{"url":"https://masasuzu.hatenablog.jp/entry/20110225/1298726851","blog_url":"https://masasuzu.hatenablog.jp/","type":"rich","width":"100%","blog_title":"\u76ee\u306e\u524d\u306b\u50d5\u3089\u306e\u9053\u304c\u3042\u308b","categories":["perl"],"author_name":"masasuz","description":"\u4f55\u6c17\u306a\u3057\u306b\u30bd\u30fc\u30b9\u3092\u773a\u3081\u3066\u307f\u305f\u3089\u77ed\u304b\u3063\u305f\u306e\u3067\u8a66\u3057\u3066\u307f\u305f\u3002 \u3068\u308a\u3042\u3048\u305a\u3001\u899a\u3048\u308b\u3079\u304d\u306f\u3001instance()\u3068has_instance()\u3001_new_instance()\u306e\u307f\u3002 instance() \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u8fd4\u3059\u3002\u307e\u3060\u751f\u6210\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f_new_instance()\u3092\u547c\u3093\u3067\u65b0\u3057\u3044\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3002 has_instance() \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u751f\u6210\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001undef\u3092\u8fd4\u3059\u3002 _new_instance() \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210\u3059\u308b\u3002\u3053\u3053\u306b\u521d\u671f\u51e6\u7406\u3092\u66f8\u3044\u3066\u3084\u308b\u3068\u3044\u3044\u3067\u3057\u3087\u3046\u3002 \u5168\u7136\u30a8\u30c3\u30bb\u30f3\u30b9\u304c\u3060\u3051\u3092\u8a70\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u304b\u3063\u305f\u3093\u3067\u3059\u304c\u3001\u3053\u3093\u306a\u611f\u3058\u306e\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3057\u305f\u3002 use com\u2026","author_url":"https://blog.hatena.ne.jp/masasuz/","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmasasuzu.hatenablog.jp%2Fentry%2F20110225%2F1298726851\" title=\"Class::Singleton\u3092\u8a66\u3057\u3066\u307f\u308b\u3002 - \u76ee\u306e\u524d\u306b\u50d5\u3089\u306e\u9053\u304c\u3042\u308b\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2011-02-25 22:27:31","title":"Class::Singleton\u3092\u8a66\u3057\u3066\u307f\u308b\u3002","version":"1.0","provider_url":"https://hatena.blog","height":"190","provider_name":"Hatena Blog"}