store/[org.clojure/clojure "1.8.0"] clj::clojure.core/<

Official Documentation

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Arities
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   [x]
   [x y]
   [x y & more]

Docstring
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  Returns non-nil if nums are in monotonically increasing order,
  otherwise false.

Source

(defn <
  "Returns non-nil if nums are in monotonically increasing order,
  otherwise false."
  {:inline (fn [x y] `(. clojure.lang.Numbers (lt ~x ~y)))
   :inline-arities #{2}
   :added "1.0"}
  ([x] true)
  ([x y] (. clojure.lang.Numbers (lt x y)))
  ([x y & more]
   (if (< x y)
     (if (next more)
       (recur y (first more) (next more))
       (< y (first more)))
     false)))

Example 1

Edit
(< 1 2)
;; => true

(< 2 1)
;; => false

(< 1.5 2)
;; => true

(< 2 3 4 5 6)
;; => true

Uses on crossclj