which is more accurate but slower (because it needs to look ahead).
According to this benchmark on my machine
use strict;
use warnings;
use Benchmark qw(:all);

my $string="He0Hello~~He2World~~";

sub invertedCharclass { $string=~m/He\d([^~]+)~~/g }

sub nonGreedy { $string=~m/He\d(.+?)~~/g }

cmpthese (-10,
    {
        '[^~]+' => \&invertedCharclass,
        '.+?' => \&nonGreedy,
    }
);

[download]
it performs like this:

          Rate [^~]+   .+?
[^~]+ 236537/s    --  -22%
.+?   303038/s   28%    --

[download]

which says, that the non-greedy matchall is even faster than the inverted character class.

In reply to Re^2: Get chars between 2 markers using regular expressions by pKai
in thread Get chars between 2 markers using regular expressions by Anonymous Monk

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