[fpc-pascal] Re: Fpc Access Violation if AppConfigDir doesn't exist.

Sven Barth pascaldragon at googlemail.com
Wed Feb 13 11:57:03 CET 2013

On 13.02.2013 09:58, Mark Morgan Lloyd wrote:
> Michael Müller wrote:
>> I'm not sure if somebody else mentioned this already but I have the
>> feeling that Giuliano thinks that he has to decide to use try-finally
>> OR try-except but there are situations where you need both. One of the
>> criteria is if the object is local or global since for a global object
>> it is likely that you place the .Free (or for a global object better
>> FreeAndNil()) into a destructor or finalization section (which means
>> that you have to stop the program in case of an error and not continue
>> showing just a dialog) so you'll need only the try-except if you want
>> to catch the exception. In case of a local object you'll ALWAYS have
>> the lines
>> Obj := Class.Create;
>> try
>>   try
>>     // do some code
>>   finally
>>     Obj.Free;
>>   end;
>> except
>>   writeln('We have a problem);
>>   halt the program or reraise the exception or raise a new one
>> end;
> I tried to make that point but I'm not sure the message reached its mark.
> It's possibly unfortunate that Borland chose to use "try" for both
> constructs, rather than having distinct try-except-end and
> start-finally-end forms.

Other languages did the same, so I don't see the problem here...


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