Created
April 21, 2011 20:05
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lambda/prop in Racket
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#lang racket | |
(struct proc/prop (f v) | |
#:property prop:procedure 0) | |
(define (procedure-property p [fail #f]) | |
(if (proc/prop? p) | |
(proc/prop-v p) | |
fail)) | |
(define-syntax-rule (lambda/prop #:prop e formals . body) | |
(proc/prop (λ formals . body) | |
e)) | |
(provide lambda/prop procedure-property) |
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A sample interaction: