http://qs321.pair.com?node_id=663905


in reply to Re: Modify a hash via its reference
in thread Modify a hash via its reference

No need for the "()" around a single my variable declaration
This is true in most situations but not all. From the OP's code:
my ( $Ref_to_Hash ) = @_;
In this style of parameter initialization, the parentheses are in fact required. Otherwise $Ref_to_Hash will be assigned the number of arguments, not the value of the first one.