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1.3.0 permalink

1.2.0
1.3.0

identity

clojure.core

(identity x)

Returns its argument.

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

6 Examples top

link | changes
```
user=> (identity 4)
4
```
user=> (identity 4) 4
link | changes
```
user=> (filter identity [1 2 3 nil 4 false true 1234])
(1 2 3 4 true 1234)
```
user=> (filter identity [1 2 3 nil 4 false true 1234]) (1 2 3 4 true 1234)
link | changes
```
user=> (map #(%1 %2) (cycle [inc identity]) [1 2 3 4 5 6 7 8 9 10])
(2 2 4 4 6 6 8 8 10 10)
```
user=> (map #(%1 %2) (cycle [inc identity]) [1 2 3 4 5 6 7 8 9 10]) (2 2 4 4 6 6 8 8 10 10)
link | changes
```
user=> (partition-by identity (sort "abcdaabccc"))
((\a \a \a) (\b \b) (\c \c \c \c) (\d))
```
user=> (partition-by identity (sort "abcdaabccc")) ((\a \a \a) (\b \b) (\c \c \c \c) (\d))
link | changes
```
user=> (map first (partition-by identity [1 1 2 3 3 1 1 5 5]))
(1 2 3 1 5)
```
user=> (map first (partition-by identity [1 1 2 3 3 1 1 5 5])) (1 2 3 1 5)
link | changes
```
user=> (group-by identity "abracadabra")
{\a [\a \a \a \a \a], \b [\b \b], \r [\r \r], \c [\c], \d [\d]}
```
user=> (group-by identity "abracadabra") {\a [\a \a \a \a \a], \b [\b \b], \r [\r \r], \c [\c], \d [\d]}

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See Also top

0
clojure.core/nil?
Returns true if x is nil, false otherwise.

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Source clojure/core.clj:1350 top

(defn identity
  "Returns its argument."
  {:added "1.0"
   :static true}
  [x] x)

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

Vars in clojure.core/identity:

Used in 0 other vars

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