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| From | Dennis Lee Bieber <wlfraed@ix.netcom.com> |
| Subject | Re: Classes |
| Date | Sun, 02 Nov 2014 11:31:12 -0500 |
| Organization | IISS Elusive Unicorn |
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Show key headers only | View raw
On Sun, 2 Nov 2014 12:27:06 +0000 (UTC), Denis McMahon
<denismfmcmahon@gmail.com> declaimed the following:
>On Sun, 02 Nov 2014 21:32:13 +1100, Tim Delaney wrote:
>
>> On 2 November 2014 20:50, Denis McMahon <denismfmcmahon@gmail.com>
>> wrote:
>>
>>> The question (I thought) was to write a class for Square that inherited
>>> a class Rectangle but imposed on it the additional constraints of a
>>> square over a rectangle, namely that length == width.
>>>
>>>
>> I'm late to the party and this has already been partially addressed in
>> the thread, but it always annoys me. A square is as much a rhombus with
>> 90 degree angles as it is a rectangle with equal length and width, and
>> yet I *never* see the former given as an option.
>>
>> If course, that's probably because rectangles have a multitude of uses
>> for user interfaces, whilst other quadrilaterals are somewhat less
>> useful.
>
>And perhaps that also addresses the square - rectangle (or circle -
>ellipse) issue - square, rectangle and rhombus are all forms of
>quadrilateral, and perhaps should all inherit a base class Quadrilateral,
>rather than trying (and partially failing) to inherit each other.
I'd class them as parallelograms -- as they differ from a trapezoid in
that opposite faces are parallel... Not to mention "arrow heads" where two
adjacent sides actually bend inwards.
--
Wulfraed Dennis Lee Bieber AF6VN
wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/
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Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 16:16 -0400
Re: Classes sohcahtoa82@gmail.com - 2014-10-30 13:33 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 17:00 -0400
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-30 13:34 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 17:00 -0400
Re: Classes Larry Hudson <orgnut@yahoo.com> - 2014-10-30 14:28 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-30 17:34 -0400
Re: Classes sohcahtoa82@gmail.com - 2014-10-30 18:21 -0700
Re: Classes alister <alister.nospam.ware@ntlworld.com> - 2014-10-31 09:59 +0000
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 10:07 -0400
Re: Classes "ast" <nomail@invalid.com> - 2014-10-31 10:05 +0100
Re: Classes "ast" <nomail@invalid.com> - 2014-10-31 10:18 +0100
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-10-31 20:21 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 10:05 -0400
Re: Classes Ian Kelly <ian.g.kelly@gmail.com> - 2014-10-31 08:47 -0600
Re: Classes Grant Edwards <invalid@invalid.invalid> - 2014-10-31 15:49 +0000
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 12:31 -0400
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 03:37 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 12:47 -0400
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 04:02 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 13:31 -0400
Re: Classes Zachary Ware <zachary.ware+pylist@gmail.com> - 2014-10-31 12:39 -0500
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 13:57 -0400
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-31 10:40 -0700
Re: Classes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-01 11:17 +1300
Re: Classes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-01 12:06 +1100
Re: Classes Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-01 00:12 -0600
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 17:32 +1100
Re: Classes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-03 00:32 +1300
Re: Classes Dave Angel <davea@davea.name> - 2014-10-31 13:20 -0400
Re: Classes Marko Rauhamaa <marko@pacujo.net> - 2014-10-31 19:35 +0200
Re: Classes Grant Edwards <invalid@invalid.invalid> - 2014-10-31 17:40 +0000
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-31 18:26 -0400
Re: Classes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-01 12:09 +1100
Re: Classes Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-01 04:06 +1100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 13:18 -0400
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-31 10:43 -0700
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:18 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:42 -0400
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-10-31 18:57 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 19:22 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 19:32 -0400
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-01 12:00 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-11-01 12:42 -0400
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-02 09:50 +0000
Re: Classes Tim Delaney <timothy.c.delaney@gmail.com> - 2014-11-02 21:32 +1100
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-02 12:27 +0000
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-02 11:31 -0500
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-03 03:12 +0000
Re: Classes Dan Sommers <dan@tombstonezero.net> - 2014-11-03 06:29 +0000
Re: Classes Denis McMahon <denismfmcmahon@gmail.com> - 2014-11-04 01:10 +0000
Re: Classes Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-04 18:30 +1300
Re: Classes Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-03 08:50 -0500
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-04 02:34 +1100
Re: Classes Ian Kelly <ian.g.kelly@gmail.com> - 2014-11-03 07:47 -0700
Re: Classes Larry Hudson <orgnut@yahoo.com> - 2014-11-02 14:03 -0800
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 07:51 +1100
Re: Classes sohcahtoa82@gmail.com - 2014-10-31 14:24 -0700
Re: Classes Rob Gaddi <rgaddi@technologyhighland.invalid> - 2014-10-31 14:40 -0700
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 08:56 +1100
Re: Classes Chris Angelico <rosuav@gmail.com> - 2014-11-01 08:36 +1100
Re: Classes Grant Edwards <invalid@invalid.invalid> - 2014-10-31 17:43 +0000
Re: Classes Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-10-31 14:11 +0000
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 12:49 -0400
Re: Classes "ast" <nomail@invalid.com> - 2014-10-31 19:31 +0100
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:36 -0400
Re: Classes Joel Goldstick <joel.goldstick@gmail.com> - 2014-10-31 14:41 -0400
Re: Classes Seymore4Head <Seymore4Head@Hotmail.invalid> - 2014-10-31 14:56 -0400
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