向量的向量是连续的吗？ [英] Would vector of vectors be contiguous?

问题描述

我需要分配一个向量的行，其中行包含行的向量。我知道一个向量将是连续的。我想知道一个向量的向量是否也是连续的。示例代码如下所示

I need to allocate a vector of rows where row contains a vector of rows. I know that a vector would be contiguous. I wanted to know whether a vector of vectors would also be contiguous. Example code is given below

vector<long> firstRow;

firstRow.push_back(0);

firstRow.push_back(1);

vector<long> secondRow;

secondRow.push_back(0);

secondRow.push_back(1); 

vector< vector < long> > data;

data.push_back(firstRow);

data.push_back(secondRow);

内存中的序列是否为0 1 0 1？

Would the sequence in memory be 0 1 0 1?

推荐答案

总之，没有。这是实际发生的情况：

In short, no. This is what actually happens:

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