Untitled

@types.each do |type|
      type.sessions.each do |session|
        unscheduled_sessions += session.delete_if {|s| !s.session_dates.nil? }
        scheduled_sessions += session.delete_if { |s| s.session_dates.nil? }
      end
      scheduled_sessions.sort! { |a,b|
          a.session_dates.first.date <=> b.session_dates.first.date }
      type.sessions = scheduled_sessions + unscheduled_sessions
    end