[Lazarus] Testing Assigned object

Sven Barth pascaldragon at googlemail.com
Mon Apr 25 19:07:09 CEST 2011

On 25.04.2011 15:57, Marco van de Voort wrote:
> On Mon, Apr 25, 2011 at 10:15:57AM +0200, Hans-Peter Diettrich wrote:
>>> (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.
> Just to be clear
> Initialize it in code not in the declaration, since in the declaration afaik
> that makes it a static variable instead of a truely local one, even when declared
> with local scope.

You can only initialize a global variable. For "initialized local 
variables" you need to use writable "constants" ;)


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