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doc source examples comments

1.3.0

get

clojure.core

(get map key)
(get map key not-found)

Returns the value mapped to key, not-found or nil if key not present.

3 Examples top

link | changes
```
user=> (get [1 2 3] 1)
2
user=> (get [1 2 3] 5)
nil
user=> (get {:a 1 :b 2} :b)
2
user=> (get {:a 1 :b 2} :z "missing")
"missing"
```
user=> (get [1 2 3] 1) 2 user=> (get [1 2 3] 5) nil user=> (get {:a 1 :b 2} :b) 2 user=> (get {:a 1 :b 2} :z "missing") "missing"
link | changes
```
;; to get an index of the element of a vector, use .indexOf
user=> (def v ["one" "two" "three" "two"])
#'user/v

user=> (.indexOf v "two")
1

user=> (.indexOf v "foo")
-1
```
;; to get an index of the element of a vector, use .indexOf user=> (def v ["one" "two" "three" "two"]) #'user/v user=> (.indexOf v "two") 1 user=> (.indexOf v "foo") -1
link | changes
```
user=> (get (System/getenv) "SHELL")
"/bin/bash"

user=> (get (System/getenv) "PATH")
"/usr/local/bin:/sbin:/usr/sbin:/usr/bin:/bin"
```
user=> (get (System/getenv) "SHELL") "/bin/bash" user=> (get (System/getenv) "PATH") "/usr/local/bin:/sbin:/usr/sbin:/usr/bin:/bin"

Source clojure/core.clj:1387 top

(defn get
  "Returns the value mapped to key, not-found or nil if key not present."
  {:inline (fn  [m k & nf] `(. clojure.lang.RT (get ~m ~k ~@nf)))
   :inline-arities #{2 3}
   :added "1.0"}
  ([map key]
   (. clojure.lang.RT (get map key)))
  ([map key not-found]
   (. clojure.lang.RT (get map key not-found))))

Vars in clojure.core/get:

Used in 0 other vars

ClojureDocs(beta)

Clojure Core

Namespaces

get

clojure.core

3 Examples top

See Also top

Source clojure/core.clj:1387 top

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