Allowing maximum number of rows in array

[freshking]

Hi,

in my NSMutableArray there are constantly objects added to it while the app is running.
What I want to do is, to have a maximum number of rows in that array (lets say 50). So once the array count reaces 50 I want the last row (first row added row) to be deleted. Something like in the messages app where there is only a certain numbers of rows visible.
How would I do this?
Thanks alot!

[rwenderlich]

In the section where you're adding items onto the NSMutableArray, just check the count of the array before putting a new item onto it, and remove the oldest item first if it's at maximum length.

[FlyingDiver]

Or, if you're adding items to the array in a lot of places, and don't want to be putting those checks everywhere, you could subclass NSMutableArray and do the check in your own insert method.

joe

[Dutch]

Yeah if you're using an NSMutableArray, you can just do...

if ([theArray count] >=50){
    [theArray removeObjectAtIndex:49];
}
[theArray insertObject:yourObjectToInsert atIndex:0];

[freshking]

Thats all I wanted to know! Thanks!

@Dutch: Thanks alot. Exactly what I needed!

[Dutch]

Glad to help.