{"author_url":"https://blog.hatena.ne.jp/wata_d/","provider_url":"https://hatena.blog","type":"rich","version":"1.0","url":"https://www.little-cuckoo.jp/entry/20091109/1257768233","author_name":"wata_d","height":"190","blog_url":"https://www.little-cuckoo.jp/","title":"foreach\u3067\u53d7\u3051\u53d6\u308b\u578b\u306b\u5236\u9650\u304c\u306a\u3044?","description":"class Program { interface IAnimal { } class Dog : IAnimal { public void say() { Console.WriteLine(\"\u30ef\u30f3\"); } } class Cat : IAnimal { } static void Main(string[] args) { IAnimal[] dogs = new IAnimal[1] { new Cat() }; foreach (Dog d in dogs) { d.say(); } } } C#\u3067\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u304c\u666e\u901a\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3067\u304d\u307e\u3059\u3002\u304c\u3001dogs\u306e\u4e2d\u8eab\u306fCat\u578b\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306a\u2026","provider_name":"Hatena Blog","image_url":null,"categories":["C#"],"width":"100%","published":"2009-11-09 21:03:53","blog_title":"\u9591\u53e4\u9ce5","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.little-cuckoo.jp%2Fentry%2F20091109%2F1257768233\" title=\"foreach\u3067\u53d7\u3051\u53d6\u308b\u578b\u306b\u5236\u9650\u304c\u306a\u3044? - \u9591\u53e4\u9ce5\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}