How do I create a hash in Ruby that compares strings, ignoring case?

Question

In Ruby, I want to store some stuff in a Hash, but I don\'t want it to be case-sensitive. So for example:

h = Hash.new
h[\"HELLO\"] = 7
puts h[\"hello\"]
         


        

Answer 1

require 'test/unit'
class TestCaseIndifferentHash < Test::Unit::TestCase
  def test_that_the_hash_matches_keys_case_indifferent
    def (hsh = {}).[](key) super(key.upcase) end

    hsh['HELLO'] = 7
    assert_equal 7, hsh['hello']
  end
end