If you don't specify arguments, it passes any existing @_. 
#!/usr/bin/perl
use strict;
use warnings;

yes_ampersand("yes\n");
no_ampersand("no\n");

sub foo {
    print $_[0];
}

sub yes_ampersand {
    print $_[0];
    &foo;   
}

sub no_ampersand {
    print $_[0];
    foo;    
}

[download]
Here's the output: 
yes
yes
no
Use of uninitialized value in print at ampersands.plx line 9.

[download]
--
Marvin Humphrey
Rectangular Research ― http://www.rectangular.com

In reply to Re^3: What's so bad about &function(...)? by creamygoodness
in thread What's so bad about &function(...)? by japhy

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