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  • Get table row based on radio button using prototype/javascript

    - by David Buckley
    I have an html table that has a name and a radio button like so: <table id="cars"> <thead> <tr> <th>Car Name</th> <th></th> </tr> </thead> <tbody> <tr> <td class="car">Ford Focus</td> <td><input type="radio" id="selectedCar" name="selectedCar" value="8398"></td> </tr> <tr> <td class="car">Lincoln Navigator</td> <td><input type="radio" id="selectedCar" name="selectedCar" value="2994"></td> </tr> </tbody> </table> <input type="button" value="Select Car" onclick="selectCar()"></input> I want to be able to select a radio button, then click another button and get the value of the radio button (which is a unique ID) as well as the car name text (like Ford Focus). How should I code the selectCar method? I've tried a few things like: val1 = $('tr input[name=selectedCar]:checked').parent().find('#cars').html(); val1 = $("td input[name='selectedCar']:checked").parents().find('.cars').html(); val1 = $('selectedCar').checked; but I can't get the proper values. I'm using prototype, but the solution can be plain javascript as well.

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  • Python: How do I pass a variable by reference?

    - by David Sykes
    The Python documentation seems unclear about whether parameters are passed by reference or value, and the following code produces the unchanged value 'Original' class PassByReference: def __init__(self): self.variable = 'Original' self.Change(self.variable) print self.variable def Change(self, var): var = 'Changed' Is there something I can do to pass the variable by actual reference? Update: I am coming to the conclusion that while Andrea answered my actual question (Can you... No but you can...), on the subject of pass by reference Blair Conrad is more technically correct. As I understand it the crux is that a copy of a reference is being passed. If you assign that copy, as in my example, then you lose the reference to the original and it remains unchanged. If, however, you 'use' that reference, for example append on a passed list, then the original is changed. I will see how the comments and votes go before choosing the answer people think is the best

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  • Weird camera Intent behavior

    - by David Erosa
    Hi all. I'm invoking the MediaStore.ACTION_IMAGE_CAPTURE intent with the MediaStore.EXTRA_OUTPUT extra so that it does save the image to that file. On the onActivityResult I can check that the image is being saved in the intended file, which is correct. The weird thing is that anyhow, the image is also saved in a file named something like "/sdcard/Pictures/Camera/1298041488657.jpg" (epoch time in which the image was taken). I've checked the Camera app source (froyo-release branch) and I'm almost sure that the code path is correct and wouldn't have to save the image, but I'm a noob and I'm not completly sure. AFAIK, the image saving process starts with this callback (comments are mine): private final class JpegPictureCallback implements PictureCallback { ... public void onPictureTaken(...){ ... // This is where the image is passed back to the invoking activity. mImageCapture.storeImage(jpegData, camera, mLocation); ... public void storeImage(final byte[] data, android.hardware.Camera camera, Location loc) { if (!mIsImageCaptureIntent) { // Am i an intent? int degree = storeImage(data, loc); // THIS SHOULD NOT BE CALLED WITHIN THE CAPTURE INTENT!! ....... // An finally: private int storeImage(byte[] data, Location loc) { try { long dateTaken = System.currentTimeMillis(); String title = createName(dateTaken); String filename = title + ".jpg"; // Eureka, timestamp filename! ... So, I'm receiving the correct data, but it's also being saved in the "storeImage(data, loc);" method call, which should not be called... It'd not be a problem if I could get the newly created filename from the intent result data, but I can't. When I found this out, I found about 20 image files from my tests that I didn't know were on my sdcard :) I'm getting this behavior both with my Nexus One with Froyo and my Huawei U8110 with Eclair. Could please anyone enlight me? Thanks a lot.

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  • A follow up on type coercion in C++, as it may be construed by type conversion

    - by David
    This is a follow up to my previous question. Consider that I write a function with the following prototype: int a_function(Foo val); Where foo is believed to be a type defined unsigned int. This is unfortunately not verifiable for lack of documentation. So, someone comes along and uses a_function, but calls it with an unsigned int as an argument. Here the story takes a turn. Foo turns out to actually be a class, which can take an unsigned int as a single argument of unsigned int in an explicit constructor. Is it a standard and reliable behavior for the compiler to render the function call by doing a type conversion on the argument. I.e. is the compiler supposed to recognize the mismatch and insert the constructor? Or should I get a compile time error reporting the type mismatch.

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  • Flex NetConnection error: Property onDirtyList not found on flash.net.NetConnection

    - by David Wolever
    I'm having some trouble with NetConnection. The following code makes a connection without issue… var n:NetConnection = new NetConnection(); n.objectEncoding = ObjectEncoding.AMF0; n.addEventListener(NetStatusEvent.NET_STATUS, function(...args):void { trace("HERE"); }); n.connect("rtmp://...host...", ...args); But as soon as the NET_STATUS event handler finishes (ie, hitting "step into" with the debugger), I get this error: ReferenceError: Error #1069: Property onDirtyList not found on flash.net.NetConnection and there is no default value. Error #2044: Unhandled AsyncErrorEvent:. text=Error #2095: flash.net.NetConnection was unable to invoke callback onDirtyList. error=ReferenceError: Error #1069: Property onDirtyList not found on flash.net.NetConnection and there is no default value. at Test/___Test_Application1_creationComplete()[/Users/wolever/Workspace/Test/src/Test.mxml:13] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9440] at mx.core::UIComponent/set initialized()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\core\UIComponent.as:1168] at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:718] at Function/http://adobe.com/AS3/2006/builtin::apply() at mx.core::UIComponent/callLaterDispatcher2()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8744] at mx.core::UIComponent/callLaterDispatcher()[C:\autobuild\3.5.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8684] Which is kind of scary because onDirtyList only yields two hits on Google. So... Any suggestions?

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  • Count how many divs has a specific content?

    - by David
    I want to count how many divs with the class .tool that contain the following html by example : <b>Photoshop</b> <div class="tool"><b>After Effects</b></div> <div class="tool"><b>Photoshop</b></div> <div class="tool"><b>Illustrator</b></div> <div class="tool"><b>Photoshop</b></div> <div class="tool"><b>Photoshop</b></div> // This would return 3 How to do that using jQuery? i only can count all .tool divs? Thanks

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  • Qt - invalid conversion to child class

    - by David Davidson
    I'm drawing polygons using the Graphics View framework. I added a polygon to the scene with this: QGraphicsPolygonItem *poly = scene->addPolygon(QPolygonF(vector_of_QPointF)); poly->setPos(some_point); But I need to implement some custom behaviour like selection, mouse over indicator, and other similar stuff on the graphics item. So I declared a class that inherits QGraphicsPolygonItem: #include <QGraphicsPolygonItem> class GridHex : public QGraphicsPolygonItem { public: GridHex(QGraphicsItem* parent = 0); }; GridHex::GridHex(QGraphicsItem* parent) : QGraphicsPolygonItem(parent) { } Not doing much with that class so far, as you can see. But shouldn't replacing QGraphicsPolygonItem with my GridHex class? This is throwing a " invalid conversion from 'QGraphicsPolygonItem*' to 'GridHex*' " error: GridHex* poly = scene->addPolygon(QPolygonF(vector_of_QPointF)); What am I doing wrong?

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  • Why GLatLng() doesn't receive variables?

    - by David
    Hi, i have the following code to update a google map: function updateit(c1,c2){ alert(c1+"-"+c2); // This works map.setCenter(new GLatLng(c1, c2), 13); // But this doesn't } updateit(37.4419, -122.1419); The alert is working and show the two coordinations, but i think the GLatLng() doesn't receive them, so the map is not updated unless i directly declare them as strings : function updateit(c1,c2){ map.setCenter(new GLatLng(37.4419, -122.1419), 13); // This works } How to fix this problem? Thanks

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  • Can this jQuery code snippet be shortened?

    - by David Vidmar
    I have just stared using jQuery and although following code gets the job done, I have a feeling that it can be shortened. var accountAddress = $(document.createElement("input")).addClass("readOnly").attr("contentEditable", "false").attr("id", "d_accountAddress"); $("#customerid_c").next().next().next().append(accountAddress); If it is not clear - what I'm doing is creating new input tag, assigning class and making it readonly, then positioning new input two TD's to the right of some known text.

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  • Implement a custom editor in Visual Studio 2008 or 2010

    - by David Montgomery
    Hi, I'm trying to find documentation on how one would go about creating a custom editor plug-in for VS2008 or VS2010. The file syntax I want to edit is from a tool called TemplateMaschine by Stefan Sarstedt. An example of the template syntax: <%@ Assembly Name="System.Xml" %> <%@ Import NameSpace="System.Xml" %> <%@ Import NameSpace="System.Collections" %> <%@ Argument Name="className" Type="string" %> <%@ Argument Name="attributes" Type="ArrayList" %> public class <%=className%> { <% foreach(string attr in attributes) { %> public string <%=attr%>; <% } %> } The most important editor features for me would be real-time syntax checking and code completion. If we could get those features, it would save us THOUSANDS of man-hours. Failing to incorporate a custom editor into Studio, maybe there is some open source text editor project out there that might be easy to extend for my purposes? I've looked a little at Eclipse, but I would think code completion won't be an option (also, my Java stinks). Another possibility might be extending the SharpDevelop text editor component. Ideas and suggestions welcome!

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  • Good tools for keeping the content in test/staging/live environments synchronized

    - by David Stratton
    I'm looking for recommendations on automated folder synchronization tools to keep the content in our three environments synchronized automatically. Specifically, we have several applications where a user can upload content (via a File Upload page or a similar mechanism), such as images, pdf files, word documents, etc. In the past, we had the user doing this to our live server, and as a result, our test and staging servers had to be manually synchronized. Going forward, we will have them upload content to the staging server, and we would like some software to automatically copy the files off to the test and live servers EITHER on a scheduled basis OR as the files get uploaded. I was planning on writing my own component, and either set it up as a scheduled task, or use a FileSystemWatcher, but it occurred to me that this has probably already been done, and I might be better off with some sort of synchronization tool that already exists. On our web site, there are a limited number of folders that we want to keep synchronized. In these folders, it is an all or nothing - we want to make sure the folders are EXACT duplicates. This should make it fairly straightforward, and I would think that any software that can synchronize folders would be OK, except that we also would like the software to log changes. (This rules out simple BATCH files.) So I'm curious, if you have a similar environment, how did you solve the challenge of keeping everything synchronized. Are you aware of a tool that is reliable, and will meet our needs? If not, do you have a recommendation for something that will come close, or better yet, an open source solution where we can get the code and modify it as needed? (preferably .NET). Added Also, I DID google this first, but there are so many options, I am interested mostly in knowing what actually works well vs what they SAY works, which is why I'm asking here.

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  • asp.net: Where can I put my source files.

    - by David Sykes
    I am developing a web form using Visual Web Developer Currently I have class source files in the same directory as the web form, or in the App_Code folder. I'd like to organise the files into folders within the web form folder, but I can't find a way of adding a reference to the folders, and they don't seem to be being picked up automatically. These are files that are under constant development. What is the asp.net/c#'s equivalent concept to c++'s #include?

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  • javascript change innerhtml

    - by David
    ok im new at javascript, but im trying to change the innerhtml of a div tag, heres my script and its not working: <head> <script type="text/javascript"> function var1() { document.getElementById('test').innerHTML = 'hi'; } window.onLoad = var1(); </script> </head> <body> <div id="test">change</div> </body> it should work but for some reason its not, any help?

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  • Casting Generic Types

    - by David Rutten
    Public Function CastToT(Of T)(ByVal GenericType(Of Object) data) As GenericType(Of T) Return DirectCast(data, GenericType(Of T)) End Function The above clearly does not work. Is there any way to perform this cast if I know that all objects inside data are in fact of Type T?

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  • Unit Testing-- fundamental goal?

    - by David
    Me and my co-workers had a bit of a disagreement last night about unit testing in our PHP/MySQL application. Half of us argued that when unit testing a function within a class, you should mock everything outside of that class and its parents. The other half of us argued that you SHOULDN'T mock anything that is a direct dependancy of the class either. The specific example was our logging mechanism, which happened through a static Logging class, and we had a number of Logging::log() calls in various locations throughout our application. The first half of us said the Logging mechanism should be faked (mocked) because it would be tested in the Logging unit tests. The second half of us argued that we should include the original Logging class in our unit test so that if we make a change to our logging interface, we'll be able to see if it creates problems in other parts of the application due to failing to update the call interface. So I guess the fundamental question is-- do unit tests serve to test the functionality of a single unit in a closed environment, or show the consequences of changes to a single unit in a larger environment? If it's one of these, how do you accomplish the other?

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  • PHP Doesn't Display Errors or Warnings.

    - by David
    I don't know how php.ini was configured since I don't have access to it. But on top of my php code file I have error_reporting(E_ALL); ini_set('display_errors', '1'); But still, if there is an error, e.g. missing a ")", the page is blank. It is so painful to debug without error message. Why were the errors not shown?

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