I don't have your blanket aversion to the use of globals -- they are just another tool in the toolbox, applicable for some purposes and not others -- but if I did, I'd deal with it this way: 

sub buildFileHash {
    my $root = shift;
    my %filesBySize;
    find {
        ...
        push @{ $filesBySize{ -s() } } }, $File::Find::name;
        ...
    } $root;
    \%fileBySize;
}

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In reply to Re: Question about alternative to File::Find by BrowserUk
in thread Question about alternative to File::Find by swampyankee

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