How to show web api put verb is idempotent

Feb 21 2017 3:48 AM

i searched google a lot still got no good explanation with example. mostly all write up is saying put is idempotent and post is not but i need a sample code which discuss or show idempotency of put method. so my request anyone can explain the put idempotency with example code or redirect me to right article link which discuss the same with example code. thanks