[boost] [mpl] easy access to inherit_linearly elements

From: Larry Evans (cppljevans_at_[hidden])
Date: 2005-01-15 02:03:42

The code in:

   http://boost-sandbox.sourceforge.net/vault/inherit_linearly_test.cpp

provides easy access to the elements of inherit_linearly with:

   get_tail<inherit_linearly<...>, i>::head_type

which returns the i-th element in the inheritance heirarchy.  Couldn't
this be used to generate member names using templates?  For example,
the "name" of the i-th value on p. 191 of the

   _C++ Template Metaprogramming_

book would be:

   r.get_tail<inherit_linearly<...>, i>::head_type::value

where r is an instance of:

   inherit_linearly<types, inherit_head_tail<wrap<_2>,_1> >::type