clojure.core/hash-set

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Type: function Added: Clojure 1.0 Examples: 2 Runnable: 2

([] [& keys])

Returns a new hash set with supplied keys. Any equal keys are handled as if by repeated uses of conj.

Examples

by zmila on 2010-07-30 ▶

;; Any duplicates are squashed (no error) (hash-set 1 2 1 3 1 4 1 5) ;;=> #{1 4 3 2 5} ;; There is an equivalent reader macro '#{...}' (= (hash-set :c :a :b) #{:b :a :c}) ;;=> true ;; A string can be treated as a sequence to produce ;; a set of the characters found in the string. (apply hash-set (seq "Lorem ipsum dolor sit amet")) ;;=> #{\space \a \d \e \i \L \l \m \o \p \r \s \t \u} ;; or simply (see "set") (set "Lorem ipsum dolor sit amet") ;;=> #{\space \a \d \e \i \L \l \m \o \p \r \s \t \u}

by jlb0170 on 2022-02-04 ▶

;; The "equivalent" reader macro throws an error when receiving duplicates, however: #{ 1 2 1 } ;;=> Duplicate key: 1

See also

• clojure.core/sorted-set (3)
• clojure.core/set (1)

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