2013/8/21 Ralf Mattes <r...@seid-online.de> > On Wed, Aug 21, 2013 at 12:17:43PM +0200, Panicz Maciej Godek wrote: > > You're right, but it only works if you want to export only one symbol > > from a lexical scope. If you wanted a few procedures accessing > > a single scope, you'd either need to use the solution with 'set!', > > or -- as Taylan suggested -- have a "define-values" form. > > Yes, but was that the OP's question? > > Well, if the question is "to reduce scope of variable as much as possible", then I think that the issue of defining multiple procedures within the same scope is a part of that question, even if it wasn't posited directly
> > Actually, I think should also be possible to write a "define-values" > > macro using the method I presented > [... snip ...] > > but somehow we need to generate identifiers for symbol1 symbol2 ... > > (here I wrote symbolically value1 value2 ..., but I'd appreciate if > someone > > more competent could provide a syntax-rules-based solution) > > Maybe it's time to point out that this question is in the Scheme-FAQ ;-) > [http://community.schemewiki.org/?scheme-faq-language] - Section > "Is there a way to define top-level closures?" (sorry, bad webdesign, > no wa to link directlyto the topic). The answer not only mentions > 'define-values but also links to an implementation: > [http://community.schemewiki.org/?scheme-faq-macros#multidefine] > that uses 'syntax-rules > > Thanks! :)
