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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.
actually there is: "... ordered by the members id" - check description
You need order the results ascending and then it works because the expected results are ordered as well. It shouldn't be like this cuz there is nothing about ordering the results in the instructions
The test randomly fails and succedes for the same SQL query :( The testing framework is not robust or cannot handle temporal views.
WTF! SPOILER FLAG!! X/
and for your question, there are more cons than pros to the default argument here, because a user can accidentally mess with your function if it's not documented. Other than that, there is no real difference, I'd say (since there is no tail call optimization in python, afaik).
This comment is hidden because it contains spoiler information about the solution
you can do that all you want, you'll just have a solution that either times out or exhausts all its allocated memory. You'd bet that if something like that could cause troubles, CW would already have been down years ago... x)
Very elegant and terse solution. I am wondering that nothing prevents external users to call persistence(31, 5) which may have unwanted consequences elswhere in the codebase.