{"image_url":null,"height":"190","url":"https://memo.sugyan.com/entry/20090708/1247044465","description":"\u3061\u3087\u3063\u3068\u601d\u3046\u3068\u3053\u308d\u3042\u3063\u3066\"355/113\"\u306e\u3088\u3046\u306a\u5186\u5468\u7387\u306b\u975e\u5e38\u306b\u8fd1\u3044\u5024\u3092\u8868\u305b\u308b\u5206\u6570\u306f\u306a\u3044\u304b\u3068\u601d\u3063\u3066\u3001\u305d\u308c\u3089\u3092\u6c42\u3081\u308b\u30ef\u30f3\u30e9\u30a4\u30ca\u30fc\u3092\u8003\u3048\u3066\u307f\u305f\u3002 perl -MMath::Trig -le '($a=$_*pi)=~/\\.(0{4}|9{4})/ && print int$a+$a=~/\\.9/,\" / $_\" for 1..100000'for\u6587\u3067\u63a2\u7d22\u3059\u308b\u7bc4\u56f2\u3001\u6b63\u898f\u8868\u73fe\u3067\u306e0\u307e\u305f\u306f9\u306e\u7e70\u308a\u8fd4\u3057\u306e\u6570\u3067\u7cbe\u5ea6\u3092\u8abf\u7bc0\u3002$a\u306e\u5024\u3092\u51fa\u529b\u3057\u3066\u307f\u308b\u3068\u308f\u304b\u308a\u3084\u3059\u3044\u304b\u3082\u3002 \u7d50\u679c\u8868\u793a\u306b/\\.9/\u3078\u306e\u30de\u30c3\u30c1\u3092\u4f7f\u3063\u3066\u7e70\u308a\u4e0a\u3052\u305f\u308a\u3068\u3001\u3061\u3087\u3063\u3068\u30c8\u30ea\u30c3\u30ad\u30fc\u306a\u3053\u3068\u3092\u3057\u3066\u308b\u3051\u3069\u3001\u3053\u308c\u3067\u3061\u3083\u3093\u3068\u6c42\u3081\u3089\u308c\u308b\u3063\u307d\u3044\u3002 $ perl -M\u2026","provider_name":"Hatena Blog","author_name":"sugyan","published":"2009-07-08 18:14:25","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmemo.sugyan.com%2Fentry%2F20090708%2F1247044465\" title=\"\u5186\u5468\u7387\u306e\u8fd1\u4f3c\u5024\u3068\u306a\u308b\u5206\u6570\u3092\u7b97\u51fa\u3059\u308b\u30ef\u30f3\u30e9\u30a4\u30ca\u30fc - \u3059\u304e\u3083\u30fc\u3093\u30e1\u30e2\" 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://memo.sugyan.com/","blog_title":"\u3059\u304e\u3083\u30fc\u3093\u30e1\u30e2","categories":["Perl","OneLiner"],"type":"rich","version":"1.0","title":"\u5186\u5468\u7387\u306e\u8fd1\u4f3c\u5024\u3068\u306a\u308b\u5206\u6570\u3092\u7b97\u51fa\u3059\u308b\u30ef\u30f3\u30e9\u30a4\u30ca\u30fc","provider_url":"https://hatena.blog","width":"100%","author_url":"https://blog.hatena.ne.jp/sugyan/"}