[gambit-list] Is (void) distinct from all other types?

Vok Vojwo ceving at gmail.com
Fri Oct 28 07:35:07 EDT 2011


Is (void) distinct from all other types?

Is this a proper way to check if anything is undefined?

(let ()
  (define a)
  (eq? a (void)))

I think (define a) does not conform to RnRS, because define requires
two arguments. Is there a RnRS conforming way to check if anything is
undefined/unspecified?



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