{"version":"1.0","image_url":null,"title":" 2.2.3 \u5165\u308c\u5b50\u306b\u306a\u3063\u305f\u5199\u50cf\u306e\u9806\u5217\u304b\u3089\u306a\u308b\u914d\u5217\u3092Python\u3067\u3084\u3063\u3066\u307f\u305f...\u3051\u3069\u3067\u304d\u306a\u304b\u3063\u305f(\u00b4\uff65\u03c9\uff65`)...\u3068\u601d\u3063\u305f\u3089\u3067\u304d\u305f(\u30fb\u2200\u30fb)","published":"2008-07-09 00:00:01","url":"https://cortyuming.hateblo.jp/entry/20080709/p1","height":"190","provider_name":"Hatena Blog","blog_url":"https://cortyuming.hateblo.jp/","categories":["SICP","Python"],"type":"rich","author_url":"https://blog.hatena.ne.jp/CortYuming/","width":"100%","author_name":"CortYuming","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcortyuming.hateblo.jp%2Fentry%2F20080709%2Fp1\" title=\" 2.2.3 \u5165\u308c\u5b50\u306b\u306a\u3063\u305f\u5199\u50cf\u306e\u9806\u5217\u304b\u3089\u306a\u308b\u914d\u5217\u3092Python\u3067\u3084\u3063\u3066\u307f\u305f...\u3051\u3069\u3067\u304d\u306a\u304b\u3063\u305f(\u00b4\uff65\u03c9\uff65`)...\u3068\u601d\u3063\u305f\u3089\u3067\u304d\u305f(\u30fb\u2200\u30fb) - \u724c\u8a9e\u5099\u5fd8\u9332 -pygo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u724c\u8a9e\u5099\u5fd8\u9332 -pygo","provider_url":"https://hatena.blog","description":"SICP\u306e2.2.3 Hierarchical Structures \u306e Nested Mappings\uff08\u5165\u308c\u5b50\u306b\u306a\u3063\u305f\u5199\u50cf\uff09\u306e the sequence of permutations of S - x\uff08S-x\u306e\u9806\u5217\u304b\u3089\u306a\u308b\u914d\u5217\uff09\u3092 Python \u3067\u3084\u3063\u3066\u307f\u305f...\u3051\u3069\u304d\u306a\u304b\u3063\u305f(\u00b4\uff65\u03c9\uff65`) ...\u3068\u601d\u3063\u305f\u3089\u3067\u304d\u305f(\u30fb\u2200\u30fb) scheme \u6b63\u5e38 ;Code used in Sequence Operations (define (filter predicate sequence) (cond ((null? sequence) ()) ((predicate (car sequence)\u2026"}