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In routine_2 your hash reference is stored as the last element in @array.
quoted from perldata
The final element of a list assignment may be an array or a hash:
($a, $b, @rest) = split;
my($a, $b, %rest) = @_;
You can actually put an array or hash anywhere in the list, but the fi
+rst one in the list
will soak up all the values, and anything after it will become undefin
+ed. This may be
useful in a my() or local().
You must decide now, whether to pass the array as last argument to routine_2 or to pass a reference to that array and then use that reference in your subroutine. I'd use the second option. ;o)
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