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From: Lew <lewbloch@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: equals(), Sets, Maps, and degrees of equality
Date: Fri, 11 Nov 2011 14:22:22 -0800 (PST)
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On Friday, November 11, 2011 10:28:35 AM UTC-8, Sean Mitchell wrote:
> On Nov 11, 10:27=A0am, Lew <lewb...@gmail.com> wrote:
>=20
> > >> consider a class Dog:
> > >> public class Dog {
> > >> =A0 String breed;
> > >> =A0 String name;
> > >> =A0 String age;
> > >> }
> > >> I may want to have a Set<Dog>, which holds only one Dog of each bree=
d,
> >
> > This is terrible modeling.
>=20
> Really. Why?

Because you want to use 'Dog' to model 'Breed', and they aren't the same th=
ing at all.

--=20
Lew