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TCollection.At function

Member of TCollectionIn unit Objects

Return the item at a certain index.

Declaration

pascal
function At(Index: Sw_Integer): Pointer

Description

At returns the item at position Index.

Errors

If Index is less than zero or larger than the number of items in the collection, seepl{Error}{TCollection.Error} is called with coIndexError and Index as arguments, resulting in a run-time error.

See also

Example: ex23

pascal
Program ex23;

{ Program to demonstrate the TCollection.At method }

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

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

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;
  For I:=0 to C^.Count-1 do
    begin
    M:=C^.At(I);
    Writeln ('Object ',i,' has field : ',M^.GetField);
    end;
  C^.FreeAll;
  Dispose(C,Done);
end.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.