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• manipulate objects outside svg with javascript-function inside the svg

  - by Christian Benke

  Hello! I'm embedding a svg-graphic on my website and i'd like to manipulate the rest of the website with javascript-commands which are in the svg - though i'm not sure if this is possible. Let me elaborate: I've got a worldmap in svg, i want to click on a country and this click should run an ajax-call and load relevant information of this country into a div in the html site where the svg is embedded. "onclick="location.href='xxx'"" redirects to the respective site which is fine, but i'd prefer to run a js-function that fetches the site with ajax - but running a javascript-function in the svg only seems to work for functions and elements defined in the svg, not outside of it. Is it basically possible to manipulate anything outside the svg through a js-function in the svg? How? Regards Christian

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• ergonomics: what's better; trackball, ergonomic mouse or some other pointing device (a-la touchscree

  - by mauriciopastrana

  So I bit into the hype and recently purchased an apple wireless keyboard and that evil bar-of-soap thing apple makes for a mouse. Couple of hundred dollars later and this is where I begin to worry about RSI. Go figure. Don't get me wrong, this apple mouse is genius and looks pretty as hell, but my right wrist feels tired after a full day's worth of work, so i'm thinking of switching. Anyone out there use a trackball? is this worse? should I get a super-ergonomic mouse instead? I've seen mouse-trackball combos but am not sold, they still elicit the same end-finger behaviour detrimental for RSI, right? I also have a wrist-rest mousepad, but couldn't find one suitable for my keyboard. I've even considered having a small touchscreen where the mousepad should go, no mouse (or alternatively, a usb trackpad). Just looking for ideas, is the trackball better than the mouse? /mp

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• Facebook Canvas iFrame App - Authorizing users with new OAuth protocol

  - by Rick

  Hi, I'm developing a new Facebook Canvas application within an iFrame and trying to authorize users. The new OAuth api recommends I do a redirect to the following to authorize a user in my app: https://graph.facebook.com/oauth/authorize? client_id=...& redirect_uri=http://www.example.com/oauth_redirect However this produces a weird problem where a full Facebook page requesting permissions from the user is rendered within the iFrame itself (i.e. facebook within Facebook). Does anyone know how to solve this with the new OAuth API as I don't want to start using old REST API methods. Thanks, Rick

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• problem with hand tracking, opencv

  - by JP Talusan

  I am currently creating an opencv program that identifies a hand in an image and then gets the contour of the hand only, in order for us to get the center (x,y)m in pixels, of the hand. The problem is that whenever the image or video includes an arm or a face, we can't split or separate the hand from the contours of the arm or the face. We are currently using an HSV flesh colored histogram to get the contours of the hand. is there a way to separate them, i just need the hand. also if the picture includes only a hand and some part of the arm. How can we isolate the palm itself from the rest of the picture. all we need is a clear center of the palm. thanks in advanced.

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• UITableView like Contact App

  - by Matthias

  Hi, I try to create an UITableView similar to the Standard Contact App, when selecting a contact (i.e. grouped style). But how do I get some controls at the top or at the bottom of the cells, which scroll with the rest? In the Contact App you have at the top the picture together with the name and at the bottom three buttons. Are these just special customized Cells? Or can you have controls directly there? Thanks for your help! Regards Matthias

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• How can I implement an abstract singleton class in Java?

  - by Simon

  Here is my sample abstract singleton class: public abstract class A { protected static A instance; public static A getInstance() { return instance; } //...rest of my abstract methods... } And here is the concrete implementation: public class B extends A { private B() { } static { instance = new B(); } //...implementations of my abstract methods... } Unfortunately I can't get the static code in class B to execute, so the instance variable never gets set. I have tried this: Class c = B.class; A.getInstance() - returns null; and this ClassLoader.getSystemClassLoader().loadClass("B"); A.getInstance() - return null; Running both these in the eclipse debugger the static code never gets executed. The only way I could find to get the static code executed is to change the accessibility on B's constructor to public, and to call it. I'm using sun-java6-jre on Ubuntu 32bit to run these tests.

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• How to run batched WCF service calls in Silverlight BackgroundWorker

  - by Simon

  Is there any existing plumbing to run WCF calls in batches in a BackgroundWorker? Obviously since all Silverlight WCF calls are async - if I run them all in a backgroundworker they will all return instantly. I just don't want to implement a nasty hack if theres a nice way to run service calls and collect the results. Doesnt matter what order they are done in All operations are independent I'd like to have no more than 5 items running at once Edit: i've also noticed (when using Fiddler) that no more than about 7 calls are able to be sent at any one time. Even when running out-of-browser this limit applies. Is this due to my default browser settings - or configurable also. obviously its a poor man's solution (and not suitable for what i want) but something I'll probably need to take account of to make sure the rest of my app remains responsive if i'm running this as a background task and don't want it using up all my connections.

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• Is it possible to reset NSURLConnection after providing credentials?

  - by John

  I am calling a REST service that requires basic auth and I respond to the didReceiveAuthenticationChallenge delegate OK NSURLCredential *credential = [[NSURLCredential alloc] initWithUser:self.user password:self.password persistence:NSURLCredentialPersistenceForSession]; [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge]; [credential release]; The Credentials are valid for the Session but I would like for my App to be able to switch between servers and therefore need to "reset" the Session so it asks again for a challenge. I can of course try the option of not storing the credentials for the Session and supply them for each call but this does not seem like a good idea. Any ideas would be appreciated!

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• Resharper and ViEmu Keybindings ( and Visual Assist )

  - by Keith Nicholas

  With ViEmu you really need to unbind a lot of resharpers keybindings to make it work well. Does anyone have what they think is a good set of keybindings that work well for resharper when using ViEmu? What I'm doing at the moment using the Visual Studio bindings from Resharper. Toasting all the conflicting ones with ViEmu, and then just driving the rest through the menu modifiers ( Alt-R keyboard shortcut for the menu item ). I also do the same with Visual Assist shortcuts ( for C++ ) if anyones got any tips and tricks for ViEmu / Resharper or Visual Assist working together well I'd most apprciate it!

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• Debugging cucumber/gem dependencies

  - by mobmad

  How do you debug and fix gem errors like below? Although the below case is very specific, I'm also looking for solution to related problems like "gem already activated [...]", and resources to gem management/debugging. mycomputer:projectfolder username$ cucumber features Using the default profile... WARNING: No DRb server is running. Running features locally: /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010. Use #requirement can't activate , already activated ruby-hmac-0.4.0 (Gem::Exception) /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:101:in `specification' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/locator.rb:81:in `plugins' /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `inject' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/locator.rb:81:in `each' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/locator.rb:81:in `inject' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/locator.rb:81:in `plugins' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:109:in `locate_plugins' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:108:in `map' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:108:in `locate_plugins' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:32:in `all_plugins' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:22:in `plugins' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/rails/plugin/loader.rb:53:in `add_plugin_load_paths' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/initializer.rb:294:in `add_plugin_load_paths' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/initializer.rb:136:in `process' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `send' /Users/username/.gem/ruby/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `run' /Users/username/Documents/projectfolder.0/sites/projectfolder/config/environment.rb:9 /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require' /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `polyglot_original_require' /Library/Ruby/Gems/1.8/gems/polyglot-0.2.9/lib/polyglot.rb:70:in `require' ./features/support/env.rb:12 /Library/Ruby/Gems/1.8/gems/spork-0.7.5/lib/spork.rb:23:in `prefork' ./features/support/env.rb:9 /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require' /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `polyglot_original_require' /Library/Ruby/Gems/1.8/gems/polyglot-0.2.9/lib/polyglot.rb:70:in `require' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/rb_support/rb_language.rb:124:in `load_code_file' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/step_mother.rb:84:in `load_code_file' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/step_mother.rb:76:in `load_code_files' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/step_mother.rb:75:in `each' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/step_mother.rb:75:in `load_code_files' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/cli/main.rb:47:in `execute!' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/../lib/cucumber/cli/main.rb:24:in `execute' /Library/Ruby/Gems/1.8/gems/cucumber-0.4.4/bin/cucumber:8 /usr/bin/cucumber:19:in `load' /usr/bin/cucumber:19 And this is the output from gem list actionmailer (2.3.5, 2.2.2, 1.3.6) actionpack (2.3.5, 2.2.2, 1.13.6) actionwebservice (1.2.6) activerecord (2.3.5, 2.2.2, 1.15.6) activeresource (2.3.5, 2.2.2) activesupport (2.3.5, 2.2.2, 1.4.4) acts_as_ferret (0.4.4, 0.4.3) adamwiggins-rest-client (1.0.4) aslakhellesoy-webrat (0.4.4.1) aslakjo-comatose (2.0.5.12) authlogic (2.1.3) authlogic-oid (1.0.4) builder (2.1.2) capistrano (2.5.17, 2.5.2) cgi_multipart_eof_fix (2.5.0) configuration (1.1.0) cucumber (0.4.4) cucumber-rails (0.3.0) daemons (1.0.10) database_cleaner (0.5.0) diff-lcs (1.1.2) dnssd (1.3.1, 0.6.0) fakeweb (1.2.8) fastthread (1.0.7, 1.0.1) fcgi (0.8.8, 0.8.7) ferret (0.11.6) gem_plugin (0.2.3) gemcutter (0.4.1) heroku (1.8.0) highline (1.5.2, 1.5.0) hoe (2.5.0) hpricot (0.8.2, 0.6.164) json (1.2.2) json_pure (1.2.2) launchy (0.3.5) libxml-ruby (1.1.3, 1.1.2) linecache (0.43) log4r (1.1.5) mime-types (1.16) mongrel (1.1.5) mysql (2.8.1) needle (1.3.0) net-scp (1.0.2, 1.0.1) net-sftp (2.0.4, 2.0.1, 1.1.1) net-ssh (2.0.20, 2.0.4, 1.1.4) net-ssh-gateway (1.0.1, 1.0.0) nifty-generators (0.3.2) nokogiri (1.4.1) oauth (0.3.6) oniguruma (1.1.0) plist (3.1.0) polyglot (0.2.9) rack (1.1.0, 1.0.1) rack-test (0.5.3) rails (2.3.5, 2.2.2, 1.2.6) rake (0.8.7, 0.8.3) RedCloth (4.2.2, 4.1.1) rest-client (1.4.0) rspec (1.3.0) rspec-rails (1.3.2) ruby-activeldap (0.8.3.1) ruby-debug-base (0.10.3) ruby-debug-ide (0.4.9) ruby-hmac (0.4.0) ruby-net-ldap (0.0.4) ruby-openid (2.1.7, 2.1.2) ruby-yadis (0.3.4) rubyforge (2.0.4) rubygems-update (1.3.6) rubynode (0.1.5) rubyzip (0.9.4) sanitize (1.2.0) sequel (3.0.0) sinatra (0.9.2) spork (0.7.5) sqlite3-ruby (1.2.5, 1.2.4) taps (0.2.26) term-ansicolor (1.0.4) termios (0.9.4) textpow (0.10.1) thor (0.9.9) treetop (1.4.2) twitter4r (0.3.2, 0.3.1) ultraviolet (0.10.2) webrat (0.7.0) will_paginate (2.3.12) xmpp4r (0.5, 0.4)

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• External SWF to External SWF Timeline Communication, Flash, AS2

  - by jecca411

  Flash CS4, AS2 I have made an interactive tour. It can be seen here: http://www.92YTribeca.org/Tour click on the bottom image Each of the 4 sections are external swf and loaded on level 1. I want a button on one swf (floorplan) to load another swf (facility rentals) AND pinpoint a specific frame on the swf's timeline. I have tried many different ways, all end up loading the swf at the first frame and ignore the rest of the code talking about the timeline. I know I could split this swf up into more external swfs and get the result I want, but I would rather use code if I can. Is what I want to do possible? If so, how do I write the code? Thanks!

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• UDDI Best Practices

  - by Andrew Cripps

  My organisation is getting into the SOA world (a bit late, but that's what it's like here!) and we're looking into the ESB Toolkit 2.0 (we already have BizTalk Server 2009). We're keen on implementing UDDI (specifically, the UDDI Services v3.0 that ships with BTS 2009), but we're low on actual UDDI experience. We want to manage the ever-burgeoning number of web services we have across all our environments. What are the best practices for implementing UDDI? For example:- Would you implement a single highly-available resilient UDDI server that hosts all services and bindings, including test environment versions? Or would you implement separate UDDI repositories for test and production environments? I'm aware of the Oasis Technical Note v2.0 on WSDL and UDDI, but does anyone actually implement that? I.e. the abstract parts of the WSDL as tModels, the implementation parts of the WSDL as bindings? Would you go to the effort of capturing non-web service endpoints in UDDI, or just use it for WSDL? What are the "gotchas"?

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• Etiquette for refactoring other people's sourcecode?

  - by Prutswonder

  Our team of software developers consists of a bunch of experienced programmers with a variety of programming styles and preferences. We do not have standards for everything, just the bare necessities to prevent total chaos. Recently, I bumped into some refactoring done by a colleague. My code looked somewhat like this: public Person CreateNewPerson(string firstName, string lastName) { var person = new Person() { FirstName = firstName, LastName = lastName }; return person; } Which was refactored to this: public Person CreateNewPerson (string firstName, string lastName) { Person person = new Person (); person.FirstName = firstName; person.LastName = lastName; return person; } Just because my colleague needed to update some other method in one of the classes I wrote, he also "refactored" the method above. For the record, he's one of those developers that despises syntactic sugar and uses a different bracket placement/identation scheme than the rest of us. My question is: What is the (C#) programmer's etiquette for refactoring other people's sourcecode (both semantic and syntactic)?

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• XPath doesn't work as desired in C#

  - by Nick Brooks

  My code doesn't return the node XmlDocument xml = new XmlDocument(); xml.InnerXml = text; XmlNode node_ = xml.SelectSingleNode(node); return node_.InnerText; // node_ = null !!!!!!!!!!!!!!!!!!! I'm pretty sure my XML and Xpath are correct My Xpath : /ItemLookupResponse/OperationRequest/RequestId' My XML : <?xml version="1.0"?> <ItemLookupResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2005-10-05"> <OperationRequest> <RequestId>xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxx</RequestId> .......(the rest of the xml is irrelevant).......... The node my XPath returns is always null for some reason. Can someone help?

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• In C, is it possible do free only an array first ou last position?

  - by user354959

  Hi there! I've an array, but I don't need its first (or last) position. So I point a new variable to the rest of the array, but I should free the array first/last position. For instance: p = read_csv_file(); q = p + 1; // I don't need the first CSV file field // Here I'd like to free only the first position of p return q; Otherwise I've to memcpy the array to other variable, excluding the first position, and then free the original array. Like this: p = read_csv_file(); q = (int*) malloc(sizeof(int) * (SOME_SIZE - 1)); memcpy(q, p+1, sizeof(int) * (SOME_SIZE - 1)); free(p); return q; But then I'll have the overhead of copying all the array. Is this possible to only free a single position of an array?

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• access following entry in a form_for, and switch a value between two entry of my DB

  - by Sylario

  I am displaying a list of articles. I sort my articles by the param order, and i want, when displaying the list of article to be able to "move" them up or down. In php i do everything with a for browsing my array of results and inside the for i go to the next index to find where i am in the list, and with wich other article i must swap my order. I can do that in the script displaying the edit page and then in the script executing the update. In rails i have only my form_for in my erb. How can i : Know if my entry is the last one or the first one(display only V for the first, ^ for the last and V^ for the rest) Update my DB entry by switching the order value between the article that i want to lower, raise, and the one he is taking the place.

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• chat application: pubsubhubbub vs xmpp

  - by sofia

  I'm unsure on the best stack to build a chat application. Currently I'm thinking of two main options: facebook tornado cons: does not use the main chat protocol xmpp but pubsubhubbub pros: i really like its simplicity for development (webserver + webframework); pubsubhubbub also seems simpler as a protocol than xmpp; and i know python xmpp + bosch, punjab, ejabberd cons: don't know erlang; overall seems a bit harder to develop pros: uses xmpp protocol The chat app will need to have the following: Private messages Public rooms Private rooms Chat history for rooms (not forever, just the last n messages) html embedding url to chat room Both options seem scalable so that's not really my worry (we're thinking of running the app in amazon's ec2 as well). I know there's a project that builds a xmpp server using tornado but it's not ready for production use and our deadline isn't that big. Basically my main worry is ease of development vs somehow regretting later using pubsubhubbub to develop a chat app but I read somewhere that PubSubHubbub might eventually replace XMPP as REST replaced SOAP - so what do you think?

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• Facebook Like button working but not sharing

  - by Victor P

  Im using the XFBML version of the Like button but the "Share it" box with the space to leave a comment doesn't show up after clicking "Recommend". The rest works fine. Im using this code: <fb:like href="www.google.cl" width="300" action="recommend" font="lucida grande"></fb:like> And, in the end of the page </body> <div id="fb-root"></div> <script src="http://connect.facebook.net/en_US/all.js"></script> <script> FB.init({appId: '1234567890', status: true, cookie: true, xfbml: true}); FB.Event.subscribe('auth.sessionChange', function(response) { if (response.session) { // A user has logged in, and a new cookie has been saved } else { // The user has logged out, and the cookie has been cleared } }); </script> </html> Do you know what is happening? Any advice is warmly received. Thanks

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• Callbacks in Thrift Asynchronous Functions?

  - by Roberto Aloi

  Hi all, In Thrift it is possible to use the oneway modifier to specify a call as asynchronous. Apparently, it's not possible to define a callback, though, to be executed when the execution of the function is completed. It seems that the only possibility I have is to give my Thrift client (PHP) some "server" capabilities, so that, when the heavy computation is completed on the server side, I can send a notification to it. This means that I should have a new .thrift file, with new definitions, new services and all the rest and that I should generate php-server side code with Thrift. Even if this is feasible, it looks like an overkill to me and I'm wondering if there's a more clever way to implement the callback. Looking forward for some feedback from you, guys.

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• I don't want to convert solution files when switching from Visual Studio 2008-2010. How?

  - by Vibhu

  I just got a new work laptop. I want to run Visual Studio 2010 Beta 2. However, the rest of my team is using Visual Studio 2008 with .Net 3.5, and I don't want to check-in the solution migration code into TFS. In fact, I don't want any migration code at all - I just want to use the old .NET Framework with our old solution, with the new IDE. How can I do this? Is this possible? Thank you!

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• Difference of HTTP Components, Restlet, Apache Mina and Netty

  - by dexter

  I used HTTPComponents to implement a custom web server that access SQLite database. Requests are sent via TCP/IP and I am using REST concepts. By the way my frontend is HTML/jQuery. I know it will be a lot easier if I'll just create a servlet but I am restricted to just using apache http server. I really don't get good performance in using HTTP Components. Any suggestions please. Thanks in advance.

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• CSS Frameworks like 960 and Blueprint?

  - by Dean J

  This is at the framework level, not dealing directly with CSS, so posting to SO. I just learned about the existence of CSS frameworks. 960 Grid System seems pretty awesome, then I found Blueprint, which seems to do the same thing and more. Is there a better word than "framework" to categorize this? Are there any other products in this category? In response to one of the comments http://stackoverflow.com/questions/1483565/link-to-a-site-designed-using-a-css-framework-blueprint-960-etc, "how many example frameworks do you want? he just listed two of them.", I'd love to have more than two examples, unless those are the only two in the running. Blueprint, which is "the original CSS framework" 960 Grid System, which is a tool to have a grid underlying your screen. YUI 2: Grids, similar to 960? The rest of YUI is more similar to JQuery?

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• Automating the Choose a digital certificate dialog

  - by MoMo

  I am using WatiN (2.0.10.928) with C# and Visual Studio 2008 to test a SSL secured website that requires a certificate. When you navigate to the homepage a "Choose a digital certificate" dialog is displayed and requires that you select a valid certificate and click the 'OK' button. I'm looking for a way to automate the certificate selection so that every time a new test or fixture is executed (and my browser restarts) I don't have to manually interfere with the automated test and select the certificate. I've tried using various WatiN Dialog Handler classes and even looked into using the Win32 API to automate this but haven't had much luck. I finally found a solution but its adds another dependency to the solution (a third party library called AutoIT). Since this solution isn't ideal but does work and is the best I could find, I will post the solution and mark it as the answer but I am still looking for an 'out of the box' WatiN solution that is more consistent with the rest of my code and test fixtures. Thanks for your responses!

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• PHP: go back to the start of loop using a sort of 'break' ?

  - by matthy

  Hi i have a loop and i was wondering if there was a command that you can jump back to the start of the loop and ignore the rest of the code in the loop example: for ($index = 0; $index < 10; $index++) { if ($index == 6) that command to go the start of the loop echo "$index, "; } should output 1,2,3,4,5,7,8,9 and skip the six sort of same result as for ($index = 0; $index < 10; $index++) { if ($index != 6) echo "$index, "; } is there a command for that? thanks, matthy

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• Changing One Tag Name in an XML File Using XSLT

  - by AlbertoPL

  Is it possible for me to have a conditional in XSLT such that I find and replace only the FIRST tag of a particular tag name? For example, I have an XML file with many tags. I would like to replace the first of these tags with . The rest should be left alone. How would I do this in my transform? What I currently have is this: <xsl:template match="title"> <PageTitle> <xsl:apply-templates /> </PageTitle> </xsl:template> which finds all tags and replaces them with PageTitle. Any help would be greatly appreciated!

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