Thanks. I knew I was doing something wrong.
Here's another attempt.
#!/usr/bin/perl -w
use strict;
use Benchmark;
my $file = $0;
open IN, $file or die "$file: $!\n";
sub joinit { seek(IN, 0, 0); my $content = join '', <IN>; }
sub dollarslash { seek(IN, 0, 0); my $content = do { local $/; <IN> }
+}
timethese(100_000, {join => \&joinit,
slash => \&dollarslash} );
Which gives these (much more believable) results:
Benchmark: timing 100000 iterations of join, slash...
join: 12 wallclock secs ( 9.98 usr + 1.33 sys = 11.31 CPU)
slash: 6 wallclock secs ( 3.79 usr + 1.53 sys = 5.32 CPU)
--
<
http://www.dave.org.uk>
"Perl makes the fun jobs fun
and the boring jobs bearable" - me