Ruby: Iterating through Constants

Question

I'm just starting to use constants in Ruby.

I have

module Constants C1 = "foo" C2 = "bar" end

I would like to do

Constants.each do |c| #do something with each one end

but it says

undefined method ‘each’ for Constants::module

....

Is there a nice way of iterating through a list of constants?

A useful link for this question: stackoverflow.com/questions/2309255/…. — Ray Toal
– Ray Toal, Commented Jul 15, 2011 at 20:15

fl00r · Accepted Answer · 2011-07-15 21:39:33Z

39

module Constants C1 = "foo" C2 = "bar" end Constants.constants.each do |c| puts "#{c}: #{Constants.const_get(c)}" end #=> "C1: foo" #=> "C2: bar"

answered Jul 15, 2011 at 20:12

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