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Full Discussion: PERL : check + or - sign in a variable
Top Forums Shell Programming and Scripting PERL : check + or - sign in a variable Post 302571434 by durden_tyler on Monday 7th of November 2011 10:56:57 AM
Old 11-07-2011
Quote:
Originally Posted by rangarasan
...
if it is string scalar variable, use regex.
...
Looks like the integer test works with strings as well.

Code:
$
$ perl -le '$x = "0"; if ($x >= 0) {print "positive"} else {print "negative"}'
positive
$
$ perl -le '$x = "1"; if ($x >= 0) {print "positive"} else {print "negative"}'
positive
$
$ perl -le '$x = "9"; if ($x >= 0) {print "positive"} else {print "negative"}'
positive
$
$ perl -le '$x = "+9"; if ($x >= 0) {print "positive"} else {print "negative"}'
positive
$
$ perl -le '$x = "+0.99"; if ($x >= 0) {print "positive"} else {print "negative"}'
positive
$
$ perl -le '$x = "-0.99"; if ($x >= 0) {print "positive"} else {print "negative"}'
negative
$
$ perl -le '$x = "-1"; if ($x >= 0) {print "positive"} else {print "negative"}'
negative
$
$

tyler_durden
 

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LEARN ABOUT DEBIAN

courier::config

Courier::Config(3pm)					User Contributed Perl Documentation				      Courier::Config(3pm)

NAME

       Courier::Config - Class providing configuration information for Perl modules related to the Courier MTA

SYNOPSIS

	   use Courier::Config;

	   # Courier base configuration:
	   my $config_dir	   = Courier::Config->config_dir;
	   my $runtime_dir	   = Courier::Config->runtime_dir;
	   my $courier_executable  = Courier::Config->courier_executable;
	   my $courier_version	   = Courier::Config->courier_version;

	   # Courier::Filter configuration:
	   my $filter_conf_file    = Courier::Config->filter_conf_file;

DESCRIPTION

       This class provides configuration information for Perl modules related to the Courier MTA, e.g. installation specific file system paths.

   Courier base configuration
       The following methods provide information about Courier's base configuration:

       config_dir: returns string
	   The base configuration directory of Courier.

       runtime_dir: returns string
	   The directory where Courier keeps the message queue ("msgq", "msgs", "tmp") and courierfilter sockets ("filters", "allfilters").

       courier_executable: returns string
	   The full path of the Courier daemon executable.

       courier_version: returns version
	   The version number of the Courier installation.

   Courier::Filter configuration
       The following Courier::Filter configuration information is provided:

       filter_conf_file: returns string
	   The absolute file name of the Courier::Filter courier-filter-perl configuration file.

SEE ALSO

       For AVAILABILITY, SUPPORT, and LICENSE information, see Courier::Filter::Overview.

AUTHOR

       Julian Mehnle <julian@mehnle.net>

perl v5.14.2							    2011-12-27						      Courier::Config(3pm)
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