如何用标准库替换 QByteArray？

Question

I want to replace a QByteArray with stdlib. The QByteArray is used for append various 'struct' and after that, write it on a file.

How can I replace QByteArray ? Vector of char? A buffer Char*?

What do you recommend me? Thank you

Answer 1

I think std::vector<uint8_t> is suitable.

This is an example of appending elements from v2 to the end of v1 :

std::vector<uint8_t> v1 = {1, 2, 3};
std::vector<uint8_t> v2 = {4, 5, 6};

v1.insert(v1.end(), v2.begin(), v2.end());

for (uint8_t val : v1) {
    std::cout << (uint32_t)val << ' ';
}
std::cout << '\n';

Output:

1 2 3 4 5 6