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.
I like where this is going!
Based on the description, I was anticipating mapping the proc over the same elements repeatedly, not repeating the elements, then applying the block.
Either the description should be re-written, or the test cases should be re-done.
Fun to play with functions like this, either way!
The question wording needs editing. There are some grammatical issues, and a few points that can be clarified. I'll offer some alternatives later on.
It might be important to distinguish between variance and standard deviation.