C++11 syntax & stuff

main.cpp

#include <iostream>

// template (generics)
template<typename F>
auto &f(F &param) {
    return param;
}

// TODO reflection
// TODO type casting/switching

namespace Test {
    struct Foo {
        int x;
        std::string y;
    };
}

// const = immutable
// & = reference (w/o & = copy)
int sum(const std::initializer_list<int> &list) {
    // iterator
    auto total = 0;
    for (auto &e : list) {
        total += e;
    }

    // lambda
    auto functionFoo = [](int x, int y) { return x + y; };
    std::cout << functionFoo(10, 20) << std::endl;

    // closure
    int x = 10;
    auto generator = [x](int y) { return x * y; };
    std::cout << generator(2) << std::endl;

    std::cout << f("foo") << std::endl;

    return total;
}

// this gets "inlined" in compile time!
constexpr int basicallyVal(int x, Test::Foo &foo) {
    foo.y = "modified!";
    if (x % 2 == 0) {
        return x * 2;
    }
    return x;
}

int main() {
    std::cout << "Hello, World!" << std::endl;

    auto v = Test::Foo{
            1,
            "foo"
    };

    std::chrono::milliseconds(10);

    auto foo = 123;
    std::printf(
            "hello %d - %d - %s\n",
            sum({1, 2, 3, 4, 5, 6}),
            basicallyVal(10, v),
            v.y.c_str()
    );

    return 0;
}