anchor.diff:      ?LET({S,G},{eqc_gen:choose($a,$z), stringGen(N-1)}, [S|G]).
   
   
  +-spec randInt(integer(),integer()) -> eqc_gen:gen(integer()).
   randInt (Min,Max) ->
   
       case {Min,Max} of 
  
positive.code: boolean() ->
      eqc_gen:bool().
  
  
  null() ->
      null.
  
  
negative.code:             eqc_gen:choose(Min,Max)
      end.
  
  -spec randIntPositive(integer(), integer()) -> eqc_gen:gen(integer()).
  randIntPositive(Min,Max) when (Min > 0) and (Max > 0) ->
         case {Min,Max} of 
              
  