1 // Copyright David Abrahams 2002.
2 // Distributed under the Boost Software License, Version 1.0. (See
3 // accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt)
5 #ifndef DEPENDENT_DWA200286_HPP
6 # define DEPENDENT_DWA200286_HPP
7 
8 namespace boost { namespace python { namespace detail {
9 
10 // A way to turn a concrete type T into a type dependent on U. This
11 // keeps conforming compilers (those implementing proper 2-phase
12 // name lookup for templates) from complaining about incomplete
13 // types in situations where it would otherwise be inconvenient or
14 // impossible to re-order code so that all types are defined in time.
15 
16 // One such use is when we must return an incomplete T from a member
17 // function template (which must be defined in the class body to
18 // keep MSVC happy).
19 template <class T, class U>
20 struct dependent
21 {
22     typedef T type;
23 };
24 
25 }}} // namespace boost::python::detail
26 
27 #endif // DEPENDENT_DWA200286_HPP
28