{"provider_name":"Hatena Blog","title":" MongoDB\u306e64bit\u6574\u6570\u578b\u304c\u601d\u3063\u305f\u3088\u308a\u5c0f\u3055\u304b\u3063\u305f","blog_url":"https://crumbjp.hateblo.jp/","width":"100%","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcrumbjp.hateblo.jp%2Fentry%2F20130502%2F1367483865\" title=\" MongoDB\u306e64bit\u6574\u6570\u578b\u304c\u601d\u3063\u305f\u3088\u308a\u5c0f\u3055\u304b\u3063\u305f - \u4e2d\u5e74engineer\u306e\u72ec\u308a\u8a00 - crumbjp\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"categories":["mongodb"],"published":"2013-05-02 17:37:45","version":"1.0","description":"\u3054\u5b58\u3058\u306e\u69d8\u306b\u3001MongoDB\u306e\u6570\u5024\u578b(number)\u306ffloat(64-bit) \u3060\u3002 number ( 64-bit float) : double \u6307\u6570\u90e8 52 bit\uff08\u7cbe\u5ea6\u306f53 bit\uff09 \u4eee\u6570\u90e8 11 bit \u7b26\u53f7 1 bit \u306a\u306e\u30670x20000000000001=2^53+1\u306f\u6841\u6ea2\u308c\u3092\u8d77\u3059\u3002 > db.test.drop() true > db.test.save({i:0x1fffffffffffff}) > db.test.save({i:0x20000000000000}) > db.test.save({i:0x20000000000001}) > db.test.find\u2026","blog_title":"\u4e2d\u5e74engineer\u306e\u72ec\u308a\u8a00 - crumbjp","url":"https://crumbjp.hateblo.jp/entry/20130502/1367483865","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/hiroppon/","author_name":"hiroppon","type":"rich"}