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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.
You are right. I just made some random changes to see how this "kumite" works...
But I'm still not sure...
How is a lambda function an improvement? I checked it myself - perfomance of
defandlambdais almost identical. Also, one-liners do not improve readability in most cases. You made it shorter, removed choice of not preopening file. Preopening file is good for high perfomance, but it takes lots of RAM, so, sometimes it's better to keep the file closed until the moment you actually need it.This comment is hidden because it contains spoiler information about the solution