kj-ki https://blog.hatena.ne.jp/kj-ki/ kj-ki’s blog https://kj-ki.hatenablog.com/ Scheme 文字列を複製する そのまんま，string-copyで複製できます． (string-copy string &optional start end) 使用例． (string-copy "複製元の文字列") =>"複製元の文字列" (let* ((str "複製元の文字列") (copy-str (string-copy str))) `(,(eq? str str) ,(eq? str copy-str) ,(equal? str copy-str) ,(string=? str copy-str))) => (#t #f #t #t) 複製なので，(eq? str copy-str)は#… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkj-ki.hatenablog.com%2Fentry%2F20091217%2Fp1" title="文字列を複製する - kj-ki’s blog" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2009-12-17 00:00:00 rich https://kj-ki.hatenablog.com/entry/20091217/p1 1.0 100%