{"published":"2004-12-10 09:00:02","blog_title":"\u5323\u306e\u5411\u3053\u3046\u5074 - \u3042\u307e\u308a\u306b.NET\u306a","description":"\u6b21\u306e\u3088\u3046\u306a\u95a2\u6570\u3092\u7528\u610f\u3057\u3001\u5f15\u6570\u304c\u6570\u5024\u306a\u3089\u8db3\u3057\u7b97\u3001\u6587\u5b57\u5217\u306a\u3089\u9023\u7d50\u3001\u3068\u3044\u3046\u3088\u3046\u306b\u5f15\u6570\u306boperator+\u3092\u9069\u7528\u3055\u305b\u305f\u3044\u3068\u3057\u307e\u3059\u3002 def plus(x, y): return x + y \u3068\u3053\u308d\u304c\u3001\u3053\u308c\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002 BCE0051: Operator '+' can't be used with a left hand side of type 'System.Object' and a right hand side of type 'System.Object'. \u5f15\u6570x, y\u306f\u578b\u3092\u6307\u5b9a\u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067Object\u578b\u306b\u306a\u308a\u307e\u3059\u3002Object\u578b\u306fop\u2026","version":"1.0","author_name":"akiramei","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fakiramei.hatenadiary.org%2Fentry%2F20041210%2F2\" title=\"duck typing - \u5323\u306e\u5411\u3053\u3046\u5074 - \u3042\u307e\u308a\u306b.NET\u306a\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://akiramei.hatenadiary.org/entry/20041210/2","title":"duck typing","width":"100%","categories":["Boo"],"height":"190","author_url":"https://blog.hatena.ne.jp/akiramei/","blog_url":"https://akiramei.hatenadiary.org/","type":"rich","provider_url":"https://hatena.blog","provider_name":"Hatena Blog"}