[fpc-pascal] methods of an object to create others objects

[Marcos Douglas]

On Wed, Jul 7, 2010 at 11:35 AM, José Mejuto <joshyfun at gmail.com> wrote:
> Hello FPC-Pascal,
>
> Wednesday, July 7, 2010, 3:48:13 PM, you wrote:
>
> AB> Martin, I didn't get to the end of your email because I find that
> AB> first major part - part and parcel of why Delphi failed as a language.
> AB>  It became unviable because exception handling and blow-outs. Which
> AB> in turn were caused by sloppy ideologies such as the standing notion
> AB> here... Which is to let the blow-out occur and move on.  Garbage
> AB> collection was the solution to this problem.
>
> It's impossible to write a dogma about exceptions, some must be
> handled, some could or could not be handled. Expected exceptions like
> a conversion string to number should be handled and processed in that
> way to recover from them (they are recoverable).
>
> If an exception is recoverable (program state can be passed from
> unestable to stable again) it should be handled and processed. If the
> handling does not garantee the stability the best option is to save
> the information that can be safelly stored or processed and terminate
> the process as soon as possible. It's not a matter of ideology, is a
> matter of stability. Unexpected exceptions should terminate the
> program as soon as possible with trying to save as much as possible.
> Even in some processes an unexpected exception should revert the
> program to the previous stable state (if possible) and discard all
> information in memory to avoid the possibility of corrupted
> information.

Exactly.

I just wonder how you do in web apps that are not CGI. As I said
earlier in an email here:
http://lists.freepascal.org/lists/fpc-pascal/2010-July/025902.html

...but I guess that is to be reviewed, perhaps, in another thread. ;-)


MD.