day02

#include <algorithm>
#include <iostream>
#include <ranges>
#include <vector>

struct Package {
    double weight;
    double price;
};
using package_list_t = std::vector<Package>;

day02

#include <vector>
#include <functional>

int main() 
{
    int a{100}, b{200};
    
    std::vector<std::reference_wrapper<int>> vec{std::ref(a), std::ref(b)};

    a = 10;

day02

#include <numeric>
#include <array>

inline constexpr int fn()
{
  constexpr const std::array<int, 5> myArray = {{1, 2, 3, 4, 5}};
  constexpr const int sum = std::accumulate(
      myArray.begin(), myArray.end(), 1, std::multiplies<int>());
  return sum;
}

day02

#include <iostream>
#include <variant>
#include <vector>

/* base class has the commmon elements */
struct document {
    void add_content(std::string &&line);
    const std::vector<std::string> &get_content() const;
protected:
    std::vector<std::string> m_content{};

day02

#include <iostream>
#include <sstream>
#include <vector>
#include <string>
#include <memory>

enum class format_t 
{ 
    markdown,
    html,

day02

#include <iostream>
#include <variant>
#include <optional>

/* ---------------------------------  Events ------------------------------------------ */

struct event_connecting { 
    std::string m_address{};
};

day02

#include <iostream>
#include <memory>


/* ---------------------------------  Events ------------------------------------------ */
enum class event_t
{ 
    connecting, 
    connected, 
    disconnect, 

day02

// Example program
#include <iostream>
#include <string>
#include <map>
#include <vector>

struct database { 
    virtual std::uint32_t get_population(const std::string &name) = 0;
};

day02

#include <iostream>
#include <string>
#include <memory>

void api(std::shared_ptr<std::uint32_t> &data)
{
    *data = 0x10;
}

int main()

day02

#include <string>
#include <memory>
#include <sstream>
#include <iostream>

struct Office {
    std::string     m_street{};
    std::string     m_city{};
    std::int32_t    m_cubical{};