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Articles indexed in March 2010

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• Checking for a valid and in-use email address in PHP

  - by espais

  I'm not sure if this is exactly possible, but figured I'd throw it out there. I have a client that is getting some hate-mail from somebody he knows via a contact form on a website that I developed for him. Currently I do the normal checks for a validly-formatted email address, along with a Captcha, but the client has requested that a user enter his/her own email address in the form. Now I realize that something like this could be easily spoofed by setting up a fake Yahoo account, etc, but the client's thinking is that this person is not quite that computer-literate. Is there any possibility for checking if an email address is valid and in-use? The only other things I can think of is turning his contact form into a mailto: link.

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• How do I validate XML via RELAX NG in Ruby?

  - by cdleary

  The REXML module appears to have support for RELAX NG validation, but the docs don't have any real information on using the validation portion of the framework. How would you validate an XML document with a RELAX NG schema? A code snippet would be most helpful. TIA!

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• Implementing your own depth buffer with GLSL

  - by NGorso

  I need a datastructure of the same size as the normal depth buffer and I need to be able to read from and write to it in a shader. Is this possible, and what does this datastructure look like?

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• rotate text from a horizontal to a vertical position

  - by Joe

  Is it possible to rotate text from a horizontal position to a vertical on a single point without using something like flash? So I would read the same text normally by tilting my head. I was thinking you can do this in jquery but couldn't find a plug in.

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• Edite, select value from UITableView on the iPhone

  - by Anthony D

  I have a UITableView with a list of names, representing server configurations. I want the user to be able to select a server configuration, add a server config, edit a server config, or just cancel out of the view and return to the main view. I'm having a hard time trying to figure out how to achieve all of that functionality in this view. To select, the user should be able to just tap the server config name and a check will appear next to the name then the user is taken back to the main view automatically (or use a save button instead?). To edit the server config, I would also like the user to be able to tap the server config name and be taken to a detail screen where changes can be made. How can I accomplish both since I want both to be done by tapping the server name (row)? Right now the cancel button seems out of place since the screen is accessed via a UINavigationController. Any suggestions?

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• How to create custom asp.net validator that works with UpdatePanel?

  - by Goran

  I think that subject summs it pretty well... I have created my custom validators that work great when I put them on page in design mode. However if I place them in a usercontrol, and then try to add this user control to the parent page via updatepanel, then my custom validators just won't trigger. They simply don't work. Does anyone have any clue on what I have to do here? .net 3.5

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• Issue with getting 2 chars from string using indexer

  - by Learner

  I am facing an issue in reading char values. See my program below. I want to evaluate an infix expression. As you can see I want to read '10' , '*', '20' and then use them...but if I use string indexer s[0] will be '1' and not '10' and hence I am not able to get the expected result. Can you guys suggest me something? Code is in c# class Program { static void Main(string[] args) { string infix = "10*2+20-20+3"; float result = EvaluateInfix(infix); Console.WriteLine(result); Console.ReadKey(); } public static float EvaluateInfix(string s) { Stack<float> operand = new Stack<float>(); Stack<char> operator1 = new Stack<char>(); int len = s.Length; for (int i = 0; i < len; i++) { if (isOperator(s[i])) // I am having an issue here as s[i] gives each character and I want the number 10 operator1.Push(s[i]); else { operand.Push(s[i]); if (operand.Count == 2) Compute(operand, operator1); } } return operand.Pop(); } public static void Compute(Stack<float> operand, Stack<char> operator1) { float operand1 = operand.Pop(); float operand2 = operand.Pop(); char op = operator1.Pop(); if (op == '+') operand.Push(operand1 + operand2); else if(op=='-') operand.Push(operand1 - operand2); else if(op=='*') operand.Push(operand1 * operand2); else if(op=='/') operand.Push(operand1 / operand2); } public static bool isOperator(char c) { bool result = false; if (c == '+' || c == '-' || c == '*' || c == '/') result = true; return result; } } }

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• How to display a Dialog on window created using XCreateWindow in QT 4.5.2

  - by Ummar

  I am doing work on project. In which I have developed a full size screen displaying images using XCreateWindow. Now I want to display a dialog on this screen. I have created a QDialog it does'nt show on the full size screen but it is displayed on screen when it is not full size. Any Help. My code for creating screen and dialogbox is as follows XSetWindowAttributes attribs; XClassHint *classhints; XSizeHints *sizehints; int wndwidth, wndheight; long input_mask, ic_input_mask; XEvent xevent; wndwidth = fullscreen ? WidthOfScreen(screen) : width; wndheight = fullscreen ? HeightOfScreen(screen) : height; attribs.background_pixel = BlackPixelOfScreen(screen); attribs.backing_store = ownbackstore ? NotUseful : Always; attribs.override_redirect = fullscreen; wnd = XCreateWindow(display, RootWindowOfScreen(screen), 0, 0, wndwidth, wndheight, 0, CopyFromParent, InputOutput, CopyFromParent, CWBackPixel | CWBackingStore | CWOverrideRedirect, &attribs); XRaiseWindow(display, wnd); //QDialog I want to show on wnd(XCreateWindow) ToolbarDialog *objToolbarDialog= new ToolbarDialog(); objToolbarDialog->setVisible(true); objToolbarDialog->showNormal();

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• Which book for windows Shell programming?

  - by serefarikan

  I've been looking for a good book for windows shell programming, and the only one I could find is Visual C++ Windows Shell Programming by Dino Eposito: http://www.wintellect.com/BookInformation.aspx?ASIN=1861001843 It is an old book, and I'd like to know if you know of any good resources which could help. I need to develop a couple of windows explorer extensions, and apparently managed code is not recommended by Microsoft at least for some of these tasks. So I'm searching for a good resource for native development. Kind regards Seref

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• Spring 3 replacement for isDisabledInThisEnvironment

  - by kayahr

  I'm currently converting a test class which extended the Spring class AbstractTransactionalSpringContextTests to Spring 3. This abstract class is now deprecated and I should use AbstractJUnit38SpringContextTests. The test class had this method in it: @Override protected boolean isDisabledInThisEnvironment(String testMethodName) { // Test is only needed for bugfixing and development. Do not check in with this flag on false. return true; } What is the replacement for this isDisabledInThisEnvironment method?

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• Magento Developers: Is Magento really -that- good?

  - by Kevin

  We are looking at Magento as a possible commerce solution, but we are reading more bad than good on the free product. However Magento sells itself as the best thing ever, so I am confused on its actual value. Thought I'd ask the pros here. Can any seasoned developer here explain the difficulties in using Magento not only as a commerce solution, but a CMS solution? Can it do easy content management like Drupal, Joomla, etc? If I wanted a custom list of products, is that simple or do you have to spend hours learning where to create the code? Is it modular in the way Drupal is where you can say, here is my custom code, and interact with Magento and change some of its function? Is it difficult to conceive how it works from a developer, user, and customer standpoint? We don't use Zend Framework and are not familiar with Smarty syntax (which I think Magento uses for templating). The risk in my mind is that the learning curve will be really steep (especially for the designers), and trouble tickets may take a long time to resolve (resulting in some pissed off customers). Any thoughts from people who have used Magento extensively?

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• Optimized way to convert table base to table less design

  - by Brij

  What is the best optimized way to convert following in table less design? the layout should be cross browser compatible and SEO Friendly. <table cellpadding="0" cellspacing="0"> <tr> <td>Row 1 Column 1</td> <td>Row 1 Column 2</td> <td>Row 1 Column 3</td> </tr> <tr> <td colspan="3" align="center">Row 2</td> </tr> <tr> <td>Row 3</td> <td align="right" colspan="2"><img src="test.jpg" alt="test" /></td> </tr> </table>

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• Loose the last 3 chars from string variable

  - by Phil

  if the last 4 chars in my string(result) are " AND" or the last three chars are " OR" I would like to remove these from the string. So far I have am trying result.trimend and a few other methods but am unsure how to get it working. Thanks

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• Simple issue regarding date formats.

  - by Robert

  We are hosting a website that when browsed to locally loads up fine but if you browse to it externally you get Conversion from string "1/15/2010 8:46:01 AM" to type 'Date' is not valid. What do I change on the server to fix this. When browsing the site on the server it works, although I am logged into the server as a different user to that in IIS. Any ideas this is actually starting to cause a head ache now.

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• Makecert.exe hangs

  - by Robert

  I was following the steps in Scott Hanselman's blog post describing how to create a certificate authority and code signing certificate for PowerShell scripts. Initially, I created the certificate authority and a personal certifcate and used it to sign a powershell script successfully. All went as described in the blog post. The problem starts (as most do) when I did something that was (probably) stupid, although it seemed reasonable at the time. I wanted to start over and repeat the process again with a clean slate, so from the mmc certificates snap-in console, I deleted the personal certificate and the certificate authority I created previously. After that any time I try to use makecert, (just as I did the first time around), makecert either hangs or faults (which prompts to end or debug). Did I hose something up by deleting via the certificates snap-in? It didn't complain or warn me that it could be potentially hazardous. Is this just coincidence and something else entirely could be hosed? I have Event Log entries from the times when makecert crashed, which all look very similar; here is one: Log Name: Application Source: Application Error Date: 8/5/2009 3:55:04 PM Event ID: 1000 Task Category: (100) Level: Error Description: Faulting application makecert.exe, version 6.0.6000.16384, time stamp 0x4545910b, faulting module ntdll.dll, version 6.0.6002.18005, time stamp 0x49e03821, exception code 0xc0000005, fault offset 0x00067409, process id 0xe58, application start time 0x01ca160efdf30625. Anyone have any ideas as to what exactly caused this and/or what I can do to fix it. I'm on 32-bit Vista Enterprise w/SP2.

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• Bypassing Router's DNS Settings

  - by Ramon Marco Navarro

  Is there a way to bypass my ISP provided CPE/router's DNS settings? I'd like to use OpenDNS but I am unable to access the administrator acount of the CPE. I tried logging in using the default passwords (admin/admin, admin/1234, etc) to no avail. I found out later that the admin password is generated using a generator where you input the CPE's MAC address. I tried emailing the manufacturer of the CPE (Huawei, the CPE is Huawei BM625) and my ISP but they aren't replying. I also saw similar queries (lots of them!) at Huawei's forums, without a single reply. So as a last resort, I'd like to know a way to bypass the CPE's DNS settings. My subscription is for a WiMAX service. I'm using Windows 7 and have already set the DNS settings for the Local Area Connection. But I still am not seeing the "You are already using OpenDNS" text at OpenDNS's site. And when explicitly using the OpenDNS servers I still seem to get 208.69.38.150 rather than the expected 208.69.38.160: nslookup www.opendns.com. 208.67.222.222 Server: resolver1.opendns.com Address: 208.67.222.222 Non-authoritative answer: Name: www.opendns.com Address: 208.69.38.150

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• Desktop icons and taskbar not shown in Windows XP

  - by phoenix

  Hi, I am not able see any desktop icons, taskbar in my Windows XP system. Also none of the keyboard shortcuts like Win Key + R, Win Key + E are not working. Yesterday I installed AVG 9.0 in my machine and was working fine. But today when I started the system an svchost error occured saying "the memory at location could not be written". What would be the cause of this issue? Thanks in advance

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• Escaping a password using mysqldump console

  - by psynnott

  I am running a mysqldump via a bash script and have encountered a problem with a password that contains special characters. mysqldump -hlocalhost -uUSERNAME -pPA$$W0RD DATABASE | gzip > /home/USERNAME/backups-mysql/BACKUP.gz How do I escape the password?

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• Oracle confirme l'arrivée du Java Development Kit 7, la modularité serait la principale nouveauté du

  Oracle confirme l'arrivée du JDK 7 Qui aura pour principale nouveauté la modularité, et réitère son attachement à Java Oracle vient de réitérer son attachement à Java lors de l'EclipseCon 2010 qui se déroule actuellement en Californie. L'ancien de Sun, Jeet Kaul - aujourd'hui vice-président de Oracle - et Steve Harris, lui aussi vice-président de la société, ont multiplié les déclarations allant dans ce sens lors de la manifestation. Pour Kaul, « l'élément clef du succès de Java, c'est sa plateforme » en faisant allusion à GlassFish, le serveur d'application de référence de Java EE 6. GlassFish, ont-il continué, devrait d'ailleurs connaître une mise à...

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• Estrategias de monitorización y supervisión de entornos

  - by [email protected]

  El bajo rendimiento de un entorno de aplicación Oracle E-Business Suite, Siebel, Peoplesoft o Hyperion puede tener un impacto directo en puntos fundamentales de su negocio. Para sacar el mayor valor a la inversión realizada en Oracle, es crítico asegurar que sus aplicaciones funcionan óptimamente. Supervisando preventivamente la salud de su instalación a través de nuestros servicios de revisión de entornos productivos y monitorización de problemas de rendimiento usted puede identificar rápidamente y resolver cualquier problema potencial, reduciendo considerablemente cualquier impacto en su negocio. Brochure: Performance & Health Check

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• Ügyfelek elégedettsége

  - by Lajos Sárecz

  Tegnap az indexen olvastam egy érdekes cikket arról, hogy ma már idehaza is egyre tudatosabban viselkednek a fogyasztók az IFUA Horváth & Partners felmérése szerint. Például bankok esetében ha jobb ajánlat van a konkurenciánál, akkor máris átviszik a pénzüket. Fentirol egybol beugrott, hogy az Oracle Real User Experience Insight (RUEI) termékünk esetében készült Gartner és ResponseTek közös felmérés is hasonló megfigyelésre épít, csak épp az online, webes rendszerek esetében. Így például ha maradunk a banki példánál, akkor mondjuk egy netbank rendszer elégedetlen felhasználóit is könnyen elveszíthetjük. A felmérés alapján az összes ügyfél kb. 10%-át veszíthetjük el, ami az összes problémát tapasztaló felhasználónak közel a fele! Ezidáig mindig óvatosan kezeltem a fenti ábrát, hiszen nem voltam biztos abban a magyar vásárlók is kelloen tudatosak. Az IFUA felmérése alapján azonban bátrabban állíthatom, hogy a ResponseTek felmérés nagyságrendileg hasonló eredményt hozna Magyarországon is. Így érdemes lehet megfontolni bármely olyan cégnek a valós végfelhasználók hatékony monitorozását, amely forgalmának és bevételeinek jelentos részét webes felületen realizálja. Az Oracle RUEI terméke mindezt úgy teszi, hogy a hálózati protokollt elemzi. Ezáltal rendkívül gyorsan bevezetheto, nem igényel beavatkozást a már muködo alkalmazásokba és a valós felhasználói aktivitást teljes mértékben képes monitorozni. Igény esetén magam is szívesen segítek a szoftver kipróbálásában, saját környezetben történo tesztelésében.

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• Problem with dropdownbox length

  - by vikitor

  Hello, I'm creating a javascript method that populates lists depending on a radio button selected previously. As it depends on animals or plants to populate it, my problem comes when I have to populate it after it's already been populated. I mean, the plants dropdownlist has 88 elements, and the animals is 888, when I try to come back from animals to plants, I get some of the animals. I know that my controller method is working properly because it returns the values I select, so the problem is the javascript method. Here is the code: if(selector == "sOrder") alert(document.getElementById(selector).options.length); for (i = 0; i < document.getElementById(selector).options.length; i++) { document.getElementById(selector).remove(i); } if (selector == "sOrder") alert(document.getElementById(selector).options.length); document.getElementById(selector).options[0] = new Option("-select-", "0", true, true); for (i = 1; i <= data.length; i++) { document.getElementById(selector).options[i] = new Option(data[i - 1].taxName, data[i - 1].taxRecID);} Here is the strange thing, when I enter the method I try to erase all the elements of the dropdownlist in order to populate it afterwards. As sOrder is the same selector I had previously selected, I get the elements, the thing is that the first alert I get the proper result, 888, but in the second alert, I should get a 0 right? It shows 444, so when I populate it again it just overrides the first 88 plants and then animals till 444. What am I doing wrong? Thank you all in advance, Victor

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• How to search multiple columns in MySQL?

  - by George

  I'm trying to make a search feature that will search multiple columns to find a keyword based match. This query: SELECT title FROM pages LIKE %$query%; works only for searching one column, I noticed separating column names with commas results in an error. So is it possible to search multiple columns in mysql?

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• Performance monitor shows 4294967293 sessions active

  - by TGnat

  I have an ASP.Net 3.5 website running in IIS 6 on Windows Server 2003 R2. It is a relatively small internal application that probably serves less than ten users at any given time. The server has 4 Gig of memory and shows that 3+ Gig is available while the site is active. Just minutes after restarting the web application Performance monitor shows that there is a whopping 4,294,967,293 sessions active! I am fairly certain that this number is incorrect; at the time this reading there were only 100 requests to the website. Has anyone else experienced this kind odd behavior from perf mon? Any ideas on how to get an accurate reading? UPDATE: After running for about an hour the number of active sessions has dropped by 4. So it does seem to be responding to sessions timing out.

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• Is it a good idea to return " const char * " from a function?

  - by AJ

  Now I have a function that has to return a string. I saw a particular implementation where he returns a const char * from the function. Something like this: const char * GetSomeString() { ........ return somestlstring.c_str(); } SomeOtherFoo () { const char * tmp = GetSomeString(); string s = tmp; } Now I felt there is something potentially wrong with this. Is my gut feel right? or Is this a perfectly safe code? Kindly give me ur suggestions. I have a feeling return const char * this way might result in havoc.. Thanks, Arjun

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