如何将数组的内容插入向量? [英] How can I insert the content of arrays into a vector?
本文介绍了如何将数组的内容插入向量?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
我需要用std::vector
编写一些简单的代码,但是我有点挣扎.
I need to write some simple code with std::vector
s and I am struggling a bit.
我有一个char[]
缓冲区,里面装有来自另一个程序的回调数据.我需要将此数据附加到向量的末尾-整个缓冲区.
I have a char[]
buffer that is filled with callback data from another program. I need to append this data to the end of a vector - the whole buffer.
std::vector<char> vector;
// data comes from another program
void callback(char buffer[], size_t size)
{
// copy buffer to the end of vector here
}
最后,向量应该包含来自缓冲区的连续数据.
At the end the vector is supposed to contain continuous data from the buffer.
有没有一种有效的方法,而无需通过循环逐个元素地插入?
Is there an effective way to do this without inserting element by element with a loop?
for (size_t i = 0; i < size; ++i)
vector.push_back(buffer[i]);
推荐答案
假设您知道大小,则可以插入一个范围:
Assuming you know the size, you can insert a range:
vector.insert(vector.end(), buffer, buffer + size);
对于这种事情,还有一种更通用的算法:
There's also a more generic algorithm for this sort of thing:
#include <iterator>
#include <algorithm>
std::copy(buffer, buffer + size, std::back_inserter(vector));
这篇关于如何将数组的内容插入向量?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文