[Lazarus] Break in 'case...of' block.

[Michael Van Canneyt]

On Sun, 22 Aug 2010, Dave Coventry wrote:

> I have a function that tests for a series of different conditions
> according to a value in a 'case...of' block.
>
> Result:=false;
> mylist:=TStringlist.Create;
> case i of
>  1:
>   begin
>      if condition1 then
>      begin
>         Result:=true;
>         break;
>      end;
>      if condition2 then
>      begin
>         Result:=true;
>         break;
>      end;
>      if condition3 then
>      begin
>         Result:=true;
>      end;
>   end;
>   2:....;
>   3:....;
> end;
> mylist.free;
>
> The above does not work as the 'case...of' is not considered to be a loop.
> Error: BREAK not allowed.
>
> I could just exit the function, using 'exit' instead of 'break' but I
> think I need to free the mylist TStrings.
>
> Is there a way of doing this or is my best way just to replace 'break'
> with 'mylist.free' and 'exit'?

If you use a try/finally block (and you always should when allocating resources) 
then an exit will go through the finally block. So you can simply use exit.

mylist:=TStringlist.Create;
try
   Case i of
     // Use exit
   end;
finally
   MyList.Free;
end;