thank you.

Check out this article.
https://dtang.dev/2019-01-10-capturing-functions-and-expressions-in-elixir/

could you explain the ampersand syntax to me?

I don't knew this feature, thanks for the solution

Thanks!

Now it works! I'm happy :)
Thank you. Good kata for me.

Sorry for my mistake. Hopefully it should really work now. Thanks for your patience!

Oh, I misunderstanded. Sorry.
I tryed it. But still failed.

example

testing(4, 8, 268745, 269161, [
[268793, 268801], [268820, 268828], [268917, 268925], [268962, 268970], 
[268964, 268972], [268990, 268998], [269012, 269020], [269038, 269046], 
[269042, 269050], [269070, 269078], [269110, 269118], [269118, 269126], 
[269122, 269130], [269132, 269140], [269157, 269165] ])

When I said you could give it a try I meant: try again the kata, your solution should now work. You could also mark the issue as resolved if it works.

Thanks for your fast reply.
I'm newby of codewars. So could you tell me which document should I read for trying it?

You are right. Should be fixed now. Could you give it a try? Thanks for your post.

(Elixir)

I got failed message at random test,

testing(3, 10, 214945, 215395, [
[214971, 214981], [215026, 215036], [215035, 215045], [215037, 215047],
[215039, 215049], [215049, 215059], [215092, 215102], [215098, 215108],
[215105, 215115], [215122, 215132], [215155, 215165], [215159, 215169],
[215164, 215174], [215171, 215181], [215195, 215205], [215199, 215209],
[215201, 215211], [215233, 215243], [215237, 215247], [215243, 215253],
[215266, 215276], [215267, 215277], [215291, 215301], [215314, 215324],
[215327, 215337], [215339, 215349], [215395, 215405] ])

Is this test correct?
Last element of expected list, [215395, 215405]'s 2nd element is larger than testing 4th argument(215395).