In a one-file script, there is no difference between my, our, and use vars, when declaring a variable outside any given block.
However, the difference comes in when working with functions or multi-file applications.
- my says that this variable cannot be used outside its scope. When this scope goes away, this variable is killed.
- our says that this variable cannot be used outside its scope. When this scope goes away, this variable stays around.
- use vars says that this variable gets to ignore strict. It has no scope (other than the whole program).
A good code example would be the following:
sub foo {
my $x;
$x++;
return $x;
}
print foo() for (0 .. 10);
Try that, then change my to our. You'll see what I mean.
------ /me wants to be the brightest bulb in the chandelier!
Vote paco for President!
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