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Re:I tried Haskell for 5 years by Veratyr on Thursday May 04, 2017 @02:15PM (#14267275)
I think I can safely say it isn't used heavily in many production environments but it is used heavily in some. For example, one of Facebook's abuse systems, dealing with 1M requests per second is written in Haskell: https://code.facebook.com/posts/745068642270222/fighting-spa...

As for particular places where it shines, I don't know of any in particular. I remember when taking my Declarative Programming course in university my lecturer loved to talk about an experiment the military did where they challenged a few teams to implement some kind of radar system in their chosen language and evaluated them based on time taken, correctness and code complexity (LOC) at the end. The Haskell team performed very very well. I can't find any details on this experiment though...

Re:I tried Haskell for 5 years by crogre on Thursday May 04, 2017 @02:35PM (#14267468)
The article you're looking for is http://www.cs.yale.edu/publications/techreports/tr1049.pdf - Two of the top three (out of ten) solutions were made in Haskell, one by a beginner.
Re:I tried Haskell for 5 years by msoucy on Thursday May 04, 2017 @03:27PM (#14267901)
It would be interesting to see the full source code for the various entries - am I missing a place to acquire them?
Re:I tried Haskell for 5 years by Veratyr on Thursday May 04, 2017 @02:51PM (#14267609)
Yep, that's the one! Looks like there were lots of problems with the experiment but good to read regardless.
Re:I tried Haskell for 5 years by coldtea on Thursday May 04, 2017 @02:36PM (#14267474)
>I can't find any details on this experiment though...

Probably this one: http://www.cs.yale.edu/publications/techreports/tr1049.pdf

But take it with some sacks of salt -- it's a single research paper. It should be replicated, peer reviewed, etc to have any merit. It's methodology could be totally crap for example...

Re:I tried Haskell for 5 years by tormeh on Thursday May 04, 2017 @03:26PM (#14267897)
It is really interesting. I do get the feeling that the researchers really wanted Haskell to win, though. It would be nice if researchers with other favorite languages also arrived at the same conclusion.
Re:I tried Haskell for 5 years by gjkood on Thursday May 04, 2017 @02:22PM (#14267333)
Ok, so the Facebook example definitely falls under a contemporary heavy production usage system. Thanks.
Re:I tried Haskell for 5 years by robertlagrant on Thursday May 04, 2017 @03:05PM (#14267730)
If you measure complexity as LOC then Haskell will do well, but you may not end up with uncomplex code :-)