; ====================================================================== ; ; Structure and Interpretation of Computer Programs ; (trial answer to excercises) ; ; 计算机程序的构造和解释(习题试解) ; ; created: code17 03/06/05 ; modified: ; (保持内容完整不变前提下,可以任意转载) ; ======================================================================
;; SICP No.1.42
(define (compose f g) (lambda (x) (f (g x))))
;; Test-it: ;; Welcome to MzScheme version 209, Copyright (c) 2004 PLT Scheme, Inc. ;; > ((compose square inc) 6) ;; 49 ;; > ((compose inc square) 5) ;; 26

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