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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.
No random tests
Base conversion is a duplicate to many existing katas.
It's a bit weird that the function should return
""
when the input is empty, and throw when the input contains invalid characters. Can't you just have the function return an optional, and have us returnnil
if the input is invalid, no matter the reason?What should we do when
string
is not in basefrom
?Example: