bit of a detour, but being able to do things like this is a big part of what lisp programmers are getting at when they bring up the advantages of 'syntax as dat

bit of a detour, but being able to do things like this is a big part of what lisp programmers are getting at when they bring up the advantages of 'syntax as data' - being able to perform complete high-level runtime program introspection, transformation, and code generation - good to see these kinds of techniques are available in other good languages that might appeal to the less parenthetically-inclined, not that that is the only benefit of julia