So it is an inline conditional... here is an article explaining it better than I could.. :)

https://www.natashatherobot.com/ruby-shorthands-if-then-else/

I think there is a bug in the ruby implementation as when the random test I get the following error:

expected '0' got '1'... when I looked into this the error was caused by the equation "x-66" with a point value of "0"

Unless I am very much mistaken the differential of x is 1 not 0. Please update as required.

I am getting a very annoying and totally unexpected error:

Expected: "1110001000001110010010000100100000", instead got: "Not a integer"

I have no idea why I am getting this or what is causing it. I feel like I have followed the instructions, any help would be appriciated.

Also, I why does the ruby imnplementation need to use an integer representation, but the test output want a string..

The following test could be added for completeness:

Test.expect(![1, [1, 1]].sameStructureAs([[1], [1, 1]])

As currently code can that passes all your tests can fail this one. :P

So to confirm, the test fails saying it expects 440, my code generates a value of 470 which looking at the test data appears correct.

Should the result of the last test be 440 or 470?