{"width":"100%","height":"190","published":"2008-09-05 20:54:59","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhigepon.hatenablog.com%2Fentry%2F20080905%2F1220615699\" title=\" 8. How Do I Add a Feature? - WORKING EFFECTIVELY WITH LEGACY CODE (WEwLC) - higepon blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://higepon.hatenablog.com/","blog_title":"higepon blog","categories":["study","WEwLC"],"author_url":"https://blog.hatena.ne.jp/higepon/","url":"https://higepon.hatenablog.com/entry/20080905/1220615699","author_name":"higepon","provider_name":"Hatena Blog","title":" 8. How Do I Add a Feature? - WORKING EFFECTIVELY WITH LEGACY CODE (WEwLC)","type":"rich","version":"1.0","provider_url":"https://hatena.blog","image_url":null,"description":"Working Effectively With Legacy Code \u306e 8\u7ae0 How Do I Add a Feature?\u3002 \u30de\u30a4\u30f3\u30c9\u30de\u30c3\u30d7\u304b\u3089\u518d\u69cb\u6210\u3057\u305f\u307e\u3068\u3081 \u3069\u3046\u3084\u3063\u3066\u6a5f\u80fd\u3092\u8ffd\u52a0\u3057\u3088\u3046 2\u3064\u306e\u65b9\u6cd5 TDD TDD \u306e\u826f\u3044\u3068\u3053\u308d\u300cWriting\u300d\u300cRefactoring\u300d\u306e\u30d5\u30a7\u30fc\u30ba\u3092\u5206\u3051\u3066\u3044\u308b\u306e\u3069\u3061\u3089\u304b\u306b\u5c02\u5ff5\u3067\u304d\u308b TDD \u306e\u624b\u9806 1.\u5931\u6557\u3059\u308b\u30c6\u30b9\u30c8\u3092\u66f8\u304f 2.\u30b3\u30f3\u30d1\u30a4\u30eb\u3092\u901a\u3059 3.\u30c6\u30b9\u30c8\u3092\u901a\u3059 4.\u91cd\u8907\u306e\u305e\u304f 5.\u7e70\u308a\u8fd4\u3059 Programming by difference \u7d99\u627f\u3092\u5229\u7528\u3057\u305f\u5dee\u5206\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 \u7d99\u627f\u3092\u5229\u7528\u3057\u3066\u30c6\u30b9\u30c8\u3092\u4f55\u3068\u304b\u66f8\u304f\u3002 \u7d99\u627f\u3092\u5229\u7528\u3057\u3066\u5dee\u5206\u30d7\u30ed\u30b0\u30e9\u30e0\u3059\u308b\u3068\u6c5a\u304f\u2026"}