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  <author_name>tanakaBox</author_name>
  <author_url>https://blog.hatena.ne.jp/tanakaBox/</author_url>
  <blog_title>ボクノス</blog_title>
  <blog_url>https://boxnos.hatenablog.com/</blog_url>
  <categories>
    <anon>Scheme</anon>
  </categories>
  <description>accumulateと書くのが面倒なので、互換性のあるsrfi-1のfold-rightを使います。ついでにsrfi-26もお試しで。 問題 2.23 穴埋め問題。軽い軽い。 (define (map p sequence) (fold-right (lambda (a b) (cons (p a) b)) '() sequence)) (map (cut + 10 &lt;&gt;) (iota 10)) ; (10 11 12 13 14 15 16 17 18 19) (define (append seq1 seq2) (fold-right cons seq2 seq1)) (append (l…</description>
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  <image_url></image_url>
  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2007-10-22 22:11:44</published>
  <title> SICPを読む(55) 問題 2.33 - 2.35 accumulateの問題</title>
  <type>rich</type>
  <url>https://boxnos.hatenablog.com/entry/20071022/1193058704</url>
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