idlefingers · January 5, 2014 17:38
diff --git a/gistfile1.rb b/gistfile1.rb
 class Hash
  def has_nested_keys?(*args)
    args.inject(self) do |hash,key|
      hash.fetch key, nil
    end
  end
 end

 hash = {a: {b: {c: 1}}}
 hash.has_nested_keys? :a, :b, :c # => true
	class Hash
	def has_nested_keys?(*args)
	args.inject(self) do \|hash,key\|
	hash.fetch key, nil
	end
	end
	end

	hash = {a: {b: {c: 1}}}
	hash.has_nested_keys? :a, :b, :c # => true