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  • document.getElementById in toString

    - by KooiInc
    edit Found my answers here. Bottom line: toString/valueOf can only return primitive types. So here the lack of native getters in javascript shows, I suppose. I would like to use the following simple function in an elementwrapper: function ElGetter(id){ var id = id; return { set: function(nwid){id = nwid;}, toString: function(){return document.getElementById(id);}, valueOf: function(){return document.getElementById(id);} }; } var myEl = ElGetter('myId'); console.log(myEl.innerHTML); //=> undefined But I can't get it to work. Is it a DOM/javascript restriction or am I missing something? Normally it works, as in: function Tester(){ var x = 1; return { toString: function(){return x}, valueOf: function(){return x} } } var myTest = Tester(); console.log(myTest); //=> 1

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  • binding a usercontrol to the opposite of a bool property

    - by SnOrfus
    Pretty straightforward: I'm looking to do the same as this but in winforms. Everything that google seems to pull up is wpf specific (ie. I don't want to reference presentationframework.dll) Explained if you don't want to read the link: The following is a representation of the intent of what I'd like to do, though it obviously doesn't work. CheckBox1.DataBindings.Add(new Binding("Checked", this.object, "!SomeBool"));

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  • winsock component

    - by Oghenero
    i have a winsock component made with vb.net in a class library that has events. how do i make it appear in tool box if i reference the dll in another project.? How do i use it in my c# program? thanks

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  • Ajax Push Engine

    - by gkrdvl
    Hi all, are there anyone hear about APE (Ajax Push Engine) before ? I'm building Rails application and trying to create group chat with this APE realtime engine, the problem is how to make Rails communicate with APE Server ? Are there any tutorial or reference on working APE with Rails ?

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  • Drawing information from relational databases in Rails

    - by Trip
    I am trying to pull the name of the Artist from the Albums database. These are my two models class Album < ActiveRecord::Base belongs_to :artist validates_presence_of :title validates_length_of :title, :minimum => 5 end class Artist < ActiveRecord::Base has_many :albums end And here is the Albums Controller def index @ albums = Album.all respond_to do |format| format.html # index.html.erb format.xml { render :xml => @albums } end end And the View from the index: <% @albums.each do |album| %> <tr> <td><%=h album.id %></td> <td><%=h album.title %></td> <td><%=h album.artist.name %></td> </tr <% end %> My end result html is coming out like this for the artist field! # and if i set it to artist.name I get this: undefined method `name' for nil:NilClass

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  • How can I get started with PHPUnit, where my class construct requires a preconfigured db connection?

    - by Ben Dauphinee
    I have a class that uses a lot of database internally, so I built the constructor with a $db handle that I am supposed to pass to it. I am just getting started with PHPUnit, and I am not sure how I should go ahead and pass the database handle through setup. public function setUp(/*do I pass a database handle through here, using a reference? aka &$db*/){ $this->_acl = new acl; } public function __construct(Zend_Db_Adapter_Abstract $db, $config = array()){

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  • Why should I use "Web 2.0"-style URLs?

    - by hydrapheetz
    In short, why use something like http://stackoverflow.com/badges/6/supporter instead of something "simpler" (and subjectively, at that) like http://stackoverflow.com/badges/6/. Even on my own site I've just been using /post/6/ to reference posts (by IDs, even though I still store a slug.) Instead of /post/6/small-rant-on-urls, and in some cases, they can get even more absurd, much more so than is really necessary.

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  • How to code feature on checking visitor IP address in PHP ?

    - by justjoe
    i still confused on this subject And ask for any help and reference on how to check visitor IP address via PHP. i'm know it seem lazy to ask something before attempt to code something to show. but right now, i also googling to find it. hopefully someone can give general broad answer or some link to read. btw, what to be consider when we had to code some feature like this ?

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  • Is it possible to call BlazeDS from Java?

    - by Stephane Grenier
    Basically I'm trying to proxy some webservices locally (for reasons I won't go into now) and then have a Java application call it. I'm looking at BlazeDS since it seems to do just this, mostly to avoid the crossDomain.xml file required by Flex to call webservices. However I can't seem to find any reference on how to connect through a Java client (probably using Axis2). Any suggestions, and especially tutorials, would be greatly appreciated.

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  • sandboxed web parts inside SharePoint 2010

    - by vrajaraman
    Is it possible to develop a web-part in ASP.NET (framework 2.0), to have a sandbox architecture, and deploy those web parts inside Share Point 2010 and/or MOSS 2007 we donot want to use any SharePoint dll reference with web parts we develop. we refer to the url, section at http://msdn.microsoft.com/en-us/library/ee539417.aspx (section Web Parts in Sandboxed Solutions)

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  • Kohana -- Command Line

    - by swt83
    I'm trying to "faux-fork" a process (an email being sent via SMTP) in my web application, and the application is built on Kohana. $command = 'test/email'; exec('php index.php '.$command.' > /dev/null/ &', $errors, $response); I'm getting an error -- Notice: Undefined index: SERVER_NAME When I look into Kohana's index.php file, I see that it is looking for a variable named SERVER_NAME, but I guess it is coming up NULL because Kohana couldn't detect this value and set it prior to run. Any ideas how to get Kohana to run via command line?

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  • Loading var from PHP script using flash

    - by webnoob
    Hi All, I am trying to get a var from a PHP script running on my web server and from every forum post I have read, what I am doing should be working. I have the following: var lvContent = new LoadVars(); lvContent.load("http://{MY_DOMAIN}/Includes/getID.php"); trace("ID: " + lvContent.pageID); The problem is that ID in the trace is always undefined. I have tried the following in the php file: <?php echo "pageID=29"; ?> This is a small test to try and get it working but I cannot seem to. Am I doing something wrong? Thanks in advance for the help. I am using ActionScript 2.0

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  • How to generate android styled javadocs ?

    - by Kaillash
    Hi, Is it possible to generate android styled javadocs for my android project (like http://developer.android.com/reference/java/lang/String.html, instead of http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html) Is it something regarding using of some custom doclet instead of standard doclet? If yes, then which one I have to use?

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  • iPhone OS SDK: Possible to download SDK 3.0 w/o Xcode?

    - by Cirrostratus
    I recently downloaded the iPhone SDK 4 along with Xcode and neglected to install 3.0 and 3.1. I've since deleted the install package. I of course can re-download the whole package, but for future reference, I wonder if you are able to download individual SDK versions separately and independent of Xcode, like you would with almost any open source package.

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  • mono in production websites?

    - by sirmak
    Hi, I'm investigating the use of mono in real world high traffic web applications. There are some references on the mono site (companies using mono), but I couldn't find a high traffic website sample other than Deki powered ones. And I've read some mailings about mod_mono stability problems because of inexistence of compacting GC. Please reference your app and give some info, if is there anyone using mono in production. ...or do I have to look at Java ? Regards, sirmak

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  • What versions/flavors of WinZip can be opened by the gnu.java.util.zip.dll v.6.0.140.8?

    - by dreynold
    Evaluating a third party data processing tool, I have bumped into a case where some WinZip files cause an exception: Caused by: gnu.java.util.zip.ZipException: Unknown compression method 98 at gnu.java.util.zip.ZipFile.getInputStream(ZipFile.java:470) I have seen this with files created with WinZip 11.2 and newer. What's the latest version of WinZip (or compatible compression method) that the zip.dll can handle? I've been hunting for some reference on this, but other than unversioned source code, I have had little luck so far.

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  • Abstract classes in shared library

    - by JTom
    Hi, I have an ordinary abstract class that has couple of pure virtual methods. The class itself is a part of the shared library. The compilation of the shared library itself is OK. But when the library is linked to another program that has another class deriving from the abstract one in the shared library and defining the pure virtual methods, I get the following linker error: I compile like this..: g++ -I../path/to/the/library main.cpp derived.cpp -L../path/to/the/library -lsomename -o shared ...and the linker error is: libsomename.so: undefined reference to `AbstractClass::method()' It's like the abstract class cannot access its pure virtual methods but I do not try to make any instance of the abstract class anywhere in the library. What could be the problem?

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  • Is it possible to use Boehm garbage collector only for the part of the program?

    - by bialix
    I've read article in LinuxJournal about Boehm-Demers-Weiser garbage collector library. I'm interesting to use it in my library instead of my own reference counting implementation. I have only one question: is it possible to use gc only for my shared library and still use malloc/free in the main application? I'm not quite understand how gc checks the heap so I'm worrying about performance of gc in that case and possible side effects.

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  • the problem about different treatment to __VA_ARGS__ when using VS 2008 and GCC

    - by liuliu
    I am trying to identify a problem because of an unusual usage of variadic macros. Here is the hypothetic macro: #define va(c, d, ...) c(d, __VA_ARGS__) #define var(a, b, ...) va(__VA_ARGS__, a, b) var(2, 3, printf, “%d %d %d\n”, 1); For gcc, the preprocessor will output printf("%d %d %d\n", 1, 2, 3) but for VS 2008, the output is printf, “%d %d %d\n”, 1(2, 3); I suspect the difference is caused by the different treatment to VA_ARGS, for gcc, it will first expand the expression to va(printf, "%d %d %d\n", 1, 2, 3), and treat 1, 2, 3 as the VA_ARGS for macro va. But for VS 2008, it will first treat b as VA_ARGS for macro va, and then do the expansion. Which one is correct interpretation for C99 variadic macro? or my usage falls into an undefined behavior?

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  • AS3 Accessing Variables of Parent Class From Child

    - by TheDarkIn1978
    i'm trying to assign a parent's variable from the parent's child //Parent public class Main extends Sprite { public var selectedSquare:Sprite; public function Main() { //inits and adds new Square child class to display list } ... ------- //Child public function dragSquare(evt:MouseEvent):void { Sprite(parent).selectedSquare = this; //evil doesn't work! parent.addChild(this); this.startDrag(); } i'm receiving this error, but i'm casting parent from displayObjectContainer to a Sprite so i have no idea why it's not working. 1119: Access of possibly undefined property selectedSquare through a reference with static type flash.display:Sprite.

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  • How do I update with a newly-created detached entity using NHibernate?

    - by Daniel T.
    Explanation: Let's say I have an object graph that's nested several levels deep and each entity has a bi-directional relationship with each other. A -> B -> C -> D -> E Or in other words, A has a collection of B and B has a reference back to A, and B has a collection of C and C has a reference back to B, etc... Now let's say I want to edit some data for an instance ofC. In Winforms, I would use something like this: var instanceOfC; using (var session = SessionFactory.OpenSession()) { // get the instance of C with Id = 3 instanceOfC = session.Linq<C>().Where(x => x.Id == 3); } SendToUIAndLetUserUpdateData(instanceOfC); using (var session = SessionFactory.OpenSession()) { // re-attach the detached entity and update it session.Update(instanceOfC); } In plain English, we grab a persistent instance out of the database, detach it, give it to the UI layer for editing, then re-attach it and save it back to the database. Problem: This works fine for Winform applications because we're using the same entity all throughout, the only difference being that it goes from persistent to detached to persistent again. The problem occurs when I'm using a web service and a browser, sending over JSON data. In this case, the data that comes back is no longer a detached entity, but rather a transient one that just happens to have the same ID as the persistent one. If I use this entity to update, it will wipe out the relationship to B and D unless I sent the entire object graph over to the UI and got it back in one piece. Question: My question is, how do I serialize detached entities over the web, receive them back, and save them, while preserving any relationships that I didn't explicitly change? I know about ISession.SaveOrUpdateCopy and ISession.Merge() (they seem to do the same thing?), but this will still wipe out the relationships if I don't explicitly set them. I could copy the fields from the transient entity to the persistent entity one by one, but this doesn't work too well when it comes to relationships and I'd have to handle version comparisons manually.

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