Question

I’m trying to implement a simple LinkedList
The following code, producing this error:

error: lvalue required as left operand of assignment

The line is:

newNode->getNext() = _head;

Where getNext() returns a Node*, and i’m trying to make the new Node point at the current head before updating it.
I’m probably thinking in Java and doing the transition wrong.

Answer 1

Either, dereference:

Node* Node::getNext();
*(newNode->getNext()) = _head;

(assuming _head has type Node and the assignment operator was implemented with care in Node) or, what is probably better

Node& Node::getNext();
newNode->getNext() = _head;

But anyway, this is not the way you should be doing this. You may want to implement a setter.

Also, have you considered using std::list instead of re-inventing the wheel?