Episode 4 : if self.editing != editing ??

HI,

In the setEditing:animated: method you check to see if the current state != previous state.

Is this really necessary ?

Will the method not be called only when there is a change ?

Or is there a case when it can be called more than once with the same state for editing param?

Thanks

Hi Shahed,

Is this the code you are referring to from the IngredientsViewController;

- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
    if(self.editing != editing) {

If so, yes this method can be called multiple times with the same value for the editing flag. We only want to change the state when the editing state actually changes.

Thanks Bill,

Yes that is the code.

I initially thought that it would only get fired if you click on the “Done/Edit” button which
keeps track of its toggle state internally.

Thanks
Shahed.