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1.3.0 permalink

1.2.0
1.3.0

seq

Returns a seq on the collection. If the collection is
empty, returns nil. (seq nil) returns nil. seq also works on
Strings, native Java arrays (of reference types) and any objects
that implement Iterable.

2 Examples top

link | changes
```
user=> (seq '())
nil

user=> (seq '(1))
(1)

user=> (seq "")
nil

user=> (seq "abc")
(\a \b \c)
```
user=> (seq '()) nil user=> (seq '(1)) (1) user=> (seq "") nil user=> (seq "abc") (\a \b \c)
link | changes
```
;(seq x) is the recommended idiom for testing if a collection is not empty
user=> (every? seq ["1" [1] '(1) {:1 1} #{1}])
true
```
;(seq x) is the recommended idiom for testing if a collection is not empty user=> (every? seq ["1" [1] '(1) {:1 1} #{1}]) true

Source clojure/core.clj:124 top

(def
 ^{:arglists '(^clojure.lang.ISeq [coll])
   :doc "Returns a seq on the collection. If the collection is
    empty, returns nil.  (seq nil) returns nil. seq also works on
    Strings, native Java arrays (of reference types) and any objects
    that implement Iterable."
   :tag clojure.lang.ISeq
   :added "1.0"
   :static true}
 seq (fn ^:static seq ^clojure.lang.ISeq [coll] (. clojure.lang.RT (seq coll))))

Vars in clojure.core/seq:

Used in 0 other vars

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Clojure Core

Namespaces

seq

clojure.core

2 Examples top

See Also top

Source clojure/core.clj:124 top

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