本文介绍了stl引用C ++ 11的容器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我知道这个问题被问了一百万遍。大多数答案只是说该对象应该是CopyAssignable和CopyConstructible。但是明确指出，这是规则（直到C ++ 11 ）！但是，它仍然行不通。为什么？
I know this question was asked a million of times. And most of answers just says that object should be CopyAssignable and CopyConstructible. But documentation clearly says this is the rule (until C++11)! But still it doesn't work. Why?
推荐答案
是的，现在的要求不再那么严格了。但是，在您要引用的部分的正下方，链接的文档明确指出：
Yes, the requirements are less strict now. However, right below the part you're referencing, the linked documentation clearly states that:
引用不符合Erasable的要求，因此它们仍然无法工作。
References don't meet the requirements of Erasable, therefore they still can't work.
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