[译]空引用真的有那么糟糕吗？-HollisChuang's Blog



[译]空引用真的有那么糟糕吗？-HollisChuang's Blog

问题在于，理论上任何一个对象都有可能是null，并且当你试图使用他的时候就会抛出异常。你的面向对象代码基本上就是一个定时炸弹。

你是对的，使用if语句进行非空检查是一种优雅的处理方式。但是如果一个你确信不可能为null的对象的值为null了会怎么样？敢肯定的有两件事。1、这绝对不是一件好事儿。2、你肯定不希望他发生。

还有，千万不要忽视"容易debug"这个好处，成熟的代码都是庞然大物。一个好的错误提示会节省你几个小时的时间。


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