{"blog_title":"\u5e30\u3063\u3066\u304d\u305fYet Another \u308f\u3063\u307b\u3044","description":"prime-sum-pairs\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u3059\u308b\u305f\u3081\u306bunique-pairs\u3063\u3066\u95a2\u6570\u3064\u304f\u308c\u3063\u3066\u5207\u308a\u51fa\u3059\u3060\u3051\u3067\u306a\u3044 (define (unique-pairs n) (flatmap (lambda (i)(map (lambda (j) (list i j)) (enumerate-interval 1 (- i 1)))) (enumerate-interval 1 n)))","author_name":"xenop","categories":["SICP"],"type":"rich","url":"https://xenop.hateblo.jp/entry/20080810/1218552048","title":"Exercise 2.40","version":"1.0","published":"2008-08-10 23:40:48","provider_url":"https://hatena.blog","blog_url":"https://xenop.hateblo.jp/","provider_name":"Hatena Blog","image_url":null,"width":"100%","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fxenop.hateblo.jp%2Fentry%2F20080810%2F1218552048\" title=\"Exercise 2.40 - \u5e30\u3063\u3066\u304d\u305fYet Another \u308f\u3063\u307b\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/xenop/"}