#include <string>
#include <memory>
#include <vector>
#include <algorithm>
#include <iostream>
 
class Worker {
private:
    std::string name;
public:
    Worker(std::string n) { name = n; }
    std::string getName() { return name; }
};
 
int main()
{
    using workers_t = std::unique_ptr<Worker>;
    std::vector<workers_t> Workers;
    Workers.emplace_back(std::make_unique<Worker>(Worker("Paul")));
    Workers.emplace_back(std::make_unique<Worker>(Worker("Anna")));
    Workers.emplace_back(std::make_unique<Worker>(Worker("John")));
 
    std::sort(std::begin(Workers), std::end(Workers), [](const workers_t& a, const workers_t& b) {
        return a->getName() < b->getName();
    });
 
    for (auto const &worker : Workers)
        std::cout << worker->getName() << std::endl;
 
    return 0;
}

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