See also Re: Multiple Regex evaluations or one big one?

Also if you use 

my $str1 = 
my $str2 = 
my $str3 = 
my $str4 =
my $str  = 'очень длинная строка ' x 10;
...

    'qr//i+m//' => q{ $str1 =~ /$re_i/; return; },
    'qr//+m//i' => q{ $str2 =~ /$re/i;  return; },
    'qr//+m//'  => q{ $str3 =~ /$re/;   return; },
    'qr'        => q{ $str4 =~ $re;   return; },

[download]
You get (warning: too few iterations for a reliable count)

If you my $count = -3; you get Timing is consistently zero in estimation loop, cannot benchmark. N=134217728

What this means? don't worry about it :)

In reply to Re^2: qr//i versus m//i ( qr slow ) by Anonymous Monk
in thread qr//i versus m//i by hazylife

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