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Articles indexed Friday June 11 2010

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  • Static struct in C++

    - by pingvinus
    Hi, I want to define an structure, where some math constants would be stored. Here what I've got now: struct consts { //salt density kg/m3 static const double gamma; }; const double consts::gamma = 2350; It works fine, but there would be more than 10 floating point constants, so I doesn't want to wrote 'static const' before each of them. And define something like that: static const struct consts { //salt density kg/m3 double gamma; }; const double consts::gamma = 2350; It look fine, but I got these errors: 1. member function redeclaration not allowed 2. a nonstatic data member may not be defined outside its class I wondering if there any C++ way to do it?

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  • How to automatically select the selected item in list menu after submitting the form?

    - by SzamDev
    Hi I have this code : <form id="form2" name="form2" method="post" action=""> <table dir="ltr" width="554" border="0" align="center" cellpadding="0" cellspacing="0"> <tr> <td width="269" class="da"><div align="center"><span id="spryselect1"> <select onchange="form2.submit()" name="mpage" id="mpage"> <option selected="selected" value="no">-----------</option> <option value="medmo">Medmo.com</option> <option value="paris">Paris.com</option> <option value="imo">IMO.com</option> </select> </span></div></td> <td width="214" class="t_b">Select Website</td> </tr> </table> </form> When the user select a value, the form will automatically submit, I want the item that the user has selected to be selected after submitting the form. Because I am facing this proplem: The user select the first item (Medmo.com) - form submit - selected item will be "-------" I want this to happen : The user select the first item (Medmo.com) - form submit - selected item will be "Medmo.com" How I can do that? Thanks in Advance.

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  • create a sparse BufferedImage in java

    - by elgcom
    I have to create an image with very large resolution, but the image is relatively "sparse", only some areas in the image need to draw. For example with following code /* this take 5GB memory */ final BufferedImage img = new BufferedImage( 36000, 36000, BufferedImage.TYPE_INT_ARGB); /* draw something */ Graphics g = img.getGraphics(); g.drawImage(....); /* output as PNG */ final File out = new File("out.png"); ImageIO.write(img, "png", out); The PNG image on the end I created is ONLY about 200~300 MB. The question is how can I avoid creating a 5GB BufferedImage at the beginning? I do need an image with large dimension, but with very sparse color information. Is there any Stream for BufferedImage so that it will not take so much memory?

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  • Is there a tool out there that lets you print a colour chart / palette of colours used on a web page

    - by undefined
    I want to print a table of the colours used in a web page that my graphic designer has produced - I have .png files at present and use Fireworks to view them. It would be great if there was a tool that lets you print a table with the colour and hex value so I can easily reference when programming. Anyone come across such a thing? Sounds to me like there should be a firefox extension or similar?

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  • What if I change my Android App price to free and after i change idea?

    - by Skatephone
    Hi, i have read on the market support that "If you have previously published an application for free, you cannot change it to have a price." But I was wondering, if at the contrary I change my app from payed to free and some time after i want to re change it from free to payed! Can I? And if yes, Have I to wait some period (I have read something like this in the contract)? Tnk's Valerio From Italy

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  • How to compile these 2 java files correctly?

    - by user198729
    I'm following the steps here, it's basically : Compile the DataSource and LiveStream classes: javac -d . DataSource.java LiveStream.java Run using JMStudio: java JMStudio screen://0,0,160,120/10 But when I compile them, got lots of errors like javax.media doesn't exist and so on. Here's the directory structure: D:\>dir 2010-06-11 22:25 <DIR> . 2010-06-11 22:25 <DIR> .. 2010-06-11 22:25 3,730 DataSource.java 2010-06-11 22:25 6,860 LiveStream.java Can someone give more detailed steps how to set up the environment correctly to compile correctly?

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  • How can I override TryParse?

    - by cyclotis04
    I would like to override bool's TryParse method to accept "yes" and "no." I know the method I want to use (below) but I don't know how to override bool's method. ... bool TryParse(string value, out bool result) { if (value == "yes") { result = true; return true; } else if (value == "no") { result = false; return true; } else { return bool.TryParse(value, result); } }

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  • GPRS communication

    - by Manoj Goel
    Hi All, I want to set up communication between GSM/GPRS modem and a remote server or PC. How to do that? Do we need some application on PC which will communicate to the GSM modem. I want 2 way commuinication. I want to interface GSM/GPRS modem with some microprocessor which has some LCD display. Can anybody help me in this. Thanks, Manoj

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  • Hour from DateTime? in 24 hours format

    - by rolando
    Hello to everyone, So i have this DateTime? and what i want to do is to obtain the hour but show it in 24 hours format. For example: If the hour is 2:20:23 p.m. i want to convert it to 14:20 and that's it. I'm working with Visual C#. Any ideas please, thank you. I have something like this public static string FormatearHoraA24(DateTime? fechaHora) { if (!fechaHora.HasValue) return ""; string retornar = ""; //here goes what i need }

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  • Tracking user changes in ASP.NET MVC

    - by Ian Roke
    I have a requirement to track what authenticated users change with regards to the data when logged in. I don't need to track what pages they look at although that could be very useful in future. I have thought about saving the User Guid but that seems very clunky. Are there other methods/best practises?

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  • How can I get a project type on Netbeans Platform?

    - by Fabio
    Hi folks, Is there a way to know the type of a selected project? I would like to do some specific actions depending of the project type like a J2SE project. Below is the only way that I found to do that: public final class MyAction extends CookieAction { @Override public boolean isEnabled() { if(this.getActivatedNodes() == null || this.getActivatedNodes().length != 1) { return false; } Lookup lookup = this.getActivatedNodes()[0].getLookup(); // gets the selected project Project currentProject = lookup.lookup(Project.class); // checks if the selected project is a J2SE Project or a Maven Project if(currentProject != null && (currentProject.getClass().getSimpleName().equals("J2SEProject") || currentProject.getClass().getSimpleName().equals("NbMavenProjectImpl"))) { return true; } return false; }}

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  • Rich text editor for JSF 2

    - by Pradyumna
    Hi, I searched around for a basic WYSIWYG rich text editor that I can use in a JSF 2 (VDL) application, but found nothing satisfactory.. in the sense that: The editor is very extensive, and not configurable (like PrettyFaces) The editor doesn't work with VDL (like RichFaces) Multiple instances of the editor cannot be used on the same page (like Tomahawk t:htmlArea) I actually don't need all the fancy things like Fonts, Indenting/justification, undo/redo... just Bold, Italic, Lists and Hyperlinks would suffice. Do you know of something that works well in this scenario, as well as gives out XHTML compliant markup, and works well with partial page refreshes(f:ajax), or would you recommend that I write my own? Thank you! Pradyumna

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  • jdbc:jtds:sqlserver driver problem

    - by senzacionale
    sonar.jdbc.url: jdbc:jtds:sqlserver://127.0.0.1/SQL2008:1433/Sonar sonar.jdbc.driverClassName: net.sourceforge.jtds.jdbc.Driver sonar.jdbc.validationQuery: select 1 sonar.jdbc.username: Sonar sonar.jdbc.password: Sonar sonar.jdbc.maxActive: 10 sonar.jdbc.maxIdle: 5 sonar.jdbc.minIdle: 2 sonar.jdbc.maxWait: 5000 sonar.jdbc.minEvictableIdleTimeMillis: 600000 sonar.jdbc.timeBetweenEvictionRunsMillis: 30000 Server name of MS SQL server is: 127.0.0.1/SQL2008, DB is Sonar, user and passwd are Sonar but i can not connect to my DB with jdbc. In SQL developer connect by TCP IP works.

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  • Why is Log4j rootLogger not filtering log events according to event level?

    - by Derek Mahar
    Why is the Log4j rootLogger in my application not filtering log events according to level? In my log4j.properties, I have several loggers: log4j.rootLogger=info,stdout log4j.logger.com.name.myapp=debug,myapp log4j.logger.org.castor=debug,castor log4j.logger.org.exolab.castor=debug,castor log4j.logger.org.hibernate=debug,hibernate log4j.logger.org.springframework=debug,spring Each of the loggers receive and record numerous log events at levels DEBUG and above, which is what I expect. The rootLogger, however, despite being set to level INFO, is displaying all of these events, too, including the DEBUG events, which is not what I expect. Instead, I would expect it to filter the DEBUG events, but display only the events at level INFO and higher (WARN, ERROR, and FATAL). Why is rootLogger displaying all of the events?

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  • Change "From" email address when sending to a specific domain.

    - by RB
    Hi, I would like to set up Exchange so that when a user (e.g. [email protected]) sends an email to somedomain.com Exchange makes the email appear to have come from [email protected]. This would have to be done on a per-domain basis, and invisibly to the user. So all emails come from [email protected], except emails to somedomain.com, which appear to come from [email protected]. If anyone has any ideas I would really appreciate it. Cheers, RB.

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  • Forcing IE8 Standards Mode with FEATURE_BROWSER_EMULATION

    - by earls
    I'm doing this: http://blogs.msdn.com/b/ie/archive/2009/03/10/more-ie8-extensibility-improvements.aspx But it's not working. I have "iexplore.exe" set to 8888 (decimal mode) under MACHINE, but it's still coming up documentMode = 5. I thought 8888 was suppose to force IE8 Standards Mode whether you have a doctype or not. What is going on?

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  • set JAVA_HOME in windows but "ant build" still fails

    - by patrickinmpls
    I set JAVA_HOME in windows environment preferences echo %JAVA_HOME% C:\Program Files (x86)\Java\jdk1.6.0_20 but then I try to run ant build and I get Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre6" I think the registry key JAVASOFT is interfering with my environment variable, but I'm not sure how to fix this

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  • WebM dans Firefox, le nouveau codec vidéo open-source fait son apparition dans une version développe

    Mise à jour du 11/06/10 WebM dans Firefox Le nouveau codec vidéo open-source fait son apparition dans une version développeur du navigateur Jusqu'ici tout le monde était d'accord (sauf Apple) au sujet du WebM, le nouveau codec open-source issu du VP8 de Google. Mais une question de licence (lire par ailleurs) avait posé quelques problèmes pour le début de son implémentation dans les navigateurs. Ces problèmes sont aujourd'hui et réglés et Mozilla tient p...

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  • Resources for setting up a Visual Studio/C++ development environment

    - by Tom H.
    I haven't done much "front-end" development in about 15 years since moving to database development. I'm planning to start work on a personal project using C++ and since I already have MSDN I'll probably end up doing it in Visual Studio 2010. I'm thinking about using Subversion as a version control system eventually. Of course, I'd like to get up and running as quickly as I can, but I'd also like to avoid any pitfalls from a poorly organized project environment. So, my question is, are there any good resources with common best practices for setting up a development environment? I'm thinking along the lines of where to break down a solution into multiple projects if necessary, how to set up a unit testing process, organizing resources, directories, etc. Are there any great add-ons that I should make sure I have set up from the start? Most tutorials just have one simple project, type in your code and click on build to see that your new application says, "Hello World!". This will be a Windows application with several DLLs as well (no web development), so there doesn't need to be a deploy to a web server kind of process. Mostly I just want to make sure that I don't miss anything big and then have to extensively refactor because of it. Thanks!

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