{"height":"190","provider_name":"Hatena Blog","title":" (gensym) \u306f\u30e6\u30cb\u30fc\u30af\u306b\u306a\u308b\u306e\u306b\u3001 `(symb#) \u306f\u30e6\u30cb\u30fc\u30af\u306b\u306a\u3089\u306a\u3044\u306e\u306f\u4f55\u6545\uff1f","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/ayato0211/","author_name":"ayato0211","width":"100%","published":"2015-04-16 00:04:15","categories":["Clojure","stackoverflow"],"url":"https://ayato.hateblo.jp/entry/20150416/1429110255","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayato.hateblo.jp%2Fentry%2F20150416%2F1429110255\" title=\" (gensym) \u306f\u30e6\u30cb\u30fc\u30af\u306b\u306a\u308b\u306e\u306b\u3001 `(symb#) \u306f\u30e6\u30cb\u30fc\u30af\u306b\u306a\u3089\u306a\u3044\u306e\u306f\u4f55\u6545\uff1f - (define -ayalog &#39;())\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://ayato.hateblo.jp/","type":"rich","image_url":null,"blog_title":"(define -ayalog '())","version":"1.0","description":"(gensym) is always unique, `(symb#) is not -- why?\u521d\u898b\u3060\u3068\u50d5\u3082\u898b\u4e8b\u306b\u5f15\u3063\u304b\u304b\u3063\u305f\u3002 (defmacro indirection [name & body] `(do (def name# ~@body) (defn ~name [] name#))) \u3053\u306e\u30de\u30af\u30ed\u306f\u4e00\u5ea6\u3057\u304b\u5c55\u958b\u3055\u308c\u306a\u3044\u306e\u3067\u3001\u5b9f\u884c\u3059\u308b\u5ea6\u306b\u3044\u3061\u3044\u3061\u5c55\u958b\u3055\u308c\u3066 name# \u306b\u9055\u3046\u540d\u524d\u304c\u3064\u304f\u3068\u601d\u3046\u306e\u306f\u9593\u9055\u3063\u3066\u3044\u308b\u3088\u3068\u3044\u3046\u8a71\u3002 \u307e\u3041\u3053\u3046\u3044\u3046\u66f8\u304d\u65b9\u304c\u305d\u3082\u305d\u3082\u30a4\u30b1\u3066\u306a\u3044\u306e\u3067\u3001 let \u3084 fn \u3092\u4f7f\u3063\u3066\u30ed\u30fc\u30ab\u30eb\u5909\u6570\u3092\u4f5c\u308d\u3046\u3088\u3068\u6700\u5f8c\u306b\u884c\u304d\u7740\u304f\u308f\u3051\u3067\u3059\u306d\u3002 (defmacro indirectio\u2026"}