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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
From the description:
The empty string "" can be read forward or backward the same, it's a palindrome in our case.
Ah ok - I'm more of a frontend web person so my Ruby is a bit unpolished. But I think what you're looking for is the splat operator, which gathers all args into an array (like the spread operator in JavaScript). Haven't actually tried my own kata in Ruby so not sure I'm qualified to help, but hope that's of some use!
Sorry @veronicacannon - didn't realise that flagging it stopped people seeing my comments (thought it just flagged it up as potentially spoiler so gave you the option). Have unflagged it now.
he cant read it because it's marked as a spoiler so this isnt much help to him
Two options in Javascript:
Option 1 works on all browsers, so is more universal. Option 2 syntax is much nicer. Hope this helps. Good luck!
The question in the kata is "is it all whitespace"? The first example has some letters in it as well.