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You're viewing version 1.2.0 of ==. The latest stable version of Clojure Core is 1.3.0.

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1.2.0

1.2.0
1.3.0

==

clojure.core

(== x)
(== x y)
(== x y & more)

Returns non-nil if nums all have the same value, otherwise false

1 Example top

link | changes
```
;; true:
(== 1)
(== 1 1)       
(== 1/1, 2/2, 3/3, 4/4)   
(== 1, 1.0, 1/1)
(== :foo)


;; false:
(== 1 2)
(== 1 \1)
(== 1 "1")
```
;; true: (== 1) (== 1 1) (== 1/1, 2/2, 3/3, 4/4) (== 1, 1.0, 1/1) (== :foo) ;; false: (== 1 2) (== 1 \1) (== 1 "1")

Source clojure/core.clj:898 top

(defn ==
  "Returns non-nil if nums all have the same value, otherwise false"
  {:inline (fn [x y] `(. clojure.lang.Numbers (equiv ~x ~y)))
   :inline-arities #{2}
   :added "1.0"}
  ([x] true)
  ([x y] (. clojure.lang.Numbers (equiv x y)))
  ([x y & more]
   (if (== x y)
     (if (next more)
       (recur y (first more) (next more))
       (== y (first more)))
     false)))

Vars in clojure.core/==: defn first next

Used in 1 other vars deferror

Comments top

1 comment(s) for ==.

gstamp

link

There is a difference between "=" and "==". For primitives you definitely want to use "==" as "=" will result in a cast to the wrapped types for it's arguments.

This may not be the case come Clojure 1.3 (see [1])

[1] http://github.com/clojure/clojure/commit/df8c65a286e90e93972bb69392bc106128427dde

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