整理

include/boost/range/detail/less.hpp

@@ -0,0 +1,26 @@
+/*
+Copyright 2019 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#ifndef BOOST_RANGE_DETAIL_LESS
+#define BOOST_RANGE_DETAIL_LESS
+
+namespace boost {
+namespace range {
+namespace detail {
+
+struct less {
+    template<class T, class U>
+    bool operator()(const T& lhs, const U& rhs) const {
+        return lhs < rhs;
+    }
+};
+
+} /* detail */
+} /* range */
+} /* boost */
+
+#endif