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module HashExtensions
def symbolize_keys
inject({}) do |acc, (k,v)|
key = String === k ? k.to_sym : k
value = Hash === v ? v.symbolize_keys : v
acc[key] = value
acc
end
end
end
Hash.send(:include, HashExtensions)
hash = {"drinks"=>{"gibson"=>{"garnish"=>"onion"}, "martini"=>{"garnish"=>"olive"}}}
puts hash.symbolize_keys.inspect
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