[Israel.pm] reference to tied variables

Moshe Kaminsky kaminsky at math.huji.ac.il
Thu Jul 15 12:50:54 PDT 2004


Please consider the following code segment:

    tie my $Foo, Momo;
    $Bar = \$Foo;
$$Bar = 4;
print $$Bar, "\n";

Surprisingly, this actually works (ie, whatever magic Momo introduces 
applies in the assignment and printing). My question is first whether it 
is intentional, and if so, how do I untie whatever is tied now, and when 
the controlling object gets destroyed.

The reason I ask is that I managed to apply this nicely by combining it 
with overloading, and all works fine until I get to the destruction of 
the controlling object, where I see very weird things that I can only 
describe as a bug.


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                                        -- Douglas Adams
    Moshe Kaminsky <kaminsky at math.huji.ac.il>
    Home: 08-9456841
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