Using a for loop, how can I iterate through a list, with the ability to not iterate over the very last element in the list.

In my case, I would like to not iterate over the first element, and need to iterate through backwards, here is what I have:

```
        for( thing <- things.reverse) {
          //do some computation iterating over every element; 
          //break out of loop when first element is reached
        }

```