crc32

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index on url or hashing considering RAM

I am working on a project which needs to add/update around 1 开发者_JAVA百科million urls daily. Some days are mostly updates and some days are mostly add and some days are mix.[详细]

2023-04-04 18:30 分类：问答
What is the relation between 32bit CRC and the data word size?

if we take 32-bit CRC then the data word size will be 2 to th开发者_C百科e power of 32(2**32) plus 32 bit for CRC.... or not? Am I missing something?[详细]

2023-04-01 19:29 分类：问答
Using SSE 4.2 crc32 algorithm in c# ? Is it possible?

I have to calculate cr开发者_开发知识库c32 on a lot of files, and also huge files (several GB). I tried several algo found on the web like Damieng or this one, and it works, but it is slow (more than[详细]

2023-03-27 03:47 分类：问答
Python equivalent of unix cksum function

I\'ve been looking for the equivalent python method for the unix cksum comma开发者_如何学Gond: http://pubs.opengroup.org/onlinepubs/7990989775/xcu/cksum.html[详细]

2023-03-22 21:45 分类：问答
Hashing an IP address to a number in [0, H)

I\'m using Python-2.6. I have very little knowledge of hash functions. I want to use a CRC hash function to hash an IP address like \'128.0.0.5\' into the range [0, H). Currently I\'m thinking of doi[详细]

2023-03-21 06:51 分类：问答
Equivalent to Unix cksum in Windows

I download a file and his checksum (generated by cksum Unix command). So, I want, in my C# app test if the Checksum is in adequation with the app I downloaded.[详细]

2023-03-19 20:33 分类：问答
blackberry CRC32 issue

I\'ve been stuck on this for a few days now and can\'t seem to get it. I\'m hoping that by posting here, I\'ll have an epiphany and fix this issue 30 seconds after posting! :D[详细]

2023-03-17 15:55 分类：问答
Is it possible to do CRC-32 calculation in splits?

I use this trivial f开发者_开发百科unction to calculate the CRC checksum of a given file: long i, j = 0;[详细]

2023-03-15 11:40 分类：问答
How to calculate SFV-style CRC32 in Linux commandline?

Is there an equivalent to md5sum/sha1sum in Linux for calculating SFV-style CRC32s?I checked out cksum, but it seems to be calculating a different sum (perhaps a different polynomial? or I\'m interpre[详细]

2023-03-11 18:53 分类：问答
Do Java CRC32 implementations differ on 32Bit and 64Bit

Is there any difference between the Java CRC32 implementations on 32Bit and 64Bit JVMs? My problem is, that my client application (on a 32Bit platform) calculates a hash and compares it against a hash[详细]

2023-03-08 21:09 分类：问答