Thinking of the <=> operator, this can be useful for things like this:
dataset := #(1 3 4 5 7 8 5 2 3 0). mean := dataset average. dataset collect: [ :each | mean <=> each ] --> #(1 1 -1 -1 -1 -1 -1 1 1 1) This we can also do with coll := #(1 3 4 5 7 8 5 2 3 0). mean := coll average. coll collect: [ :each | (mean - each) sign ] but still. Other use cases for <=> ? Phil On Fri, May 22, 2015 at 11:43 AM, Sven Van Caekenberghe <s...@stfx.eu> wrote: > > > On 21 May 2015, at 16:50, Esteban A. Maringolo <emaring...@gmail.com> > wrote: > > > > 2015-05-21 10:01 GMT-03:00 p...@highoctane.be <p...@highoctane.be>: > >> > >> > >> On Thu, May 21, 2015 at 2:19 PM, Sean P. DeNigris < > s...@clipperadams.com> > >> wrote: > >>> > >>> Squeak 4.6 "Spur" Release Notes > >>> http://wiki.squeak.org/squeak/6192 > >> > >> > >> Tag sort functions looks great to have around. > >> > >> About the spaceship operator (<=>), is this something we'd like to have > >> around? (I like it). http://en.wikipedia.org/wiki/Three-way_comparison > > > > http://www.smalltalkhub.com/#!/~emaringolo/SortFunctions > > > > I use them extensively. > > > > Esteban A. Maringolo > > I had a look. > > Apart from the fact that for some reason, the extensions on MAElement are > in the Core package, hence loading just Core gave errors, things looked OK. > > This is generally useful, small and a very good example of super cool OO > design. > > I would vote to integrate this (<=> and all). > > Sven > > >
