Since filehandles are typeglobs, you can access its associated hash and stick stuff in it. For example, 

sub set_foo { 
    my $self = shift;
    my $val = shift;

    ${ *$self }{foo} = $val;
}

[download]

Update: I think you can also just say *$self->{foo} = $val; which is less ugly.

In reply to Re: Adding properties to a blessed file handle reference by friedo
in thread Adding properties to a blessed file handle reference by Anonymous Monk

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