A demonstration of the advantages of using member initializer lists

member_initializer_list.cpp

#include <iostream>
#include <string>

using string = std::string;

struct Example {
 public:
  // Default constructor
  Example() { std::cout << "Created Entity!\n"; };

  Example(int x) { std::cout << "Created Entity with " << x << "!\n"; }
};

struct Entity {
 private:
  string m_Name;
  Example m_Example;

 public:
  // Member initializer list
  Entity() : m_Name("Unknown"), m_Example(8){};

  // Entity() {
  //     m_Name = "Unknown";
  //     m_Example = Example(8);
  // }
};

int main() {
  Entity e;
  return 0;
}