I have a reference to a hash that contains some references. I was just wondering if there was a more simplistic Way of dereferencing the contained references without having to assign them to another reference like this:
What I want is to avoid copying the reference into $temp and then getting the info it's referencing. I don't think @$href->{element} would work seeing that $href is a reference itself....
HI
I have a hash like this
$hashname->{$filesystem}->{'fsname'}=$filesystem;
How to get the values from this multilevel hash.
Thanks in advance... :) (1 Reply)
This is my data
1 0
1 0
1 1
1 2
1 6
1 7
Assume that first field is key and 2nd field is value
I want to create a hash in perl, on this data. My hash should having uniq key and all values by , separated.
1,0,0,1,2,6,7
1 will be my key and rest of are should be values. (3 Replies)
Can Someone explain me why even using Tie::IxHash I can not get the output data in the same order that it was inserted? See code below.
#!/usr/bin/perl
use warnings;
use Tie::IxHash;
use strict;
tie (my %programs, "Tie::IxHash");
while (my $line = <DATA>) {
chomp $line;
my(... (1 Reply)
Hi,
In Perl, is it possible to use a range of numbers with '..' as a key in a hash?
Something in like:
%hash = (
'768..1536' => '1G',
'1537..2560' => '2G'
);
That is, the range operation is evaluated, and all members of the range are... (3 Replies)
Hi ,
i have the below code its working fine when i execute in unix , but its not working in windows could you pls explain me where i am going wrong.
This is the program
$data = { '1' => 'one' ,
'2' => 'two' ,
3 => 'three'
};
print "hello : $data->{'1'}... (2 Replies)
Hi,
I have an hashes of hash, where hash is dynamic, it can be n number of hash. i need to compare data_count values of all .
my %result (
$abc => {
'data_count' => '10',
'ID' => 'ABC122',
}
$def => {
'data_count' => '20',
'ID' => 'defASe',
... (1 Reply)
My issue is that the perl script (as I have done it so far) created empty branches when I try to check some branches on existence.
I am using multydimentional hashes: found it as the best way for information that I need to handle. Saing multidimentional I means hash of hashes ... So, I have
... (2 Replies)
Discussion started by: alex_5161
2 Replies
LEARN ABOUT MOJAVE
tie::refhash
Tie::RefHash(3pm) Perl Programmers Reference Guide Tie::RefHash(3pm)NAME
Tie::RefHash - use references as hash keys
SYNOPSIS
require 5.004;
use Tie::RefHash;
tie HASHVARIABLE, 'Tie::RefHash', LIST;
tie HASHVARIABLE, 'Tie::RefHash::Nestable', LIST;
untie HASHVARIABLE;
DESCRIPTION
This module provides the ability to use references as hash keys if you first "tie" the hash variable to this module. Normally, only the
keys of the tied hash itself are preserved as references; to use references as keys in hashes-of-hashes, use Tie::RefHash::Nestable,
included as part of Tie::RefHash.
It is implemented using the standard perl TIEHASH interface. Please see the "tie" entry in perlfunc(1) and perltie(1) for more
information.
The Nestable version works by looking for hash references being stored and converting them to tied hashes so that they too can have
references as keys. This will happen without warning whenever you store a reference to one of your own hashes in the tied hash.
EXAMPLE
use Tie::RefHash;
tie %h, 'Tie::RefHash';
$a = [];
$b = {};
$c = *main;
$d = "gunk";
$e = sub { 'foo' };
%h = ($a => 1, $b => 2, $c => 3, $d => 4, $e => 5);
$a->[0] = 'foo';
$b->{foo} = 'bar';
for (keys %h) {
print ref($_), "
";
}
tie %h, 'Tie::RefHash::Nestable';
$h{$a}->{$b} = 1;
for (keys %h, keys %{$h{$a}}) {
print ref($_), "
";
}
THREAD SUPPORT
Tie::RefHash fully supports threading using the "CLONE" method.
STORABLE SUPPORT
Storable hooks are provided for semantically correct serialization and cloning of tied refhashes.
RELIC SUPPORT
This version of Tie::RefHash seems to no longer work with 5.004. This has not been throughly investigated. Patches welcome ;-)
LICENSE
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself
MAINTAINER
Yuval Kogman <nothingmuch@woobling.org>
AUTHOR
Gurusamy Sarathy gsar@activestate.com
'Nestable' by Ed Avis ed@membled.com
SEE ALSO perl(1), perlfunc(1), perltie(1)perl v5.18.2 2013-11-04 Tie::RefHash(3pm)