{"author_name":"higepon","width":"100%","url":"https://higepon.hatenablog.com/entry/20070831/1188575431","blog_title":"higepon blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhigepon.hatenablog.com%2Fentry%2F20070831%2F1188575431\" title=\" \u30de\u30af\u30ed\u306e\u30de\u30c3\u30c1\u30f3\u30b0\u3092\u5b9f\u88c5\u3057\u3088\u3046 - 2. On Lisp \u306e\u30de\u30c3\u30c1\u30f3\u30b0\u30b3\u30fc\u30c9 - higepon blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":" \u30de\u30af\u30ed\u306e\u30de\u30c3\u30c1\u30f3\u30b0\u3092\u5b9f\u88c5\u3057\u3088\u3046 - 2. On Lisp \u306e\u30de\u30c3\u30c1\u30f3\u30b0\u30b3\u30fc\u30c9","type":"rich","height":"190","description":"On Lisp\u306e\u300c18.4 \u30de\u30c3\u30c1\u30f3\u30b0\u300d\u306b\u51fa\u3066\u304d\u305f\u30b3\u30fc\u30c9\u3092\u7406\u89e3\u3057\u3001Scheme \u3067\u66f8\u304d\u76f4\u3059\u3002 \u672c\u4e38\u306e match \u306f\u5f8c\u56de\u3057\u306b\u3057\u3001varsym? \u3068 binding \u3092\u66f8\u304f\u3002 varsym? varsym? \u306f\u7c21\u5358\u3002 x \u304c\u30d1\u30bf\u30fc\u30f3\u5909\u6570\u304b\u3069\u3046\u304b\u3092\u8fd4\u3059\u3002\u3042\u3089\u304b\u3058\u3081\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u304a\u3044\u305f\u3002 (define (varsym? x) (and (symbol? x) (char=? (string-ref (symbol->string x) 0) #\\?))) (assert-check-true \"varsym?\" (varsym? '?x) (varsym? '?y) (varsym? '?abc)\u2026","author_url":"https://blog.hatena.ne.jp/higepon/","categories":["scheme"],"published":"2007-08-31 00:50:31","image_url":null,"version":"1.0","provider_name":"Hatena Blog","blog_url":"https://higepon.hatenablog.com/","provider_url":"https://hatena.blog"}