Loading collection data...
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.
"to equal" is different from "to become", the problem is that your answer is not equal to the expected answer.
next you'll want to find out what the input was.
I cant figure out why this is expected - 'foobar0100' to equal 'foobar100'
Based off the question examples shouldnt 'foobar0100' to equal 'foobar0101' or am I being extremely dense.