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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.
Not only I had to look up the rules, I had to use a dictionary for two new english words :-) Scalene and Isosceles. Never heard of Equilateral either, it was quite obvious though. Not complaining, just saying...
Example added to description
Agreed, rather than making the user look it up, or recall their geometry course :)
what do you mean 'in the wrong cases'?
int32_to_ip(0) => "0.0.0.0"