What does this line of code do?

[JRimmer]

I'm trying to figure out what the below line of code is doing?

 AvlNode *oldNode = t;
 t = (t->left != nullptr) ? t->left : t->right; //Specifically this line
 delete oldNode;

[Sh0es]

It seems to be switching the branch nodes of the node 't', but that's just a guess as I'm unfamiliar with the syntax (I guess that's what you're asking about).

[Chervil]

It's a concise way of writing an 'if' statement, it has a similar effect to

if (t->left != nullptr) 
    t = t->left;
else
    t = t->right;

see Conditional ternary operator on this tutorial page:
http://www.cplusplus.com/doc/tutorial/operators/

[JRimmer]

Thanks for the help!