Jeff,

This has a bit of a whiff about it. Two arrays of the same objects is not unusual, but forcing them always into the same order is - surely that's just a data duplication? If the arrays are meant to be identical, why not just use one array? What is different?

If array B contains array A + some extra objects (which after sorting will always be pushed to the end of the array), maybe a better pattern would be to keep just these additional objects in array B and just tack them on to the end of array A when a complete list is requested. Then your problem reduces to "how do I sort an array?" which Cocoa gives you. A bit more of an overview of what you're actually trying to do would help.

cheers, Graham



On 29 Jul 2008, at 1:08 am, Jeff LaMarche wrote:

Hey all...

I've got two arrays that are related, so that object 0 in one array corresponds to object 0 in the other array. I'd like to implement a sort based on the values in one array, but to reorder both array so that the order of the two arrays stays in sync and that object x in one array continues to correspond to the same thing as object x in the other array after the sort.

I've got a general idea of how to implement the sort, but since I know that there are a few places in the system where array pairs are used like this, I wanted to see if there was any out-of-the-box way of handling this scenario - I'd hate to reinvent the wheel if it's not necessary. Does anyone know if there is any easy way to do this?

TIA,
Jeff

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