And, amazingly... it completely works!
package Tie::ReverseScalar;
sub TIESCALAR {
my $class = shift;
return bless \$_[0] => $class;
}
sub FETCH {
return reverse ${$_[0]};
}
sub STORE {
${$_[0]} = reverse $_[1];
}
sub DESTROY {
undef ${$_[0]};
}
1;
and then:
use Tie::ReverseScalar;
sub Reverse :lvalue {
my $x = @_ ? \$_[0] : \$_;
tie $x, 'Tie::ReverseScalar', $$x; $x
}
$_ = 'foo';
chop Reverse;
print;
__END__
oo
Now, of course, that's not the way that reverse actually works... but isn't that fun?
Update: oops, I had written that this output "fo" (which wouldn't have been interesting at all), but it actually outputs "oo" (which is what makes it cool). Thanks, BrowserUK, for pointing out the typo.
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