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Posted by Jeff Boes on October 1, 2004, 9:20 am
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Hmm, I just found, much to my surprise, that an AppConfig object retains state
for *absent* parameters. E.g.,
my $cfg = AppConfig->new();
$cfg->define('foo');
$cfg->define('bar');
$cfg->args([qw(--foo --bar)]);
if ($cfg->foo) { print "yesn"; }
$cfg->args([qw(--bar)]);
if ($cfg->foo) { print "yesn"; }
This will print "yes" twice; I had thought that the second "args" method would
start with a fresh state.
Is there some way (besides recreating the object with "new") to reset the state
so all config variables are undefined? I suppose I could write one myself using
"varlist", but it seems like it ought to be already in there, somewhere.
--
Jeff Boes vox 269.226.9550 ext 24
Database Engineer fax 269.349.9076
Nexcerpt, Inc. http://www.nexcerpt.com
...Nexcerpt... Extend your Expertise
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Posted by Ted Zlatanov on October 4, 2004, 3:10 pm
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On Fri, 01 Oct 2004, jboes@qtm.net wrote:
> Hmm, I just found, much to my surprise, that an AppConfig object retains state
> for *absent* parameters. E.g.,
>
>$cfg->args([qw(--bar)]);
> if ($cfg->foo) { print "yesn"; }
>
> This will print "yes" twice; I had thought that the second "args" method would
> start with a fresh state.
Your first statement and the example are not the same. args() is not
documented to remove parameters, only to read new ones in.
> Is there some way (besides recreating the object with "new") to reset the
> state
> so all config variables are undefined? I suppose I could write one myself using
> "varlist", but it seems like it ought to be already in there, somewhere.
Use new() or access the internal hash directly (not recommended). I
think that if you are removing parameters, you are probably not using
AppConfig properly - it's not a general purpose data storage solution,
only a configuration parameter parsing module.
Ted
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