From: niklas | brueckenschlaeger <niklas@...>
Date: 2010-12-02T07:36:17+09:00
Subject: Re: hash method how-to?

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On Thu, 2010-12-02 at 04:27 +0900, Yossef Mendelssohn wrote:
> On Dec 1, 1:10 pm, niklas | brueckenschlaeger
> <nik...@brueckenschlaeger.de> wrote:
> > http://en.wikipedia.org/wiki/Hash_function
> >
> > in most cases it's the easiest to delegate the hash method to something
> > else. Example:
> >
> > class X
> >   def initialize(name)
> >     @name =3D name
> >   end
> >
> >   def hash
> >     @name.hash
> >   end
> > end
> >
> > h =3D { X.new("foo") =3D> "bar" }
> > h[X.new("foo")] =3D "baz" # will overwrite the above
>=20
> And so will `h['foo'] =3D 'baz'`.

sure, that is a nasty side effect, so probably not the nicest example :)

>=20
> --
> -yossef
>=20


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