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| From | Martin Gregorie <martin@address-in-sig.invalid> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: What's the best way to make a cross string set? |
| Date | Sat, 5 Aug 2017 20:31:36 -0000 (UTC) |
| Organization | A noiseless patient Spider |
| Lines | 21 |
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On Sat, 05 Aug 2017 16:08:36 -0400, Eric Sosman wrote: > Upon reflection, strike "in a sensible way" and replace with > "at all, without violating the contract of Comparable." The problem is > that Comparable must implement a /total order/, which means (among other > things) that it must be asymmetric: The sign of x.compareTo(y) must be > opposite that of y.compareTo(x), or both must be zero. Now, you may > contrive a class that claims to implement Comparable<Object> and endow > it with a compareTo() method that does, in fact, accept any kind of > Object and return some kind of result > There are other implications that seem to me to make this an absolute requirement. Eric's switchable comparison would have severe side effects on other classes, e.g. changing his style switch setting should logically force a SortedMap to automatically reorder itself. -- martin@ | Martin Gregorie gregorie. | Essex, UK org |
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What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-27 12:12 -0700
Re: What's the best way to make a cross string set? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-07-27 14:38 -0500
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-27 12:49 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-07-27 15:49 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-27 12:55 -0700
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-27 13:22 -0700
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-27 13:30 -0700
Re: What's the best way to make a cross string set? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2017-07-27 15:34 -0500
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-07-27 18:27 -0400
Re: What's the best way to make a cross string set? lewbloch@gmail.com - 2017-07-28 18:51 -0700
Re: What's the best way to make a cross string set? v_borchert@despammed.com (Volker Borchert) - 2017-07-29 06:03 +0000
Re: What's the best way to make a cross string set? v_borchert@despammed.com (Volker Borchert) - 2017-07-28 18:19 +0000
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-28 13:28 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-07-28 17:20 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-31 05:24 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-07-31 12:01 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-07-31 10:58 -0700
Re: What's the best way to make a cross string set? Sebastian <nowhere@nirvana.org> - 2017-07-31 18:13 +0200
Re: What's the best way to make a cross string set? lewbloch@gmail.com - 2017-07-31 09:24 -0700
Re: What's the best way to make a cross string set? Arne Vajhøj <arne@vajhoej.dk> - 2017-07-31 19:24 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-01 06:36 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-08-01 10:58 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-01 08:09 -0700
Re: What's the best way to make a cross string set? lewbloch@gmail.com - 2017-08-01 09:39 -0700
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-01 10:18 -0700
Re: What's the best way to make a cross string set? Andreas Leitgeb <avl@logic.at> - 2017-08-02 09:22 +0000
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-02 05:13 -0700
Re: What's the best way to make a cross string set? Andreas Leitgeb <avl@logic.at> - 2017-08-03 14:33 +0000
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-03 08:51 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-08-03 12:20 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-03 10:15 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-08-03 13:42 -0400
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-03 11:17 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-08-05 16:08 -0400
Re: What's the best way to make a cross string set? Martin Gregorie <martin@address-in-sig.invalid> - 2017-08-05 20:31 +0000
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-08-05 17:25 -0400
Re: What's the best way to make a cross string set? Martin Gregorie <martin@address-in-sig.invalid> - 2017-08-05 22:11 +0000
Re: What's the best way to make a cross string set? Sebastian <nowhere@nirvana.org> - 2017-08-06 18:13 +0200
Re: What's the best way to make a cross string set? Eric Douglas <e.d.programmer@gmail.com> - 2017-08-02 12:56 -0700
Re: What's the best way to make a cross string set? Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-07-29 16:55 -0400
Re: What's the best way to make a cross string set? Sebastian <nowhere@nirvana.org> - 2017-07-29 23:56 +0200
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