[plt-scheme] modules 4 newbies

From: Robby Findler (robby at cs.uchicago.edu)
Date: Thu Oct 16 16:08:55 EDT 2008

Probably tou want

  #lang scheme/gui

Also, I recommend that you start reading with what looks interesting
directly at docs.plt-scheme.org/ and instead of trying to use google
to search thru the docs, use the search bar at the top of that window.
Google is not very effective for this specialized search (and we try
to make our keyword-based search effective).


On Thu, Oct 16, 2008 at 3:02 PM, Raoul Duke <raould at gmail.com> wrote:
> hi,
> i'm a plt-clueless newbie trying to do some basic module stuff. i
> sorta figured out why things weren't working, but i still haven't
> managed to figure it all out yet and get it all working, so i'd like
> to ask for help!
> (A) comment on a newbie user experience: figuring out how to be able
> to write modules is way harder than it should be. i think it is due
> to:
> 1) how you write a module in a file depends on context. as i recently
> finally figured out, if you use "#lang scheme" then you do not use
> "(module..." [otherwise you get error messages which are not very
> helpful to the newbie :-].
> 2) the documentation which a newbie finds by googling around for
> things like "plt scheme module" do not explain that; it was only out
> of sheer luck and desperation that i finally checked
> http://docs.plt-scheme.org/quick/#(part._.Modules).
> 3) the complexity of the subject is probably the kind of thing that is
> hard to explain well in a static html/ascii form, rather than in
> person, and maybe plt scheme is 99% used in situations where there's a
> TA available? nevertheless if i ever figure out the nuances then
> hopefully future folks will google and stumble across this thread :-)
> (B) unfortunately, even though i now know why my use of "(module..."
> which is what the overwhelming majority of all docs i found told me to
> use was not right given that i had #lang scheme in there, which i was
> also doing because seemingly most all the intro docs told me to, i'm
> *still* lost as to how to make a module that works. if i remove the
> "#lang scheme" and try to (require scheme) i still get errors (like
> "expand: unbound variable in module in: new" because i'm trying to use
> scheme/gui/base's new frame%, new canvas%, etc.), and if i try to use
> "#lang scheme" instead then i don't see how i can actually create a
> new namespace for my stuff.
> any edification would be appreciated.
> thank you!
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