Question

I have a NSMutableArray, I want to insert data inside it, the problem is first I want to check if the index where I’m inserting the data exists or not. How to do that?
I try something like that but nothing is working:

if ([[eventArray objectAtIndex:j] count] == 0)

or

if (![eventArray objectAtIndex:j])

Answer 1

if (j < [eventArray count])
{
     //Insert
}