enumerated_constants.rb in enumerated_constants-0.3.0

- old
+ new

@@ -1,7 +1,9 @@
 require 'forwardable'
 
+# Mix-in that allows you to treat a module of related constants like
+# a good ol' fashioned enum.
 module EnumeratedConstants
   extend Forwardable
 
   def all
     @all ||= constants.map(&method(:const_get)).delete_if do |constant|
@@ -13,15 +15,15 @@
 
   # Return all but the constant name you pass
   # @param name [Symbol,String] The name of the constant you don't want
   # @return [Array] @all except the value of that constant
   def except(*names)
-    const_names =
     names = names.map(&:upcase).map(&:to_sym)
     values = names.map do |name|
       begin
         const_get(name)
       rescue NameError
+        raise ArgumentError, "Constant #{name} does not exist"
       end
     end.compact
     all - values
   end
 end