want to access single value in a hash

2015-06-18 Thread Sunita Pradhan 
I have following data structure :
my $cmd_param_show = {'scsitrace_start_log_to_disk_true' = 
{'param_val'={'log-to-disk' = 'true'},  
'scsitrace_show' = {'log-to-disk'= 'true',
'enabled'= 'true', 
   'max-chain-size' = 16,
'max-file-size'  = 0}},  'scsitrace_stop' =   
{'param_val'={},'scsitrace_show' = {'log-to-disk'= 
'false','enabled'= 
'false','max-chain-size' = 16, 
   'max-file-size'  = 0}}, 
  'scsitrace_start' ={'param_val'={}, 
'scsitrace_show'  = {'log-to-disk'= 'false',  
  'enabled'= 'true',   
 'max-chain-size' = 16,
'max-file-size'  = 0}},   'scsitrace_dump' =  
   {'param_val'={},  'scsitrace_show' = {'log-to-disk'
= 'false','enabled'= 
'false','max-chain-size' = 16, 
   'max-file-size'  = 0}}, 
  };
How can I access single value from this hash without using loop ? 
I tried to print like :print 
%{$cmd_param_show}-{'scsitrace_start_log_to_disk_true'}-{'param_val'}\n;
It failed .Please help me to get this.
ThanksSunita

Re: want to access single value in a hash

2015-06-18 Thread Akshay Mohit 
Try this:-
print
$cmd_param_show-{'scsitrace_start_log_to_disk_true'}-{'param_val'}-{'log-to-disk'}\n;

-Akshay

On Thu, Jun 18, 2015 at 2:35 PM, Sunita Pradhan 
sunita.pradhan.2...@hotmail.com wrote:

 I have following data structure :

 my $cmd_param_show = {'scsitrace_start_log_to_disk_true' =
  {'param_val'={'log-to-disk' = 'true'},
   'scsitrace_show' = {'log-to-disk'= 'true',
 'enabled'= 'true',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
   'scsitrace_stop' =
{'param_val'={},
 'scsitrace_show' = {'log-to-disk'= 'false',
 'enabled'= 'false',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
'scsitrace_start' =
 {'param_val'={},
  'scsitrace_show'  = {'log-to-disk'= 'false',
 'enabled'= 'true',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
'scsitrace_dump' =
  {'param_val'={},
   'scsitrace_show' = {'log-to-disk'= 'false',
 'enabled'= 'false',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
};

 How can I access single value from this hash without using loop ?

 I tried to print like :
 print
 %{$cmd_param_show}-{'scsitrace_start_log_to_disk_true'}-{'param_val'}\n;

 It failed .
 Please help me to get this.

 Thanks
 Sunita

Re: want to access single value in a hash

2015-06-18 Thread Andrew Solomon 
I'm having trouble understanding your question Sunita. Maybe if you say:

==
I want to write a subroutine helpme which takes two arguments
a hashref and a string. Calling

helpme($cmd_param_show, $some_string)

would return

$some_other_string
==
and explain what $some_string and $some_other_string are, I'd be able to
provide a solution! :)

Andrew


On Thu, Jun 18, 2015 at 10:26 AM, Sunita Pradhan 
sunita.pradhan.2...@hotmail.com wrote:

 Yeah I am able to access the value but how to get the key ?

 -Sunita

 --
 From: akshaymohit2...@gmail.com
 Date: Thu, 18 Jun 2015 14:46:10 +0530
 Subject: Re: want to access single value in a hash
 To: sunita.pradhan.2...@hotmail.com
 CC: beginners@perl.org


 Try this:-
 print
 $cmd_param_show-{'scsitrace_start_log_to_disk_true'}-{'param_val'}-{'log-to-disk'}\n;

 -Akshay

 On Thu, Jun 18, 2015 at 2:35 PM, Sunita Pradhan 
 sunita.pradhan.2...@hotmail.com wrote:

 I have following data structure :

 my $cmd_param_show = {'scsitrace_start_log_to_disk_true' =
  {'param_val'={'log-to-disk' = 'true'},
   'scsitrace_show' = {'log-to-disk'= 'true',
 'enabled'= 'true',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
   'scsitrace_stop' =
{'param_val'={},
 'scsitrace_show' = {'log-to-disk'= 'false',
 'enabled'= 'false',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
'scsitrace_start' =
 {'param_val'={},
  'scsitrace_show'  = {'log-to-disk'= 'false',
 'enabled'= 'true',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
'scsitrace_dump' =
  {'param_val'={},
   'scsitrace_show' = {'log-to-disk'= 'false',
 'enabled'= 'false',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
};

 How can I access single value from this hash without using loop ?

 I tried to print like :
 print
 %{$cmd_param_show}-{'scsitrace_start_log_to_disk_true'}-{'param_val'}\n;

 It failed .
 Please help me to get this.

 Thanks
 Sunita





-- 
Andrew Solomon

Mentor@Geekuni http://geekuni.com/
http://www.linkedin.com/in/asolomon

RE: want to access single value in a hash

2015-06-18 Thread Sunita Pradhan 
Yeah I am able to access the value but how to get the key ?
-Sunita
From: akshaymohit2...@gmail.com
Date: Thu, 18 Jun 2015 14:46:10 +0530
Subject: Re: want to access single value in a hash
To: sunita.pradhan.2...@hotmail.com
CC: beginners@perl.org

Try this:-print 
$cmd_param_show-{'scsitrace_start_log_to_disk_true'}-{'param_val'}-{'log-to-disk'}\n;
 

-Akshay
On Thu, Jun 18, 2015 at 2:35 PM, Sunita Pradhan 
sunita.pradhan.2...@hotmail.com wrote:



I have following data structure :
my $cmd_param_show = {'scsitrace_start_log_to_disk_true' = 
{'param_val'={'log-to-disk' = 'true'},  
'scsitrace_show' = {'log-to-disk'= 'true',
'enabled'= 'true', 
   'max-chain-size' = 16,
'max-file-size'  = 0}},  'scsitrace_stop' =   
{'param_val'={},'scsitrace_show' = {'log-to-disk'= 
'false','enabled'= 
'false','max-chain-size' = 16, 
   'max-file-size'  = 0}}, 
  'scsitrace_start' ={'param_val'={}, 
'scsitrace_show'  = {'log-to-disk'= 'false',  
  'enabled'= 'true',   
 'max-chain-size' = 16,
'max-file-size'  = 0}},   'scsitrace_dump' =  
   {'param_val'={},  'scsitrace_show' = {'log-to-disk'
= 'false','enabled'= 
'false','max-chain-size' = 16, 
   'max-file-size'  = 0}}, 
  };
How can I access single value from this hash without using loop ? 
I tried to print like :print 
%{$cmd_param_show}-{'scsitrace_start_log_to_disk_true'}-{'param_val'}\n;
It failed .Please help me to get this.
ThanksSunita

Re: want to access single value in a hash

2015-06-18 Thread Balasubramanian Duraisamy 
Try this : my @k =keys $cmd_param_show; print $k[0]\n;

On Thu, Jun 18, 2015 at 3:04 PM, Andrew Solomon and...@geekuni.com wrote:

 I'm having trouble understanding your question Sunita. Maybe if you say:

 ==
 I want to write a subroutine helpme which takes two arguments
 a hashref and a string. Calling

 helpme($cmd_param_show, $some_string)

 would return

 $some_other_string
 ==
 and explain what $some_string and $some_other_string are, I'd be able to
 provide a solution! :)

 Andrew


 On Thu, Jun 18, 2015 at 10:26 AM, Sunita Pradhan 
 sunita.pradhan.2...@hotmail.com wrote:

 Yeah I am able to access the value but how to get the key ?

 -Sunita

 --
 From: akshaymohit2...@gmail.com
 Date: Thu, 18 Jun 2015 14:46:10 +0530
 Subject: Re: want to access single value in a hash
 To: sunita.pradhan.2...@hotmail.com
 CC: beginners@perl.org


 Try this:-
 print
 $cmd_param_show-{'scsitrace_start_log_to_disk_true'}-{'param_val'}-{'log-to-disk'}\n;

 -Akshay

 On Thu, Jun 18, 2015 at 2:35 PM, Sunita Pradhan 
 sunita.pradhan.2...@hotmail.com wrote:

 I have following data structure :

 my $cmd_param_show = {'scsitrace_start_log_to_disk_true' =
  {'param_val'={'log-to-disk' = 'true'},
   'scsitrace_show' = {'log-to-disk'= 'true',
 'enabled'= 'true',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
   'scsitrace_stop' =
{'param_val'={},
 'scsitrace_show' = {'log-to-disk'= 'false',
 'enabled'= 'false',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
'scsitrace_start' =
 {'param_val'={},
  'scsitrace_show'  = {'log-to-disk'= 'false',
 'enabled'= 'true',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
'scsitrace_dump' =
  {'param_val'={},
   'scsitrace_show' = {'log-to-disk'= 'false',
 'enabled'= 'false',
 'max-chain-size' = 16,
 'max-file-size'  = 0}},
};

 How can I access single value from this hash without using loop ?

 I tried to print like :
 print
 %{$cmd_param_show}-{'scsitrace_start_log_to_disk_true'}-{'param_val'}\n;

 It failed .
 Please help me to get this.

 Thanks
 Sunita





 --
 Andrew Solomon

 Mentor@Geekuni http://geekuni.com/
 http://www.linkedin.com/in/asolomon