AW: slide: useful function?

[Nick Name]

On Mon, 2 Dec 2002 13:05:27 -0500
"David Bergman" <davidb@home.se> wrote:

> or using highly formal language,
>  with terms such as "catamorphisms".

Ok I can't resist longer. It's ages I have been wondering what's a
catamorphism, and an anamorphism, and what the hell does it mean "data
is expressed by destructors and not by constructors", but I have had no
time till now. Please some of you all catamorphism experts tell me a
good and clear article to read :)))

Vincenzo 

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