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.
This comment is hidden because it contains spoiler information about the solution
You can read that, and more, here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
can anyone explain this solution to me, im new to forEach loops, not quite understanding how this works.
Nice!! Very useful
i think it's because if the for each didn't find a x.language, start it with a 0, otherwise it start with "nan" and you cant sum the nexts same languages
Try removing it.
why zero in solution ??
nice one