gistfile1.erl

fib_list(0) -> 0;
fib_list(1) -> 1;
fib_list(N) ->
    fib_list(N + 1, [1,0]).

fib_list(End, [H|_]=L) when length(L) == End -> H;
fib_list(End, [A,B|_]=L) ->
    fib_list(End, [A+B|L]).

Ouch! Don't use length(L) in a loop! It has to traverse the list L to count the elements each time. You could use a separate accumulator variable N to keep track of the length of L.

I agree

Either way, the point was to show one person how lists are constructed

Right.