Is there a way for a function to tell how many values it’s caller expects it to
return?
I’ve tried this and it didn’t work:
#lang racket
(define (show-k-arity)
(let/ec k
(error 'print-k-arity "the arity of k is ~v" (procedure-arity k))))
(let-values ([(x y) (show-k-arity)]) (void))
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