Concise way of writing multi clause - single body functions?

[Sebb]

@dimitarvp

you can use macros to code-generate one function per event.

see this thread: Can a macro generate functions iteratively from list of atoms?

@lguminski

I did not know that the “in” operator exists.

Note, that it does not just exist, but is also allowed in guards (as long as the right-hand side is a list or a range).