"Hello World!\n"; } }; void f() { C c; throw c; // copying the named object c into the exception object. } // 由于异常对象保存在线程信息块TIB中,这里的复制构造不可省略. 这使得调用栈上压栈保存的函数都有机会处理这个异常对象
Kevo implemented a pure concatenation-based object model in which new objects were created by copying and the namespaces of all the objects were always
need to mimic object composition by stepwise copying fields from one object to another. It natively supports Trait and Mixin based object composition via