold(xs, state, f) == fold_left(xs, state, f)
+    //!     fold(xs, f) == fold_left(xs, f)
+    //! @endcode
+    //!
+    //!
+    //! Example
+    //! -------
+    //! @include example/fold.cpp
+    constexpr auto fold = fold_left;
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_FWD_FOLD_HPP