Also, that doesn't work.

#! perl -l
use strict;
use warnings;

sub test{
    our $test{localsub} = sub{
        print 'localsub1';
        return 12345;
    } unless exists $test{localsub};

    $test{localsub}->();
}

print test;
__END__
P:\test>junk
syntax error at P:\test\junk.pl line 6, near "$test{localsub"
Execution of P:\test\junk.pl aborted due to compilation errors.
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It would have to become:

#! perl -l
use strict;
use warnings;

sub test{
    our %test;
    $test{localsub} = sub{
        print 'localsub1';
        return 12345;
    } unless exists $test{localsub};

    $test{localsub}->();
}

print test;
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