Number Padding

jpk236 has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: Number Padding by johnnywang (Priest) on May 27, 2005 at 17:18 UTC
`$num = sprintf("%02d", $num);` [download]	[reply] [d/l]
Re: Number Padding by djohnston (Monk) on May 27, 2005 at 17:19 UTC
See `perldoc -f sprintf`.	[reply] [d/l]
Re: Number Padding by marnanel (Beadle) on May 27, 2005 at 17:19 UTC
Sure, just use sprintf. `my $padded = sprintf "%02d", $num;` [download]	[reply] [d/l]
Re: Number Padding by holli (Abbot) on May 27, 2005 at 17:20 UTC
`$num = sprintf ("%02d", $num);` holli, /regexed monk/	[reply] [d/l]
Re: Number Padding by mikeraz (Friar) on May 27, 2005 at 17:22 UTC
Why won't sprintf function for your purposes? `#!/usr/bin/perl foreach $p ( 2..5 ) { print sprintf ("%0${p}d\n", $p); } __END__ prints: 02 003 0004 00005` [download]	[reply] [d/l]
Re^2: Number Padding by ihb (Deacon) on May 27, 2005 at 18:27 UTC
Don't forget the star syntax: `sprintf '%0d', $len, $value;` [download] `ihb` See perltoc if you don't know which perldoc to read!*	[reply] [d/l]
Re: Number Padding by omega_monk (Scribe) on May 27, 2005 at 17:24 UTC
I just learned about the sprintf function... There may be some useful info there. Also check out sprintf. Update: added the link to sprintf	[reply]
Re: Number Padding by jpk236 (Monk) on May 27, 2005 at 17:27 UTC
smacks head duh! thanks guys! - Justin	[reply]
Re: Number Padding by tcf03 (Deacon) on May 27, 2005 at 17:55 UTC
This isnt perl but I once had to do this with directory names in shell script mkdir `awk -vmax=31 'BEGIN{for (i=1;i<=max;i++) printf "%.2d ",i; prin +t}'` [download] is one of the cooler ways ive found to do this, then there is seq mkdir `seq -w 1 31` [download] as I said not perl and a bit off the beaten track... Ted -- "That which we persist in doing becomes easier, not that the task itself has become easier, but that our ability to perform it has improved." --Ralph Waldo Emerson	[reply] [d/l] [select]