Re: [Boost-users] bimap: one to many

El 12/03/2020 a las 21:53, MM via Boost-users escribió:

Hello I want a collection to store a relationship N to M like so:

Item of type A                 Item of type B A1                                    B1,B2,B3 A2                                    B4 A3                                    B1

and I would like a convenient way to get from a A instance to the list of B instances, and vice versa, from a given B instance to the list of A instances.

At runtime, the A objects are created first, then a list of B objects is created. Later, B objects get modified asynchronously and that modification need to update the relevant A instances

what container to use?

boost::bimap< unordered_set , unordered_set >

As the relationship is N:M, you'll want something like  boost::bimap< unordered_multiset_of , unordered_multiset_of > Joaquín M López Muñoz