Ruby newbie: undefined method `with_indifferent_access'

Question

I am a new Ruby programmer, and a co-worker of mine to help me get started wrote the following code which ran fine in his environment. However, when I try to run it in my own e

Answer 1

Try using:

require 'active_support/core_ext/hash'

Thats what actually adds the with_indifferent_access method to the normal Hash class.

Answer 2

By the way, HashWithIndifferentAccess is really powerful as long as you use it with caution.

For example:

h = HashWithIndifferentAccess.new()
some_array.each do |a|
  h["#{a}"] = "anything you want"
end

I use it all the time when working with slices of data in metrics.