Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

In the old unexplored code at work, I discovered a subroutine id2path that converts a numeric id of an object to a path (where some content related to the object is stored). I did not like the way how it was implemented, and adding strictures, underlines, and whitespace did not make it much better:

sub id2path { my $id = shift; return q() unless $id; my $path; if ($id > 999_999) { $path = sprintf '%03d/%03d/%03d', $id / 1_000_000, ($id / 1_000) % 1_000, $id % 1_000; } else { $path = sprintf '%02d/%02d/%02d', $id / 10_000, ($id / 100) % 100, $id % 100; } return $path; }

I do not like strange constants and repeated code. However, the only alternative I was able to write was the following:

sub id2path_new { my $id = shift or return q(); my $chunk_length = length $id > 6 ? 3 : 2; $id = sprintf '%0' . ($chunk_length * 3) . 'd', $id; my $chunk = ".{$chunk_length}"; my $path = join '/', $id =~ / ^ (.*) ($chunk) ($chunk) $ /xg; return $path; }

I do not like it much either. Do you have any ideas?

To make your work easier, here is how I tested it:

use Test::More tests => 23; is(id2path_new($_), id2path($_), "id=$_") for q(), 0, 1, 9, 10, 99, 100, 999, 1000, 9999, 10000, 99999, 100000, 999999, 1e6, 1e7-1, 1e7, 1e8-1, 1e8, 1e9, 1e10, 1e11, 1e12;

لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Can you make it nicer? by choroba

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others making s'mores by the fire in the courtyard of the Monastery: (8)
    As of 2014-12-21 23:20 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Is guessing a good strategy for surviving in the IT business?





      Results (109 votes), past polls