On Thursday, February 11, 2016 at 9:08:33 AM UTC-8, Matthew Butterick wrote:
> I'm supposing you know that Racket has at least two native representations
> (X-expression and SXML) for HTML-like structures, so hacking HTML tags by
> hand is unnecessary.
Yes, thank you for mentioning them. I was actually thinking of starting with
SXML, but then turning it into a list of string fragments (with spaces left for
the dynamically generated parts) as a simplification step once I've figured out
where everything goes. But there are other languages besides HTML this is
relevant for.
(define (query condA condB (limit #f) (offset #f))
(list "SELECT something FROM table WHERE "
condA
" AND "
condB
(if limit
(list "LIMIT " limit
(if offset
(list "OFFSET " offset)
'()))
'())))
for instance.
> But if you must, there's a #lang for that:
I'll look at scribble/text, but I don't think a whole new language is necessary
just to factor if-statements inside out. I suspect it does a (flatten)
operation though, after having constructed a complex tree, since this problem
seems like a difficult one, and (flatten) really isn't all that much trouble. I
was just curious if it was possible to do this, but if I had to get
scribble/text ready to release to the masses I'd just throw a (flatten) in
there to splice the lists.
> Enjoy.
No problem!
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