[C++] Smart pointers

 

1. unique_ptr

int main() {
	auto intPtr{ make_unique<int>(42) };
	cout << *intPtr << endl;
}

 

get() method give access to the internal pointer;

int main() {
	auto intPtr{ make_unique<int>(42) };
	cout << *intPtr << endl;

	cout << *intPtr.get() << endl;

}

 

unique_ptr also has reset(), release() methods.

 

2. shared_ptr

unique_ptr does not allow copying; If the pointer needs to be copied from else, use shared_ptr.

int main() {
	auto intPtr{ make_shared<int>(42) };

	auto copiedPtr{ intPtr };

	cout << *copiedPtr << endl;

	cout << *copiedPtr.get() << endl;

}