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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.
Agreed. I found this way too straight forward.
Yup! A friend signed up after Python was added to the kata languages and I was surpised it wasn't an option in the landing-page challenges. Glad you've added it; sorry for the late report!
We added Python to the landing page challenges a few days ago. Is that what you mean?
Are you also going to add Python to the list of "gateway" languages in which you need to solve problems in order to sign up?
I don't mind "head" and "tail" for car and cdr, but considering how many languages use "push" for append, using it for cons was momentarily confusing. Even "unshift" would have been better.
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How does this even work? In MRI I get an error about @@subclasses not being initialized. For this to work, it should be a class-level instance variable (@subclasses) rather than a class variable.
I think traditional Pig Latin would be a better challenge - if a word starts with a vowel, you interpose a 'w', so that "is" becomes "isway" instead of "siay". That introduces some ambiguity, especially in the spoken variety (was that "isway" or "izway"? "is" or "wiz"?) but yields a much more pronouncible code.
The solution display breaks rather badly on regexes with negative lookbehind, it seems..