Copying Vectors?

[Delshire]

I am trying to copy exactly as it is, a vector<std::string> to a vector<byte> without changing/casting any element. What do i mean? For example this is what it is contained in my vector<std::string>:



How could i possibly copy the exact same elements on a vector<byte> ?

Thanks.

[2kaud]

Your image is way to small to be able to be read.

A string contains a variable number of characters and a vector contains a variable number of elements. So for each string element of the vector do you want one vector<byte> or do you want one vector<byte> that contains all the chars from the vector<string>? If the latter, how do you want each different element separated?

What are you trying to accomplish by doing this? For a string, you can iterate over the chars in the string to extract each char in turn.

[Delshire]

I'm sorry for that img, i post the link to it:
Here

What i want to do is copy the exact same elements of the vector<std::string> into the vector<byte>. For example, Element 1 of vector<std::string> is AC so i want on my vector<byte> Element 1: AC.

I hope i explained myself properly,

Thanks!

[2kaud]

Do you want all the string elements from the vector<string> to be copied to the same vector<byte> one after the other?

[2kaud]

Is this something like you are after? I'm still not sure what you actually want - or why?

#include <iostream>
#include <string>
#include <vector>
#include <iterator>
#include <algorithm>
using namespace std;

using byte = unsigned char;

int main()
{
	const vector<string> vs { "qw", "as", "iu", "oi" };

	for (const auto& s : vs) {
		vector<byte> vb;
		for (const auto& b : s)
			vb.push_back(b);

		copy(vb.begin(), vb.end(), ostream_iterator<byte>(cout, ""));
		cout << endl;
	}
}