In other words, a struct value can be assigned to a struct variable only if every field of the struct may be legally assigned individually by the program.
换句话说，如果想把一个结构体赋值给另一个结构体，就必须让该结构体的每一个成员变量都能被程序合法的赋值。
Struct members are initialized to their default value if you do not explicitly initialize them.
在未进行显式初始化的情况下，结构成员将初始化为其默认值。
If your struct is immutable then all automatic copies resulting from being passed by value will be the same.
如果你的结构是不变的，然后从价值传递产生的所有自动副本将是相同的。
If your struct is immutable then all automatic copies resulting from being passed by value will be the same.
如果你的结构是不变的，然后从价值传递产生的所有自动副本将是相同的。
应用推荐