hi @Chrono79, yes I've just signed up and I am quite beginner, and I wrote that as I was initially going for your solution, but as I'm learning, I've acctually looked up for some methods, rather than using what I knew already.I was not aware that users can read comments to katas' solutions before to actually solve the katas (I tought users read comments only to take part to a conversation after viewing the answer, or to praise the solution, I have done with you. But I have by now researched that the Spoiler flag is for hiding comments that might contain hints for solutions, and create unfair advantage). Thanks!

there is actually no need to save into variables the functions in our answers to these exercises, as we're not asked to then use them as parameters in higher order functions, so we can use a function expression, rather than a function declaration (plus, especially with the concise arrow syntax, we can use functions diretly as argumemts in other functions, or define and call them at the same time as an IIFE, eg. ((n)=> {console.log(n=5);}10); that logs 15)

well actually the prompt said crystal clear that were ordered, and even said in which direction and with the extremes included: " Given a list of unique numbers sorted in ascending order, return a new list so that the values increment by 1 for each index from the min to the max value, both included"

Hi, I see you're new. Mark your post as having spoiler content next time, please.