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require 'active_support/hash_with_indifferent_access'
class Hash
# Returns an +ActiveSupport::HashWithIndifferentAccess+ out of its receiver:
#
# {:a => 1}.with_indifferent_access["a"] # => 1
#
def with_indifferent_access
ActiveSupport::HashWithIndifferentAccess.new_from_hash_copying_default(self)
end
# Called when object is nested under an object that receives
# #with_indifferent_access. This method with be called on the current object
# by the enclosing object and is aliased to #with_indifferent_access by
# default. Subclasses of Hash may overwrite this method to return +self+ if
# converting to an +ActiveSupport::HashWithIndifferentAccess+ would not be
# desirable.
#
# b = {:b => 1}
# {:a => b}.with_indifferent_access["a"] # calls b.nested_under_indifferent_access
#
alias nested_under_indifferent_access with_indifferent_access
end
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