IRC#ruby-lang
Ah good old Internet Relay Chat, haven’t used that in like ever. But found out that it’s the best source of help one could get on ruby.
Setup
I got a Mac, so I roll with Colloquy. Then connect to irc.freenode.net server and join ruby-lang channel. At first I kept getting warning about not being able to post messages. Turns out you must register with freenode server. So here it is, just type verbatim:
/msg nickserv help register
Follow instruction, check email then punch in:
/msg NickServ VERIFY REGISTER khoa **********
Select your password and all good to go.
And I learned that :: is called scope resolution operator from SteveKlanik.