mirror of
https://github.com/janet-lang/janet
synced 2024-11-16 21:54:48 +00:00
13 lines
307 B
Plaintext
13 lines
307 B
Plaintext
# Get the number of occurences of elements in a set
|
|
|
|
(import "examples/iterators.dst")
|
|
|
|
(defn frequencies
|
|
"Get the number of occurences of each value in a sequence."
|
|
[s]
|
|
(let [freqs @{}
|
|
_ (foreach s (fn [x]
|
|
(let [n (get freqs x)]
|
|
(put freqs x (if n (+ 1 n) 1)))))]
|
|
freqs))
|