run!

added
1.7

ns
clojure.core

type
function

(run! proc coll)

Runs the supplied procedure (via reduce), for purposes of side
effects, on successive items in the collection. Returns nil

                (run! prn (range 5))
; 0
; 1
; 2
; 3
; 4
; returns nil

; compared to mapv
(mapv prn (range 5))
; 0                                                                                                                                                                                                                                  
; 1                                                                                                                                                                                                                                  
; 2                                                                                                                                                                                                                                  
; 3                                                                                                                                                                                                                                  
; 4                                                                                                                                                                                                                                  
; returns [nil nil nil nil nil]