That's something I didn't know, thanks! It's fixed now :)

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0 could be a good idea for the beauty of solutions.

"Having a failure share representation with success can lead to failures accidentally being treated as success."
If you can treat negative length of the side as a success it means you didn't understand the task. You can't have a piece of stick of a negative length.

"If not knowing about the possible None, that is still better than not knowing about the possible -1, being forced to deal with it is the whole point."
None can be an indicaion that there occured some case that your code didn't take care of. I still opt for -1 as an indication of no square case.

"s/brake/break"
I didn't understand it. Where is it? How did you come across it?

I would like the output to remain integer.

Both 0 and -1 make equal sense to me, both indicate that there can be no square constructed.

Or just 0 (would make sense)...

approved by someone

[list] + [list] is not tested.

It allows a different implementation of [list] + [list].

Isn't that being tested?

Thank you very much for your feedback.

• The typos should be gone now.
• I have added custom error messages just like you instructed me for the random tests (btw: now they look really cool :) )
• Got rid of the sol global 'abomination' XD (I am kind of new to this, so I was not really sure why using a global var is so bad.)
• The fixed tests are now really fixed
• Random test cases are now under 'Random test cases'.

Thanks again for the help.

The process of making an update kind of sets an expecation of getting everything right the first time and never changing your mind later

A translation is essentially supposed to be just a "port" of the original - if you want to be more creative then you should author a new Kata ;-)

Approved again.

Please fork, else I will mess it up. I don't know Haskell. I will approve asap.

Thanks for the feedback! I can't seem to edit the test cases, though.

The point of contention is how to deal with females in the lineage. In particular, the question is whether the presence of a female...

1. instantly disqualifies all further siblings of being considered a seventh son (this is the only bit the description describes)

• 2a. instantly disqualifies all further siblings (male or female) of being the ancestors of any seventh sons (i.e. this particular branch in the tree is completely disregarded)
• 2b. can the female herself be the ancestor of a line of seventh sons

The random tests do not appropriately cover this (as can be seen in my solution, which terminates the search in a given branch if a female is found within the first 7 children of any given ancestor)