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Another related effect of this is Protocol Ossification [0] which happens when implementers of a public API/Protocol surface area take implicit dependencies on common but not standardized behaviors of the API/Protocol implementation.

That being said, you can take proactive steps to defeat this. For example, the default Hash for strings in .NET is randomly seeded each time a process starts[1] in order to strongly dissuade folks from taking an implicit dependency on the underlying algorithm which is not guaranteed to be stable

[0] : https://en.wikipedia.org/wiki/Protocol_ossification

[1] : https://andrewlock.net/why-is-string-gethashcode-different-e...






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