[n00b] Need a good reference for var-types/string-esc, etc

ruby-talk
1

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!

···

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Posted via http://www.ruby-forum.com/.

2

Olie D. wrote:

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!

Dave Thomas' _Programming_Ruby_ is the canonical Ruby reference.

···

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3

Quoth Olie D.:

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!

···

--
Konrad Meyer <konrad@tylerc.org> http://konrad.sobertillnoon.com/