georgebrock · February 5, 2010 17:10
diff --git a/gistfile1.rb b/gistfile1.rb
 class Hash
  def hash_map()
    self.inject({}) do |hash, (k, v)|
      hash.merge(k => yield(k, v))
    end
  end
 end

 {:a => 1, :b => 2}.hash_map {|k,v| v**2 } # => {:a => 1, :b => 4}
	class Hash
	def hash_map()
	self.inject({}) do \|hash, (k, v)\|
	hash.merge(k => yield(k, v))
	end
	end
	end

	{:a => 1, :b => 2}.hash_map {\|k,v\| v**2 } # => {:a => 1, :b => 4}