I'm working on learning Ruby, and came across inject. I am on the cusp of understanding it, but when I'm the type of person who needs real world examples to learn something. The most common examples I come across are people using inject to add up the sum of a (1..10) range, which I could care less about. It's an arbitrary example.
What would I use it for in a real program? I'm learning so I can move on to Rails, but I don't have to have a web-centric example. I just need something that has a purpose I can wrap my head around.
Thanks all.