{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.cryolite.net%2Fentry%2F20040225%2Fp1\" title=\"boost::optional - Cry&#39;s Blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","title":"boost::optional","author_url":"https://blog.hatena.ne.jp/Cryolite/","blog_title":"Cry's Blog","description":"boost::optional\u3092\u89e6\u3063\u3066\u307f\u305f\u304c\uff0c\u3069\u3046\u3084\u3089deep copy\u306esemantics\u3092\u6301\u3064\uff08\u30b9\u30de\u30fc\u30c8\uff09\u30dd\u30a4\u30f3\u30bf\u3068\u3044\u3046\u89e3\u91c8\u3067\u3088\u3044\u3088\u3046\u3060\uff0e \u5024\u8fd4\u3057\u306e\u8fd4\u308a\u5024\u306e\u751f\u6210\u304c\u697d\u306a\u306e\u304c\u30dd\u30a4\u30f3\u30bf\u3068\u5927\u304d\u304f\u9055\u3046\u304b\u306a\uff1f \u3061\u3085\u30fc\u304b\uff0c\u5b9f\u88c5\u8997\u3044\u3066\u307f\u305f\u304c\u3048\u3089\u3044\u7c21\u5358\u3067\u3059\u306a\u3041\u30fb\u30fb\u30fb","author_name":"Cryolite","blog_url":"https://blog.cryolite.net/","version":"1.0","url":"https://blog.cryolite.net/entry/20040225/p1","image_url":null,"type":"rich","height":"190","categories":["\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","C++","BOOST"],"width":"100%","published":"2004-02-25 00:00:00"}