Use of undeclared identifier alloc?

Question

When I try to create an instance of a custom class, using this code...

PlayerTurn *playerTurn = [[alloc] init];

...inside the definition of a method in my View Controller .m file, I get this error:

"use of undeclared identifier alloc"

Can someone please explain!? I thought alloc-init was easy.

Answer 1

alloc is a class method (on effectively all classes). You need to call it on the class you want to create an instance of. So you want :

PlayerTurn *playerTurn = [[PlayerTurn alloc] init];
//                         ^^^^^^^^^^

Answer 2

I think you meant:

PlayerTurn *playerTurn = [[PlayerTurn alloc] init];

The Working with Objects doc from Apple might be helpful.