On Dec 17, 2012, at 10:51 PM, Haiwei Zhou wrote: > Hi, > > I am writing some code with json. Request may look likes (hasheq 'action > "doit" 'arg1 "a" 'arg2 "b"). > > Is there any function or library which can apply a proc with hasheq? The > expected result is (proc #:action "doit" #:arg1 "a" #:args "b")?
I think the easiest way to do this would be to use "match" inside the body of
the procedure being defined. So:
(define (hashy-proc ht)
(match ht
[(hash-table ("action" a) ("arg1" a1) ("arg2" a2))
... code that uses a and a1 and a2 ...])
If this is too verbose for you, you could hide it using a macro, so that it
looks like
(define-hashproc (proc #:action a #:arg1 a1 #:arg2)
... code that uses a and a1 and a2...)
... but I would try it first with the first form, to see whether you can live
with it.
That's my thought, anyhow.
John Clements
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