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    TCollection.ForEach

    Execute procedure for each item in the list.

    Declaration

    Source position: objects.pp line 466

    procedure TCollection.ForEach(Action: TCallbackProcParam);

    Description

    ForEach calls Action for each element in the collection, and passes the element as an argument to Action.

    Action is a procedural type variable that accepts a pointer as an argument.

    Errors

    None.

    See also

    Name Description
    TCollection.FirstThat Return first item which matches a test.
    TCollection.LastThat Return last item which matches a test.

    Example

    Program ex21;

{ Program to demonstrate the TCollection.Foreach method }

Uses Objects,MyObject; { For TMyObject definition and registration }

Var C : PCollection;
    M : PMyObject;
    I : Longint;

Procedure PrintField (Dummy: Pointer;P : PMyObject);

begin
  Writeln ('Field : ',P^.GetField);
end;

begin
  C:=New(PCollection,Init(100,10));
  For I:=1 to 100 do
    begin
    M:=New(PMyObject,Init);
    M^.SetField(100-I);
    C^.Insert(M);
    end;
  Writeln ('Inserted ',C^.Count,' objects');
  C^.ForEach(@PrintField);
  C^.FreeAll;
  Dispose(C,Done);
end.