Great idea!
Neil ⊥
On 04/17/2014 05:00 PM, Sam Tobin-Hochstadt wrote:
I think you should do 2': Change racket/match to recognize patterns
with #'flvector heads -- ie, use the binding for flvector from
`racket/flonum` to determine if something matches.
The use of symbolic names in match, rather than bindings, is a
leftover rather than something we should keep adding to.
Sam
On Thu, Apr 17, 2014 at 6:48 PM, Neil Toronto <neil.toro...@gmail.com> wrote:
It would be really handy for me right now to be able to match on flvectors,
and I think it's useful enough for minimal Racket. I've already tried this
option:
1. Export flvector as a match expander from racket/flonum
but racket/match depends on racket/flonum somehow. So I looked through the
match code and determined that this one would be pretty easy:
2. Change racket/match to recognize patterns with 'flvector head
(The code is very clean; kudos to whoever last rewrote it. :D)
I think #2 would at worst hijack someone's custom flvector match expander,
but probably do the same thing or better (e.g. also handle ellipses). But in
case it's worse than I think, I can always go with this:
3. Export flvector as a match expander from math/flonum
Question for the match and syntax gurus: would doing #2 be safe enough, or
should I do #3? Or have I got it backwards; i.e. is #2 actually safer than
#3?
Neil ⊥
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