Ross
> I see, it is C.
> I have managed to get it to work! if I make it a static array rather than
dynamic (as
> in the C example).
> eg. categories : array[0..500] of TStringList
> I would rather have it dynamic because the number of elements is unknown.
Is there
> no easy way around it?
I was about to send this when I saw your post. Yes the problem
in your earlier example was that the array wasn't allocated.
here's an example of 2 ways to do it - Categories is a "statically allocated
array" and MyStrings is "dynamically allocated"
var
Categories : array[0..9] of TStringList;
MyStrings: Tlist;
i:integer;
begin
MyStrings:= TList.Create;
for i := 0 to 9
do begin
Categories[i] := TStringList.Create;
MyStrings.Add(TStringlist.Create);
end;
end;
You can access the MyStrings collection like an array
(i.e. MyStrings[k] is the kth TStringList) but as I
have it written you will need to typecast the result
because the generic TList is a container for TObjects.
So actually you would need TStringList(MyStrings[k]).
For industrial use, I'd suggest deriving your own
class from TList - so that the Add() function
takes only TStringlists) and the [] operation returns
a TStringlist instead of a TObject.
Hope this is useful
-ns
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