Using filepath method to identify an .html page

Ferrous Cranus nikos.gr33k at gmail.com
Tue Jan 22 19:26:10 CET 2013


Τη Τρίτη, 22 Ιανουαρίου 2013 6:11:20 μ.μ. UTC+2, ο χρήστης Chris Angelico έγραψε:
> On Wed, Jan 23, 2013 at 2:59 AM, Ferrous Cranus <nikos.gr33k at gmail.com> wrote:
> 
> > I just need a way to CONVERT a string(absolute path) to a 4-digit unique number with INT!!! That's all i want!! But i cannot make it work :(
> 
> 
> 
> Either you are deliberately trolling, or you have a major
> 
> comprehension problem. Please go back and read, carefully, all the
> 
> remarks you've been offered in this thread. Feel free to ask for
> 
> clarification of anything that doesn't make sense, but be sure to read
> 
> all of it. You are asking something that is fundamentally
> 
> impossible[1]. There simply are not enough numbers to go around.
> 
> 
> 
> ChrisA
> 
> [1] Well, impossible in decimal. If you work in base 4294967296, you
> 
> could do what you want in four "digits".

Fundamentally impossible?

Well....

OK: How about this in Perl:

$ cat testMD5.pl
use strict;

foreach my $url(qw@ /index.html /about/time.html @){
        hashit($url);
}

sub hashit {
   my $url=shift;
   my @ltrs=split(//,$url);
   my $hash = 0;

   foreach my $ltr(@ltrs){
        $hash = ( $hash + ord($ltr)) %10000;
   }
   printf "%s: %0.4d\n",$url,$hash
   
}


which yields:
$ perl testMD5.pl 
/index.html: 1066
/about/time.html: 1547



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