原文链接:[链接] 前言 C VS Swift C不安全 (这里主要指指针的使用) C中有未定义的行为 (只声明,不初始化) C中的预处理器解释功能缺陷 OC中的API检查主要是通过C预处理根据当前classs发送respondsToSelector:和 instancesRespondToSelector:来达成的: {代码...} Swift根据特定系统以及指令集架构对编译器做了完全...
In a strict sense, an operating system can be defined as the software that controls the hardware resources of the computer and provides an environment under which programs can run.