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Brilliant exception handling I found in an app i had to work on (media.kbin.social)

submitted 1 year ago by Zadyra@kbin.social to c/programmerhumor@lemmy.ml

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Brilliant exception handling I found in an app i had to work on

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[–] ipkpjersi@lemmy.one 1 points 1 year ago (1 children)

Actually, exception rethrowing is a real thing - at least in Java. You may not always want to handle the exception at the absolute lowest level, so sometimes you will instead "bubble" the exception up the callstack. This in turn can help with centralizing exception handling, separation of concerns, and making your application more modular.

It seems counter-intuitive but it's actually legit, again at least in Java. lol

[–] TwilightKiddy@programming.dev 1 points 1 year ago (1 children)

Rethrowing caught exception in C# is just throw;, not throw ex;. This will delete old stack trace, which is very punishable if someone debugs your code later and you're still around.

[–] bartimeo@lemmy.world 0 points 1 year ago (1 children)

I am a somewhat new C# developer (2 years). Could you explain more about this?

[–] TwilightKiddy@programming.dev 1 points 1 year ago

throw ex; treats ex as a new exception, so, it starts a new stack trace for it from itself and deletes stack trace that was saved in ex.StackTrace. On the other hand, throw; takes already present exception in the scope and throws it without modifying the stack trace, preserving the original method that threw ex in the stack trace.

I feel like I wrote the same thing twice. I'm a bit bad with explaining stuff, feel free to ask more specific questions if you still don't understand the difference.