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    <p>With template metaprogramming and little preprocessing, it is possible to achieve a syntax close to desirable:</p> <pre><code>//one has to "declare" once an attribute name to be able to use //it later in any number of class declarations DECLARE_ATTRIBUTE_NAME(foo); DECLARE_ATTRIBUTE_NAME(quux); DECLARE_ATTRIBUTE_NAME(bar); DECLARE_ATTRIBUTE_NAME(baz); //pass types and declared attribute names, separated by comma typedef TupleWithNamedMembers&lt;int, foo, float, quux, double, bar, char, baz &gt; MyTuple; //extra call to macro "MAKE_TUPLE" can be avoided, see below class MyConstruct: public MAKE_TUPLE(MyTuple) { }; //usage int main(int argc, char* argv[]) { MyConstruct construct; construct.foo = 3; construct.bar = 5.6; construct.quux = 8.9; construct.baz = 'h'; return 0; } </code></pre> <p>The implementation:</p> <pre><code>#ifndef TupleWithNamedMembersH #define TupleWithNamedMembersH //--------------------------------------------------------------------------- #include &lt;Loki/typelist.h&gt; #include &lt;Loki/HierarchyGenerators.h&gt; template&lt;class T, int a&gt; struct attribute { }; //the generated id is not really unique in all cases //one should provide better implementation #define GENERATE_UNIQ_ID(name) ((sizeof(#name)&lt;&lt;16)|__LINE__) //specializations of the struct "attribute" act like compile-time map between //a name ID and an attribute name #define DECLARE_ATTRIBUTE_NAME_IMPL(name, id) \ enum { id = GENERATE_UNIQ_ID(name) }; \ template&lt;class T&gt; \ struct attribute&lt;T,id&gt; \ {\ T name;\ }; #define DECLARE_ATTRIBUTE_NAME(name)\ DECLARE_ATTRIBUTE_NAME_IMPL(name, name) //helps to pass pair of type and name ID as a single type template&lt;class T, int i&gt; struct pair { static const int val = i; typedef T type; }; //unpacks compile-time data from PairT and inherits attribute //with name selected by ID template&lt;class PairT&gt; class holder: public attribute&lt;typename PairT::type,PairT::val&gt; { }; //turns template arguments into Loki::TypeList template &lt; typename T1 = Loki::NullType, int i1 = 0, typename T2 = Loki::NullType, int i2 = 0, typename T3 = Loki::NullType, int i3 = 0, typename T4 = Loki::NullType, int i4 = 0, typename T5 = Loki::NullType, int i5 = 0, typename T6 = Loki::NullType, int i6 = 0, typename T7 = Loki::NullType, int i7 = 0, typename T8 = Loki::NullType, int i8 = 0, typename T9 = Loki::NullType, int i9 = 0, typename T10 = Loki::NullType, int i10 = 0 &gt; struct TupleWithNamedMembers { public: typedef Loki::TL::MakeTypelist&lt;pair&lt;T1,i1&gt;, pair&lt;T2,i2&gt;, pair&lt;T3,i3&gt;, pair&lt;T4,i4&gt;, pair&lt;T5,i5&gt;, pair&lt;T6,i6&gt;, pair&lt;T7,i7&gt;, pair&lt;T8,i8&gt;, pair&lt;T9,i9&gt;, pair&lt;T10,i10&gt; &gt;::Result Result; }; //this macro is required because of internal compiler error that I encounter //Loki::GenScatterHierarchy makes a class inherit every attribute from the type list #define MAKE_TUPLE(types) Loki::GenScatterHierarchy&lt;types::Result, holder&gt; #endif //end of "TupleWithNamedMembers.h" </code></pre> <p>Notes: The MAKE_TUPLE macro should be a metafunction, if your compiler is OK with the code below:</p> <pre><code>template &lt; typename T1 = Loki::NullType, int i1 = 0, typename T2 = Loki::NullType, int i2 = 0, typename T3 = Loki::NullType, int i3 = 0, typename T4 = Loki::NullType, int i4 = 0, typename T5 = Loki::NullType, int i5 = 0, typename T6 = Loki::NullType, int i6 = 0, typename T7 = Loki::NullType, int i7 = 0, typename T8 = Loki::NullType, int i8 = 0, typename T9 = Loki::NullType, int i9 = 0, typename T10 = Loki::NullType, int i10 = 0 &gt; struct MakeTupleWithNamedMembers { private: typedef Loki::TL::MakeTypelist&lt;pair&lt;T1,i1&gt;, pair&lt;T2,i2&gt;, pair&lt;T3,i3&gt;, pair&lt;T4,i4&gt;, pair&lt;T5,i5&gt;, pair&lt;T6,i6&gt;, pair&lt;T7,i7&gt;, pair&lt;T8,i8&gt;, pair&lt;T9,i9&gt;, pair&lt;T10,i10&gt; &gt;::Result type_list; public: typedef Loki::GenScatterHierarchy&lt;type_list, holder&gt; Result; }; //usage class MyConstruct: public MakeTupleWithNamedMembers&lt;int, foo, float, quux&gt;::Result { }; </code></pre>
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    2. COomg... we can easily inject user-specified names for methods and variables into libraries' and frameworks' code, not only types. Voila composition of abstract structures with domain specifics like BinaryTree<FarthestNode, NearestNode> (usage will be pretty self-documenting).
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