C++编程法则365条一天一条（359）Copy initialization

参考：https://en.cppreference.com/w/cpp/language/copy_initialization

用一个对象初始化另一个对象，叫做拷贝初始化，不一定是拷贝构造，也可能是构造。

T object = other;	(1)	
T object = {
    
    other};	(2)	(until C++11)
f(other)	        (3)	
return other;	    (4)	
throw object;
catch (T object)    (5)	
T array[N] = {
    
    other-sequence};	(6)