On Sun, 7 Apr 2013 22:27:15 -0400, Tony Harminc wrote:
>On 7 April 2013 20:19, Paul Gilmartin <[email protected]> wrote:
>
>> Slight correction. The UNIX "version of SUPERC" is "diff". (I suspect
>> they use similar algorithms.)
>
>Not so similar, as you pointed out back in January:
>
>>On 8 January 2013 15:02, Paul Gilmartin <[email protected]> wrote:
>
>>That's somewhat old technology. If from the ISPF SuperC panel, 3.13,
>>you press HELP, then ENTER, then 17 (Notes and Limitations), then
>>1 (Technical Overview), you can read a description of what SuperC
>>tries to do.
>
OK. I looked further:
http://en.wikipedia.org/wiki/Diff
...
Algorithm
The operation of diff is based on solving the longest common subsequence
problem.[3]
...
The text gives some history and mentions "heuristics" with little technical
explanation. More information must be available (after all, it's open source).
But so far, I don't know how profoundly different the techniques are, nor
what their comparitive strengths may be.
Both programs are of good quality and suitable for everyday use. I
use each in various situations.
-- gil
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