lambda

#include <iostream>
#include <map>
#include <string>
#include <vector>
#include <numeric>
#include <algorithm>
#include <execution>
#include <ctime>
#include <functional>

using namespace std;

int main() {

    vector<int> v{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    int sum = accumulate(v.begin(), v.end(), 0);
    cout << sum << endl;
    map<string, int> peoples{{"First"s, 2}, {"Second"s, 8}, {"Ivan"s, 35}};
    int result = accumulate(peoples.begin(), peoples.end(), 0, [](int sum, pair<string, int> people) {
        return sum += people.second;
    });
    cout << result << endl;
    cout << "========================="s << endl;
    vector<int> elements(100'000'000u);
    iota(elements.begin(), elements.end(), 0);
    clock_t begin = clock();
    for_each(execution::par, elements.begin(), elements.end(), [](int& elem) {
        elem *= 10;
    });
    clock_t end = clock();
    cout << "time for_each "s << end - begin << " ms"s << endl;

    const double PI = 3.14;
    int value = 5;


    function<void(int&)> func = [&value](int& elem) {
        value = 10;
        //elem = 16;
    };


    func(value);

    cout << value << endl;
    return 0;
}