2017-11-07 13:47 GMT+01:00 Denis Kudriashov <dionisiydk@gmail.com>:

2017-11-07 13:11 GMT+01:00 Thierry Goubier <thierry.goubier@gmail.com>:

Now, if you explained me something like that:

people nilFirst ascending

Then I'd be more convinced. Or even

people sorted nilFirst ascending (if one would prefer restricting the implementations of #nilFirst).

I think we can easily support it. But of course it will work only for objects which understand #threeWayCompareTo:. Now it looks like
#(one nil two) sorted: #yourself ascending undefinedFirst.
And I prefer this version instead of extending collection with new sorting messages.

My position is that we have few messages (which are not business logic related) for sorting, so they could easily extend collection (and #yourself here is just noise). Now, you want to keep that mix of business logic + ordering, hence the syntax you're choosing.

Thierry