Re^3: Changing local variables in subroutine by passing by reference?

[moritz]

My second example didn't uses references at all! That's the differences.

Note that normally your subs are built like this:

sub my_sub {
   my ($arg1, $arg2) = @_;
   ...
}

The assignment to another variable breaks the alias, so if you change $arg1, @_ will not be modified. But if you modify @_ directly,