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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.
Thanks! The problem has been solved.
I got some wrongs in this Kata:such as，Line count is not equal 44 - Expected: 44, instead got: 43。But every line of test was passed.The line count are always small.
in js:
TypeError: Cannot read property 'length' of undefined
at test_array_diff
at Object.handleError
at ContextifyScript.Script.runInThisContext
at Object.runInThisContext
int or var