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Re: Simple if-exercises

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From	Jeff Higgins <jeff@invalid.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: Simple if-exercises
Date	Fri, 03 Apr 2015 20:06:02 -0400
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On 04/03/2015 07:38 AM, Eric Sosman wrote:
> On 4/3/2015 2:29 AM, Volker Borchert wrote:
>> Jeff Higgins wrote:
>>
>>> Why don't we have a Quinary operator?
>>> x ? y LT : EQ : GT
>>
>> One of those occasions where "newer" is not "better".
>> 
>> I _do_ miss FORTRAN's three-way IF statement.
>
>      I miss it, but very rarely.  It's nice in a binary search,
> and it's nice in heapsort, but I can't recall other contexts
> that made me wish it were still around.
>
>      An ironic oddity: In the numerical applications for which
> FORTRAN is justly famous, the three-way IF is almost never the
> right thing to use!  You don't want "negative,zero,positive"
> but "noticeably negative,close to zero,noticeably positive."
>
I don't recall having seen a java.lang.Comparable.compareTo(T o)
implementation that uses the full range of int values in its
output. I wonder if someone could point me toward such a thing.

If Comparable is indeed used this way then I wonder about a
pluggable reduce function for it.

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Thread

Re: Simple if-exercises Jeff Higgins <jeff@invalid.invalid> - 2015-04-02 09:58 -0400
  Re: Simple if-exercises Jeff Higgins <jeff@invalid.invalid> - 2015-04-02 10:53 -0400
    Re: Simple if-exercises Jerry Stuckle <jstucklex@attglobal.net> - 2015-04-02 15:08 -0400
  Re: Simple if-exercises Gene Wirchenko <genew@telus.net> - 2015-04-02 16:46 -0700
  Re: Simple if-exercises v_borchert@despammed.com (Volker Borchert) - 2015-04-03 06:29 +0000
    Re: Simple if-exercises Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-03 10:29 +0000
      Re: Simple if-exercises v_borchert@despammed.com (Volker Borchert) - 2015-04-03 18:05 +0000
        Re: Simple if-exercises Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-03 19:31 +0000
          Re: Simple if-exercises Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-04-03 16:07 -0400
            Re: Simple if-exercises Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-03 21:45 +0000
          Re: Simple if-exercises v_borchert@despammed.com (Volker Borchert) - 2015-04-03 23:49 +0000
    Re: Simple if-exercises Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-04-03 07:38 -0400
      Re: Simple if-exercises Jeff Higgins <jeff@invalid.invalid> - 2015-04-03 20:06 -0400

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