本文中的源代码在此处。

The source code for this article is available here.

youdao

异步方法可能还支持多个挂起的调用(多个并行调用)，允许您的代码在此方法完成其他挂起的操作之前调用此方法任意多次。

An asynchronous method may also support multiple pending calls (multiple concurrent invocations), allowing your code to call it any number of times before it completes other pending operations.

youdao

如果该表不存在，则它调用数据库初始化代码ResourcesDatabaseInitializer，该代码在此示例中是初始化数据库的实用程序类。

If the table doesn't exist, it invokes the database initialization code, ResourcesDatabaseInitializer, which in this example is a utility class that initializes the database.

youdao

And the second thing that we talked about is this idea that we want you to in fact learn how to relate a choice you make about a piece of code to what the efficiency is going to be.

关于这个方法第二件事,就是我们实际上希望,你在写代码的时候,能做出优化效率的选择,因为此。

麻省理工公开课 - 计算机科学及编程导论课程节选

And for a couple of reasons, one this is the first P set where we're actually gonna give you code to work from.

由于一些原因，这里是第一个习题集,在此我们提供了一些代码供大家参考。

哈佛公开课 - 计算机科学课程节选