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program tforin24;
{$mode objfpc}
{$apptype console}
uses classes;
Type
TDayObject = Class
DayOfWeek : Integer;
Constructor Create(ADayOfWeek : Integer);
end;
TObjectEnumerator = Class
FList : TStrings;
FIndex : Integer;
Function GetCurrent : TDayObject;
Function MoveNext: boolean;
Property Current : TDayObject Read GetCurrent;
end;
Constructor TDayObject.Create(ADayOfWeek : Integer);
begin
DayOfWeek:=ADayOfWeek;
end;
Function TObjectEnumerator.GetCurrent : TDayObject;
begin
Result:=FList.Objects[Findex] as TDayObject;
end;
Function TObjectEnumerator.MoveNext: boolean;
begin
Inc(FIndex);
Result:=(FIndex<FList.Count);
end;
operator enumerator (s : TStrings) : TObjectEnumerator;
begin
Result:=TObjectEnumerator.Create;
Result.Flist:=S;
Result.FIndex:=-1;
end;
Var
Days : TStrings;
D : String;
O : TdayObject;
begin
Days:=TStringList.Create;
try
Days.AddObject('Monday',TDayObject.Create(1));
Days.AddObject('Tuesday',TDayObject.Create(2));
Days.AddObject('Wednesday',TDayObject.Create(3));
Days.AddObject('Thursday',TDayObject.Create(4));
Days.AddObject('Friday',TDayObject.Create(5));
Days.AddObject('Saturday',TDayObject.Create(6));
Days.AddObject('Sunday',TDayObject.Create(7));
For O in Days do
Writeln(O.DayOfWeek);
For D in Days do
Writeln(D);
Finally
Days.Free;
end;
end.
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