note: I do not do any robot programming so I assume "your code" here means just any code at all.
Things begin looking even more usefull with things like this:
I didn't really use this operator much until I had to learn scheme for school once. Afterwards I was really annoyed that some things are much easier to do in functional programming but are harder in languages like C. As suggested by rbayer, this operator gives one a slight taste of a functional programming in some cases.