{"blog_url":"https://blog1.mammb.com/","categories":["Design"],"provider_url":"https://hatena.blog","url":"https://blog1.mammb.com/entry/20090923/1253689152","author_url":"https://blog.hatena.ne.jp/Naotsugu/","version":"1.0","published":"2009-09-23 15:59:12","author_name":"Naotsugu","title":"The Liskov Substitution Principle (LSP)\u3000\u30ea\u30b9\u30b3\u30d5\u306e\u7f6e\u63db\u539f\u5247","height":"190","width":"100%","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog1.mammb.com%2Fentry%2F20090923%2F1253689152\" title=\"The Liskov Substitution Principle (LSP)\u3000\u30ea\u30b9\u30b3\u30d5\u306e\u7f6e\u63db\u539f\u5247 - A Memorandum\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","description":"\u30ea\u30b9\u30b3\u30d5\u306e\u7f6e\u63db\u539f\u5247\u3068\u306f \u57fa\u672c\u30af\u30e9\u30b9\u3078\u306e\u30dd\u30a4\u30f3\u30bf\u3084\u53c2\u7167\u3092\u4f7f\u7528\u3059\u308b\u95a2\u6570\u3084\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001\u6d3e\u751f\u30af\u30e9\u30b9\u306e\u7a2e\u985e\u3084\u632f\u308b\u821e\u3044\u304c\u4f55\u3067\u3042\u308d\u3046\u3068\u3001\u6d3e\u751f\u30af\u30e9\u30b9\u306b\u3064\u3044\u3066\u5168\u304f\u4f55\u3082\u77e5\u3089\u306a\u304f\u3066\u3082\u305d\u308c\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044 Functions that use pointers or references to base classes must be able to use objects of derived classes without knowing it. Subclasses should be substitutable for their base classes.[by Martin] \u5185\u2026","blog_title":"A Memorandum","provider_name":"Hatena Blog"}