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How should you handle errors in your code? This has been a topic of many discussions, and I want to share my opinion. One school of thought suggests using exceptions for flow control. This is not a good approach because it makes the code harder to reason about. The caller must know the implementation details and which exceptions to handle. Exceptions are for exceptional situations. Exceptions are also costly and degrade performance. If you don't believe me, we'll prove it in this video.

GitHub thread: https://github.com/dotnet/aspnetcore/issues/46280#issuecomment-1527898867

Functional Error Handling in .NET With the Result Pattern

https://www.milanjovanovic.tech/blog/functional-error-handling-in-dotnet-with-the-result-pattern

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Chapters

0:00 Are exceptions expensive?

3:14 Exceptions for flow control

7:38 Performance testing exceptions

10:23 Handling errors with Result pattern

14:11 Performance testing Result pattern

15:30 Result pattern drawbacks