The other day, Lukas Ruebbelke wrote an excellent blog post on AngularJS filters, including some very clever ways in which to use them to output nested lists. Admittedly, I haven't looking into filters very much. When I first saw them, I found the syntax confusing; and so, I never really pursued them. But, Lukas' post was quite compelling, so I figured filters were worth looking into. And, the first thing that I wanted to see was, how often do filters actually execute in AngularJS?