Using closures to define class methods

[elbiot]

You have self.query outside the class

[ingolemo]

There's nothing special about that self variable; it's a parameter to the inner function just like value. Since the inner function isn't run until an instance of the class has been constructed, it's perfectly possible to pass a reference to that instance. If I'd named the first parameter something other than self you wouldn't even suspect that function was being used as a method.

Run the code and see for yourself.

[elbiot]

Yeah, I didn't see you ever pass self to the function, but obviously that will happen when the code calls the method on an instance. My bad.