Very instructive Kata! Thanks!!

It is necessary to add to the condition that the Euclidean distance must be rounded down before comparing with the radius, otherwise this was not initially described in any way.

I was fortunate that I have some experience proving things in Agda; it definitely helped me here.

For those who were struggling on getting Haskell to type check, I was able to get predictable results once I realized that any expression of (NextOdd m) or (NextEven m) was S^2 of some m, and that I also knew the parity of m by definition. Then I could just unfold the expressions in terms of n or m using the exact definitions for Mult and Add on paper for the cases I was considering, keeping in mind the nesting. Because it is trivial to determine the parity of all the terms in the expression, once I had the "shape" of the unfolded expressions on paper, it was just a matter of using the lemmas we already proved to recompose the expression in the form of the lemma analogs we defined for arithmetic, working from the innermost nested expression outward. Hope that made some sense. This was a fun kata, and bumped my score by 2 kyu.

Would have been even kinda easy if I knew Haskell on any acceptable level. Most struggles were to make types work out and complie : |

Why is Idris an option here? there is an Idris equivalent of this problem that is only 7 KYU

nvm, never thought changing a variable's position matters

I have a problem while attempting my code

The error is : "Import declarations must hide Unsafe.Coerce"

BTW I have used:
import Data.Coerce
import Unsafe.Coerce
import Data.Typeable
import Data.Type.Equality

Still showing the error.
Can anyone solve this bug :)

This fork should solve all issues:

• Updated to latest Rust version
• Updated description to current version to avoid merge issues
• Updated Initial Solution so it now compiles straight away
• Made more obvious assertion messages
• Updated random tests:
• • Upped count to 100 tests
• • Made generation more efficient
• • Made empty inputs possible
• • Included other bracket types as stated in description

Updated to Node v14

Approved

Approved

COBOL translation.

Lua translation pending approval.

This kata is really interesting!!!!!!! (After getting hands on some coq)