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diff --git a/boost/hana/and.hpp b/boost/hana/and.hpp
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+++ b/boost/hana/and.hpp
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+/*!
+@file
+Defines `boost::hana::and_`.
+
+@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_AND_HPP
+#define BOOST_HANA_AND_HPP
+
+#include <boost/hana/fwd/and.hpp>
+
+#include <boost/hana/concept/logical.hpp>
+#include <boost/hana/config.hpp>
+#include <boost/hana/core/dispatch.hpp>
+#include <boost/hana/detail/variadic/foldl1.hpp>
+#include <boost/hana/if.hpp>
+
+
+BOOST_HANA_NAMESPACE_BEGIN
+    //! @cond
+    template <typename X, typename Y>
+    constexpr decltype(auto) and_t::operator()(X&& x, Y&& y) const {
+        using Bool = typename hana::tag_of<X>::type;
+        using And = BOOST_HANA_DISPATCH_IF(and_impl<Bool>,
+            hana::Logical<Bool>::value
+        );
+
+    #ifndef BOOST_HANA_CONFIG_DISABLE_CONCEPT_CHECKS
+        static_assert(hana::Logical<Bool>::value,
+        "hana::and_(x, y) requires 'x' to be a Logical");
+    #endif
+
+        return And::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
+    }
+
+    template <typename X, typename ...Y>
+    constexpr decltype(auto) and_t::operator()(X&& x, Y&& ...y) const {
+        return detail::variadic::foldl1(
+            *this,
+            static_cast<X&&>(x),
+            static_cast<Y&&>(y)...
+        );
+    }
+    //! @endcond
+
+    template <typename L, bool condition>
+    struct and_impl<L, when<condition>> : default_ {
+        template <typename X, typename Y>
+        static constexpr decltype(auto) apply(X&& x, Y&& y) {
+            return hana::if_(x, static_cast<Y&&>(y), x);
+        }
+    };
+BOOST_HANA_NAMESPACE_END
+
+#endif // !BOOST_HANA_AND_HPP