I'm making a function in scheme(lisp) in which I need to cons a list with it reverse, as below:
(cons list (cdr (reverse list)))
consider I have this list '(0 1 2), the desired output would be:
(0 1 2 1 0)
but I get:
((0 1 2) 1 0)
is there any function that returns the values of the list, not the list itself?
You should read up on cons: http://en.wikipedia.org/wiki/Cons
cons will pair an element with another. If you pair an element with a list, you are adding this element at the beginning of the list. In your case, the element you are pairing to your reversed list is itself a list. See the examples on the wiki page.
What you want here is append, since you want to concatenate those two lists together.