Gaea Times Micro Blog


  • 07:31:44 pm on January 16, 2010 | # |

    Beware of implementing Java Comparable.Here is why…

    When implementing compareTo() the normal inclination is to provide the real difference (negative or positive) when a match is not found. Today this lead to a subtle bug which was only discovered when the software was tested over a very large data-set.

    What happened: Comparing Long and providing the difference as int (return type of compareTo) is a potential sand trap. As positive Integer can only be up to 2 billion, anything beyond that and it silently turns it into a negative integer!

    Bottomline: Simply return +1 or -1 as appropriate when a match is not found.

    How we discovered the bug: Through high volume of unit testing using random data over the entire data range (2^32 - 1).



  • film izle 3:07 am on June 5, 2011 | #

    film izle…

    Great articles & Nice a site.. Hey very nice blog!!…

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