Simple C++ question

Hi,
My question is about the methods 'UserJoined' and 'UserLeft', when do they execute?

Meaning that, by the time UserJoined executes, does the this.Users[] array already have the new user in it? And, by the time UserLeft executes, does the this.Users[] array no longer have the user in it?

Thanks!

"by the time UserJoined executes, does the this.Users[] array already have the new user in it"

I'm pretty sure it does, yes, but it's also very simple to test - just do Users.Length