in reply to Convert seconds into a formatted ddd:hh:mm:ss string

You could do this with an amusing (ab)use of gmtime thus :- 
  $string = join ":", map { sprintf "%02d", $_ } (gmtime($seconds))[7,
+2,1,0];

[download]
Or perhaps slightly more sanely as 
  $string = sprintf "%02d:%02d:%02d:%02d", (gmtime($seconds))[7,2,1,0]
+;

[download]
If you want to strip the string then run this on it 
  $string =~ s/\G00://g;

[download]
This regexp idea came from merlyn via Effective Perl

Replies are listed 'Best First'.
RE: RE: Convert seconds into a formatted ddd:hh:mm:ss string
by merlyn (Sage) on Aug 31, 2000 at 14:46 UTC
    Yes yes yes. This is what I was getting at when I said earlier (in the chatterbox) that the code looked "far too regular". ncw, you've done a nice job abstracting the problem.

    Also, the use of sprintf there to add the leading 0 is much more perl-ish than the few odd snippets I've seen in this thread of: 

    $var = "0$var" if $var < 10;

    [download]
    Maybe it's because I first saw that weird-looking code in a Matt Wright script, and it's now tainted me. It scares me to think what other horrors people have now learned from Matt Wright scripts. {grin}

    I think for me the problem is that the non-sprintf solution does not scale well. For example, what if you wanted three digits? Do you add another test? 

    $var = $var < 10 ? "00$var" : $var < 100 ? "0$var" : $var;

    [download]
    No, if I saw code like that in a code review, I'd flag that immediately with "this must be changed before deployment: unmaintainable".

    So, get cozy with sprintf: it solves many problems (including the rounding problem discussed a few days ago).

    -- Randal L. Schwartz, Perl hacker

[reply]
[d/l]
[select]

In Section Cool Uses for Perl