103 passed 1 failed...can't figure out what 'the walk should bring you back to start' means

Can someone explain what's going on here, please?

What's that?? How does it work?

Fantastic!

Was a hard kata for me. Defo, not 8 kyu

Thanks for your explanation.

array || [] evaluates to array when array is a truthy value and otherwise evaluates to an empty array.

So, array = array || [] will set array equal to an empty array if it does not already refer to an object.

Not sure what array = array || [] means and how it returns 0

So elegant!

OMG!!

How does this code work? I tried it in the VS and it didn't, because r is not defined.