Question

I’m writing an iOS program in objective c and I need an array with the following characteristics:

1) It’s shape needs to be decided at runtime.

2) It needs to be able to be stored as a property or a global inside an objective-c class

3) When I insert an object at a specific index it needs to stay at that index. For instance, if I insert at index 5, the object needs to overwrite whatever is at index 5 and do no shifting of this element or any other elements (Similar to how a java array works)

I’ve looked at NSMutableArray but that doesn’t seem to fit what I’m describing above because it shifts elements as you insert. I’ve also tried NSString *myArray = malloc(10 * sizeof(NSString *)); but this gives me an error regarding requiring a bridged cast. And I don’t know what that is.

I’m using ARC, in case that matters.

Answer 1

1) nameOfMyArray = [[NSMutableArray alloc] initWithObjects:@"obj1", @"obj2", "obj3",nil];

3) Instead of doing an insert operation, why not just do a replace operation?

[nameOfMyArray replaceObjectAtIndex:0 withObject: @"newObject here"];