[pacman-dev] [PATCH 2/3] pacsearch with repo-agnostic coloring
allan at archlinux.org
Wed Jan 15 19:13:18 EST 2014
On 16/01/14 02:03, Martti Kühne wrote:
> On Wed, Jan 15, 2014 at 9:50 AM, Allan McRae <allan at archlinux.org> wrote:
>>> + # hash function (x*2+1) is completely arbitrary.
>>> + my $repohash = $v;
>>> + $repohash =~ s/(.)/ord($1)*2+1/ge;
>> I have very little perl knowledge, so I have no idea what that hash is
>> doing. Can someone explain to me so I can see if that "hash" is reasonable.
> Replace each character with its  ascii index times two plus one?
> 'g' is group regexes, 'e' is eval expressions , as to utilize the
> result of the calculation.
>  http://perldoc.perl.org/functions/ord.html
>  http://stackoverflow.com/questions/6082219/perl-regex-e-eval-modifier-with-s
Does that mean the answer can only be odd?
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