No difference. I reran it, and it was never more than 3% in favour of either option.

Rate t_map_b t_map_e t_map_b 28799/s -- -0% t_map_e 28844/s 0% -- This is perl, v5.6.1 built for MSWin32-x86-multi-thread
use strict; use warnings; use Benchmark (); sub t_map_b { my $url = shift; return map { "$url/$_\n" } @_; } sub t_map_e { my $url = shift; return map "$url/$_\n", @_; } my $url = 'http://www.domain.com/'; my @list = qw( file0 file1 file2 file3 file4 file5 file6 file7 file8 file9 ); sub test { my ($sub) = @_; $a = join('', $sub->($url, @list)); } Benchmark::cmpthese(-3, { t_map_b => sub { test(\&t_map_b); }, t_map_e => sub { test(\&t_map_e); }, }); $a=$a;

In reply to Re^5: Turning foreach into map? by ikegami
in thread Turning foreach into map? by ghenry

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