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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.
Who needs regex. ;-) Actually there's no need to apply a "fix" when you figure out how many components the result will consist of before building it and use
" and "
to separate the two final components regardless of what they are (days, hours, ...).Try a regex that targets that last ',' and replace it in the formatted string or use
lastIndexOf(',')
to the same effect.