from = 2050 # start port
to = 2075 # end port
range = from..to

# map range into a list of tuples {Blip.UDPServer, [port]}
servers = Enum.map(range, &{Blip.UDPServer, [&1]})

# start a supervisor with dynamicaly generated list
Supervisor.start_link(servers, strategy: :one_for_one)