重构 on Jeanphilo Bloghttps://shio-chan-dev.github.io/jeanblog/zh/tags/%E9%87%8D%E6%9E%84/Recent content in 重构 on Jeanphilo BlogHugo -- 0.159.2zh-cnSat, 24 Jan 2026 15:42:47 +0800用多态替换 if：把流程判断变成对象职责https://shio-chan-dev.github.io/jeanblog/zh/dev/design/replace-if-with-polymorphism/Sat, 24 Jan 2026 15:42:47 +0800https://shio-chan-dev.github.io/jeanblog/zh/dev/design/replace-if-with-polymorphism/通过对象职责拆分，消除重复 if 判断。用多态替换 switch：让代码更符合开闭原则https://shio-chan-dev.github.io/jeanblog/zh/dev/design-patterns/replace-switch-with-polymorphism/Sat, 24 Jan 2026 15:42:47 +0800https://shio-chan-dev.github.io/jeanblog/zh/dev/design-patterns/replace-switch-with-polymorphism/通过策略模式消除 switch 语句，降低分支扩展成本。如何处理遗留代码：安全改动与渐进式重构https://shio-chan-dev.github.io/jeanblog/zh/dev/engineering/legacy-code-management/Sat, 24 Jan 2026 12:47:45 +0800https://shio-chan-dev.github.io/jeanblog/zh/dev/engineering/legacy-code-management/给出处理遗留代码的工程策略，包括测试保护网与渐进式改造。重构何时有用：时机、信号与风险控制https://shio-chan-dev.github.io/jeanblog/zh/dev/engineering/refactoring-when/Sat, 24 Jan 2026 12:42:52 +0800https://shio-chan-dev.github.io/jeanblog/zh/dev/engineering/refactoring-when/解释重构适用场景、触发信号与风险控制方法。