How can I let-bind a variable to input read with `completing-read`?

Question

How can I store the selected value in a let variable when using completing-read ?

(let ( (selc '("Lower-Skeleton" "Upper-Skeleton")) )
  (completing-read "Vista: " selc nil t "Upper-Skeleton")

Answer 1

You use setq just like with any other variable:

   (let (foo)
       (setq foo (completing-read ....))
       ;; do something with `foo'
       ...
   )

foo's scope is limited to the body of the let form: it's a local variable. Other than that, it's just like any other variable.