Mmmm i think that there is an error in camel book third edition,I looked if someone noticed before me, but i didnt find anything ...

Likewise, you can pass a reference into a subroutine and use it withou
+t dereferencing:

%units = (miles => 6, stones => 11);  
fillerup( \%units );          # Pass in a reference
print $units{quarts};         # Prints 4

sub fillerup {
    local *hashsym = shift;   # Assign \%units to the typeglob
    $hashsym{quarts} = 4;     # Affects %units; no dereferencing neede
+d!
}

These are tricky ways to pass around references cheaply when you don't
+ want to have to explicitly dereference them. Note that both techniqu
+es only work with package variables; they would not have worked had w
+e declared %units with my.
[download]

I have declare my %units and still working ....
Under use strict i have to declare our %hashsym, but still working again.
Im missing something or its an error?

$anarion=\$anarion;

s==q^QBY_^=,$_^=$[x7,print