So for this topic I will discuss Array’s. So defined by wikipedia
“In computer science an array is a data structure consisting of a group of elements that are accessed by indexing. In most programming languages each element has the same data type and the array occupies a contiguous area of storage.”
So we all know that when we have an array in Actionscript we don’t have to fill it up with objects of the same data type’s, we can use any data type. We’re not restricted. That’s the same in Objective-C. Except 1 little thing. In objective-C if we want to fill up an array it can only be with Objects, not primitives (like int or float, ..). So what we will do is take a couple of examples using an Array in actionscript and converting it to Objective-c. Along the way we will se what is possible and what is not, or what will be different.
more to read here
Andy Jacobs » AS3 to Cocoa Touch: Array’s