by chance i had a look into my bin\debug folder and found some "strange" files like:
The "regular" ones are named like: __TomLibVirt.dll
I suspect that may be result of some problems i had, but i'm curious - probably i should simply delete them and forget?
I had such files too from time to time and was wondering where they are coming from. Just yesterday I realized they are created when you try to compile an app that is already running, when this happens, the existing dll/exe gets renamed to that strange file name.
Guess that's a feature of roslyn, tried to search about this, but did not find anything. Maybe Robert has further info?