Yes, it is exactly what my example tying to do.
But I am looking for more general way to pass vars.
This way I should escape all special characters that shell would interpret to be passed to perl.
For example:
(I think the '-l' is not necessary or it is?)
This way it works, but it is uglee and hard to prepare and debug!
---------- Post updated at 01:11 PM ---------- Previous update was at 12:49 PM ----------
Just found some simplifying with the double-qoutes: it is possible to comby the perl command by multiple quoted strings:
This is usefull already, but it is still way around!
It should be a way to do it simpler!
What is the difference between defining the global variable through our and using use vars ?
Is the variable created using our goes beyond even package scope?
Thanks in Advance !!! (3 Replies)
Hi Folks,
The subject is my question:
Can we pass an array of strings from a Perl Program to a Shell Script?
Please provide some sample code.
Thanks
---------- Post updated at 11:52 PM ---------- Previous update was at 11:43 PM ----------
I got it.
Its here:... (0 Replies)
I have a perl script that opens a text file containing numbers on each line:
for example:
755993
755994
755995
755996
755997
755998
The perl script takes these numbers and store them as an array @raw_data, where I can access individual numbers by using $raw_data for the value 755993.... (2 Replies)
I am reading a file using While loop
while <FILE>
{
$_ = <FILE>;
process data...
}
I would like to quit reading the file once I encounter a String pattern. How do i do it.
is it
if (/SUMMARY/)
{
last;
}
I am having problems with uninitialized value in pattern... (1 Reply)
I have a shell script I want to run that will set environment variables based on the value of an input variable submitted when the shell script is called. For example:
$ mgenv.sh prod
This would set environment variables for prod
$ mgenv.sh test
This would set environment variables... (1 Reply)
I need shell 0r Perl script to read multiple input and do something and come out
example:
echo “ enter the host names separated by space “
read servers
foreach @servers
{ do
do something
done}
Here host names like host1 host2 host3 . . . . . . . so on
Please help me... (8 Replies)
My shell script generates a bunch of lines of text and passes this text as an argument to a perl script.
I'm able to do this, but for some reason newlines don't get recognized in the perl script and so the script just prints actual '\n' instead of carriage returning, otherwise everything gets... (3 Replies)
Hi,
I have a requirement as follows. Have 3 files. Need to match up the data in each one of them and sum up the data by a field and display it. example given below.
File 1 : Name, Emp id
File 2 : Empid, Subject,
File 3 : Subject, Score, Class
Match Emp id in File 1 and File 2 and then... (7 Replies)
I am trying to capture screenshots from a huge list of URLs. I am able to manually capture images of individual pages; that is, I simply run the following command to get a screenshot of Foo.com
$ python /path/to/screencapture.sh http://www.foo.com
I want to modify the script so that instead of... (2 Replies)
I am working on converting shell to Perl script. In shell we have built in function
trap
Do you know alternative in Perl or actually we don't need it?
Thanks for contribution (3 Replies)
Discussion started by: digioleg54
3 Replies
LEARN ABOUT DEBIAN
tree::simple::visitor::postordertraversal
Tree::Simple::Visitor::PostOrderTraversal(3pm) User Contributed Perl Documentation Tree::Simple::Visitor::PostOrderTraversal(3pm)NAME
Tree::Simple::Visitor::PostOrderTraversal - A Visitor for post-order traversal a Tree::Simple hierarchy
SYNOPSIS
use Tree::Simple::Visitor::PostOrderTraversal;
# create an visitor
my $visitor = Tree::Simple::Visitor::PostOrderTraversal->new();
# pass our visitor to the tree
$tree->accept($visitor);
# print our results
print join ", " => $visitor->getResults();
# this will print this:
# 1.1.1 1.1 1.2 1 2.1 2 3.1 3
# assuming your tree is like this:
# 1
# 1.1
# 1.1.1
# 1.2
# 2
# 2.1
# 3
# 3.1
DESCRIPTION
Post-order traversal is a variation of the depth-first traversal in which the sub-tree's are processed before the parent. It is another
alternative to Tree::Simple's "traverse" method which implements a depth-first, pre-order traversal.
METHODS
new There are no arguments to the constructor the object will be in its default state. You can use the "setNodeFilter" method to customize
its behavior.
includeTrunk ($boolean)
Based upon the value of $boolean, this will tell the visitor to include the trunk of the tree in the traversal as well.
setNodeFilter ($filter_function)
This method accepts a CODE reference as its $filter_function argument and throws an exception if it is not a code reference. This code
reference is used to filter the tree nodes as they are collected. This can be used to customize output, or to gather specific
information from a more complex tree node. The filter function should accept a single argument, which is the current Tree::Simple
object.
visit ($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.
getResults
This method returns the accumulated results of the application of the node filter to the tree.
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::PostOrderTraversal(3pm)