> * It's a little bit like asking what's the use of a linked list.* Well, no, it's more like asking why you'd use data structure X instead of Y. I was asking

> * It's a little bit like asking what's the use of a linked list.* Well, no, it's more like asking why you'd use data structure X instead of Y. I was asking why you'd want that property as part of your data structure, and pointing out that (AFAIR) I've never needed it. For your use case, I guess you wanted to be able to retrieve the data for specific time stamps? Otherwise I'd think you'd just put it into an array.