Perl Security: 5. When using functions, remember...
Why do we have to bother with @_ ?

Take this to your advantage in your (small) funcions

It is faster not to reassign from @_ to lexical variables

It keeps your code smaller

It reminds you not to grow your functions too much

And don't despair... This is bound to change soon

In Perl6: sub myfunc ($var1, $var2) { (...) }