Hi, I'm having some trouble and would appreciate some advice.

I have a couple of scripts that reference the same perl module.
In some of the scripts I want to pass a dispatch table to the module and in others I do not, where I do, I pass:
my %modifier = ( reverse_modifier => \&reverse_modifier );
my $return = my::module::exit_routine(\%modifier);

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Where I don't I WANT to pass:
my $return = my::module::exit_routine();

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In the module exit_routine dereferences %modifier like this:
my %revmod = %{$_[0]};

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The scripts that do not pass %modifier result in:
Can't use an undefined value as a HASH reference at /usr/local/lib/perl5/site_perl/5.10.1/...

Whilst those that do pass %modifier work as expected.

My question is - How can I make this work for both scenarios? Preferably I would like to modify the module so that it can deal with the 2 scenarios and save me from modifying all of the scripts that use it.

Many thanks for your time and patience.

Regards,
Darren

In reply to Dereferencing %hash that does not exist. by perldarren

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