(alist-refstr alist key fbstr)

Returns the stringified value associated with the given key, or the fallback if not found

Parameter	Description
alist	association list
key	list key to lookup
fbstr	fallback string

Example

> (define a '((1 "2")(3 4)))
> (alist-ref a 1)
"2"
> (alist-ref a 4 'undefined)
undefined
> (alist-refstr a 3 "")
"4"
> (alist-refnum a 1 0)
2
> (set! a (alist-set a 1 "replaced" 5 'new))
> (alist-ref a 1)
"replaced"
> (set! a (alist-delkeys a 1 3))
> (alist-ref a 1)
#f