# Rolling Checksum

**URL:** <https://www.ruby-forum.com/t/rolling-checksum/188175>\
**Category:** Ruby\
**Created:** [May 6, 2010, 10:06pm UTC](https://www.ruby-forum.com/t/rolling-checksum/188175 "2010-05-06T22:06:58Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![di3go](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/a9a28c/32.png) [@di3go](https://www.ruby-forum.com/u/di3go)\
**Post date:** [May 6, 2010, 10:06pm UTC](https://www.ruby-forum.com/t/rolling-checksum/188175/1 "2010-05-06T22:06:58Z")

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Someone ever build a Rolling Checksum with Ruby?

Im curious how Rsync works want to build a small rsync in ruby just to  
study, the part i cant get over is the rolling checksum…

I dont mind how to do this.