On Wed, 1 Nov 2000, Matt Sergeant wrote:
> Definitely use exceptions. I prefer Error.pm for this (sorry, Dave!),
> which allows your handler to simply be:
>
> sub handler {
> return try {
> ...
> } catch Exception::RetCode with {
> my $E = shift;
> return $E->{code};
> } <other exceptions>
> ;
> }
Be very careful with nested try/catch blocks. Error.pm uses prototypes to
make these into anonymous subs, which is usually fine, but this leaks
memory like mad:
my $foo;
try {
something();
try {
$foo++;
};
} otherwise {
handle_error();
};
It's not Graham Barr's fault; that's just a byproduct of Perl's support
for closures (I think).
- Perrin
