# File lib/rufus/json.rb, line 191
  def self.backend=(b)

    b =
      {
        'yajl' => YAJL, 'yajl-ruby' => YAJL,
        'json' => JSON, 'json-pure' => JSON,
        'active' => ACTIVE, 'active-support' => ACTIVE,
        'oj' => OJ, 'jrjackson' => JRJACKSON, 'none' => NONE
      }[b.to_s.gsub(/[_\/]/, '-')] if b.is_a?(String) or b.is_a?(Symbol)

    @backend = b
  end