cppLambdaExpr

#include <iostream>
#include <memory>
#include <array>
#include <vector>
#include <forward_list>
#include <algorithm>
#include <functional>

namespace itstep
{
    template <typename InIter, typename Func>
    void for_each(InIter begin, InIter end, Func func)
    {
        for (; begin != end; ++begin)
        {
            func(*begin);
        }
    }

    template <typename T>
    void print(const T& elem, char delimeter = '\0')
    {
        std::cout << elem;
        if (delimeter)
        {
            std::cout << delimeter;
        }
    }

    template <typename T>
    void mul2(T& elem)
    {
        elem *= 2;
    }

}

//void tester(void(*func)(int, int))
//template<typename FuncType>
//void tester(FuncType func)
void tester(std::function<void(int, int)> func)
{
    func(rand() % 10, rand() % 10);
}

void print3Num(int a, int b, int c)
{
    std::cout << "a = " << a << " b = " << b << " c = " << c << '\n';
}

void wrapper(int a, int c) { print3Num(a, 55, c); }

int main()
{
    std::vector<int> dynArr{ 1,2,3,4,5,6,7,8,9,10 };

    //itstep::print(10, '\t');
    //itstep::print(20, ' ');
    //itstep::print(30);

    std::for_each(dynArr.begin(), dynArr.end(), [](auto el) {itstep::print<int>(el, '\t'); });

    std::for_each(dynArr.begin(), dynArr.end(), [](auto el) {itstep::print<int>(el, ' '); });
    //const int fixedVal{ 55 };

    ////tester(wrapper);
    //tester([fixedVal](int first, int second)->void { print3Num(first, fixedVal, second); });
    //tester([fixedVal](int first, int second)->void { print3Num(fixedVal, first, second); });
    //return 0;
    //using intFunct = int(*)(int, int);

    //auto maxL{ [](int a, int b) {return a > b ? a : b; } };

    //int x{ 42 };
    //int y{ 33 };
    //int z{ 77 };

    //auto numberPrinter{ [x,&y]()mutable -> void { std::cout << x++ << ' ' << y++ << '\n'; return ; } };
    //
    //// [&x,y,&z](){}
    //auto empty{ [z](int num, char sym, bool flag){ } };
    //

    //numberPrinter();

    //x = 442;
    //y = 333;

    //numberPrinter();

    //std::cout << "x = " << x << '\n';

    ////int(*fPtr)(int, int);
    //intFunct fPtr;

    //std::function<int(int, int)> funcPtr{ maxL };
    //fPtr = maxL;

    //auto copyMax{ maxL };

    //std::cout << funcPtr(10, 20) << '\n';

    //std::array<int, 10> staticArr;
    ////std::vector<int> dynArr{1,2,3,4,5,6,7,8,9,10};

    //std::forward_list<int> dynArr{ 1,2,3,4,5,6,7,8,9,10 };

    //auto begin{ dynArr.begin() };
    //auto end{ dynArr.end() };

    //auto printer{ [](auto& elem) { std::cout << elem << ' '; } };

    //itstep::for_each(dynArr.begin(), dynArr.end(), printer);
    //std::cout << '\n';
    //std::for_each(dynArr.begin(), dynArr.end(), [](auto& elem) { elem *= 2; });
    //std::cout << '\n';
    //std::for_each(dynArr.begin(), dynArr.end(), printer);

    // [] () {}
    return 0;
}