Recursive Hash#sort and Array#to_hash

Ruby standard Hash#sort method does not sort recursively an hash.
Here is a method that do the job.
It recursively sort the hash using Array#sort and return the sorted array.

 class Hash
   
    # Return array from hash recursively sorted
    def to_sorted_array block=nil
      sort(&block).inject([]) do |array, (key, value)|
        value = value.is_a?(Hash) ? value.to_sorted_array : value
        array << [key, value]
      end
    end
    
  end

hash={'user' => {'adress' => {'town' => 'Paris', 'street' => "rue de Quimper"}, 'name' => 'toto', 'age' => 12}}
hash.to_sorted_array # =>
[["user", [["adress", [["street", "rue de Quimper"], ["town", "Paris"]]], ["age", 12], ["name", "toto"]]]]

The Array#to_hash ruby standard method do not transform an array into an hash equivalent, recursively.
Here is a method which do the job:

class Array
  # Recursively convert array to hash 
  def to_hash 
    inject({}) do |hash, (key, value)|
      value = value.to_hash if value.kind_of?(Array)
      hash.merge!({key => value})
    end
  end
    
end

  array = [["user", [["adress", [["street", "rue de Quimper"], ["town", "Paris"]]], ["age", 12], ["name", "toto"]]]]
  array.to_hash
  
  {"user"=>  {"name"=>"toto", "adress"=>{"street"=>"rue de Quimper", "town"=>"Paris"}, "age"=>12}}

I' ve put these extensions into a library on github : ruby_extensions

To install the gem :

gem install ruby_extend