$key = "a";
$value = "hello";
%myhash = {} ;
push @{ myHash{$key} }, $hello;
print $myHash{$key}."\n";
this script prints
"hello" but has following error message.
Reference found where even-sized list expected at ./test line 5.
can any one help me to fix this problem?? (3 Replies)
I have two arrays
@nextArray contains some files like
\main\1\Xul.xml@@\main\galileo_integration_sjc\0
\main\1\PortToStorageDialog.xml@@\main\galileo_integration_sjc\0
.
.
.
\main\1\PreferencesDialog.xml@@\main\galileo_integration_sjc\0
@otherArray contains some files like
... (2 Replies)
Hi All,
I'm writing a nagios check that will see if our ldap servers are in sync...
I got the status data into a nested array, I would like to search key of each array and if "OK" is NOT present, echo other key=>values in the current array to a variable
so...eg...let take the single array... (1 Reply)
#!/usr/bin/perl
my @arr=("hello", "how", "are", "you");
$l=length(@arr);
print $l;
This print 1.Why?
How can i print the array size = 4?
I want to store these in an array.
hello
how
are
you
And then i want to access these element through indexing.
How can i do this? (4 Replies)
How can I nest substitutions ? My solution just seems cheap ...
sample data
Cisco Catalyst Operating System Software, Version 235.5(18)
Cisco Catalyst Operating System Software, Version 17.6(7)
Cisco Catalyst Operating System Software, Version 19.6(7)
Cisco Catalyst Operating System... (1 Reply)
Hi,
I have a strange problem with arrays in Perl.
That is to say, for me it is strange and perhaps there is a special reason for it that I do not know of.
Not a real Perl Ace.
This is the program, as an example:
#!/usr/bin/perl -w #-d
use strict;
my $pu;
my $pu_list_cmd;
my... (2 Replies)
I'm just having a bit of trouble running this code. It tells me that there's a syntax error on line 29. Any help appreciated.
#!/usr/bin/perl
#
# Phone Book Application
#
%phonebook = (
"Wayne", '34687368',
"Home", '378643287',
"Work", '017374637',
"School",... (2 Replies)
Hello,
I'm quite new to perl so my question is rather basic and I know there is probably a simple way around it but I can't seem to find it.
I have a medium-length code and there is a part that works with a nested for loop:
foreach my $j(@primpiddelta){
for (my $k=1;... (0 Replies)
I want to pass this array as a parameter.
IFS=$'\n'
fortune_lines=($(fortune | fold -w 30 ))
Inside of this line
screen -p 0 -S ${SCREEN_SESSION} -X stuff "`printf "say ${fortune_lines}\r"`"
And I am lost at this point.
I am thinking something like this?
Then make it loop..
... (7 Replies)
Hello,
I'm looking at simplfying a function that flattens an array, it uses recursion and filters objects by type but this seems to be a waste of resources to me at least, using conditionals like this seems like a bad idea.
The array can be a generic type, int, string, float but not some... (2 Replies)
Discussion started by: f77hack
2 Replies
LEARN ABOUT DEBIAN
tree::simple::visitor::fromnestedarray
Tree::Simple::Visitor::FromNestedArray(3pm) User Contributed Perl Documentation Tree::Simple::Visitor::FromNestedArray(3pm)NAME
Tree::Simple::Visitor::FromNestedArray - A Visitor for creating Tree::Simple objects from nested array trees.
SYNOPSIS
use Tree::Simple::Visitor::FromNestedArray;
my $visitor = Tree::Simple::Visitor::FromNestedArray->new();
# given this nested array tree
my $array_tree = [
'Root', [
'Child1', [
'GrandChild1',
'GrandChild2'
],
'Child2'
]
];
# set the array tree we
# are going to convert
$visitor->setArrayTree($array_tree);
$tree->accept($visitor);
# this then creates the equivalent Tree::Simple object:
# Tree::Simple->new("Root")
# ->addChildren(
# Tree::Simple->new("Child1")
# ->addChildren(
# Tree::Simple->new("GrandChild1"),
# Tree::Simple->new("GrandChild2")
# ),
# Tree::Simple->new("Child2"),
# );
DESCRIPTION
Given a tree constructed from nested arrays, this Visitor will create the equivalent Tree::Simple heirarchy.
METHODS
new There are no arguments to the constructor the object will be in its default state. You can use the "setNodeFilter", "includTrunk" and
"setArrayTree" methods to customize its behavior.
includTrunk ($boolean)
Setting the $boolean value to true(1) will cause the node value of the $tree object passed into "visit" to be set with the root value
found in the $array_tree. Setting it to false(0), or not setting it, will result in the first value in the $array_tree creating a new
node level.
setNodeFilter ($filter_function)
This method accepts a CODE reference as its $filter_function argument and throws an exception if it is not a code reference. This code
reference is used to filter the tree nodes as they are created, the $filter_function is passed the node value extracted from the array
prior to it being inserted into the tree being built. The $filter_function is expected to return the value desired for inclusion into
the tree.
setArrayTree ($array_tree)
This method is used to set the $array_tree that our Tree::Simple heirarchy will be constructed from. It must be in the following form:
[
'Root', [
'Child1', [
'GrandChild1',
'GrandChild2'
],
'Child2'
]
]
Basically each element in the array is considered a node, unless it is an array reference, in which case it is interpreted as
containing the children of the node created from the previous element in the array.
The tree is validated prior being accepted, if it fails validation an execption will be thrown. The rules are as follows;
The array tree must not be empty.
It makes not sense to create a tree out of nothing, so it is assumed that this is a sign of something wrong.
All nodes of the array tree must not be array references.
The root node is validated against this in this function, but all subsequent nodes are checked as the tree is built. Any nodes
found to be array references are rejected and an exception is thrown. If you desire your node values to be array references, you
can use the node filtering mechanism to acheive this as the node is filtered after it is validated.
The array tree must be a single rooted tree.
If there is a second element in the array tree, it is assumed to be the children of the root, and therefore must be in the form of
an array reference.
visit ($tree)
This is the method that is used by Tree::Simple's "accept" method. It can also be used on its own, it requires the $tree argument to be
a Tree::Simple object (or derived from a Tree::Simple object), and will throw and exception otherwise.
BUGS
None that I am aware of. Of course, if you find a bug, let me know, and I will be sure to fix it.
CODE COVERAGE
See the CODE COVERAGE section in Tree::Simple::VisitorFactory for more inforamtion.
SEE ALSO
These Visitor classes are all subclasses of Tree::Simple::Visitor, which can be found in the Tree::Simple module, you should refer to that
module for more information.
AUTHOR
stevan little, <stevan@iinteractive.com>
COPYRIGHT AND LICENSE
Copyright 2004, 2005 by Infinity Interactive, Inc.
<http://www.iinteractive.com>
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2005-07-14 Tree::Simple::Visitor::FromNestedArray(3pm)