Have fun reading, and avoiding lists from here on!

Except maybe the haskell-cafe list. 2017-03-09 16:07 GMT+01:00 Johannes Waldmann < johannes.waldmann@htwk-leipzig.de>:

Dear Cafe,

I wrote a text (well, you might call it a rant) on the tragic over-use of lists in Haskell, based on my experience in programming and teaching.

http://www.imn.htwk-leipzig.de/~waldmann/etc/untutorial/list-or-not-list/

* If your program accesses a list by index (with the !! operator), then your program is wrong. * If your program uses the length function, then your program is wrong. * If your program sorts a list, then your program is wrong. * If you wrote this sort function yourself, then it is doubly wrong. * The ideal use of a list is such that will be removed by the compiler. * The enlightened programmer writes list-free code with Foldable.

Have fun reading, and avoiding lists from here on!

- J.W. _______________________________________________ Haskell-Cafe mailing list To (un)subscribe, modify options or view archives go to: http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe Only members subscribed via the mailman list are allowed to post.

On 10/03/2017, at 4:07 AM, Johannes Waldmann wrote:

* If your program sorts a list, then your program is wrong.

This seems a very strange claim. The whole thing is an abuse of the word "wrong". A program can be all of ugly, inefficient, unidiomatic, &c &c without being WRONG.