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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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.NET – Putting a base in the middle (Eric Lippert – Fabulous Adventures In Coding)

Posted by jpluimers on 2010/05/14

I always tend to recompile assemblies when something changes they depend upon.

But now I’m even more careful after reading Fabulous Adventures In Coding : Putting a base in the middle.
Especially his checklist is important.

When you use a newer version of an assembly you depend on:

(1) at the very least test your derived types with the new base type — your derived types are relying on the mechanisms of the base types; when a mechanism changes, you have to re-test the code which relies upon that mechanism.

(2) if there was a breaking change, recompile, re-test and re-ship the derived type. And

(3) you might be surprised by what is a breaking change; adding a new override can potentially be a breaking change in some rare cases.

–jeroen

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