rand-int - Clojure Standard Library

For a quick intro to this series of blog posts check out Clojure Standard Library - Intro. It includes a lot of useful info, including notes about presentation of examples and more.

This posts function:

rand-int

Quick Overview

Description

clojure.core/rand-int returns a random integer between 0 and n (exclusive).

Example

(rand-int 10)
; => 2
(rand-int 30)
; => 26

How To Use

Parameters and Return Values

rand-int is a 1-arity function – it accepts only one parameter that has no default value (it is mandatory).

(rand-int n) - n is the max value (exclusive) and can be any number (e.g. integer, ratio, float).

Ex:

(rand-int 5000)
; => 3648
(rand-int 10.5)
; => 6
(rand-int 10/3)
; => 2
(rand-int 100/3)
; => 30