Naming conventions in Ruby

gistfile1.rb

ClassNamesAreLikeThis
ModuleNamesAreLinkThis
def method_names_are_like_this
local_variable_names_are_like_this
@instance_variable_names_are_like_this
CONTSTANT_NAMES_ARE_LIKE_THIS

module Things
  class UserThing
    
    MAX_NAME_LENGTH = 100 # MAX_NAME_LENGTH is a constant, it doesn't change
    
    def initialize name, address # name and address are arguments
      @name = name # @name is an instance variable (it belongs to an instance of a class, see user variable below)
      @address = address
    end
    
    # this is the code that creates the 'suburb' method
    def suburb
      parts = @address.split(",") # part is a local variable
      parts.last
    end
    
  end
end

# This is how to make a new instance of UserThing - user is a local variable
user = Things::UserThing.new "Fred", "123 Short St, Melbourne")
puts user.suburb # This is how you use the 'suburb' method
puts Things::UserThing::MAX_NAME_LENGTH # This is how you use a constant