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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.
I like this one
great solution !
They're clearly two different elements.
Very similar to mine, but slightly different
Nice and clean, I like this :)
XD I guess writing normal solution is no fun
"Write a function that returns the number of occurrences of an element in an array."
If the element is an "a" and there is an element "aba" in the array it should say in the description not to count letters there. It is unclear.
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This comment is hidden because it contains spoiler information about the solution
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I had the same question until I found this article, it's basically Select:
https://stackoverflow.com/questions/2113258/why-is-the-linq-apply-to-all-method-named-select