I don't know if there is any real value in benchmarking this because it may change from different vesion of Perl but the results would indicate that using shift is faster. 
#!/usr/bin/env perl

use strict; use warnings;
use Benchmark qw/ cmpthese /;
cmpthese(10000000, {
        shift => sub { my $volume = shift; my $message = shift; },
        inline => sub { my ($volume, $message) = @_ } 
        }
);

[download]
And the output is - 
bruce:0:~/tmp $ ./p.pl
            Rate inline  shift
inline 3300330/s     --   -29%
shift  4629630/s    40%     --

[download]

In reply to Re^2: Macro in perl code? by bruceb3
in thread Macro in perl code? by pileofrogs

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