Public Static Final for Ruby
When I first got into Ruby awhile back I found that I wanted to do something like I used to in Java: public static final String BLUE = “blue”; But darned if I could get the internet to tell me how, so here I am giving back to the community: in solar_constants.rb: module SolarConstants MASS_OF_EARTH = 5.98e24 end in some other file: require 'solar_constants' puts SolarConstants::MASS_OF_EARTH or you can: require 'solar_constants' class Gravity include SolarConstants def print_mass_of_earth puts MASS_OF_EARTH end end This being Ruby you can, of course, redefine a constant. But you will get a stern warning.