From: Aaron Patterson <aaron@...>
Date: 2010-04-12T10:10:05+09:00
Subject: Re: attr_accessor, but for a boolean

--qDbXVdCdHGoSgWSk
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Mon, Apr 12, 2010 at 10:00:06AM +0900, Albert Schlef wrote:
> Let's say I have this code:
>=20
> class Mambo
>   attr_accesstor :safe
> end
>=20
> Now,
>=20
> 'safe', in my case, is a boolean. Problem is, the getter will be named
> 'safe', whereas I want it to be 'safe?'.
>=20
> In other words, how do I make the getter 'safe?' and the setter 'safe'
> ?

In situations like this, I make two "getters" and leave the assignment
alone.  Other ruby programmers expect your "setters" to be in the form
of "obj.safe =3D true", not "obj.safe(true)".

Try something like this:

    class Mambo
      attr_accesstor :safe
      alias :safe? :safe
    end

Here it is in action:

    irb(main):001:0> class Mambo
    irb(main):002:1>   attr_accessor :safe
    irb(main):003:1>   alias :safe? :safe
    irb(main):004:1> end
    =3D> nil
    irb(main):005:0> m =3D Mambo.new
    =3D> #<Mambo:0x000001010cab50>
    irb(main):006:0> m.safe =3D true
    =3D> true
    irb(main):007:0> m.safe?
    =3D> true
    irb(main):008:0>

--=20
Aaron Patterson
http://tenderlovemaking.com/

--qDbXVdCdHGoSgWSk
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (Darwin)

iQEcBAEBAgAGBQJLwnLpAAoJEJUxcLy0/6/Gma8IAI3uRp74g1jLJgZvIitAizpD
QCg+eYbkq8k43ciOe8tZey98cf3cdMgHDRdNNvX9wJ9xDFTe9kgFkzdOEuoquH1t
rxgMAizJe4zhrw2j+vWVkFhs3PLLGc4vN7hNduQ7DumcuYDS7PXv0OjoWYmNwPcB
oSuestIYpgfIJz5zlRKcsuGwJ8+x2Yn3WFgCmbuN31R5OwY+d6J+yi6NX23tI7Wq
CPzjjfyGdfaRzJA27SpB8HFpzqpuHDc6L7IniniaX1RcaislxPQ7J3DX1lus2Q1q
7Mlj6+ncpHDdBO8dK+pEKsVEGvVwRg6E5Y3maSwXd4l6mt7OhXGPTDyfsrLmJJ4=
=GiUg
-----END PGP SIGNATURE-----

--qDbXVdCdHGoSgWSk--