[Israel.pm] Cool usage hack which I saw in another mailing list
szabgab at gmail.com
Fri Mar 4 07:36:50 PST 2005
On Fri, 04 Mar 2005 17:02:50 +0200, Omer Zak <omerz at actcom.co.il> wrote:
> There is a backup script at
> http://www.sanitarium.net/unix_stuff/backups/diff_backup.pl.txt which is
> too cool for words.
> The preceding is a really great idea. Why didn't everyone think of that?
> Much cleaner than an ugly usage() routine.
I would not use this code as an example of good coding standards.
Only to show how can you take a shell-like perl script and create a
real perl script
And to the specific point of disaplying usage message.
I normally call usage() from several places not only when -h is given.
There might be a case of bad parameters provided or other reason to call
it so it is better to put it in a function.
# comments are usually used for developer comments while
=pod is used for documentation.
Therefore the usage information should be part of the =pod and not
part of the comment.
...and then you could go with Pod::Usage that can extract part of the pod.
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