{"id":11168,"date":"2015-05-31T21:43:56","date_gmt":"2015-05-31T12:43:56","guid":{"rendered":"http:\/\/programminglanguage7.com\/?p=11168"},"modified":"2015-05-31T21:43:56","modified_gmt":"2015-05-31T12:43:56","slug":"post-11168","status":"publish","type":"post","link":"https:\/\/programminglanguage7.com\/?p=11168","title":{"rendered":"difference()\u3068difference_update()"},"content":{"rendered":"<p><span style=\"font-size: 14pt;\">\u3053\u306e\u7ae0\u3067\u306fa\u306e\u30bb\u30c3\u30c8\u3068b\u306e\u30bb\u30c3\u30c8\u306e2\u3064\u306e\u30bb\u30c3\u30c8\u304c\u3042\u308b\u3068\u3057\u3066\u3001a\u306e\u8981\u7d20\u306e\u4e2d\u3067b\u306b\u306f\u306a\u3044\u8981\u7d20\u3060\u3051\u3092\u53d6\u308a\u51fa\u3057\u3066\u3001\u30bb\u30c3\u30c8\u3092\u4f5c\u6210\u3059\u308b3\u3064\u306e\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/span><br \/>\n<span style=\"font-size: 14pt;\">1\u3064\u76ee\u3092\u307f\u3066\u307f\u307e\u3057\u3087\u3046\u3002<a 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