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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.
Using gsub! would only apply the subtitution once, so '(({}))' would go to -> '(())'
The while loop continues until gsub returns a falsey value, at which point the string is either empty or the match could not be found.
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Could someone talk me through this one, I'm having trouble getting my head around it. Thanks!
Just wondering how it is that you can have a regex character range in a string like that?