I think the fns you're interested in are sort and sort-by, not sorted-
set-by.

I know you might not like it, but there is a convention in JavaLand
that a comparator value of 0 is identical in a sorted collection.
This causes orthogonal concepts of order & identity to be entwined.

Sean

On Apr 16, 11:45 am, Razvan <[email protected]> wrote:
> Why should sorting be related to the primary key? You should be able
> to sort on any attribute. If you wanted to sort a set of people by age
> would it make sense to only retain one person of each age? Sort order
> and identity should be orthogonal. Besides, if you need a collection
> based on primary keys then a map or a sorted map is more appropriate,
> and if you chose a set instead you probably expect operations on that
> set to take into account the entire element.
>
> Raz
>
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