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Journal of rafael (2125)

Tuesday September 09, 2003
05:37 PM

ESR's comparator

[ #14611 ]
Seen on /., ESR releases a code tree comparator. I'm a bit doubtful about the accuracy of the results shown by this kind of tool. [Moreover the limitations section of the manpage is just typical ESR-speak.] Anyway, this program needs some testing. Maybe will it be really good at detecting cargo-cult idioms. Anyone wants to run the following tests ?
  • perl 1.0 versus bleadperl (or any recent 5.8.1 release candidate)
  • bleadperl versus linux 2.6
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  • But then again, it's not exactly a hard task. Something like this would make a good question on a Basic Algorithms final.

    10) Describe an algorithm which can identify sections of identical text in two bodies of text. Bonus: How would you have to change the algorithm so it could work without direct access to the text.