[plt-scheme] modules 4 newbies

(Just one note: if you use #lang scheme/gui as your first line, you'll
get the gui and class libraries right away without the extra require
line.)

Robby

On Thu, Oct 16, 2008 at 4:01 PM, Matt Jadud <jadudm at gmail.com> wrote:
> On Thu, Oct 16, 2008 at 4:15 PM, Raoul Duke <raould at gmail.com> wrote:
>> (if the PLT group can do anything to make the stuff show up better in
>> google, however, that would probably be good for newbies ;-)
>
> Another hint:
>
> #lang scheme
>
> sets the language of the module you are writing. Good.
>
> Now, if you want to include some libraries, you can do that:
>
> (require net/url)
>
> would load the "url" library in the "net" collection into your module.
> Likewise, you can load the GUI stuff in as well.
>
> (require mred/mred)
>
> At that point, I think you can write things like
>
> (define f (new frame% (label "Hi")))
> (send f show #t)
>
> and get an empty frame on the screen.
>
> So, if you've been reading about namespaces, go ahead and relax: it
> doesn't require that level of complexity so soon! Really, your module
> language is likely to be "scheme" or "scheme/base", and from there,
> you can require in the pieces that you need. Or, as has been
> mentioned, you can use some of the other language combos (eg.
> scheme/gui) which, I imagine, is effectively the same as requiring in
> the appropriate libraries.
>
> I'd also follow the advice of the previous posters about the
> documentation, how to search it reliably, and so on.
>
> Cheers,
> Matt
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