Re: [Haskell-cafe] rolling span and groupBy for lists

On 6 February 2018 at 00:33, Sergiu Ivanov wrote:

Thus quoth Harendra Kumar on Mon Feb 05 2018 at 18:30 (+0100):

...

Yes, Hayoo seems to be giving better results, I found more variants having the behavior I want, it seems this variant is quite popular but still not in any standard libraries.

Interestingly the problem of too many choices and no standard one that can be discovered applies to search engines as well. In this case there are only two choices but still it is of the same nature. I knew about hayoo but forgot to use it in this case. How much time should one spend on finding a trivial function before giving up and making the choice to write their own? I wish there was a standard, quick, good quality way of discovering what to use. It seems the Haskell ecosystem DNA encourages more and more fragmentation rather than consolidation. I think the community/leaders should acknowledge this problem and work on making things better in the short/long run.

A Single Liberal Unified Registry of Haskell Packages (SLUPR), an effort in this direction, has been recently announced:

Unfortunately, in my opinion, SLURP is taking things exactly in the opposite direction. I was talking about the problem of choice above and SLURP is giving even more choices and therefore encouraging more fragmentation. We should have just one good choice to stop wasting time and energy finding the best choice among millions available. Everyone should focus on making that one choice better rather spending energy in creating their own alternatives. This is where the Haskell ecosystem philosophy differs, it provides many choices in all aspects, it may be good in some cases but not always. SLURP is a technology solution which exactly fits in the same DNA. Technology can help us achieve the tasks that we set out to do but technology cannot motivate and influence us in what we choose to do and therefore ti cannot make the community focus on one goal - that requires real people leadership. If we do not focus on one goal, even with the best technology we may not succeed. Just my 2 cents. -harendra

...

-harendra

On 5 February 2018 at 22:02, Sergiu Ivanov wrote:

...

Hello Harendra,

Thus quoth Harendra Kumar on Mon Feb 05 2018 at 16:43 (+0100):

...

The irony is that theoretically you can find a Haskell package or implementation of whatever you can imagine but quite often it takes

more

...

time to discover it than writing your own.

Sometimes Hayoo! helps me out in such situations:

http://hayoo.fh-wedel.de/?query=groupBy

utility-ht shows up.

-- Sergiu

-- Sergiu