Unless you've got a couple of friends who are super-serious about getting down to business, stay away from group study sessions because they tend to get off-topic pretty quickly.
除非你有几个学习态度超级认真的朋友,否则请远离小组学习。因为这些人很快就会偏离主题。
The new function basically does nothing besides building the object reference to contain that, and you can see that the other functions have to unpack the void pointer before getting down to business.
new函数除了构建一个包括它的对象引用以外,基本上没什么作用。而且您可以看到,其它的函数在执行前必须先将那个空指针解开。
This programming model enables you to focus solely on the business logic of your application, without getting bogged down by the details of the persistence mechanism.
该编程模型能让您将重点集中于应用程序的业务逻辑上,而不陷入支持机理的细节中去。
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