Author: Uri Blass
Date: 15:47:17 12/31/02
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On December 31, 2002 at 18:08:57, Jon Dart wrote: >On December 31, 2002 at 17:49:52, Uri Blass wrote: > >>I am interested to know if using 4 killers is a new idea or maybe this idea is >>known to be used by other programs. > >This is a well-known idea. Ed's "mate-killer" idea is new, AFAIK. Maybe it is known but not to me. I thought more about pruning and extensions and did not work a lot about move ordering but I remembered 2 killers and not 4 killers from discussions. Ed's way of presenting things is productive because the problem with source code is that I am usually too lazy to try to read and understand it when I do not know when to begin to read. I got the impression that crafty use 2 killers in the last time that I looked at it but maybe I understood wrong(it is not important now for me to look at it again) Do all the good programs(with source code) use 4 killers in that order? Do programmers test to compare with other possibiliries(3 killers or 5 killers or different order) > >>I still do not use check bound software. >>I asked in a previous discussion about checking bounds but I solved the >>problem that caused me to ask about it and I also read a claim that if a >>varaible is out of bound the program should crush. > >Bounds Checker is an excellent program. It is neither free nor cheap, but >is easy to use and well-integrated with Visual C++. I highly recommend it. > >There are free libraries and tools that can do some of the same things, >but the ones I've seen are not easy to use, and some conflict with VC++ >libraries and headers. > >--Jon Yes I guess that not having check bounds is a kind of time bomb. you may test idea and find that the idea is bad when the real reason is some A[-1] that has different influence and not the idea when the different influence is not crushing. Uri
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