A comprehensive set of unit tests makes it easy to verify the behavior, letting you freely play "what if" games with optimization without worrying that you've broken something.

全面的单元测试集能够轻松地检查行为是否正确，让开发人员能够专心地优化代码，而不必担心是否会破坏代码的正常行为。

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Movies and video games have always been easy targets for politicians looking for a quick applause line, and President Obama isn't immune.

攻击电影、视频游戏常常可以让政客们轻松获得掌声，奥巴马也可能会那么做。

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That one was easy. But here is a more subtle problem (and one I deal with in my games all the time).

上述错误相对容易，但这里有一个很微妙的问题(也是我在游戏中经常要处理的)。

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The My Games section links users to all previously purchased games and displays a list of the most frequently played games, making it easy to find the next big hit.

ENGADGET: LG's Game World landing on its own Smart TVs HD

Since the teenagers' arrest, all the familiar theories have been rehearsed: broken homes, violent films and video games, easy access to firearms, a longing to catch the journalists' attention.

ECONOMIST: It helps if the teacher's been nice

So give iOS a little more respect: far from being the mindless easy games that some accuse them of being, they can provide some of the most challenging experiences on any format.

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