As such, nothing looks/IS wrong in your code. It's just that it does not work the way you are thinking it would.
my (@arr1, @arr2, $var, @arr3) = ( (1,2),(11,22),"0", () );
print "\n[@arr1]";
print "\nvar is $var";
RHS of first line is flattened into a single list and copied in its entirety into @arr1.
All other elements in LHS of first line are empty. Remember why you can not pass multiple arrays to a subroutine?
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