Ing. Branislav Gerzo wrote:
> Hi all,
>
> recently I've updated perl on FreeBSD machine to latest, but my
> modules go away, they are not in @INC. I have 2 questions:
> 1. is there possibility update perl, without modules going away?
> 2. I have some perl CGIs on server, now I have 500 internal server error
> because some modules are missing. Is there possibility, when some
> module is missing in perl script, I will call my own sub?
>
> Thanks
>
>
Part 2: Generally you can load a module wrapped in an eval and in the
case that it is not installed you will trap the exception and then you
could load your own code.
perldoc -f eval
perldoc -f require
For instance....
my $use_module = 1;
eval {
require CGI;
import CGI;
};
if ($@) {
warn "Module missing: $@";
warn "Falling back to my own code.";
$use_module = 0;
}
if ($use_module) {
# call module code....
print "Running module code....\n";
}
else {
# call your own code....
print "Running my own code....\n";
}
http://danconia.org
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