From: Piotr Szotkowski <chastell@...>
Date: 2010-11-08T18:26:41+09:00
Subject: Re: sort_by is not stable ?

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Robert Klemme:

> You can either do

> x.sort_by {|let,dig| [dig, let]}

> or, if you don't want to create all those temporary arrays

> x.sort {|(la,da),(lb,db)| da =3D=3D db ? la <=3D> lb : da <=3D> db}
> x.sort {|(la,da),(lb,db)| c =3D da <=3D> db; c =3D=3D 0 ? la <=3D> lb : c}

Or use #nonzero? and #<=3D> chaining like this:

x.sort { |(la, da), (lb, db)| (da <=3D> db).nonzero? or la <=3D> lb }

=E2=80=94 Piotr Szotkowski
--=20
Language designers in general: You are IN THE WAY. Go here:
http://rebol.com/oneliners.html then do us all a favor and don=E2=80=99t
resist the urge to fall on that wakizashi when your shame overcomes you.
                                                             [Jeff Bone]




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