;;
;; keyword with namespace
;;

(let [{:keys [app/title]} {:app/title "aabb"}] title)
;; => "aabb"

(let [{:keys [a.p.p/title]} {:a.p.p/title "aabb"}] title)
;; => "aabb"

(let [{:keys [a.p.p/title]} {:a.p.p/title "aabb"}] title)
;; => "aabb"

(let [{:keys [a.p.p/title]} {:title "aabb"}] title)
;; => nil

(let [{:keys [title]} {:a.p.p/title "aabb"}] title)
;; => nil