[Question] remove/add item into array

[mastermyx]

Hello,
this question might be stupid but i am a beginner.

I have no problem to retrieve data from the plist
but in my dynamicModel, i have an array, how can I do to modify this array (adding and deleting items) programmatically?

Thank you,
Arthur

[loganwright]

Hi @mastermyx:

You can do it two ways. If you declare it as a mutable array, you can add the objects like this:

[dynamicModel.mutableArray addObject:@"AnotherObject"];

Otherwise, you'll have to do like this:

NSMutableArray *arr = [dynamicModel.array mutableCopy];
[arr addObject:@"anotherObject"];
dynamicModel.array = arr;

Does that answer your question?

[mastermyx]

Yes it does!

I thought i couldn't declare an NSMutableArray in the PlistModel class because nsmutablearray is not allowed in Plist.

Thanks!

[loganwright]

Hi @mastermyx:

You are correct that a mutable array isn't allowed in a Plist, but this class does some stuff in the background, so you're dealing with it as a mutable array in memory, but it's persisted as an array.

Let me know if other problems come up :)