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1.3.0 permalink

1.2.0
1.3.0

rational?

clojure.core

(rational? n)

Returns true if n is a rational number

© Rich Hickey. All rights reserved. Eclipse Public License 1.0

1 Example top

link | changes
```
user=> (rational? 1)
true
user=> (rational? 1.0)
false
user=> (class 1.0)
java.lang.Double

;; Note that decimal? only returns true if n is a BigDecimal.
```
user=> (rational? 1) true user=> (rational? 1.0) false user=> (class 1.0) java.lang.Double ;; Note that decimal? only returns true if n is a BigDecimal.

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Source clojure/core.clj:3205 top

(defn rational? 
  "Returns true if n is a rational number"
  {:added "1.0"
   :static true}
  [n]
  (or (integer? n) (ratio? n) (decimal? n)))

© Rich Hickey. All rights reserved. Eclipse Public License 1.0

Vars in clojure.core/rational?:

Used in 0 other vars

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