When I started with ES6 section first i encountered inline functions which are not explained, but which I understood eventually, then on lesson ES6: Write Higher Order Arrow Functions I encountered
filter() , and
reduce() functions which were not explained and I have to admit I cheated on that one. I hope that later lessons will be better explained. Just wanted to share my problems with this section which could be better explained or put on the end of the section (i don’t know what is ahead).