Nicely done!! :)

ooh smart to use range. If you want to go point free you can flip the direction of composition

pyramid =
  List.range 1 >> List.map insertElements

Thanks! With your explanation I solved it very quickly. Also did not know that there is so much theory about elipse in wikipedia ))

Sure: relevant wikipedia article section and the relevant image (transparent SVG so click through the first link to wikipedia).

I'll update the description if this becomes a stumbling block for more people.

It is hard to understand task.
How 2 circles can make ellipse? Some picture would be helpfull.
Tests Passed: 925 Failed: 97

When I draw failed tests on paper P does not go out of "ellipse"

i thought that too! mega confused until i realized we were manually changing the length property.. object lengths are undefined... when array.from coerced it into an arr it managed to extract the length property, i was mistakenly thinking length was somehow going all the way to 0 on its own haha

Because if the length is 5, why would the length be 6? That is not logical...

appreciate the reply! but if Array.from() converts the argument given to an array, why does it stop at [5,4,3,2,1] with 5 elements instead of [5,4,3,2,1,0] ?

Because length-- decreases the value, but return the initial value. With --length, the result would be [4,3,2,1,0]

hmm.. why doesn't length go all the way to 0? if {length} is translated to {length: 5} and returns 5 then decrements, why does it turn into [5,4,3,2,1] ?

Thank you for pointing that out, not sure what I was thinking there.

JSYK you never need a break after a return in a case. In fact a lot of linter rules will tell you to take that out.

TYVM for doing this!! Loving learning elm through these kata

This language is so fun!! TY very much for translating this kata into it!

bravo