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From Jedediah Smith <>
Subject Re: Simple rereduce introduction tutorial
Date Mon, 01 Dec 2008 11:23:45 GMT

I just updated that page with a more detailed explanation of reduce and 

Rereduce must *always* be taken into account, though it can often be 
handled implicitly by the same code as reduce.

Here is a simple example of a view in which that is not the case:

Dmitrii Dimandt wrote:
> Does anyone have an easy-to-understand introduction to/tutorial on the 
> rereduce argument in the reduce function?
> I *sort of* understand why it's there and I have a vague understanding 
> of how to work with it, but this understanding is just that — vague.
> What I would really like to see is a couple of examples and explanations 
> on how and when it should be taken into account when creating the reduce 
> function

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