[Boost-users] question on multi_index_container

Subject: [Boost-users] question on multi_index_container
From: John M. Dlugosz (mpbecey7gu_at_[hidden])
Date: 2012-10-31 12:47:03

I created a multi_index_container in a way to emulate and enhance a std::set.  That is, 
ordered_unique on some key extraction I specified.
Like a std::set, inserting a "duplicate" will not do the assignment at all and the old 
value remains.  However, what I want is for the new item to replace the old with the same 
key.

Is there an easy or straightforward way to configure multi_index_container to do this?