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  • How to check if a given Regex is valid?

    - by Philipp Andre
    Hi folks, I have a little program allowing users to type-in some regular expressions. afterwards i like to check if this input is a valid regex or not. I'm wondering if there is a build-in method in Java, but could not find such jet. Can you give me some advice? Best regards Phil

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  • Embed external images for use in HTML canvas?

    - by Philipp Lenssen
    I'm using JavaScript to load an image into my Canvas element in Firefox. This works fine for local images, but throws a security exception for external images. Is there any way to avoid this security exception, one that does not involve my server having to act as proxy to load the image locally (because that would stress my server)? PS: The current code is similar to this: var img = new Image(); var contextSource = canvasSource.getContext('2d'); contextSource.drawImage(img, 0, 0); // get image data to do stuff with pixels var imageDataSource = contextSource.getImageData(0, 0, width - 1, height - 1);

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  • Visual Studio: Where are global settings stored?

    - by Philipp
    Hi, sometimes after logging out and in again, my settings in Tools/Options/Projects and Solutions/VC++ Directories are lost. To investigate the problem I tried to find the file where Visual Studio (2008 Team) stores those settings on disk. (Or is it in the registry?) Can anybody point me to where it is? Thanks a lot!

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  • [R] multiple functions in one R script

    - by Philipp
    Hi, I guess it's a stupid question, but I don't get it :-( I wrote an R script, which creates heatmaps out of xls files. I am calling this R script with a Perl system call and pass over all the arguments. This all works fine. Now I wanted to make the R script less confusing by writing different functions in the R script, for example: args <- commandArgs(TRUE) parsexls <- function(filepath) { data <- read.xls(...) assign("data", data, globalenv()) } reorder <- function(var) { data <- data[order...] assign("data", data, globalenv()) } When I want to call the functions with parsexls(args[1]) reorder(args[2]) nothing happens. But when I place the parsexls(args[1]) in the script between the two functions shown above, the file is parsed correctly! The reorder(args[2]) seems never to be read. Any ideas what I am doing wrong? Phil

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  • Where are global settings stored?

    - by Philipp
    Hi, sometimes after logging out and in again, my settings in Tools/Options/Projects and Solutions/VC++ Directories are lost. To investigate the problem I tried to find the file where Visual Studio (2008 Team) stores those settings on disk. (Or is it in the registry?) Can anybody point me to where it is? Thanks a lot!

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  • Android Bluetooth Cross Platform Interoperability

    - by Philipp
    Hi, I have a Bluetooth service that I programmed for .Net on a Windows machine and I would like my Android 2.1 phone to connect to it. The server is listening for the same UUID which the Android is using to connect. But the connection is failing. When I try to connect to devices that are not listening for that UUID, I get an exception with the message "Service discovery failed", but when I try to connect to the server that is listening for the right UUID a message box pops up saying: "There was a problem pairing with bluetooth device." And I get an exception with the message "Connection timed out." So it looks like the server and the Android are communicating, but there is some sort of failure during handshaking. I know that the Android requires that the server is paired with the phone and also encrypts the communication channel. Does anyone know which specifications are used to do this? I would love to get my server to respond properly to the connection attempt. Thanks!

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  • Is Tomcat 6 ready for continuous integration or how to get it work?

    - by Philipp Sende
    Hello stackoverflow community, I'm looking for a hint how to make tomcat CI ready or an servlet container / application container which stand often redeploys like they happen when using hudson ci. I experienced that Tomcat 6 does not properly undeploy webapps, leaving classes in jvm. For example I monitored tomcat 6 with VisualVM: on start 2000 classes, on deploy of an app 3000 after redeploy 4000 and redeploy 5000 classes and so on - leading to crashes, memory leaks... Okay hope one have a hint on tomcat and continuous-integration or other app servers. Best,

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  • globalize2 with xml/json support

    - by Philipp Bolliger
    I'm implementing a distributed application, server with rails and mobile clients in objective c (iPhone). To enable internationalization, I use the rails plugin 'globalize2' by joshmh. However, it turned out that this plugin does not translate attributes when calling to_xml or to_json on an ActiveRecord. Does anyone know of a workaround / patch? Do you have any ideas how to fix this, where to alter globalize2? Using: Rails 2.3.5 globalize2: commit from 2010-01-11

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  • Modifying reference member from const member function in C++

    - by Philipp
    I am working on const-correctness of my code and just wondered why this code compiles: class X { int x; int& y; public: X(int& _y):y(_y) { } void f(int& newY) const { //x = 3; would not work, that's fine y = newY; //does compile. Why? } }; int main(int argc, char **argv) { int i1=0, i2=0; X myX(i1); myX.f(i2); ... } As far as I understand, f() is changing the object myX, although it says to be const. How can I ensure my compiler complains when I do assign to y? (Visual C++ 2008) Thank a lot!

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  • Passing a filepath to a R function?

    - by Philipp
    Hi everybody, I tried to pass a filepath to a function in R, but I failed =/ I hope someone here can help me. >heat <- function(filepath) { chicks <- read.table(file=filepath, dec=",", header=TRUE, sep="\t") ... } When I call the function, nothing happens... >heat("/home/.../file.txt") ... and "chicks" is not found >chicks Error: Object 'chicks' not found What is the correct way to pass a path to a function? Best wishes from Germany, Phil

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  • C#. Saving information about events and event handlers and removing handlers using this information

    - by Philipp
    I have an object which is creating several event handlers using lambda expressions, and I need to remove all handlers created in that object in one time. I'm trying to create some unified static object which will 'know' which handler relates to which object and event if event handler was created through this static object. I tried something like code below, but I don't understand how to save events and event handlers objects, to be able remove handlers in one time. class Program { static void Main(string[] args) { var EventSender = new EventSender(); var EventReceiver = new EventReceiver(EventSender); EventSender.Invoke(" some var "); LinkSaver.RemoveEvent(EventReceiver); // ?? Console.ReadKey(); } } public class ObjLink{ public object Event; public object Action; } public static class LinkSaver { public static void SetEvent<T>(object obj, Action<T> Event, T Action) { Event(Action); var objLink = new ObjLink{Event = Event, Action = Action}; if (!Links.ContainsKey(obj)) Links.Add(obj, new List<ObjLink>{objLink}); else Links[obj].Add(objLink); } static Dictionary<object,List<ObjLink>> Links = new Dictionary<object, List<ObjLink>>(); public static void RemoveEvent(object obj){ foreach(var objLink in Links[obj]){ // objLink.Event -= objLink.Action; ??? } } } public class EventReceiver { public EventReceiver(EventSender obj) { LinkSaver.SetEvent<EventSender.TestDelegate>(this, obj.SetEvent, str => Console.WriteLine(str + " test event!")); } } public class EventSender { public void Invoke(string var) { if (eventTest != null) eventTest(var); } public void SetEvent(TestDelegate Action) { eventTest += Action; } public delegate void TestDelegate(string var); private event TestDelegate eventTest; // by the way public void RemoveFromEvent() { foreach (var handler in eventTest.GetInvocationList()) eventTest -= (TestDelegate)handler; } }

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  • convert javascript number to css value -- maximum number of trailing decimals

    - by philipp
    I am about to have some fun with the css transform matrix and javascript. At the moment everything is cool, except when a number becomes something like 0.000034e3344 after the to string conversion. Than the transform does not work. So I know that there is the Number.toFixed() method which actually solves the problem, but i ask myself how many trailing decimals make sense. So what is the highest value i can pass to the toFixed() method to get the most precise results? EDIT::: the exact number output was: 9.685539407532573e-20

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  • Calendar formatting issues

    - by Philipp
    Hi folks! We're searching for information on how to format instances of java.util.Calendar and more general information and coding hints regarding transition from using java.util.Date to java.util.Calendar. best, phil

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  • Optimal diff between object lists in Java

    - by Philipp
    I have a List of Java objects on my server which is sent to the client through some serialization mechanism. Once in a while the List of objects gets updated on the server, that is, some objects get added, some get deleted and others just change their place in the List. I want to update the List on the client side as well, but send the least possible data. Especially, I don't want to resend Objects which are already available on the client. Is there a library available which will produce some sort of diff from the two lists, so that I can only send the difference and the new Objects accross the wire? I have found several Java implementation of the unix diff command, but this algorithm is unpractical for order changes. ie. [A,B,C] - [C,B,A] could be sent as only place changes [1-3] [3-1], while diff will want to resend the whole A and C objects (as far as I understand).

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  • Silverlight Cream for June 08, 2010 -- #877

    - by Dave Campbell
    In this Issue: Miroslav Miroslavov, Chris Klug, Beau, Christian Schormann(-2-), Dan Wahlin, Pete Brown, Michael S. Scherotter, Philipp Sumi, Andy Wigley, and Phil Middlemiss. Shoutouts: Mark Tucker set about learning Caliburn, and in the process is writing a Caliburn Book: Chapters 1-3 Jesse Liberty has a great link-laden post up about why we should all be learning/using Blend: Why Developers Should, Must, Do Care About The New Expression Blend be sure to read what he says about WP7 development, however! Charlie Kindel announced an Install problem with the Developer Tools CTP Refresh and the WP7 tools... check this out if you're having problems. John Papa has a good post up on the happenings yesterday: Expression Studio 4 Launch of Blend, SketchFlow, Encoder and More! Erik Mork & Company's latest "This Week in Silverlight" is titled First Drop: Prism v4 – First Drop is Available From SilverlightCream.com: Animated navigation between Pages Miroslav Miroslavov has Part 8 of his "Silverlight in Action" series up, detailing cool things from the CompleteIT site... this one is on Animated navigation between pages. Subtitling videos Chris Klug got a gig adding subtitles to videos for Microsoft (sweet) ... and no, not *that* kind of subtitles... read how he approached the final solution. Silverlight Watermark TextBox I'm not sure we can have too many Watermark TextBoxes, and neither does Beau , who sent me a link to this one... give it a dance and decide. Blend 4: Collaborative SketchFlow Feedback with SharePoint With the new Blend release, Christian Schormann has a post up describing the lashup to Sharepoint for sharing Sketchflow and getting feedback. New Utility, Links, and Tutorials for Path-Based Layout Christian Schormann also has a collection of resources for Path-Based Layouts, including a utility "that lets you apply a whole bunch of position-specific effects without having to write any code"... lots of links to resources here. Tales from the Trenches – Building a Real-World Silverlight Line of Business Application Dan Wahlin draws on his recent experience and lays out some of the fun and pitfalls of building LOB apps in Silverlight... WCF, MVVM, slides, and code included WPF (and Silverlight): Choose your Fonts and Text Rendering Options Wisely Pete Brown has a great post up on using fonts wisely across multiple platforms... lots of info and good discussion in the comments as well. Ball Watch USA Remember the awesome watch Michael S. Scherotter did in Silverlight 1 and then converted to Updated Ball Trainmaster Cannonball Watch to Silverlight 2? Well... there's now a contest underfoot and 8 videos to help you get started... all good stuff, and good luck! ... Michael has a post up about the contest: Enter to Win a Ball Watch by Creating One in Silverlight Announcing Sketchables – Rapid Mockup Creation with SketchFlow By way of Jesse Libertyhttp://jesseliberty.com/2010/06/08/why-developers-should-must-do-care-about-the-new-expression-blend/, this is a cool production by Philipp Sumi about a simple mockup framework he's created. Perst - a database for Windows Phone 7 Silverlight I think one of my first comments to Michael Washington back at the MVP Summit 2010 was that we'd need a database engine, and too cool, but we've got one, Andy Wigley discusses Perst in this post... to save you some time, here's the Perst site A Chrome and Glass Theme - Part 7 Phil Middlemiss has part 7 of his great theme-building series up... this time he's giving the accordian control a once-over. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Pwn2Own : un iPhone piraté en 20 secondes, pour en copier tous les SMS

    Pwn2Own : un iPhone piraté en 20 secondes, pour en copier tous les SMS Lors du concours de hacking Pwn2Own, la base de donnée qui contient les SMS de l'iPhone n'a pas tenu longtemps. Deux hackers, enzo Iozzo et Ralf Philipp Weinmann, ont réussi à s'y introduire et à en copier tout le contenu (y compris les SMS qui avaient été effacés) en redirigeant les utilisateurs vers un site web compromis. Tout cela en un temps record, puisqu'il leur a suffit de 20 secondes pour aspirer toutes les données de cette base de données de l'iPhone. leur technique pourrait également permettre d'accéder aux contacts, photos, fichiers audio, etc... du smartphone. Les deux hommes ont reçu 15.000 $ pour leur victoire, et les ...

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  • Best Design Pattern to Implement while Mapping Actions in MVC

    - by FidEliO
    What could be the best practices of writing the following case: We have a controller which based on what paths users take, take different actions. For example: if user chooses the path /path1/hello it will say hello. If a user chooses /path1/bye?name="Philipp" it will invoke sayGoodBye() and etc. I have written a switch statement inside the controller which is simple, however IMO not efficient. What are the best way to implement this, considering that paths are generally String. private void takeAction() { switch (path[1]) { case "hello": //sayHello(); break; case "bye": //sayBye(); break; case "case3": //Blah(); break; ... } }

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  • How to isolate a single element from a scraped web page in R

    - by PaulHurleyuk
    Hello, I'm trying to do soemone a favour, and it's a tad outside my comfort zone, so I'm stuck. I want to use R to scrape this page (http://www.fifa.com/worldcup/archive/germany2006/results/matches/match=97410001/report.html ) and others, to get the goal scorers and times. So far, this is what I've got require(RCurl) require(XML) theURL <-"http://www.fifa.com/worldcup/archive/germany2006/results/matches/match=97410001/report.html" webpage <- getURL(theURL, header=FALSE, verbose=TRUE) webpagecont <- readLines(tc <- textConnection(webpage)); close(tc) pagetree <- htmlTreeParse(webpagecont, error=function(...){}, useInternalNodes = TRUE) and the pagetree object now contains a pointer to my parsed html (I think). The part I want is <div class="cont")<ul> <div class="bold medium">Goals scored</div> <li>Philipp LAHM (GER) 6', </li> <li>Paulo WANCHOPE (CRC) 12', </li> <li>Miroslav KLOSE (GER) 17', </li> <li>Miroslav KLOSE (GER) 61', </li> <li>Paulo WANCHOPE (CRC) 73', </li> <li>Torsten FRINGS (GER) 87'</li> </ul></div> but I'm now lost as to how to isolate them, and frankly xpathSApply, xpathApply confuse the beejeebies out of me !. So, does anyone know how to fomulate a command to suck out the element conmtaiend within the tags ? Thanks Paul.

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  • Internet Explorer cannot display page from apache with single SSL virtual host

    - by P.scheit
    I have a question that has come up somehow in different questions but I still can't find the solution, yet. My problem is that I'm hosting a site on apache 2.4 on debian with SSL and Internet Explorer 7 on windows xp shows Internet Explorer cannot display the webpage I have only ONE virtual host that uses ssl, but DIFFERENT virtual hosts that use http. Here is my config for the site with SSL enabled (etc/sites-avaible/default-ssl is NOT linked) <Virtualhost xx.yyy.86.193:443> ServerName www.my-certified-domain.de ServerAlias my-certified-domain.de DocumentRoot "/var/local/www/my-certified-domain.de/current/www" Alias /files "/var/local/www/my-certified-domain.de/current/files" CustomLog /var/log/apache2/access.my-certified-domain.de.log combined <Directory "/var/local/www/my-certified-domain.de/current/www"> AllowOverride All </Directory> SSLEngine on SSLCertificateFile /etc/ssl/certs/www.my-certified-domain.de.crt SSLCertificateKeyFile /etc/ssl/private/www.my-certified-domain.de.key SSLCipherSuite HIGH:MEDIUM:!aNULL:+SHA1:+MD5:+HIGH:+MEDIUM SSLCertificateChainFile /etc/apache2/ssl.crt/www.my-certified-domain.de.ca BrowserMatch "MSIE [2-8]" nokeepalive downgrade-1.0 force-response-1.0 </VirtualHost> <VirtualHost *:80> ServerName www.my-certified-domain.de ServerAlias my-certified-domain.de CustomLog /var/log/apache2/access.my-certified-domain.de.log combined Redirect permanent / https://www.my-certified-domain.de/ </VirtualHost> my ports.conf looks like this: NameVirtualHost *:80 Listen 80 <IfModule mod_ssl.c> # If you add NameVirtualHost *:443 here, you will also have to change # the VirtualHost statement in /etc/apache2/sites-available/default-ssl # to <VirtualHost *:443> # Server Name Indication for SSL named virtual hosts is currently not # supported by MSIE on Windows XP. Listen 443 </IfModule> <IfModule mod_gnutls.c> Listen 443 </IfModule> the output from apache2ctl -S is like this: xx.yyy.86.193:443 www.my-certified-domain.de (/etc/apache2/sites-enabled/020-my-certified-domain.de:1) wildcard NameVirtualHosts and _default_ servers: *:80 is a NameVirtualHost default server phpmyadmin.my-certified-domain.de (/etc/apache2/conf.d/phpmyadmin.conf:3) port 80 namevhost phpmyadmin.my-certified-domain.de (/etc/apache2/conf.d/phpmyadmin.conf:3) port 80 namevhost staging.my-certified-domain.de (/etc/apache2/sites-enabled/010-staging.my-certified-domain.de:1) port 80 namevhost testing.my-certified-domain.de (/etc/apache2/sites-enabled/015-testing.my-certified-domain.de:1) port 80 namevhost www.my-certified-domain.de (/etc/apache2/sites-enabled/020-my-certified-domain.de:31) I included the solution for this question: Internet explorer cannot display the page, other browsers can, possibly htaccess / server error And I understand the answer from this question: How to setup Apache NameVirtualHost on SSL? In fakt: I only have one ssl certificate for the domain. And I only want to run ONE virtual host with ssl. So I just want to use the one ip for the ssl virtual host. But still (after rebooting / restarting / testing) internet explorer will still not show the page. When I intepret the apachectl -S as well, I already have only one SSL host and this should response to the initial SSH handshake, shouldn't it? What is wrong in this setup? Thank you so much Philipp

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