Section 2. Application of chapter

This chapter shall apply to all counties,
  except that:
    (a)  It  shall  not  apply to a county wholly contained within a city,
  unless specifically so provided;
    (b) The provisions of this chapter in so far as they are  in  conflict
  with  or  in limitation of a provision of any alternative form of county
  government heretofore or hereafter  adopted  by  a  county  pursuant  to
  section  two  of article nine of the constitution, or any administrative
  code, county government law  or  civil  divisions  act  enacted  by  the
  legislature  and  applicable to such county as now in force or hereafter
  amended, or in conflict with  any  local  law  heretofore  or  hereafter
  adopted  by  a  county  under  an optional or alternative form of county
  government, shall not be applicable to the  county,  unless  a  contrary
  intent is expressly stated in this chapter.