[Haskell-cafe] To [] Or Not To []

JK jerzy.karczmarczuk at unicaen.fr
Sat Mar 11 00:42:07 UTC 2017


Le 11/03/2017 à 00:28, Olaf Klinke a écrit :
> Actually, your negative abstract turns out to be for a quite positive article. List are like iterators, that's the essence, and as long as you are iterating, it's fine to use []. The prominence of singly linked lists in Haskell has tought me to write my data processing programs in a streaming style.
*Yes.* I've been teaching not just "data processing" - after all almost 
everything we program is "data processing", no?... but such concrete 
stuff as physics simulation (diff. eqs.), some other numerics 
(asymptotic expansions, etc.) signal processing (including sound 
generation), and I liked to present several examples in a *dataflow 
style* with plenty of co-recursive contraptions. Haskell lazy lists were 
natural, concise, and easy to manipulate.  We enjoyed it, wrong or not.

Nothing is perfect, not only  mister Nobody; calling ANY approach to 
programming "wrong" is sectarian. A professional coder working on a 
concrete project may say bad words about anything he wishes, but for a 
teacher this is a pedagogical sin, and inefficient programs can be more 
inspiring than some "correct" doctrines.

Jerzy Karczmarczuk

L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
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