(def first-str "A")
(def second-str "B")
(def third-str (str "A"))

(def are-equal-1 (= first-str second-str))
;; are-equal-1 is false

(def are-not-equal (not= first-str second-str))
;; are-not-equal is true

(def are-equal-2 (= first-str third-str))
;; are-equal-2 is true

;; compare gives a negative number, zero or a positive one
(def more-than (pos? (compare first-str second-str)))
;; more-than is false

(println "are-equal-1 is" are-equal-1)
(println "are-not-equal is" are-not-equal)
(println "are-equal-2 is" are-equal-2)
(println "more-than is" more-than)