C# has low barriers to entry and forgives a lot. Seriously, you may not understand how things work under the hood but still write code and remain easy-going about this. Though you still have to deal with different nuances over time. Today, we’ll look at one of such subtle aspects – handling enumerations.

We don’t often get the chance to write something on parallel programming issues. This time we “got lucky”. The TraceEvent standard method has some implementation peculiarities. They resulted in an error with multiple threads blocking. So we’d like to warn users about this nuance and cover this interesting case from our users support practice. Why was our support involved? Keep reading to find out. Enjoy the reading!

Do you like the ?. operator? Well, who doesn’t? Many people like these concise null checks. However, today’s article shows that the ?. operator may be tricky sometimes. That is, it can create an illusion of safety when used in the foreach loop.