Idiot's guide to Ruby

Mainly for php developers trying to make sense of ruby syntax

1. def send_message ------> public function sendMessage
2. begin rescue end ---> try catch
3. to_s ---> to string
4. $! ---> get_last_error()
5. self.save! ---> just a convention notifying side effect
6. user.is_admin? --> convention notifying it returns a boolean 
7. user.send_message ---> $user.sendMessage() - no need for () if there are no parameters
8. self.account_id ---> $this->account_id
9. user.do_something(self) ---> $user->doSomething($this)