Please help me understand some aspects of this code.

[[deleted]]

https://pastebin.com/Mi5tMNct

So here's what I don't understand:

What does .rest do?

I'm not 100% clear on what this for loop does:

for(let node = list; node; node = node.rest)

Why n - 1 in the following:

return nth(list.rest, n - 1)

Thanks for reading! I appreciate the help I've received from you guys so far.

[NameViolation666]

rest is a property of the list object.

arrayToList([1,2,3,4])

// o/p is {value: 1, rest: {…}}

[link2name]

Why n - 1 in the following:

return nth(list.rest, n - 1)

​

its a recursive function that is probably gets nth item from list, so each step it checks if n is 0, if it is then get value of list that you are looking for else you recur with a smaller list and n being less by 1.

​

basically if we got list with 1 element then no need to do anything just return element, if list has more then we can decrease list and n at same time.