[Boost-users] [multi-index] multi-index type trait

Subject: [Boost-users] [multi-index] multi-index type trait
From: Elizabeta (elizabeta.petreska_at_[hidden])
Date: 2015-08-17 16:10:32

Hi 
how to test if the first index of boost::multi-index is key based or
sequence based at compile time.  I need to write something like this :

     template<class T,class M>
     void f(T& object,typename
boost::enable_if<first_index_is_sequence&lt;T>>::type* dummy = 0)
    {
          M element;
          object.push_back(element);
    }

     template<class T,class M>
     void f(T& object,typename
boost::enable_if<first_index_is_key&lt;T>>::type* dummy = 0)
    {
          M element;
          object.insert(element);
    }

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