difference between rest and next

(def x (next (random-ints 50)))

; realizing random number (evaluating first element)

; realizing random number (evaluating second element, which is the head of the tail)

(def x (rest (random-ints 50)))

; realizing random number

NOTE: ‘next’ tries to evaluate the head of the tail, while ‘rest’ does not, which is lazier than ‘next’