>> Where have you ever had to use the modulo operator in your programming career, especially on the web side of things? Make every nth thing shaded a different

>> Where have you ever had to use the modulo operator in your programming career, especially on the web side of things? Make every nth thing shaded a different color? Make sure a list of things has a useful amount of elements for a given task? When I was teaching myself how to program I'm pretty sure I made some terrible pseudo implementation of modulo before I found out it was a thing because that's a naturally occurring need.