Sometimes I need to loop through consecutive pairs in a list. The way I do it right now is
(loop for x on lst while (not (null (cdr x)))
(do something on (car x) and (cadr x)))
I'm wondering if there is a better/built-in way to do this.
The reason I need this is sometimes I want, e.g. some function that add consecutive pairs
(1 2 3 4 5) ----> (3 5 7 9)
Is there any built-in function like reduce which allow me to get this?