Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Re^2: Range in Getopt

by roho (Abbot)
on Oct 03, 2012 at 13:26 UTC ( #997054=note: print w/ replies, xml ) Need Help??


in reply to Re: Range in Getopt
in thread Range in Getopt

I like your solution, but when no -d parameter is present, the following warning is displayed:

Warning: something's wrong at C:\tmp\getopt-range.pl line 15.

This appears to be a warning from Getopt::Long. I tried adding return 1 if !defined @_; at the top of the sub but the warning persists.

"Its not how hard you work, its how much you get done."


Comment on Re^2: Range in Getopt
Re^3: Range in Getopt
by james2vegas (Chaplain) on Oct 03, 2012 at 18:34 UTC
    That is because while the d option's value is required, the d option itself is not, check the definedness of $_debug afterwards:

    use Getopt::Long; my $_debug; GetOptions('d=i' => sub { $_debug = $_[1]; ($_debug > 0 && $_debug <= 4) or die "Invalid Debug Level ($_d +ebug)" } ) or exit 1; die "Debug Level is required" unless defined $_debug; warn "Debug Level is $_debug\n";

    or set a default value before GetOptions:

    use Getopt::Long; my $_debug = 0; GetOptions('d=i' => sub { $_debug = $_[1]; ($_debug > 0 && $_debug <= 4) or die "Invalid Debug Level ($_d +ebug)" } ) or exit 1; warn "Debug Level is $_debug\n";

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://997054]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others perusing the Monastery: (6)
As of 2015-07-06 08:57 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (70 votes), past polls