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takikawa/gist:2955868

Created June 19, 2012 18:52
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contracted shift/reset
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gistfile1.rkt
#lang racket
(require racket/control)
(define/contract pt
(prompt/c (-> (-> integer? integer?)))
(make-continuation-prompt-tag))
(define f
(reset0-at pt
(+ 1 (shift0-at pt k k))))
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