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====== I found a library that claims to do DCI, how can I know that it does? ======
Stay alert for a wrapper solution for the Roles. Unfortunately many libraries claiming to do DCI ignores that [[Why isn't it DCI if you use a wrapper object to represent the Role?|object identity must be preserved]] for Roles. Ask the library author about wrappers if you're unsure, and if the answer isn't fully clear about preserved object identity for Roles (which isn't the same as object equality), the library is probably not doing true DCI. 

Solving the object identity issue for today's popular programming languages is not that simple, so a library doing that will probably promote it in the documentation or on its webpage. That's not a rule of course, but the difference between someone who is creating a library for testing purposes and someone with in-depth knowledge of the [[http://folk.uio.no/trygver/2012/DCIExecutionModel-2.1.pdf|DCI execution model]], can be quite big.

The [[Existing DCI Implementations]] page on this site is a reliable source of proper DCI implementations.

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