SteveG schrieb:
Is there a simple way to tell if slTest has been assigned in the following ?

(without specifically assigning it to NIL in the declaration)

var
  slTest     :TStringList;

begin
  if Assigned(slTest) then FreeAndNil(slTest); // gives exception
end;

When slTest is a local variable, you should initialize it to Nil. Otherwise the variable contains garbage, that most probably is *not* Nil, so that FreeAndNil tries to free something that never has been created.

DoDi


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