Not sure i like the lock-in you get with the anon sub approach. I would make the config hash have
both the sub references and the options references -- that way if you ever needed to override the options, it's
a bit cleaner
....
my $calls => {
A => { sub_ref => \&print_A, config_ref => { ... } },
B => { sub_ref => \&print_B, config_ref => { ... } }
};
my $test = 'A';
my $sub = $calls->{$test}{sub_ref};
my $config = $calls->{$test}{config_ref};
$sub->( $config );
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