#!/usr/bin/perl

use strict;
use warnings;

use Benchmark qw(cmpthese);

cmpthese(-1, { bless => sub {
                   my @o;
                   for (0..1000) {
                       my $h = { foo => 'bar' };
                       bless $h, 'Foo';
                       push @o, $h;
                   }
               },
               nobless => sub {
                   my @o;
                   for (0..1000) {
                       my $h = { foo => 'bar' };
                       push @o, $h;
                   }
               },
               bless_scalar => sub {
                   my @o;
                   for (0..1000) {
                       my $s = \(my $t);
                       bless $s, 'Foo';
                       push @o, $s;
                   }
               }
             }
        );

[download]
... says ... 
              Rate       bless     nobless bless_reuse
bless        575/s           --         -32%         -39%
nobless      845/s          47%           --         -11%
bless_scalar 948/s          65%          12%           --

[download]
so, the bless operation is pretty cheap.

On the other hand, method calls are quite more expensive that accesing a hash entry.

In reply to Re: Time efficiency of object creation in Perl (or the "bless" function) by salva
in thread Time efficiency of object creation in Perl (or the "bless" function) by kikumbob

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