The fastest way to pass arguments is not to copy them at all

Exactly. Inline the function entirely. Thats much faster.

and to access them inplace in @_

Persoanlly I would caution against this. An innocuous change of

my $foo=shift;
$foo=~s/A.//g;
# to
$_[0]=~s/A.//g;
[download]

Would alter the original variable. Better to do away with the subroutine entirely. Then at least this effect is obvious and as I said you avoid the subroutine jump overhead.

--- demerphq
my friends call me, usually because I'm late....