Quoting from perlobj under 'Method Invocation': 

For C++ fans, there's also a syntax using -> notation that
does exactly the same thing.  The parentheses are required
if there are any arguments.
 
$fred = Critter->find("Fred");
$fred->display('Height', 'Weight');
The indirect object syntax should also work without parens:

copy $copy_file "/ref/webmail","/www/$domain";

[download]

But as TheDamian - and many other people - tell us, this brings more pain than joy, so I'd stick with the extra parentheses.

-- Hofmator

In reply to Re: Module object seen as empty variable? by Hofmator
in thread Module object seen as empty variable? by c

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