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diff --git a/boost/hana/all_of.hpp b/boost/hana/all_of.hpp
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+/*!
+@file
+Defines `boost::hana::all_of`.
+
+@copyright Louis Dionne 2013-2016
+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_ALL_OF_HPP
+#define BOOST_HANA_ALL_OF_HPP
+
+#include <boost/hana/fwd/all_of.hpp>
+
+#include <boost/hana/any_of.hpp>
+#include <boost/hana/concept/searchable.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/functional/compose.hpp>
+#include <boost/hana/not.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename Xs, typename Pred>
+    constexpr auto all_of_t::operator()(Xs&& xs, Pred&& pred) const {
+        using S = typename hana::tag_of<Xs>::type;
+        using AllOf = BOOST_HANA_DISPATCH_IF(all_of_impl<S>,
+            hana::Searchable<S>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Searchable<S>::value,
+        "hana::all_of(xs, pred) requires 'xs' to be a Searchable");
+    #endif
+
+        return AllOf::apply(static_cast<Xs&&>(xs), static_cast<Pred&&>(pred));
+    }
+    //! @endcond
+
+    template <typename S, bool condition>
+    struct all_of_impl<S, when<condition>> : default_ {
+        template <typename Xs, typename Pred>
+        static constexpr auto apply(Xs&& xs, Pred&& pred) {
+            return hana::not_(hana::any_of(static_cast<Xs&&>(xs),
+                    hana::compose(hana::not_, static_cast<Pred&&>(pred))));
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_ALL_OF_HPP