I don't like the way you have to declare a checked variable: 
$intfactory->Monitor(\ my $var) = 42;

[download]

Yes that's ugly. You can at least get rid of the backslash. $_[1] paseed to the method is an alias to $var so \$_[1] is \$var.

Note also that the value of a scalar assignment is itself an lvalue. 

sub Monitor : lvalue {
    my CheckFactory $self = shift;
    my $rvar = \shift;
    my $lvar = $$rvar;
    tie $$rvar, 'Checkee', $self->{Closure};
    $$rvar = $lvar;
    $$rvar;
}

$intfactory->Monitor(my $var = 42);

[download]

If you want more syntactic sugar then take a look at attributes.

In reply to Re: Returning a tied scalar by nobull
in thread Returning a tied scalar by MarkusLaker

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