Returns non-nil if nums all have the equivalent
value (type-independent), otherwise false
Source
clojure/core.clj:1035
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(defn ==
"Returns non-nil if nums all have the equivalent
value (type-independent), 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)))
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2 comment(s) for ==.
So what is difference with =?
'== is defined only for numbers, where '= is general equality. The example showing (== :foo) as true is a bit misleading because (== :foo :foo) produces an exception. Unary == always returns true as an optimization.