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POAre there costs associated with inverse_of? Should we add it to relationships wherever possible?
 

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    1. CO+1, would really like to know. AFAIK i can only see benefits. Guess it will become a default behaviour in later rails version
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    2. COthat's what i'm wondering - it seems like this should be default included on every relationship. The only downside I could think of as a possibility is that maybe it could affect server performance if objects become larger as a result (maybe taking up a lot of memory?). This is not something I know much about though..
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    3. COyup, but the downside would be seriously countered by the fact that you don't fetch the same object twice and don't have two copies of the same object in memory... The only reason i can see here is that it's not so frequent that you do something like `ParentObject.child_objects.first.parent_object`
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