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Diffstat (limited to 'boost/hana/fwd/symmetric_difference.hpp')
| -rw-r--r-- | boost/hana/fwd/symmetric_difference.hpp | 30 |
1 files changed, 4 insertions, 26 deletions
diff --git a/boost/hana/fwd/symmetric_difference.hpp b/boost/hana/fwd/symmetric_difference.hpp index 2908daaeee..2253f167eb 100644 --- a/boost/hana/fwd/symmetric_difference.hpp +++ b/boost/hana/fwd/symmetric_difference.hpp @@ -15,40 +15,18 @@ Distributed under the Boost Software License, Version 1.0. BOOST_HANA_NAMESPACE_BEGIN - //! Returns the symmetric set-theoretic difference of two sets. - //! @relates hana::set - //! - //! Given two sets `xs` and `ys`, `symmetric_difference(xs, ys)` is a new - //! set containing all the elements of `xs` that are not contained in `ys`, - //! and all the elements of `ys` that are not contained in `xs`. The - //! symmetric difference of two sets satisfies the following: - //! @code - //! symmetric_difference(xs, ys) == union_(difference(xs, ys), difference(ys, xs)) - //! @endcode - //! - //! - //! @param xs, ys - //! Two sets to compute the symmetric difference of. - //! - //! - //! Example - //! ------- - //! @include example/symmetric_difference.cpp -#ifdef BOOST_HANA_DOXYGEN_INVOKED - constexpr auto symmetric_difference = [](auto&& xs, auto&& ys) { - return tag-dispatched; - }; -#else + // Note: This function is documented per datatype/concept only. + //! @cond template <typename S, typename = void> struct symmetric_difference_impl : symmetric_difference_impl<S, when<true>> { }; + //! @endcond struct symmetric_difference_t { template <typename Xs, typename Ys> - constexpr auto operator()(Xs&& xs, Ys&& ys) const; + constexpr auto operator()(Xs&&, Ys&&) const; }; constexpr symmetric_difference_t symmetric_difference{}; -#endif BOOST_HANA_NAMESPACE_END #endif // !BOOST_HANA_FWD_SYMMETRIC_DIFFERENCE_HPP |