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joelmccracken/begin2.ss

Created December 23, 2008 17:20
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begin2.ss
(define-syntax begin2
(syntax-rules ()
[(begin2 a) (a)]
[(begin2 a b ...) ((begin3 b ...) a)]))
(define-syntax begin3
(syntax-rules ()
[(begin3 a) (lambda (unique-plz) a)]
[(begin3 a b ...) (lambda (unique-plz) ((begin3 b ...) a))]))
; example code, displaying the abilities of function composition and macros.
(begin2 (display "1") (display "2") (display "3") (display "4") (display "5") (display "6") (+ 2 3))
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