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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.
"Declaring var
divinside for loop works only because of hoisting."Yes.
"...if
varis changed tolet..."Don't, I'm hoisting here.
It's the value currently calculated, to which we add the price. I guess it can be seen as previousValue, depending on how you think of the operation itself.