- fxmapping-pop-min fxmapprocedure
- fxmapping-pop-max fxmapprocedure
Returns three values, k, v, and fxmap′, where (k, v) is the association of fxmap with the least/greatest key and fxmap′ is a fxmapping containing all of the associations of fxmap except for (k, v). It is an error if fxmap is empty.
(let-values (((k v fxmap) (fxmapping-pop-min (fxmapping 0 'a 1 'b 2 'c)))) (values k v (fxmapping->alist fxmap))) ⇒ (0 a ((1 . b) (2 . c)))