How does a List know that you changed it while enumerating it?

Everyone falls for that and tries to change a list while enumerating it greated by the System.InvalidOperationException: Collection was modified; enumeration operation may not execute. message. But how does the List know that you changed it? Let's find out.

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21/10/2022
3 min

Throwing exceptions - Why is my stack trace lost?

You might have read, that re-throwing an exception like this: throw exc; is considered bad practice and you should just do this: throw; instead.

But why is it like that?

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