Just want to learn how these are read into array but I don't seem to get it right what do I go wrong?
Below is the sample
Thanks
input
1 2 3 4
5 6 7 8
9 1 2 3
4 5 6 7
#!/usr/bin/perl
open (InFILE,"input");
while (<InFILE>) {
@ar = split ; (5 Replies)
I'm trying to make changes in a file using the following bash script:
#!/bin/bash
MYHOME=`echo $HOME`
README=$MYHOME"/environment"
IAM=`whoami`
CHANGEPATHLIST="TALOG TACONFIG TAINFO TAWORK TMPSPACE"
for var in $CHANGEPATHLIST
do
perl -pi -e 's/sacuser1/$IAM/ if m/$var/' $README... (3 Replies)
I am trying to read in a 2 column data file into Perl Hash array index. Here is my code.
#!/usr/bin/perl -w
use strict;
use warnings;
my $file = "file_a";
my @line = ();
my $index = 0;
my %ind_file = ();
open(FILE, $file) or die($!);
while(<FILE>) {
chomp($_);
if ($_ eq '')
{
... (1 Reply)
I was trying to store the number of lines in a file and store it in a file.after that i want to store the information in a file to a variable which is further used in the if loop to check certain condition.
#!/bin/bash
cat <file> | wc -l > count.txt
x="$count.txt";
i=10;
if ; then
cat... (10 Replies)
Hi, I am writting some perl scripts for daily backup process. In which I want to pass some data/referance from another txt file. Text file contains only one column and multiple rows. I want to pass this data to variables of another perl script.
e.g.
Refdoc.txt file contains data as:
perl1... (3 Replies)
I am new to Perl and just started using the data::dumper.
i have been unable to figure out how to take the output that comes from the data::dumper and redirect it to a file.
I tried this....
sub postEvent {
my $this = shift;
# print "Passed parameters, " . Dumper(\@_) .... (3 Replies)
HI,
i have variable in perl like below
$tmp="/home/sai/automation/work/TFP_GN.txt"
it can conatain any path its filled from config file.
now i want extarct the path upto this /home/sai/automation/work/ and put it in another variable
say... (4 Replies)
Hi,
i need a perl script which reads the file, content is given below. and output in new file.
TARGET DRIVE IO1 IO2 IO3 IO4 IO5
------------ --------- --------- --------- --------- ---------
0a.1.8 266 236 ... (3 Replies)
Hi all,
I have written a perl code and stored the data into Data structure using Data::Dumper module.
But not sure how to retreive the data from the Data::Dumper.
Eg.
Based on the key value( Here CRYPTO-6-IKMP_MODE_FAILURE I should be able to access the internal hash elements(keys) ... (1 Reply)
I have a file abc.ini and declared many variables in that file, one of the variable(DBname) value I am trying to read in my perl script but getting error.
File abc.ini content
# database name
DBname =UATBOX
my $ex_stat;
my $cmd_output;
$ex_stat = "\Qawk '/^DBname/{print... (2 Replies)
Discussion started by: Devesh5683
2 Replies
LEARN ABOUT DEBIAN
data::dumper::concise::sugar
Data::Dumper::Concise::Sugar(3pm) User Contributed Perl Documentation Data::Dumper::Concise::Sugar(3pm)NAME
Data::Dumper::Concise::Sugar - return Dwarn @return_value
SYNOPSIS
use Data::Dumper::Concise::Sugar;
return Dwarn some_call(...)
is equivalent to:
use Data::Dumper::Concise;
if (wantarray) {
my @return = some_call(...);
warn Dumper(@return);
return @return;
} else {
my $return = some_call(...);
warn Dumper($return);
return $return;
}
but shorter. If you need to force scalar context on the value,
use Data::Dumper::Concise::Sugar;
return DwarnS some_call(...)
is equivalent to:
use Data::Dumper::Concise;
my $return = some_call(...);
warn Dumper($return);
return $return;
If you need to force list context on the value,
use Data::Dumper::Concise::Sugar;
return DwarnL some_call(...)
is equivalent to:
use Data::Dumper::Concise;
my @return = some_call(...);
warn Dumper(@return);
return @return;
If you want to label your output, try DwarnN
use Data::Dumper::Concise::Sugar;
return DwarnN $foo
is equivalent to:
use Data::Dumper::Concise;
my @return = some_call(...);
warn '$foo => ' . Dumper(@return);
return @return;
If you want to output a reference returned by a method easily, try $Dwarn
$foo->bar->{baz}->$Dwarn
is equivalent to:
my $return = $foo->bar->{baz};
warn Dumper($return);
return $return;
If you want to format the output of your data structures, try DwarnF
my ($a, $c) = DwarnF { "awesome: $_[0] not awesome: $_[1]" } $awesome, $cheesy;
is equivalent to:
my @return = ($awesome, $cheesy);
warn DumperF { "awesome: $_[0] not awesome: $_[1]" } $awesome, $cheesy;
return @return;
If you want to immediately die after outputting the data structure, every Dwarn subroutine has a paired Ddie version, so just replace the
warn with die. For example:
DdieL 'foo', { bar => 'baz' };
DESCRIPTION
use Data::Dumper::Concise::Sugar;
will import Dwarn, $Dwarn, DwarnL, DwarnN, and DwarnS into your namespace. Using Exporter, so see its docs for ways to make it do something
else.
Dwarn
sub Dwarn { return DwarnL(@_) if wantarray; DwarnS($_[0]) }
$Dwarn
$Dwarn = &Dwarn
$DwarnN
$DwarnN = &DwarnN
DwarnL
sub Dwarn { warn Data::Dumper::Concise::Dumper @_; @_ }
DwarnS
sub DwarnS ($) { warn Data::Dumper::Concise::Dumper $_[0]; $_[0] }
DwarnN
sub DwarnN { warn '$argname => ' . Data::Dumper::Concise::Dumper $_[0]; $_[0] }
Note: this requires Devel::ArgNames to be installed.
DwarnF
sub DwarnF (&@) { my $c = shift; warn &Data::Dumper::Concise::DumperF($c, @_); @_ }
TIPS AND TRICKS
global usage
Instead of always just doing:
use Data::Dumper::Concise::Sugar;
Dwarn ...
We tend to do:
perl -MData::Dumper::Concise::Sugar foo.pl
(and then in the perl code:)
::Dwarn ...
That way, if you leave them in and run without the "use Data::Dumper::Concise::Sugar" the program will fail to compile and you are less
likely to check it in by accident. Furthmore it allows that much less friction to add debug messages.
method chaining
One trick which is useful when doing method chaining is the following:
my $foo = Bar->new;
$foo->bar->baz->Data::Dumper::Concise::Sugar::DwarnS->biff;
which is the same as:
my $foo = Bar->new;
(DwarnS $foo->bar->baz)->biff;
SEE ALSO
You probably want Devel::Dwarn, it's the shorter name for this module.
perl v5.10.1 2011-01-20 Data::Dumper::Concise::Sugar(3pm)