Discussion of Perl's three built-in data types: scalars, arrays of scalars, and associative arrays of scalars, known as "hashes". At your command-line: perldoc perldata
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Questions tagged [perl-data-structures]
388 questions
0
votes
1 answer
Can't use string ("Managers::Toke::Interface") as a HASH ref while "strict refs" in use at line 47
I'm building my first Perl constructor and I'm getting this error.
Can't use string ("Managers::Toke::Interface") as a HASH ref while "strict refs" in use at
Here is my constructor.
package Managers::Toke::Interface;
use strict;
use warnings;
use…
user1663896
- 21
- 1
- 1
- 5
0
votes
1 answer
Diff a data structure with a separate added and removed sections
let's say I have the following
my $clean = {
foo => 1,
bar => 2,
baz => 3,
};
my $dirty => {
foo => 1,
bar => 3,
blargh => 4,
};
my $differ = Differ->new; #made up object
$differ->compare( $clean, $dirty…
xenoterracide
- 16,274
- 24
- 118
- 243
0
votes
1 answer
perl cyclic reference. Is this what is happening
I am trying to write a daemon with perl. Now this daemon has the following code
sub b {
my $data;
if (some condition) {
$data->{"endsmeet"} = 1;
} else {
$data->{"endsmeet"} = 2;
}
my $newData = a($data);
}
sub…
Sreeram Ravinoothala
- 742
- 4
- 9
- 17
0
votes
3 answers
Regarding store and retrieve in Perl
$stored_var = retrieve("$batch_text");
%some_hash= %$stored_var;
i think that this is for retrieving some stored hash. what does the %$ signify? Is it just the syntax or does it have more involved meaning?
store \%batch_hash, "$batch_text";
I…
RoyOneMillion
- 225
- 2
- 10
0
votes
1 answer
hide attributes in object oriented perl
Recently I am using chilkat perl library for sending email
http://www.example-code.com/perl/smtp_simpleSend.asp
when i create new object
use chilkat();
# The mailman object is used for sending and receiving email.
$mailman = new…
pavan
- 334
- 6
- 20
0
votes
1 answer
How to print hash of anonymous hashes?
How would I get value of stones if hash structure is as follows?
%HoA =
(
[stones => "ruby"],
[metal => "gold"],
);
I am trying to get using print $HoA->{stones};, but no value is returned.
Robie Nayak
- 819
- 10
- 18
0
votes
2 answers
cant get array of hashes in perl
I have the Employees CSV Data and i
try to insert each employee hash in to an array
open($empOutFh,">empOut.txt")
$hash= [];
while(<$empFh>) {
@columnNames = split /,/, $_ if $.==1;
@columnValues = split /,/, $_;
…
pavan
- 334
- 6
- 20
0
votes
3 answers
Build and Access a Complex Data Structure Using Perl
I have a large one-dimensional hash with lots of data that I need to structure in such a way that I can sort it easily into a format that is the same each time the code executes.
Original Hash Data:
{
'datetime' => 'datetime value',
'param_name' =>…
Lane
- 115
- 2
- 10
0
votes
1 answer
Perl prints only one line but the print to the screen works
I am trying to print a list of the devices that match my specific criteria. When I print everything to the screen, it works great. However, when I print it to a file it only prints one line. I am new to perl so any help would be appreciated.…
user2535431
- 13
- 2
0
votes
3 answers
How to remove some entries in a file?
-rw-r--r-- 1 root root 3178 Jun 29 16:08 FTS_TESTCAMPAIGN1_29_06_2013_160823.html
-rw-r--r-- 1 root root 711 Jun 29 16:08 FTS_ABORT_BACKUP_JOB_1_29_06_2013_160823.html
-rw-r--r-- 1 root root 405 Jun 29 16:08…
user1954970
- 409
- 1
- 5
- 14
0
votes
2 answers
Perl:How to change values in global hash in sub-routine
I have a global hash
our %employee = (
'ename'=>"rahul",
'eno'=>"25",
);
later I want to use it in a subroutine wid different values
sub emp
{
print ("$employee->'ename' = 'satish'");
}
but this is not happening can you please suggest…
user1949084
- 19
0
votes
1 answer
XMLin not parsing XML properly
I have an XML as follows in $response_xml
<?xml version="1.0"…
Chetan Bhise
- 43
- 1
- 6
0
votes
2 answers
How to add an array of an array to values of hash?
I have an array a1 and an array-of-arrays a2.
@a1 = [1,2,3,4,5]
and
@a2 = [ [adf],[bcg],[yet],[gpd],[iop]]
I want to have a hash where a1 are the keys and arrays of a2 as values. How do I do it?
user2377038
- 21
- 1
- 4
0
votes
2 answers
perl optional command line argument
I am new to Perl and wish to know if the following logic works in Perl :-
I have to execute a command using Perl script with some arguments and I need to prepare that
arguments list, some of the arguments are also optional ( may or may not…
Arpit
- 4,259
- 10
- 38
- 43
0
votes
2 answers
Use of uninitialized value
I'm trying to execute this simple code but it's already give me the following error :
Use of uninitialized value $string in string at permutation.pl line 11.
#!usr/bin/perl
use strict ;
use warnings ;
sub message {
my ($string) = @_ ;
print…
Jacoberl
- 63
- 1
- 4