One thing to add to this discussion. If your RandomFunction() is asynchronous, then the compiler will expect an await usage. Some people seem to use "_ = RandomFunction()" when they could use "await RandomFunction()". The compiler, I assume, replaces "_" with something like "temp-var = await RandomFunction();". It is also, as has been pointed out, marked as uninteresting.

So, the point seems to be to get the compiler to stop barking while saving typing. Maybe there is more to it than this?