{"url":"https://kakts.dev/entry/scheme%E3%81%A7%E3%81%AEnil%E3%81%AE%E6%89%B1%E3%81%84%E6%96%B9","published":"2015-08-21 03:55:00","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkakts.dev%2Fentry%2Fscheme%25E3%2581%25A7%25E3%2581%25AEnil%25E3%2581%25AE%25E6%2589%25B1%25E3%2581%2584%25E6%2596%25B9\" title=\"scheme\u3067\u306enil\u306e\u6271\u3044\u65b9 - kakts-log\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"sicp\u3092\u7a7a\u304d\u6642\u9593\u3092\u307f\u3064\u3051\u3066\u8aad\u307f\u9032\u3081\u3066\u3044\u3066\u3001\u3088\u3046\u3084\u304f\uff12\u7ae0\u76ee\u306b\u7a81\u5165\u3057\u3066\u3044\u307e\u3059\u3002nil\u3082\u3057\u304f\u306fnull\u3092\u4f7f\u3063\u305f\u969b\u306b\u51fa\u308b\u30a8\u30e9\u30fc\u306b\u3064\u3044\u3066\u6c17\u306b\u306a\u3063\u305f\u306e\u3067\u30e1\u30e2\u3002scheme\u51e6\u7406\u7cfb(\u4e3b\u306bgauche)\u306b\u304a\u3044\u3066\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3059\u308b\u969b\u3001nil\u3092\u4f7f\u3046\u3068\u5b9f\u884c\u6642\u306b\u4ee5\u4e0b\u306e\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3057\u307e\u3046\u3002;Unbound variable: nilhttp://stackoverflow.com/questions/9115703/null-value-in-mit-scheme\u8abf\u3079\u3066\u307f\u308b\u3068\u3001\u4e0a\u8a18\u306estack overflow\u306e\u30a8\u30f3\u30c8\u30ea\u306b\u3042\u308b\u3088\u3046\u306b\u3001\u304b\u3064\u3066scheme\u51e6\u7406\u7cfb\u3067\u306fnil\u3092\u4f7f\u3048\u305f\u304c\u3001\u3044\u307e\u3067\u306f\u4f7f\u3048\u305a\u3001\u4ee3\u308f\u308a\u306b '() \u306b\u7f6e\u304d\u63db\u2026","height":"190","provider_url":"https://hatena.blog","blog_url":"https://kakts.dev/","version":"1.0","categories":[],"type":"rich","title":"scheme\u3067\u306enil\u306e\u6271\u3044\u65b9","author_name":"kakts","image_url":null,"provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/kakts/","blog_title":"kakts-log","width":"100%"}