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a guest Nov 13th, 2019 93 Never
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  1. (define-syntax my-if
  2.   (syntax-rules ()
  3.     ((_ condition then_action else_action) (begin (let ((a (delay then_action))
  4.                                                         (b (delay else_action)))
  5.                                                     (or (and condition (force a)) (force b)))))))
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