One of the problems with Ruby being so popular is that any google search
with “Ruby tutorial” or similar turns up about 8-bazillion pages, and
they all want you to dive right in to see how easy everything is.
…Which is really cool – BUT!
I’m having trouble groking the difference between foo, @foo, :foo,
#{foo}, [foo] {:#[foo]} (ok, I made that one up), etc. About the only
one I feel like I understand is $foo – but how often am I going to use
THAT?! (Hint: very-nearly “never.”)
(Heh. $ means “global”, right? I haven’t used a global var in the most
recent 15 yrs of programming…)
(Ok, and I sort-of get :foo, but not well enough to describe it, which
means “not really.”)
So, anyway… don’t TELL me the difference (well, you can if you want)
– what I’m REALLY asking is: what is a good reference that describes
all of these things, and how they’re different?
Thanks!