You could do something like this, a hash of arrays:
But keep in mind that hash keys must be unique, so if you can have more than one city and zipcode per state the data structure would need to be changed a bit.
I have a little problem. To keep a configuration simple, I've exceeded my perl knowledge. :-) I've worked with multi-dimentional arrays before, but this one has me beat:
@info = (
{
'defval' => 'abc'
'stats' = (
{ 'name' => 'a', },
{ 'name' =>... (1 Reply)
Hi,i have a code fragment below.
%tag = (); #line 1
$tag{'info'} = $datastring; #line 2
$resp = $ua->request( #$ua is a user agent
POST 'http://10.2.3.0' ,
Content_Type => application/x-www-form-urlencoded
Content => #line 3 I am not sure of what the code... (3 Replies)
Hi all experts,
May I know how to read a csv file and read the content in a hash in PERL?
Currently, I hard-coded and defined it in my code. I wanna know how to make up the %mymap hash thru reading the cfg.txt
====
csv file(cfg.txt):
888,444
999,333
===
#!/usr/bin/perl
my... (1 Reply)
I have a script with dynamic hash of hashes , and I want to print the entire hash (with all other hashes).
Itried to do it recursively by checking if the current key is a hash and if yes call the current function again with refference to the sub hash.
Most of the printing seems to be OK but in... (1 Reply)
Hi ,
I have an input.txt file that i read
node: id= c1, class=nb, cx=100, cy=100, r=10
node: id=c2, class=b, cx=150, cy=130, r=10
node: id=c3, class=nb, cx=50, cy=80, r=10
node: id=c4, class=nb, cx=120, cy=200, r=10
i split over , and = to create a global array and then passed it to a... (6 Replies)
Hello dear unix command line friends !
I'm looking for a simple combinaison of ls & awk (maybe grep) to print:
list of folders of a directory
|_ ordered by size
like what I have with
$ du -sk ./* | sort -rn
printing that result:
8651520 ./New Virtual Machine_1
8389120 ./Redhat
... (1 Reply)
Hi,
A piece of script from Perl-cookbook I do not understand, and post here for explanation.
The purpose is to find the element in either array (union), and in both array (intersection). Thank you in advance.
@a=qw(1 3 5 6 7 8);
@b=qw(2 3 5 7 9);
foreach $e (@a, @b) {$union{$e}++ &&... (3 Replies)
How do I get the unique hashes from an array of hashes?
@ar1 = ( {a=>1,b=>2}, {c=>3,d=>4},{a=>1,b=>2});I need :
@ar2 = ( {a=>1,b=>2}, {c=>3,d=>4});Thanks. (2 Replies)
Hi, I have a hash of hash where it has
name, activities and count
i have data like this -
$result->{$name}->{$activities} = $value;
content of that are -
name - robert tom cat peter
activities - running, eating, sleeping , drinking, work
i need to print output as below
... (3 Replies)
Discussion started by: asak
3 Replies
LEARN ABOUT DEBIAN
aptpkg::hash
AptPkg::hash(3pm) User Contributed Perl Documentation AptPkg::hash(3pm)NAME
AptPkg::hash - a helper class for implementing tied hashes
SYNOPSIS
use AptPkg::hash;
DESCRIPTION
The AptPkg::hash class provides hash-like access for objects which have an underlying XS implementation.
Such objects need to add AptPkg::hash to @ISA, provide get, set and exists methods, and an iterator class.
AptPkg::hash
new([XS_OBJECT])
Create a object as a tied hash. The object is implemented as a hash reference blessed into the class, which in turn is tied to
AptPkg::hash.
This means that both $obj->method() and $obj->{key} valid, the latter invoking get/set (through FETCH/STORE).
The tie associates an array reference with the hash, which initially contains a reference to the hash, the XS object and an anon hash
which may be used by subclasses to store state information.
If no XS object is passed, one is created via new in the XS class. The name of that class is constructed from the class name, by
lower-casing the last component and prefixing it with an underscore (eg. AptPkg::Config becomes AptPkg::_config).
If the module contains a @KEYS array, then the private hash will be populated with those entries as keys (see the description below of
the AptPkg::hash::method class).
_self, _xs, _priv
Accessors which may be used in subclass methods to fetch the three array elements associated with the hash reference.
keys(ARGS)
In a scalar context, creates and returns a new iterator object (the class name with the suffix ::Iter appended).
The XS object, the private hash and any arguments are passed to the constructor.
In an array context, the iterator is used to generate a list of keys which are then returned.
The iterator class must implement a next method, which returns the current key and advances to the next.
AptPkg::hash::method
The AptPkg::hash::method class extends AptPkg::hash, providing a simple way to map a fixed set of keys (defined by the @KEYS array) into
method calls on either the object, or the internal XS object.
Classes inheriting from AptPkg::hash::method should provide an iterator class which inherits from AptPkg::hash::method::iter.
AUTHOR
Brendan O'Dea <bod@debian.org>
perl v5.14.2 2012-03-16 AptPkg::hash(3pm)