J Collection of Tasks with comparison to other languages RosettaCode

[Mike Chris]

Hi,

I wanted an easy way to view J task code examples, with comparison to other languages.

It is an indexer of RosettaCode.org

https://code2compare.com/J_JavaScript

Feedback would be appreciated.

M.

[Mike Day]

Looks nice.   

Does it cover all the RosettaCode tasks?  The topic at 

https://rosettacode.org/wiki/Partition_an_integer_x_into_n_primes 

caught my attention some months ago; (I'd been wondering whether 

to post an alternative solution!). I've just managed to find it by 

searching for "parti" in the RosettaCode site,  so it's still there.  

However,  your filter doesn't find this topic with the same token;  it 

does find "Partition function P" and "Ordered Partitions",  but not 

"Partition an integer x into n [distinct] primes."

A minor quibble,  I hope!

Mike

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On 24 May 2026, at 10:33, Mike Chris <mchristo...@gmail.com> wrote:

Hi,

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[Mike Chris]

Thanks so much for the feedback Mike Day.

It lists tasks where Solutions exists for both selected languages.
So https://rosettacode.org/wiki/Partition_an_integer_x_into_n_primes 
is there if languages are J+Python or J+C etc..

M.

[Michael Day]

OK - I hadn't spotted that there's a choice of Langs.  

So I thought - "I'm only interested in J - what about putting in J 
instead of JavaScript?"  But the Find Tasks button stays dimmed 
with 2 Js.  Anyway,   I found my pet task when I dug down as far 
as Python!  

Heaven help us,  there are 1811 Languages!   So a language filter 
would be nice if one were interested in many comparators.  

Apart from J,  your app would help in conparing solutions where, 
on the RosettaCode site,  at the top of one solutions,  say in "D" , 
we see "Translation of Kotlin" ,  for example.

Thanks,

Mike

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