In Ruby on Rails development, I have been known to use symbol to proc. Recently, I needed to re-use a method as a block. Here’s a contrived example of what I was doing: Group.all.sort {|a,b| a.name <=> b.name} However, I wanted to re-use this sort and ended-up refactoring it to: def group_sort(a, b) a.name <=> b.name end Group.all.sort {|a,b| group_sort(a, b)} Although this allowed me to re-use my