在C++中使用Boost生成UUID的示例

Question

我想生成随机的UUID,因为对于我的程序中的实例而言,它具有唯一标识符非常重要.我查看了Boost UUID,但我无法生成UUID,因为我不明白要使用哪个类和方法.

如果有人能给我任何如何实现这一目标的例子,我将不胜感激.

Answer 1

一个基本的例子:

#include <boost/uuid/uuid.hpp>            // uuid class
#include <boost/uuid/uuid_generators.hpp> // generators
#include <boost/uuid/uuid_io.hpp>         // streaming operators etc.

int main() {
    boost::uuids::uuid uuid = boost::uuids::random_generator()();
    std::cout << uuid << std::endl;
}

示例输出:

7feb24af-fc38-44de-bc38-04defc3804de

Answer 2

Georg Fritzsche的答案还可以,但可能有点误导.如果您需要多个uuid,则应重复使用该生成器.也许这样更清楚:

#include <iostream>

#include <boost/uuid/uuid.hpp>            // uuid class
#include <boost/uuid/uuid_generators.hpp> // generators
#include <boost/uuid/uuid_io.hpp>         // streaming operators etc.


int main()
{
    boost::uuids::random_generator generator;

    boost::uuids::uuid uuid1 = generator();
    std::cout << uuid1 << std::endl;

    boost::uuids::uuid uuid2 = generator();
    std::cout << uuid2 << std::endl;

    return 0;
}