To make this work in real life, we need to be able to replace the "real" DAO class with the new "simulated" DAO class in our program.
要使这种技术在实际工作中有效，需要能够将程序中的“实际”dao类替换成新的“模拟”dao类。
Typically, we put the class definition into a file. Any program that wants to use our class must include that file.
一般来说，我们将类定义放入一个文件中，要使用该类的任何程序都必须包含这个文件。
All class parents and teachers should have already started planning the programs for our New Year party. Please submit the name of your program to the Vice Principal, Woody Huang, this Saturday.
请各班老师及家长代表表开始筹划新年晚会的节目﹐ 并将节目名称于十二月二十日前向副校长黄允武报备。
All class parents and teachers should have already started planning the programs for our New Year party. Please submit the name of your program to the Vice Principal, Woody Huang, this Saturday.
请各班老师及家长代表表开始筹划新年晚会的节目﹐ 并将节目名称于十二月二十日前向副校长黄允武报备。
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