TCollection.Pack
Remove all >Nil pointers from the collection.
Declaration
Source position: objects.pp line 443
default
procedure Pack;
Description
Pack removes all Nil pointers from the collection, and adjusts Count to reflect this change. No memory is freed as a result of this call. In order to free any memory, you can call SetLimit with an argument of Count after a call to Pack.
Errors
None.
See also
| Name | Description |
|---|---|
| TCollection.SetLimit | Set maximum number of elements in the collection. |
Example
Program ex21;
{ Program to demonstrate the TCollection.FirstThat method }
Uses Objects,MyObject; { For TMyObject definition and registration }
Var C : PCollection;
M : PMyObject;
I : Longint;
Function CheckField (Dummy: Pointer;P : PMyObject) : Longint;
begin
If P^.GetField>56 then
Checkfield:=1
else
CheckField:=0;
end;
begin
C:=New(PCollection,Init(100,10));
For I:=1 to 100 do
begin
M:=New(PMyObject,Init);
M^.SetField(I);
C^.Insert(M);
end;
Writeln ('Inserted ',C^.Count,' objects');
Writeln ('first one for which Field>56 has index (should be 56) : ',
C^.IndexOf(C^.FirstThat(@CheckField)));
C^.FreeAll;
Dispose(C,Done);
end.