IMO, Nicolas' material is a distraction in understanding reducers, except as 
historical background.

The reducers library is a rejection/avoidance of the primacy of 
recursively/generatively defined data structures and the operations thereon.

I recommend, rather than reading about stream fusion, one watches the Guy 
Steele presentation linked from the post:

Organizing Functional Code for Parallel Execution 
or, foldl and foldr Considered Slightly Harmful:

http://vimeo.com/6624203

Which boils down to - stop programming with streams, lists, generators etc if 
you intend to exploit parallelism, which the reducers library does.

Rich

On May 10, 2012, at 1:26 PM, Christian Romney wrote:

> 
> 
> On Thursday, May 10, 2012 8:02:09 AM UTC-4, Nicolas Oury wrote:
> I can describe the background to understand my last email. 
> 
> Thank you very much for taking the time to post all of that–I've got some 
> reading to do for sure. 
> 
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