vector >与c ++中的vector *>相对应(vector> vs. vector*> in c++)

 显然它会根据你使用的编译器而有所不同，但我很好奇在执行vector<vector<largeObject>>与vector<vector<largeObject>*>时的性能问题，特别是在c ++中。 具体来说： 
 
 假设您已将外部矢量填满，并且您希望开始将元素插入第一个内部矢量。 如果外部向量只是存储指针，那将如何存储在内存中，就像存储整个内部向量一样。 是否必须移动整个外部向量以获得更多空间，或者移动内部向量（假设空间未预先分配），从而导致外部向量出现问题？ 
 
 谢谢 

Obviously it will vary depending on the compiler you use, but I'm curious as to the performance issues when doing vector<vector<largeObject>> vs. vector<vector<largeObject>*>, especially in c++. In specific:
 
let's say that you have the outer vector full, and you want to start inserting elements into first inner vector. How will that be stored in memory if the outer vector is just storing pointers, as apposed to storing the whole inner vector. Will the whole outer vector have to be moved to gain more space, or will the inner vector be moved (assuming that space wasn't pre-allocated), causing problems with the outer vector?
 
Thank you

原文：https://stackoverflow.com/questions/4719796