Has

Check if a service is registered in the handler.

template <typename T>
bool Has() const;

This method takes a template parameter T which is the service to check for.

Parameters

• T: The service to check for.

Return value

• true if the service is registered, false otherwise.

Examples

class MyServiceA {
 public:
  void DoSomething() { std::cout << "Doing something" << std::endl; }
};

class MyServiceB {
 public:
  void DoSomething() { std::cout << "Doing something" << std::endl; }
};

int main() {
  auto handler = DependenciesHandler::Create();

  handler->Add<MyServiceA>();

  if (handler->Has<MyServiceA>()) {
    std::cout << "Service A is registered" << std::endl;  // Will print "Service A is registered"
  }
  if (handler->Has<MyServiceB>()) {
    std::cout << "Service B is registered" << std::endl;  // Will not be called
  }

  return 0;
}