In this example, I'll show you how to sort by title, leaving sorting by artist as a learning exercise.
在本例中，我将向您展示如何根据标题进行排序，并将根据艺术家进行排序留作练习。
As a learning exercise, try writing the code for the fourth use case yourself, but this time, sort by artist rather than by title.
作为一个练习，请自己试图为第四个使用案例编写代码，对艺术家而不是标题进行排序。
"The only point of learning to do this kind of thing is really as a mental exercise, as a way of showing how smart you are," he said.
“学习做这种事的唯一目的实际上只是作为一种思维锻炼，是一种方式来表示你是多么聪明，”他说。
Over the years, I have observed that RUP novices mistakenly assume that they need to complete many of these work products "just in case I need them," — or worse, as a "learning exercise."
多年来，我发现RUP初学者错误的认为他们“仅仅在需要的时候”才要完成这些工作产品——甚至更糟的是，将其作为“学习过程中的练习。”
Over the years, I have observed that RUP novices mistakenly assume that they need to complete many of these work products "just in case I need them," — or worse, as a "learning exercise."
多年来，我发现RUP初学者错误的认为他们“仅仅在需要的时候”才要完成这些工作产品——甚至更糟的是，将其作为“学习过程中的练习。”
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