From robert.l.harris at gmail.com  Fri Feb 14 11:11:47 2014
From: robert.l.harris at gmail.com (Robert L. Harris)
Date: Fri, 14 Feb 2014 12:11:47 -0700
Subject: [Boulder.pm] Adding undefined variables?
Message-ID: <CAOXayVvTzCpzaD6gjJvWOfcV_KxshdxSVGZSBj07NKSPJehArg@mail.gmail.com>

Quicky here.  I'm processing logs do not necessarily know the MAC's of IP's
I'm looking to find usage for.  Right now I'm doing this:



$Usage{$MAC}=0 if ( ! $Usage{$MAC} );
$Usage{$MAC}=$Usage{$MAC}+$NewUsage;


I could have swore there was a way to say something along the line of just
set $Usage{$MAC} to Zero if it's not defined.  Without turning off warnings
is my goal.


Anyone know a better or cleaner way to do this?

Robert


-- 
:wq!
---------------------------------------------------------------------------
Robert L. Harris

DISCLAIMER:
      These are MY OPINIONS             With Dreams To Be A King,
       ALONE.  I speak for                      First One Should Be A Man
       no-one else.                                     - Manowar
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From deandre at deandrecarroll.com  Fri Feb 14 11:22:46 2014
From: deandre at deandrecarroll.com (DeAndre)
Date: Fri, 14 Feb 2014 12:22:46 -0700
Subject: [Boulder.pm] Adding undefined variables?
Message-ID: <49w1qexw9fo75jjk8c5lx55t.1392405766096@email.android.com>

Use 'exists' on hashes to check whether there is an entry for a key.

For example:

$Usage{$MAC}=0 if ( ! exists $Usage{$MAC} );

This should alleviate your warnings problem.


Sent from my Galaxy S?III

-------- Original message --------
From: "Robert L. Harris" <robert.l.harris at gmail.com> 
Date:02/14/2014  12:11 PM  (GMT-07:00) 
To: boulder-pm <boulder-pm at pm.org> 
Subject: [Boulder.pm] Adding undefined variables? 


Quicky here. ?I'm processing logs do not necessarily know the MAC's of IP's I'm looking to find usage for. ?Right now I'm doing this:



$Usage{$MAC}=0 if ( ! $Usage{$MAC} );
$Usage{$MAC}=$Usage{$MAC}+$NewUsage;


I could have swore there was a way to say something along the line of just set $Usage{$MAC} to Zero if it's not defined. ?Without turning off warnings is my goal.


Anyone know a better or cleaner way to do this?

Robert


-- 
:wq!
---------------------------------------------------------------------------
Robert L. Harris

DISCLAIMER:
? ? ? These are MY OPINIONS? ? ? ? ? ?? With Dreams To Be A King,
? ? ?? ALONE.? I speak for? ? ? ? ? ? ? ? ? ? ? First One Should Be A Man
? ? ?? no-one else.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? - Manowar
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From eddow1976 at yahoo.com  Fri Feb 14 14:06:05 2014
From: eddow1976 at yahoo.com (Ed Dow)
Date: Fri, 14 Feb 2014 14:06:05 -0800 (PST)
Subject: [Boulder.pm] Boulder-pm Digest, Vol 41, Issue 1
In-Reply-To: <mailman.1.1392408002.29570.boulder-pm@pm.org>
References: <mailman.1.1392408002.29570.boulder-pm@pm.org>
Message-ID: <1392415565.5682.YahooMailNeo@web163902.mail.gq1.yahoo.com>



It's the ternary logic you're after, I think.?? ;-)? 

Tried to comment but I'm a programmer not a tech writer.? 


#!/usr/bin/perl

my $MAC="10.0.0.1";
my $NewUsage=150;
my %Usage=();

#$Usage{$MAC}=0 if ( ! $Usage{$MAC} );
#$Usage{$MAC}=$Usage{$MAC}+$NewUsage;


#?? Assgin?????????????????? condition????????????????????? 0 if T else F assign new usage

$Usage{$MAC}= (!exists($Usage{$MAC}) ? 0:$Usage{$MAC}+$NewUsage);

print "This should be 0\n";
foreach $key(keys %Usage){ print "$key -> $Usage{$key}\n"; }


$Usage{$MAC}= (!exists($Usage{$MAC}) ? 0:$Usage{$MAC}+$NewUsage);

print "This should be 150\n";
foreach $key(keys %Usage){ print "$key -> $Usage{$key}\n"; }





On Friday, February 14, 2014 1:00 PM, "boulder-pm-request at pm.org" <boulder-pm-request at pm.org> wrote:
 
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Today's Topics:

?  1. Adding undefined variables? (Robert L. Harris)
?  2. Re: Adding undefined variables? (DeAndre)


----------------------------------------------------------------------

Message: 1
Date: Fri, 14 Feb 2014 12:11:47 -0700
From: "Robert L. Harris" <robert.l.harris at gmail.com>
To: boulder-pm <boulder-pm at pm.org>
Subject: [Boulder.pm] Adding undefined variables?
Message-ID:
??? <CAOXayVvTzCpzaD6gjJvWOfcV_KxshdxSVGZSBj07NKSPJehArg at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Quicky here.? I'm processing logs do not necessarily know the MAC's of IP's
I'm looking to find usage for.? Right now I'm doing this:



$Usage{$MAC}=0 if ( ! $Usage{$MAC} );
$Usage{$MAC}=$Usage{$MAC}+$NewUsage;


I could have swore there was a way to say something along the line of just
set $Usage{$MAC} to Zero if it's not defined.? Without turning off warnings
is my goal.


Anyone know a better or cleaner way to do this?

Robert


-- 
:wq!
---------------------------------------------------------------------------
Robert L. Harris

DISCLAIMER:
? ? ? These are MY OPINIONS? ? ? ? ? ?  With Dreams To Be A King,
? ? ?  ALONE.? I speak for? ? ? ? ? ? ? ? ? ? ? First One Should Be A Man
? ? ?  no-one else.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?  - Manowar
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------------------------------

Message: 2
Date: Fri, 14 Feb 2014 12:22:46 -0700
From: DeAndre <deandre at deandrecarroll.com>
To: boulder-pm at pm.org
Subject: Re: [Boulder.pm] Adding undefined variables?
Message-ID: <49w1qexw9fo75jjk8c5lx55t.1392405766096 at email.android.com>
Content-Type: text/plain; charset="utf-8"

Use 'exists' on hashes to check whether there is an entry for a key.

For example:

$Usage{$MAC}=0 if ( ! exists $Usage{$MAC} );

This should alleviate your warnings problem.


Sent from my Galaxy S?III

-------- Original message --------
From: "Robert L. Harris" <robert.l.harris at gmail.com> 
Date:02/14/2014? 12:11 PM? (GMT-07:00) 
To: boulder-pm <boulder-pm at pm.org> 
Subject: [Boulder.pm] Adding undefined variables? 


Quicky here. ?I'm processing logs do not necessarily know the MAC's of IP's I'm looking to find usage for. ?Right now I'm doing this:



$Usage{$MAC}=0 if ( ! $Usage{$MAC} );
$Usage{$MAC}=$Usage{$MAC}+$NewUsage;


I could have swore there was a way to say something along the line of just set $Usage{$MAC} to Zero if it's not defined. ?Without turning off warnings is my goal.


Anyone know a better or cleaner way to do this?

Robert


-- 
:wq!
---------------------------------------------------------------------------
Robert L. Harris

DISCLAIMER:
? ? ? These are MY OPINIONS? ? ? ? ? ?? With Dreams To Be A King,
? ? ?? ALONE.? I speak for? ? ? ? ? ? ? ? ? ? ? First One Should Be A Man
? ? ?? no-one else.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? - Manowar
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------------------------------

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From gaurav at ggvaidya.com  Fri Feb 14 19:20:01 2014
From: gaurav at ggvaidya.com (Gaurav Vaidya)
Date: Fri, 14 Feb 2014 20:20:01 -0700
Subject: [Boulder.pm] Boulder-pm Digest, Vol 41, Issue 1
In-Reply-To: <mailman.1.1392408002.29570.boulder-pm@pm.org>
References: <mailman.1.1392408002.29570.boulder-pm@pm.org>
Message-ID: <9F366B16-B4FE-4F69-9119-E0AA90FA37F7@ggvaidya.com>

Hullo!

On 14 Feb, 2014, at 1:00 pm, boulder-pm-request at pm.org wrote:
> Quicky here.  I'm processing logs do not necessarily know the MAC's of IP's
> I'm looking to find usage for.  Right now I'm doing this:
> 
> 
> 
> $Usage{$MAC}=0 if ( ! $Usage{$MAC} );
> $Usage{$MAC}=$Usage{$MAC}+$NewUsage;
> 
> 
> I could have swore there was a way to say something along the line of just
> set $Usage{$MAC} to Zero if it's not defined.  Without turning off warnings
> is my goal.
You might be thinking of the ?logical defined-or? operator: http://perldoc.perl.org/perlop.html#Logical-Defined-Or

I think you could track your usage counts like this: https://gist.github.com/gaurav/9014086

Hope that helps!

cheers,
Gaurav