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Re:Low Level Bit Hacks You Absolutely Must Know by strlen on Wednesday July 01, 2009 @03:46AM (#682256)
Here's an example where a web developer may find bit=fiddling useful:

- How would you, compactly and discretely, represent in a cookie the days on which a user has visited your site this month?

(I am decided not a web developer, but this is a question I'd ask a web developer on a phone screen were I to hire one).

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