{"published":"2021-01-13 13:20:30","url":"https://obelisk.hatenablog.com/entry/2021/01/13/132030","image_url":null,"version":"1.0","width":"100%","blog_title":"Camera Obscura","height":"190","description":"Ruby \u3092\u4f7f\u3063\u3066\u3044\u308b\u3068\u30d3\u30c3\u30c8\u64cd\u4f5c\u306f\u3042\u307e\u308a\u5fc5\u8981\u306a\u306e\u3060\u304c\u3001\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3084\u3063\u3066\u3044\u305f\u308a\u3059\u308b\u3068\u6642\u306b\u306f\u30d3\u30c3\u30c8\u64cd\u4f5c\u3057\u305f\u304f\u306a\u308b\u3053\u3068\u3082\u3042\u308b\u3002\u3067\u3001Ruby \u3092\u3042\u3089\u305f\u3081\u3066\u898b\u3066\u307f\u308b\u3068\uff08\u5f53\u308a\u524d\u3060\u304c\uff09\u30d3\u30c3\u30c8\u64cd\u4f5c\u3082\u4e00\u901a\u308a\u63c3\u3063\u3066\u3044\u308b\u308f\u3051\u3060\u3002\u7af6\u30d7\u30ed\u3067\u4fbf\u5229\u3060\u306a\u3068\u601d\u3046\u306e\u306f\u4f8b\u3048\u3070\u300c\u30d3\u30c3\u30c8\u306e\u7acb\u3063\u3066\u3044\u308b\u300d\u3082\u306e\u3092\u6570\u3048\u308b\u3001\u3064\u307e\u308a\u6574\u6570\u3092\u4e8c\u9032\u6570\u8868\u73fe\u306b\u76f4\u3057\u3066 \"1\" \u306e\u6570\u3092\u6570\u3048\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3001Ruby \u3067\u306f to_s(2).chars.count { _1 == \"1\" } #\u8ffd\u8a18 \u4ee5\u4e0b\u3067\u3088\u3044 to_s(2).count(\"1\") \u3068\u7c21\u6f54\u306b\u66f8\u3051\u308b\u3002 \u307e\u305f\u3001\u3044\u308f\u3086\u308b\u300c\u30d3\u30c3\u30c8\u5168\u63a2\u7d22\u300d\u306f\u3001Ruby \u3067\u306f\u30d3\u30c3\u30c8\u3092\u4f7f\u308f\u306a\u304f\u3066\u3082\u7c21\u5358\u306b\u66f8\u3051\u308b\u3002\u4f8b\u3048\u3070\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fobelisk.hatenablog.com%2Fentry%2F2021%2F01%2F13%2F132030\" title=\"\u30d3\u30c3\u30c8\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\u4e09\u984c\uff08Ruby\uff09 - Camera Obscura\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","title":"\u30d3\u30c3\u30c8\u64cd\u4f5c\u30e1\u30bd\u30c3\u30c9\u4e09\u984c\uff08Ruby\uff09","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/obelisk2/","categories":["Ruby"],"author_name":"obelisk2","blog_url":"https://obelisk.hatenablog.com/","provider_name":"Hatena Blog"}