When people work with the Dictionary class in .Net there are two common assumptions that I see used a lot. Worst part is that these assumptions are both wrong.
One question that comes up quite often is if you should always use async/await or not. Sadly enough the answer is not simple because there is a trade-off between performance and ease of understanding exceptions.
Lately I've been discussing estimation a lot with both colleagues and friends so I guess it is time to go at it again. As I've mentioned several times before; I'm not a believer in estimates. The process of estimating is good in order to understand and break down complex problems but the estimate itself as limited (if any) value in my opinion.
I recently listened to a developer podcast about the async/await feature in .Net. And I was terrified when the host asked about using those key words in the constructor.
I try to live by the motto; starting the debugger is a failure when it comes to code I write. That means that through logging and just reading the code it should be possible to figure out what is going on in my code. However quite often I have to work with code I did not write and then some advanced breakpoint tricks come in handy.
Most people I've worked with that needed a collection of some sort have implemented the collection by inheriting from one of the standard collection classes. This is however typically not the right thing to do since you expose more functionality than you really want in many cases.
From time to time people implement something that they want to use in a fire-and-forget fashion. Typically it is some non-critical service you want to notify. Sadly most people get this wrong since they don't understand what fire-and-forget means and instead fire blindly.