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  • Using "as" and expecting a null return

    - by DrLazer
    For example. Lets say we have a stackpanel on a form. Its full of both Grids and Labels. I want to loop through all the Grids and do some operation on them but leave the Lables intact. At the moment I am doing it this way. foreach(UIElement element in m_stacker.Children) { Grid block = element as Grid; if(block != null) { //apply changes here } } So i'm using the fact that "as" returns null if it cannot cast into the required type. Is this an ok thing to do or is there a better solution to this problem?

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  • fastest method for minimum of two numbers

    - by user85030
    I was going through mit's opencourseware related to performance engineering. The quickest method (requiring least number of clock cycles) for finding the minimum of two numbers(say x and y) is stated as: min= y^((x^y) & -(x<y)) The output of the expression x < y can be 0 or 1 (assuming C is being used) which then changes to -0 or -1. I understand that xor can be used to swap two numbers. Questions: 1. How is -0 different from 0 and -1 in terms of binary? 2. How is that result used with the and operator to get the minimum? Thanks in advance.

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  • What is the best way to sync multiple client SqlServers to one MS SqlServer 2005?

    - by user605055
    I have several client databases that use my windows application. I want to send this data for online web site. The client databases and server database structure is different because we need to add client ID column to some tables in server data base. I use this way to sync databases; use another application and use C# bulk copy with transaction to sync databases. My server database sql server is too busy and parallel task cannot be run. I work on this solution: I use triggers after update, delete, insert to save changes in one table and create sql query to send a web service to sync data. But I must send all data first! Huge data set (bigger than 16mg) I think can't use replication because the structure and primary keys are different.

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  • How can Java assignment be made to point to an object instead of making a copy?

    - by Matthew Piziak
    In a class, I have: private Foo bar; public Constructor(Foo bar) { this.bar = bar; } Instead of creating a copy of bar from the object provided in the parameter, is it possible to include a pointer to bar in the constructor such that changing the original bar changes the field in this object? Another way of putting it: int x = 7; int y = x; x = 9; System.out.print(y); //Prints 7. It is possible to set it up so that printing y prints 9 instead of 7?

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  • [.NET][C#] - Is possible to get a web with its links (CSS,JavaScript,Images, CSS-Images) ?

    - by Efrain
    Hi there, I am implementing a CMS, the case is that the "Web-Editable" is in a different domain thus, I would be able just get the page using HttpRequest in order to copy and show it in the CMS server to make it able to change it (DOM just visual purpose) and save the changes to the CSS and JavaScript folder on the "Web-Editable" using FTP. I am not allow to download all the information included on the "Web-Editable" trough the FTP, and there are other dinamic images as well comming from a private database. The question is, anyone knows how to make a httprequest "cascade" to get all the 1st level information you see when you visit a Web? Thank you in advance, Efrain

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  • Switching back into the middle of a function in Actionscript

    - by J.Ded.
    I need to return to my original function after capturing an event (downloading something) with another function. The original function needs to return a value, which depends on the downloaded data. So, I'd like to pause original function for the time needed for the download and the eventhandler function to complete it's work, and resume it afterwards. The obvious way is to set a flag value (both the original function and the eventhandler are within the same class) and make the original function check it until the eventhandler function changes the flag. But that would be wasteful, and my AS is slow enough already:) [other parts of the application utilise some heavy graphics]. Is there another way? Like an event that gets captured "in the middle" of the function? Or some other form of flow control?

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  • Hibernate won't autogenerate sequence table

    - by Jason
    I'm trying to use a sequence table to generate keys for my entities. I notice that if I just use the @GeneratedValue(strategy=GenerationType.TABLE) with no explicit generator, Hibernate will automatically create the hibernate_sequences table in my DB if it doesn't exist. This is great. However, I wanted to make some changes to the sequence table, so I created a @TableGenerator like the following: @GeneratedValue(strategy=GenerationType.TABLE, generator="vdat_seq") @TableGenerator(name="vdat_seq", table="VDAT_SEQ", pkColumnName="seq_name", valueColumnName="seq_next_val", allocationSize=1) This works fine if I manually create the VDAT_SEQ table in my schema; Hibernate won't auto-create it anymore. This causes an issue in my unit tests, since I'd rather not have to manually create a table and maintain it on our testing DB. Is there a configuration variable or some other way to get Hibernate to generate the sequence table?

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  • Making simple tabs in android

    - by user2910566
    I am new to Android. I am making a tab Activity that has 3 tabs in it. . I came across reading some interesting articles that tab can be made in three ways:: Regular TabHost Using simple Fragments Using Action Bar Sherlock I have a set of questions Which is a better choice & why ? Which gives more flexibility, efficiency & performance ? Which would be the preferd choice in case of requirement changes happen in future ? My research indicate :: ActionBarsherlock is better ! Is there something better than this ? If so what is it ?

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  • JQuery (1.4.2)/Firefox (3.6.3) - .before and .after not working on div

    - by user355561
    I am trying to have a title bar appear when the user clicks on a box. It works perfectly in I.E. 8.0 but not at all in firefox 3.6.3. HTML [code] @import url('style.css'); blah blah blah save changes [/code] Javascript [code] $(document).ready(function(){ $("#edit2").live('click',function(){ if($("#menu").length == 0){ $("#edit2").before(''); } if($("#menu2").length == 0){ $("#edit2").after(''); } this.contentEditable = true; this.focus(); }); $("#edit2").live('blur',function(){ $("#menu").remove(); //$("#menu2").remove(); this.contentEditable = false; }); }); [/code] Could anyone suggest why it's not working? I have managed to use similar code to add/remove new table rows in both browser but I just can't see why this doesn't also work.

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  • Can Perforce remove a version entry (like ClearCase Destroy)?

    - by Tim
    I submitted a Changelist in Perforce, but I forgot to remove a couple of files from the list first. I want to undo those changes. I understand that Perforce allows me to "rollback" -- but that just submits another change to the file, cluttering my branch. This is a file I did not intend to change at all. When I go to integrate back into the baseline, this file shows up as needing to be integrated (even though it's the same as what's on the baseline). In Clearcase, I had the ability to simply issue a "destroy" command on the specific version of the file, nuking it from the repository, as if had never been (yes, I realize this is scary from a revision control perspective - I understand the risks). Is there an equivalent command in Perforce? Or am I trying to do something expressly forbidden?

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  • .NET applications sometimes doesn’t work on Windows CE

    - by KZChris
    Hi, I write applications for Windowe ME and CE in C# .NET 2.0. Sometimes I’ve got problems because applications don’t work on some navigation devices. On Windowe ME it is not problem because .NET can be installed from a cab, but on most Windows CE devices it is impossible because after soft reset all changes disappear. I found out that in most difficult cases good solution is to put all dll-s belonging to .NET installation cab in the folder where the application runs and everything work well. However there are some devices for example Navroad NR460 (Windows CE 5.0) on which none of .NET applications work (it is funny because previous and next version of that navigation works well). I didn’t found on this device cgacutil.exe program. Is this possible to force the device to run any .NET application without installing the Windows again? What should I try to do to check if running .NET a applications is possible? What conditions should be fulfilled to run easiest application written even in .NET 1.0

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  • Help on choosing which SQL Server 2008 scale-out solution to pick (replication, ...)

    - by usr
    I am currently crossing the jungle of SQL Server scale-out technologies like replication, log-shipping, mirroring... I have the following constraints on my choice: I want the read-only load to be spread accross the primary and the secondary (mirror, subscriber) server Write load can be sent directly to the primary server The solution should be nearly maintainance free. Schema changes should just replicate to the secondary server (attention: replication has some serious constraints here as it seems) Written data should be accessible very quickly (in under 1s, but better would be instantaneously) on the secondary server On server failure I can tollerate up to one hour of data loss easily. I am more concerned with easy scalability Here are some options for what I could pick: http://msdn.microsoft.com/en-us/library/bb510414.aspx. Any experience you could share?

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  • Flash Builder 'building' html files...

    - by Frank
    I'm using Flash Builder 3 to edit my Flex app, but I noticed that every time I make a change on the .html files (index.template.html for example), even if it's not in the IDE but with another program, Flash Builder rebuilds the whole project. Is there anyway to stop this? Why would it need to rebuild the workspace everytime a html file changes? If it was too long it wouldn't bother me, but it takes a lot of time (more than 1 minute) every time. For your information the html file is 95 lines of 'code'. Thanks

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  • Data manipulation without server side

    - by monczek
    Hi, I have to create a very simple webpage to show, filter and add data from not-yet-defined source (probably txt/xml/cvs). Records should be visible as a table, filtered using 3 criteria fields. There should be also possibility to add new records. My first thought was: XHTML + jQuery + csv2table + PicNet Table Filter. It does exactly what I want except adding rows - that is saving changes in source file (probably due to security risk). My question is - is there any possibility to do it without involving server side like asp.net, jee, php, sql? Source file is located on the server. Thanks for your ideas :-)

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  • how to detect datacard connect and disconnect event on win32

    - by Vinayaka Karjigi
    Hi All, I have a data card, as soon as i insert the data card, i am getting the events by using wm_device_change event. But I also want to get event, when my data connect actually connects to out side world. I mean to say, as soon as we click on connect/disconnect button of data card,i want to get the event. exactly speaking wanted to know, when connection is established and disconnected. data card is vodaphone data card and i am trying to browse using that data card. what ever is the SDK, somewhere the OS should get the event of connection and disconnection to network is there any way to access that event which OS is getting. as i can see in notificaiton the changes of vodaphone connection and LAN connection data card is a USB device having SIM within it, and can be used to access internet through GPRS. can i know how to do this in win32 c/c++ programe. with regards Vinayaka Karjigi

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  • A pointer member variable having different values

    - by Rohan Prabhu
    Ok, to begin with, this is my code: HyperSprite::HyperSprite() { _view = 0; } void HyperSprite::publish(QGraphicsView* view) { _view = view; } void HyperSprite::getKFrame() { if(_view != 0) { qDebug()<<(void*)_view; } } Now, if I call HyperSprite::getKFrame() from within main(), I get the output: 0xbf8ffb84 I have a TCP server, which requires this QGraphicsView* variable. So whenever a new connection is made, HyperSprite::getKFrame() is called. However, whenever I make a connection to my server, this is the output: 0x1e425ff I honestly don't understand this. Shouldn't the value of a member remain same throughout? Why is the pointer value changing? As is obvious, whenever I try to use the _view pointer to access any of its members, a Segmentation Fault occurs. I tried using QSharedPointer, but it also results in the same problem. The data of the QSharedPointer automatically changes. Why is this happening?

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  • Same Salt, Different Encrypted Password is not working? Using Linq to update password.

    - by Xaisoft
    Hello, I am running into a wall regarding changing the password and was wondering if anyone had any ideas. Here are the database values prior to changing the password: Clear Text password = abc1980 Encrypted Password = Yn1N5l+4AUqkOM3WYO7ww/sCN+o= Salt = 82qVIhUIoblBRIRvFSZ1fw== After I change my password to abc1973, salt remains the same, but the Encrypted Password changes which is supposed to happen: Encrypted Password = rHtjLq3qxAl/7T1GfkxrsHzPsNk= However, when I try to login with abc1973 as the password, it does not login. If I try abc1980, it logs me in. It is updating the database, is it caching the values somewhere? Any ideas?

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  • Binding an Element to a Control Property (string)

    - by 108980470541437452574
    so, i've found a way to bind a label to a property on current Control i give it a name: <UserControl x:Class="WpfGridtest.GridControl" x:Name="GridControlControl1"> and than bind to property of this control: <Label Content="{Binding ElementName=GridControlControl1, Path=Filter}"></Label> I can see the default value i put in that property. I am guessing that this isn't working because i am binding to String property which doesn't implement INotifyPropertyChanged?? is there some other type i should be using for this property instead of String auto notify my label of changes, or am i going about this the wrong way?

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  • Help me vaildate these points regarding Ruby

    - by Bragaadeesh
    Hi, I have started learning Ruby for the past 2,3 weeks and I have come up with some findings on the language. Can someone please validate these points. Implemented in many other high level languages such as C, Java, .Net etc., Is slow for the obvious reason that it cannot beat any of the already known high level languages. Should never be compared with any other high level language. Not suitable for large applications. Completely open source and is in a budding state. Has a framework called Rails which claims that it would be good for Agile development Community out there is getting better day by day and finding help immediately should not be a problem as time goes by. Has significant changes between releases which many developers wont welcome right away. Running time cannot be comprehensively estimated since the language has several underlying implementation in several languages. Books are always outdated by the time when you finish them. Thanks.

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  • resize image without losing quality with Gimp

    - by madcoderz
    Hi, i have a bunch of images which are way too big i need to decrease their size from 30 kb to 10 or 5 kb without loosing quality. I tried to change the dpi and pixels with no succeed. The images got blurred, and as they have text i can't read anything after the changes. Is there anyway i can accomplish this without loosing quality? I have almost a dozen images in my application. Thanks in advance and have a nice day.

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  • Can I get a patch-compatible output from git-diff?

    - by Malvolio
    I am doing something very simple wrong. I'm trying to prepare an ordinary patch file, so I can reapply some changes: $ git diff > before $ git diff something_here > save.patch $ git checkout . $ patch < save.patch $ git diff > after $ diff before after $ With something_here blank it almost works, but the file names aren't right. I think I'm just I'm missing some option. In real life, I am going to do a merge after the checkout, so the patch might fail there, but you see what I'm getting at.

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  • How to create a snapshot or clone of PHP, MySQL page... Inspiration needed

    - by jimbo
    Hi, We have a web application that creates a dynamic PHP page with all the MySQL stored details a user has entered via a number a forms. So far so good, but we want this information stored some how to be refereed to at a later date, as an administrator can make changes to the data, which reflects on calculations that are worked out from this saved data. When going back over this saved data we need to be able to see all the information submitted for that particular calculation, so if that data has changed we will see what is was relating to that calculation. Now we have thought about maybe a snapshot when the calculation is done, pdf of the webpage or something similar would do, but is this simple to do? I hope this makes sense...

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  • perforce implementation of clearcase like "views"

    - by Pradyot
    I have read through the documentation on perforce and the "branching strategy" advice as well. One thing thats left me baffled, is how a simple concern is does not seem to adequtely adressed. When I am working on a project that touches many parts of our code base , I cannot checkin my code at the end of the day without checking into the trunk. So do I need to branch in this situation? I want to be able to have the ability to have a history of my changes in a long and hard project, so I can go back when I I make a wrong turn.. The problem with branching I see is that I will be creating copies of almost the entire codebase .. Am I missing an obvious solution here? thanks

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  • Django: IE doesn't load locahost or loads very SLOWLY

    - by reedvoid
    I'm just starting to learn Django, building a project on my computer, running Windows 7 64-bit, Python 2.7, Django 1.3. Basically whatever I write, it loads in Chrome and Firefox instantly. But for IE (version 9), it just stalls there, and does nothing. I can load up "http://127.0.0.1:8000" on IE and leave the computer on for hours and it doesn't load. Sometimes, when I refresh a couple of times or restart IE it'll work. If I change something in the code, again, Chrome and Firefox reflects changes instantly, whereas IE doesn't - if it loads the page at all. What is going on? I'm losing my mind here....

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  • Java using enum with switch statement

    - by MisterSquonk
    I've looked at various Q&As on SO similar to this question but haven't found a solution. What I have is an enum which represents different ways to view a TV Guide... static enum guideView { GUIDE_VIEW_SEVEN_DAY, GUIDE_VIEW_NOW_SHOWING, GUIDE_VIEW_ALL_TIMESLOTS } ...when the user changes the view an event handler receives an int from 0-2 and I'd like to do something like this... // 'which' is an int from 0-2 switch (which) { case NDroid.guideView.GUIDE_VIEW_SEVEN_DAY: ... break; } I'm used to C# enums and select/case statements which would allow something like the above and I know Java does things differently but I just can't make sense of what I need to do. Am I going to have to resort to if statements? There will likely only ever be 3 choices so I could do it but I wondered how it could be done with switch-case in Java.

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