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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.
Hey, thanks!
Take a look at these:
http://zetcode.com/lang/rubytutorial/regex/
https://www.blueboxcloud.com/insight/blog-article/using-regular-expressions-in-ruby-part-3-of-3
http://www.regular-expressions.info/
http://rubular.com/
http://regexcrossword.com/
Regex is a very powerful tool, learn it well and you will be able to solve many problems with that. Best wishes.
never seen something like this before, any resources where i can learn more about advance regex like this? thank you