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• How do I insert a row with Perl's Net::Cassandra::Easy?

  - by knorv

  When using the Perl module Net::Cassandra::Easy to interface with Cassandra I use the following code to read colums col[123] from rows row[123] in column-family Standard1: my $cassandra = Net::Cassandra::Easy->new(keyspace => 'Keyspace1', server => 'localhost'); $cassandra->connect(); my $result = $cassandra->get(['row1', 'row2', 'row3'], family => 'Standard1', byname => ['col1', 'col2', 'col3']); This works as expected. However, when trying to insert row row1 with .. $result = $cassandra->mutate(['row1'], family => 'Standard1', insertions => { "col1" => "Value to set." }); .. I get the error message Can't use string ("0") as a SCALAR ref while "strict refs" in use at .../Net/GenThrift/Thrift/BinaryProtocol.pm line 376. What am I doing wrong?

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• Long-running transactions structured approach

  - by disown

  I'm looking for a structured approach to long-running (hours or more) transactions. As mentioned here, these type of interactions are usually handled by optimistic locking and manual merge strategies. It would be very handy to have some more structured approach to this type of problem using standard transactions. Various long-running interactions such as user registration, order confirmation etc. all have transaction-like semantics, and it is both error-prone and tedious to invent your own fragile manual roll-back and/or time-out/clean-up strategies. Taking a RDBMS as an example, I realize that it would be a major performance cost associated with keeping all the transactions open. As an alternative, I could imagine having a database supporting two isolation levels/strategies simultaneously, one for short-running and one for long-running conversations. Long-running conversations could then for instance have more strict limitations on data access to facilitate them taking more time (read-only semantics on some data, optimistic locking semantics etc). Are there any solutions which could do something similar?

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• Is it possible to stream a file to and from servers without holding the data in ram?

  - by Chris Denman

  Hi everyone! PHP question (new to PHP after 10 years of Perl, arrggghhh!). I have a 100mb file that I want to send to another server. I have managed to read the file in and "post" it without curl (cannot use curl for this app). Everything is working fine on smaller files. However, with the larger files, PHP complains about not being able to allocate memory. Is there a way to open a file, line by line, and send it as a post ALSO line by line? This way nothing is held in ram thus preventing my errors and getting around strict limitations. Chris

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• Visual Studio 2008 macro only works from the Macro IDE, not the Macro Explorer

  - by Cat

  Edit: Creating a new module in the same VSMacros project fixed the problem. The following macro only works if I open the Macro IDE from Visual Studio and run the macro from there. It'd be much more useful if I could just right click the macro from the Macro Explorer from my Visual Studio instance. I must be doing something obviously wrong, but I've never worked with VS macros before. The MessageBox does not appear in either case. Option Strict Off Option Explicit Off Imports System Imports EnvDTE Imports EnvDTE80 Imports EnvDTE90 Imports System.Diagnostics Imports System.Security.Principal Imports System.Windows.Forms Public Module AttachToSdtProcess Sub AttachToSdtProcess() Try 'If MessageBox.Show("Attach to SDT.exe", "Caption", _ ' MessageBoxButtons.OKCancel) = DialogResult.Cancel Then 'Return 'End If Dim dbg2 As EnvDTE80.Debugger2 = DTE.Debugger Dim trans As EnvDTE80.Transport = dbg2.Transports.Item("Default") Dim compName As String = WindowsIdentity.GetCurrent().Name compName = compName.Substring(0, compName.IndexOf("\")) Dim proc2 As EnvDTE80.Process2 = _ dbg2.GetProcesses(trans, compName).Item("TheExecutable.exe") If proc2 Is Nothing Then MessageBox.Show("Could not find TheExecutable.exe") End If proc2.Attach2(dbgeng) Catch ex As System.Exception MsgBox(ex.Message) End Try End Sub End Module

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• Method signature Vs function prototype

  - by Maroloccio

  A formal definition of the two? Current Wiki articles denote their different contexts and applications, such as internal type signature "strings" in Java VMs (1) and C/C++ function prototypes informing compilers of upcoming method definitions (2) but... 1) http://en.wikipedia.org/wiki/Type_signature 2) http://en.wikipedia.org/wiki/Function_prototype ... where to look for a definition which clearly and formally distinguished one from the other? There is literature using the words prototype and signature almost interchangeably yet other uses appear strict and consistent, if language-specific. Background: I am writing documentation for a sample compiler written for a University project.

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• VS2010 converted project invalid reference

  - by Nathan

  Opening a .Net 2 project in VS2010 it converts the project without any issues BUT when I attempt to build it fails. The reason is that in VS2005 a reference was added to System.Web.Extensions which is a .Net 3.5 assembly. Now VS2005 never complained at this and quite happily worked but VS2010 is far more strict and won't allow it. I've tried changing the targeted framework to .Net 3.5 but I get another situation there where the web page is never displayed, it simply hangs not even getting to Applicatin_OnStart. Any help either on adding the reference with .Net 2 as target framework (prefered option for time) or getting the .Net 3.5 version to work would be greatly appreciated.

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• PHP & HTML Purifier error: Undefined variable: dirty_html

  - by TaG

  I'm trying to install HTML Purifier http://htmlpurifier.org/ but I get the following error Undefined variable: dirty_html. I was wondering how can I fix this problem? Here is the PHP code. require_once '../../htmlpurifier/library/HTMLPurifier.auto.php'; $config = HTMLPurifier_Config::createDefault(); $config->set('Core.Encoding', 'UTF-8'); // replace with your encoding $config->set('HTML.Doctype', 'XHTML 1.0 Strict'); // replace with your doctype $purifier = new HTMLPurifier($config); $clean_html = $purifier->purify($dirty_html);

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• DTO or Domain Model Object in the View Layer?

  - by smayers81

  I know this is probably an age-old question, but what is the better practice? Using a domain model object throughout all layers of your application, and even binding values directly to them on the JSP (I'm using JSF). Or convert a domain model object into a DTO in the DAO or Service layer and send a lightweight DTO to the presentation layer. I have been told it makes no sense to use DTOs because changes to the database will result in changes to all your DTOs whereas using Model Objects everywhere will just require changes to the affected model object. However, the ease of use and the lightweight nature of DTOs seems to outweigh that. I should note that my app uses Hibernate Model Objects AND uses its own custom-created model objects (meaning not bound to any DB session, always detached). Is either of the above scenarios more beneficial to a strict Model Object pattern? Using Hibernate has been a huge PITA with regards to things like Lazy Initialization Exceptions.

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• missing event when using modules with requirejs

  - by ali haider

  I had javascript code in a single JS file that was working fine (using XHR/AJAX). When I split it up into separate modules in a requirejs application, I do not seem to get a handle on the event object & it shows up as undefined (testing in firefox 29.0.1). Calling module: ajax.onreadystatechange = new ajaxResponse().handleAjaxResponse(e); ajaxResponse define(["require", './url/urlCommon'], function(require, urlCommon) { 'use strict'; var ajaxResponse = function() { var ajax = null; // e = event || window.event; this.handleAjaxResponse = function() { if (typeof event === 'undefined') { var event = event || window.event; } console.log('e is now:' + typeof e); I also do not have a handle on the event in the handleAjaxResponse method (error: undefined). Any thoughts on what I need to do to troubleshoot/fix this will be greatly appreciated.

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• Built in method to encode ampersands in urls returned from Url.Action?

  - by Blegger

  I am using Url.Action to generate a URL with two query parameters on a site that has a doctype of XHTML strict. Url.Action("ActionName", "ControllerName", new { paramA="1" paramB="2" }) generates: /ControllerName/ActionName/?paramA=1&paramB=2 but I need it to generate the url with the ampersand escaped: /ControllerName/ActionName/?paramA=1&amp;paramB=2 The fact that Url.Action is returning the URL with the ampersand not escaped breaks my HTML validation. My current solution is to just manually replace ampersand in the URL returned from Url.Action with an escaped ampersand. Is there a built in or better solution to this problem?

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• Comparing datafeeds from different networks (Affiliate Marketing)

  - by Logistetica

  Hi, I am working on integrating affiliate sales into few existing sites. We are using a few merchants who work via different networks (cj, shareasale, linkshare, avantlink). Now my observation is that all these networks provide data feeds in different formats. But that's not a big problem. My main concern is actually merchants using different titles on same products. I don't want to run into these situations: a) two listings of the SAME product from N merchants (if titles are just a bit different) b) one listing of N different products from merchants (if we don't use strict comparison algorithm) We want to automate everything as much as possible, want to avoid operators scanning listings under question all the time. How is this problem typically handled?

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• What's the best method to be overloaded in ViewPage for inserting some script to all ViewPage?

  - by Soul_Master

  I want to insert some script that is required for my JavaScript library in all view pages. I know that Asp.net MVC is built on Asp.net Framework. Therefore, I can override many methods in “System.Web.UI.Page” class that is a parent of “System.Web.Mvc.ViewPage” class. Nevertheless, I can do it by override Render method but it makes all view pages be invalid for XHTML 1.0 strict. Correct JavaScript must be placed in header tag of HTML document. public class ViewPage<TModel> : ViewPage where TModel : class { protected override void Render(System.Web.UI.HtmlTextWriter writer) { base.Render(writer); writer.Write("<script type='text/javascript>applicationPath = window.applicationPath = 'somePath';</script>"); } } Thanks, PS. I know I can create some code in each master page for doing that. However, it is a quite complicate for other developers to start using my JavaScript source code.

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• How to Insert a sub string to each line in perl

  - by Nano HE

  Hi, My code as below, How to remove the blank after add hello. to each lines. #!C:\Perl\bin\perl.exe use strict; use warnings; use Data::Dumper; my $fh = \*DATA; #my($line) = $_; while(my $line = <$fh>) { print "Hello.".$line; chomp($line); } __DATA__ Member Information id = 0 name = "tom" age = "20" Output: D:\learning\perl>test.pl Hello.Member Information Hello. id = 0 # i want to remove the blank between Hello. and id Hello. name = "tom" # same as above Hello. age = "20" # same D:\learning\perl>

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• XML::LibXML: How to write a xpath with qualified name?

  - by sid_com

  I've found this on http://www.perlmonks.org/?node_id=606909 looking by qualified name ... In this case you can call findnodes method on any node, you don't need the XML::LibXML::XPathContext with its prefix = namespace mapping: $doc-findnodes('///info/fooTransaction/transactionDetail/[name() = "histFile:transactionSummary"]/*'); In which way I have to edit my xpath to get my script working without XPathContext? #!/usr/bin/env perl use warnings; use strict; use 5.012; use XML::LibXML; my $parser = XML::LibXML->new; $parser->recover_silently( 1 ); my $doc = $parser->parse_file( 'http://www.heise.de/' ); my $xc = XML::LibXML::XPathContext->new( $doc->getDocumentElement ); $xc->registerNs( 'xmlns', 'http://www.w3.org/1999/xhtml' ); my $nodes = $xc->findnodes( '//xmlns:h2/xmlns:a' ); for my $node ( $nodes->get_nodelist ) { say $_->getName, '=', $_->getValue for $node->attributes; }

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• Perl redirect to PHP page

  - by sea_1987

  Hi There, I am working with a site that uses an outside source to work with payment transactions, one of the prerequisites is that on success a CGI script is called. What I am wanting to know is it possible to do a redirect to a PHP page with the CGI script and have the PHP detect that it has been loaded via a Perl redirect, I currently have this is in my perl. #!/usr/bin/perl # # fixedredir.cgi use strict; use warnings; my $URL = "http://www.example.com/"; Location: $URL;

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• Pretty output question

  - by sid_com

  Hello! #!/usr/bin/env perl use warnings; use strict; my $text = 'hello ' x 30; printf "%-20s : %s\n", 'very important text', $text; the output of this script looks more ore less like this: very important text : hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello hello ... but I would like an output like this: very important text: hello hello hello hello hello hello hello hello hello hello hello hello ... How could I change my script to reach my goal?

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• Perl, evaluate string lazily

  - by Mike

  Consider the following Perl code. #!/usr/bin/perl use strict; use warnings; $b="1"; my $a="${b}"; $b="2"; print $a; The script obviously outputs 1. I would like it to be whatever the current value of $b is. What would be the smartest way in Perl to achieve lazy evaluation like this? I would like the ${b} to remain "unreplaced" until $a is needed.

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• Why does a module compile by itself but fail when used from elsewhere?

  - by chrisribe

  I have a Perl module that appears to compile fine by itself, but is causing other programs to fail compilation when it is included: me@host:~/code $ perl -c -Imodules modules/Rebat/Store.pm modules/Rebat/Store.pm syntax OK me@host:~/code $ perl -c -Imodules bin/rebat-report-status Attempt to reload Rebat/Store.pm aborted Compilation failed in require at bin/rebat-report-status line 4. BEGIN failed--compilation aborted at bin/rebat-report-status line 4. The first few lines of rebat-report-status are ... 3 use Rebat; 4 use Rebat::Store; 5 use strict; ...

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• HTML/CSS - Website Help.

  - by gabeaudick

  I'm trying to build my first website from scratch. I mocked up the design in Photoshop, and have been trying to convert into code for a few hours. But I haven't got far. In fact, I'm stuck on the header's navigation bar. It looks right, but it doesn't work. I'm using an unordered-inline list, and trying to link different rectangles in the header. I can't click on anything in the header, though. The code for the html and css files, and a mockup of the header, are below. Any advice on why the header bar isn't working would be much appreciated. Here's a link to the image: http://rookery9.aviary.com.s3.amazonaws.com/3961000/3961027_eb89_625x625.jpg *Ideally, you would be able to click on either "". home.html: <!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head> <!-- Title --> <title>I am Gabe Audick.</title> <!-- Meta --> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="Author" content="Gabe Audick" /> <meta name="Copyright" content="Gabe Audick" /> <!-- Stylesheets --> <link href="style.css" media="screen" rel="stylesheet" type="text/css" /> <!-- RSS --> <link rel="alternate" type="application/rss+xml" title="gabeaudick RSS" href="http://feeds.feedburner.com/gabeaudick" /> </head> <body> <!-- Navigation Bar --> <div id="wrap"> <div id="header"> <ul> <li><a href="#">Previous</a></li> <li><a href="#">Home</a></li> <li><a href="#">Next</a></li> </ul> </div> </div> <!-- END --> <!-- Google Analytics --> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-5899101-4']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script> <!-- End of Google Analytics --> </body> </html> style.css: * { margin: 0; padding: 0; } body { background-color: #fff; color: #000; font-size: 14px; font-family: 'Century Gothic', Helvetica, sans-serif; position: relative; } #wrap { background-color: #000; color: #fbead; height: 26px; width: 100%; } #header { background: url(./images/home.gif) center no-repeat #000; height: 26px; } #header ul li{ float:left; list-style-type:none; margin-right:12px; text-indent:-9999px; } #header li a:link, #header li a:visited{ outline:none; display:block; height:26px; text-indent:-9999px; }

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• How can I use Perl and RRD to plot ping times?

  - by ChrisMuench

  I'm trying to do my first rrd graph through Perl. I have tried RRD::Simple and rrds and just can't get either one to work. Here's what I have so far: use strict; use RRD::Simple (); # Create an interface object my $rrd = RRD::Simple-new( file = "server.rrd" ); # Put some arbitary data values in the RRD file for the same # 3 data sources called bytesIn, bytesOut and faultsPerSec. $rrd-create( EqSearch = "DERIVE", MfSearch = "DERIVE", EQCostBasis = "DERIVE", MFCostBasis = "DERIVE" ); $rrd-update( EqSearch = 2, MfSearch = 3, EQCostBasis = 10, MFCostBasis = 15 ); # Generate graphs: # /var/tmp/myfile-daily.png, /var/tmp/myfile-weekly.png # /var/tmp/myfile-monthly.png, /var/tmp/myfile-annual.png my %rtn = $rrd-graph( destination = "/Users/cmuench/Documents/Code/perl", title = "Server A", vertical_label = "", interlaced = "", periods = [qw(hour)] );

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• Is there an easy way to get a list of all successful captures from a regex pre-5.10?

  - by Chas. Owens

  I know the right way to do this if I have Perl 5.10 is to use named captures and values %+, but in Perl 5.8.9 and how can I get a list of successful captures? I have come up with two methods that are both just terrible: #you need to list each possible match my @captures = grep { defined } ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16); and #ew, I turned on symbolic references { no strict 'refs'; my @captures = map { defined $+[$_] ? $$_ : () } 1 .. $#+; } There is a third option I have found involving (?{}), but it requires global variables (because the closure happens at compile time) and takes the regex from reasonably clear to ungodly mess. The only alternative I have found is to capture the whole match and then use another set of regexes to get the values I want (actually I build the first regex out of the other regexes because there is no good reason to duplicate the logic).

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• EF 4 - associations with keys that dont match

  - by Steve Ward

  We're using POCOs and have 2 entities: Item and ItemContact. There are 1 or more contacts per item. Item has as a primary key: ItemID LanguageCode ItemContact has: ItemID ContactID We cant add an association with a referrential constraint as they have differing keys. There isnt a strict primary / foreign key as languageCode isnt in ItemContact and ContactID isnt in Item. How can we go about mapping this with an association for contacts for an item if there isnt a direct link but I still want to see the contacts for an item? One of the entities originates in a database view so it is not possible to add foreign keys to the database Thanks Stephen Ward

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• Adding LDAP OU using Net::LDAP

  - by lupindeterd

  What is the correct syntax of adding an OU using Net::LDAP, I tried the following: #!/usr/bin/perl -w use 5.10.1; use strict; use Net::LDAP; use Data::Dumper; my $ldap = Net::LDAP->new("192.168.183.2") or die "$@"; my $mesg = $ldap->bind( "cn=admin,dc=lab,dc=net", password => 'xxx' ); $mesg = $ldap->add( "ou=Users,dc=lab,dc=net", attrs => [ 'ou' => 'dc=Users', 'objectClass' => [ 'top', 'organizationalUnit' ] ] ); say $mesg->error; say $mesg->code; And got the following error: value of naming attribute 'ou' is not present in entry 64 However using the ldapmodify command line, and using this following ldif, works: dn: ou=Users,dc=lab,dc=net changetype: add objectclass: top objectclass: organizationalUnit ou: Users

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• Handling changes in an interface shared across multiple solutions?

  - by Anthony Mastrean

  Our "main" solution is the development code: shared libraries, services, UI projects, etc. The other solution is an integration and automated tests solution. It references several of the development projects. The reason it is separate is to avoid interference with the development solution's unit test VSMDI file. And to allow us to play with different execution methods (other test runners, like Gallio or StoryTeller) without interfering with the development solution. Recently, an interface changed in the development solution, one of our test mocks implemented that interface. But, it was not updated because there was no warning at compile time because it was in another solution. This broke our CI build. Does anyone have a similar setup? How do you handle these issues, do you follow a strict procedure or is there some kind of technical answer?

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• How to maintain the HTML semantics when HTML is used for drawing diagrams (like organizational chart

  - by Vijay

  I have created an organizational chart using ASP.NET on web page. The web page is using strict DOCTYPE and following W3C standards. The chart has a hierarchical layout decided by the manager field in the table that contains employees in the organization. The chart layout has nodes with employee image and other details like job title, department and contact details. Nodes are beautifully arranged and connected by lines (only horizontal or vertical or both). A lot of DIV elements are used (to avoid table) for connecting lines and arranging the chart properly. As suggested by my friend, using DIVs for connecting lines in the chart is semantically wrong. Is there a way by which I can make it semantically correct? Or, am I using HTML for the wrong purpose?

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