With simplified build configurations, the project system determines whether to build a debug or release version.

通过简化的生成配置, 项目系统确定是生成调试版本还是发布版本.

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Defining this symbol in a Release version creates unnecessary code that slows your program down.

在发布版本中定义该符号将创建不必要的代码,从而降低程序的速度.

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