I agree with you.
According to your idea, users don't need to pass a reference subroutines on every call:
# procedural interface
my $value = Blosxom::Header->get($key);
my $bool = Blosxom::Header->exists($key);
Blosxom::Header->set($key => $value);
# OO interface
my $h = Blosxom::Header->new();
my $value = $h->get($key);
my $bool = $h->exists($key);
$h->set($key => $value);
Nobody uses my module except for me :)
But I belive this module should exist.
I noticed that it's not necessary to implement OO interface any more in this case.
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