I think we can go harder on the std lib :) HANDLERS.flat_map { _1.node_names.index_with(_1) }.inject(&:merge) (nb: assuming there exists a `.node_names` to

I think we can go harder on the std lib :) HANDLERS.flat_map { _1.node_names.index_with(_1) }.inject(&:merge) (nb: assuming there exists a `.node_names` to expose the constant... just because I like always using method calls)