From: James Herdman <james.herdman@...>
Date: 2008-09-05T21:51:37+09:00
Subject: Re: [ANN] recurrence 0.1.0, Ruby library for recurring stuff

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>
> ** Set-like operations
>
> why? when would you need/want this?


There's a project similar to the GP's called Runt that I used at work for a
calendaring program.  This program had to handle expressions like "every
15th and 20th business day, effective July 20th, 1987".  I used Runt's
set-like operations for that example.

James

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