https://xuezhaojun.github.io/tags/%E7%B1%BB%E5%9E%8B%E7%B3%BB%E7%BB%9F/Recent content in 类型系统 on Zhao XueHugoen-usSat, 18 Apr 2026 00:00:00 +0000https://xuezhaojun.github.io/collections/go-internals/go-interface/Sat, 18 Apr 2026 00:00:00 +0000https://xuezhaojun.github.io/collections/go-internals/go-interface/K8s admission webhook 返回了一个 typed nil pointer，导致 error != nil 却打印不出任何错误信息。搞清楚 nil interface vs typed nil、值接收者 vs 指针接收者、类型断言这些面试必考点。