Hello Ea,

Using hash slices is a clever strategy here!, and the Modern Perl link is a useful one. I must admit, I’m still trying to get my head around the @{ ... }{ ... } syntax, which is perfectly correct, but looks wrong (to me).

But this:

$params{max_record_length} 
    = $hash{max_record_length} 
        || $params{max_record_length};
[download]

makes it impossible to override $params{max_record_length} with a zero value. Easily fixed:

$params{max_record_length} 
    = $hash{max_record_length} 
        // $params{max_record_length};
[download]

See perlop#Logical-Defined-Or.

Cheers,