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• ctypes import not working on python 2.5

  - by user551906

  Hi, I am trying to import ctypes, and I am using Python 2.5.5 installed using macports (on Mac OS X 10.6). I get an error saying "ImportError: No module named _ctypes" (see details below). As I understand it ctypes is supposed to come preinstalled for python 2.5. Any suggestions? thanks, Saurabh Error details: $ python Python 2.5.5 (r255:77872, Nov 30 2010, 00:05:47) [GCC 4.2.1 (Apple Inc. build 5659)] on darwin Type "help", "copyright", "credits" or "license" for more information. import ctypes Traceback (most recent call last): File "", line 1, in File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/ctypes/init.py", line 10, in from _ctypes import Union, Structure, Array ImportError: No module named _ctypes

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• I get "stack level too deep" error when using a named scope

  - by Brian Roisentul

  I'm using ruby on rails 2.3.8 and when I write the syntax shown below I get the "stack level too deep" error message. The model is called Announcement and the line of the error looks like this: Tag.find(category_id).announcements.published Where published is named_scope :published, :conditions => "announcements.state = 'published'" I use this named scope in many other places and it works fine. What am I doing wrong? (the relationship between Tag and Announcement model is ok because if I remove the ".published" method from that line it works just fine).

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• SQLiteOpenHelper getWritableDatabse() fails with no Exception

  - by Michal K

  I have a very strange problem. It only shows from time to time, on several devices. Can't seem to reproduce it when I want, but had it so many times, that I think I know where I get it. So I have a Loader which connects to sqlite through a singleton SQLiteOpenHelper: try{ Log.i(TAG, "Get details offline / db helper: "+DatabaseHelper.getInstance(getContext())); SQLiteDatabase db=DatabaseHelper.getInstance(this.getContext()).getWritableDatabase(); Log.i(TAG, "Get details offline / db: "+db); //doing some work on the db //... } catch(SQLiteException e){ e.printStackTrace(); return null; } catch(Exception e){ e.printStackTrace(); return null; //trying everything to grab some exception or whatever } My SQLIteOpenHelper looks something like this: public class DatabaseHelper extends SQLiteOpenHelper { private static DatabaseHelper mInstance = null; private static Context mCxt; public static DatabaseHelper getInstance(Context cxt) { //using app context ass suggested by CommonsWare Log.i("DBHELPER1", "cxt"+mCxt+" / instance: "+mInstance); if (mInstance == null) { mInstance = new DatabaseHelper(cxt.getApplicationContext()); } Log.i("DBHELPER2", "cxt"+mCxt+" / instance: "+mInstance); mCxt = cxt; return mInstance; } //private constructor private DatabaseHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); this.mCxt = context; } @Override public void onCreate(SQLiteDatabase db) { //some tables created here } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { //upgrade code here } It really works great in most cases. But from time to time I get a log similar to this: 06-10 23:49:59.621: I/DBHELPER1(26499): cxtcom.bananout.Bananout@407152c8 / instance: com.bananout.helpers.DatabaseHelper@40827560 06-10 23:49:59.631: I/DBHELPER2(26499): cxtcom.bananout.Bananout@407152c8 / instance: com.bananout.helpers.DatabaseHelper@40827560 06-10 23:49:59.631: I/DetailsLoader(26499): Get event details offline / db helper: com.bananout.helpers.DatabaseHelper@40827560 06-10 23:49:59.631: I/DBHELPER1(26499): cxtcom.bananout.Bananout@407152c8 / instance: com.bananout.helpers.DatabaseHelper@40827560 06-10 23:49:59.651: I/DBHELPER2(26499): cxtcom.bananout.Bananout@407152c8 / instance: com.bananout.helpers.DatabaseHelper@40827560 This line Log.i(TAG, "Get details offline / db: "+db); never gets called! No Exceptions, silence. Plus, the thread with the Loader is not running anymore. So nothing past this line SQLiteDatabase db=DatabaseHelper.getInstance(this.getContext()).getWritableDatabase(); gets executed. What can possibly go wrong on this line?

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• Azure Blobs - ArgumentNullException when calling UploadFile()

  - by Ariel

  I’m getting the following exception when trying to upload a file with the following code: string encodedUrl = "videos/Sample.mp4" CloudBlockBlob encodedVideoBlob = blobClient.GetBlockBlobReference(encodedUrl); Log(string.Format("Got blob reference for {0}", encodedUrl), EventLogEntryType.Information); encodedVideoBlob.Properties.ContentType = contentType; encodedVideoBlob.Metadata[BlobProperty.Description] = description; encodedVideoBlob.UploadFile(localEncodedBlobPath); I see the "Got blob reference" message, so I assume the reference resolves correctly. Void Run() C:\Inter\Projects\PoC\WorkerRole\WorkerRole.cs (40) System.ArgumentNullException: Value cannot be null. Parameter name: value at Microsoft.WindowsAzure.StorageClient.Tasks.Task`1.get_Result() at Microsoft.WindowsAzure.StorageClient.Tasks.Task`1.ExecuteAndWait() at Microsoft.WindowsAzure.StorageClient.CloudBlob.UploadFromStream(Stream source, BlobRequestOptions options) at Microsoft.WindowsAzure.StorageClient.CloudBlob.UploadFile(String fileName, BlobRequestOptions options) at EncoderWorkerRole.WorkerRole.ProcessJobOutput(IJob job, String videoBlobToEncodeUrl) in C:\Inter\Projects\PoC\WorkerRole\WorkerRole.cs:line 144 at EncoderWorkerRole.WorkerRole.Run() in C:\Inter\Projects\PoC\WorkerRole\WorkerRole.cs:line 40 Interestingly, I'm running that same snippet from an on-premises server i.e., outside of Azure and it works correctly. Ideas welcome, thanks!

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• Simple XML parsing error

  - by phpeffedup

  I'm trying to iterate through a Twitter XML File, where the container tag is , and each user is . I need to create a variable $id based on the XML attribute for each user. Username is already instantiated. $url = "http://api.twitter.com/1/statuses/friends/$username.xml"; $xmlpure = file_get_contents($url); $listxml = simplexml_load_string($xmlpure); foreach($listxml->users->children() as $child) { $id = $child->{"id"}; //Do another action } But I'm getting this error: Warning: main() [function.main]: Node no longer exists in /home/.../bonus.php on line 32 Line 32 is the foreach statement, and I don't actually USE the main() method. What am I doing wrong?

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• java reflection

  - by user622222

  Hi all, System.out.println("Class name : "); BufferedReader reader= new BufferedReader(new InputStreamReader(System.in)); String line = reader.readLine(); Class<?> writeoutClass = Class.forName(line); Method Writeout = null; for (Method mth : writeoutClass.getDeclaredMethods()) { if (mth.getName().startsWith("Writeout")) { Writeout = mth; break; } It's giving error like that; java.lang.ClassNotFoundException: a How can i generate that class?

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• How do I propagate an exception thrown by croak in forked child to parent/foreground process?

  - by Pedro Silva

  Throwing an exception via croak in a forked child process seems to print the error as a background process would. That is, it clobbers the shell prompt. If I die instead of croak, the the error message pops up as a foreground process. I've trying to find out why that is in the Carp documentation without any luck. Here's what I mean. The croak version: $ perl Wrapper.pm $ error: ... does not exist at Wrapper.pm line 624 The die version: $ perl Wrapper.pm error: ... does not exist at Wrapper.pm line 515. I tried trapping the fork and printing $@ to STDERR and exiting, but that didn't have an effect. Any ideas? I'd like to be able to use croak in this particular case.

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• Are there any modern GUI toolkits which implement a heirarchical menu buffer zone?

  - by scomar

  In Bruce Tognazzini's quiz on Fitt's Law, the question discussing the bottleneck in the hierarchical menu (as used in almost every modern desktop UI), talks about his design for the original Mac: The bottleneck is the passage between the first-level menu and the second-level menu. Users first slide the mouse pointer down to the category menu item. Then, they must carefully slide the mouse directly across (horizontally) in order to move the pointer into the secondary menu. The engineer who originally designed hierarchicals apparently had his forearm mounted on a track so that he could move it perfectly in a horizontal direction without any vertical component. Most of us, however, have our forarms mounted on a pivot we like to call our elbow. That means that moving our hand describes an arc, rather than a straight line. Demanding that pivoted people move a mouse pointer along in a straight line horizontally is just wrong. We are naturally going to slip downward even as we try to slide sideways. When we are not allowed to slip downward, the menu we're after is going to slam shut just before we get there. The Windows folks tried to overcome the pivot problem with a hack: If they see the user move down into range of the next item on the primary menu, they don't instantly close the second-level menu. Instead, they leave it open for around a half second, so, if users are really quick, they can be inaccurate but still get into the second-level menu before it slams shut. Unfortunately, people's reactions to heightened chance of error is to slow down, rather than speed up, a well-established phenomenon. Therefore, few users will ever figure out that moving faster could solve their problem. Microsoft's solution is exactly wrong. When I specified the Mac hierarchical menu algorthm in the mid-'80s, I called for a buffer zone shaped like a <, so that users could make an increasingly-greater error as they neared the hierarchical without fear of jumping to an unwanted menu. As long as the user's pointer was moving a few pixels over for every one down, on average, the menu stayed open, no matter how slow they moved. (Cancelling was still really easy; just deliberately move up or down.) This just blew me away! Such a simple idea which would result in a huge improvement in usability. I'm sure I'm not the only one who regularly has the next level of a menu slam shut because I don't move the mouse pointer in a perfectly horizontal line. So my question is: Are there any modern UI toolkits which implement this brilliant idea of a < shaped buffer zone in hierarchical menus? And if not, why not?!

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• BASH: Checking for environment variables

  - by Hamza

  Hi folks, I am trying to check the value of an environment variable and depending on the value do certain things and it works fine as long as the variable is set. When it isn't though I get a whole bunch of errors (as BASH is trying to compare the string I specify with an undefined variable, I guess) I tried implementing an extra check to prevent it happening but no luck. The block of code I am using is: #!/bin/bash if [ -n $TESTVAR ] then if [ $TESTVAR == "x" ] then echo "foo" exit elif [ $TESTVAR == "y" ] then echo "bar" exit else echo "baz" exit fi else echo -e "TESTVAR not set\n" fi And this the output: $ export TESTVAR=x $ ./testenv.sh foo $ export TESTVAR=y $ ./testenv.sh bar $ export TESTVAR=q $ ./testenv.sh baz $ unset TESTVAR $ ./testenv.sh ./testenv.sh: line 5: [: ==: unary operator expected ./testenv.sh: line 9: [: ==: unary operator expected baz My question is, shouldn't 'unset TESTVAR' nullify it? It doesn't seem to be the case... Thanks.

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• Help with Magento and related products

  - by Anthony

  I have a customer product page that literally lives beside the catalog/product/view.phtml page. It's basically identical to that page with a few small exceptions. It's basically a 'product of the day' type page so I can't combine it with the regular product page since I have to fetch the data from the DB and perform a load to get the product information $_product = Mage::getModel('catalog/product')->load($row['productid']); To make a long story short, everything works (including all children html blocks) with the singular exception of the related products. After the load I save the product into the registry with Mage::register('product', $_product); and then attempt to load the related products with: echo $this->getLayout()->createBlock('catalog/product_view')->setTemplate('catalog/product/list/related.phtml')->toHtml();` All of which give back the error: Fatal error: Call to a member function getSize() on a non-object in catalog/product/list/related.phtml on line 29`, and line 29 is <?php if($this->getItems()->getSize()): ?>`. Any help getting the relateds to load would be appreicated.

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• How to concatenate multiple lines of log file into single variable in batch file?

  - by psych

  I have a log file containing a stack trace split over a number of lines. I need to read this file into a batch file and remove all of the lines breaks. As a first step, I tried this: if exist "%log_dir%\Log.log" ( for /F "tokens=*" %%a in ("%log_dir%\Log.log") do @echo %%a ) My expectation was that this would echo out each line of the log file. I was then planning to concatenate these lines together and set that value in a variable. However, this code doesn't do what I would expect. I have tried changing the value of the options for delims and tokens, but the only output I can get is the absolute path to the log file and nothing from the contents of this file. How can I set a variable to be equal to the lines of text in a file with the line breaks removed?

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• .Net Custom Components "disappear" after file save

  - by EatATaco

  I might have a hard time explaining this because I am at a total loss for what is happening so I am just looking for some guidance. I might be a bit wordy because I don't know exactly what is the relevant information. I am developing a GUI for a project that I am working on in using .Net (C#) Part of the interface mimics, exactly, what we do in another product. For consistency reasons, my boss wants me to make it look the same way. So I got the other software and basically copied and pasted the components into my new GUI. This required me to introduce a component library (the now defunct Graphics Server GSNet, so I can't go to them for help) so I could implement some simple graphs and temperature/pressure "widgets." The components show up fine, and when I compile, everything seems to work fine. However, at some point during my programming it just breaks. Sometimes the tab that these components are on starts throwing exceptions when I view the designer page (A missing method exception) so it won't display. Sometimes JUST those components from the GSNet library don't show up. Sometimes, if I try to run it, I get a not-instantiated exception on one of their lines of code in the designer code file. Sometimes I can't view the designer at all. No matter what I do I can't reverse it. Even if I undo what I just did it won't fix it. If it happens, I have to revert to a backup and start over again. So I started to backup pretty much every step. I compile it and it works. I comment out a line of code, save it, and then uncomment that same line of code (so I am working with the same exact code) and the components all disappear. It doesn't matter what line of code I actually comment out, as long as it is in the same project that these components are being used. I pretty much have to use the components. . . so does anyone have any suggestion or where I can look to debug this?

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• Vertically center CSS techniques don't work in Chrome

  - by at.

  I've gone through stackoverflow questions and a whole bunch of articles on vertically centering text like the following: http://blog.themeforest.net/tutorials/vertical-centering-with-css/ None of the techniques seem to work with the latest version of Chrome. Is that just the nature of Chrome? My text just always appears at the top. It seems that whenever I use 50% or 100% as values for CSS's height or top, nothing happens. I just need a single line of text vertically centered. line-height isn't helpful because I want it centered in the middle of the browser window... I don't know how tall the browser window is going to be. UPDATE: The problem is apparently Foundation 4. Once I delete the following everything works as expected: <link href="/assets/foundation_and_overrides.css?body=1" media="screen" rel="stylesheet" /> Any idea on how to make it work with Foundation 4?

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• Programmatically using tab character in .NET?

  - by Joan Venge

  Is there a way to use a tab character like a new line character inside Environment class, instead of using "\t"?

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• may be python error!!!

  - by bahar

  Hi I'm not familiar with python, I just want to check something so I tried to run a .py code in linux so I wrote : ./waf wifi-olsr-flowmon --plot which is a .py program after that whatever I want to run just see these error: /home/bahar/Desktop/ns/ns-allinone-3.9/ns-allinone-3.9/ns-3.9/wscript: error: Traceback (most recent call last): File "/home/bahar/Desktop/ns/ns-allinone-3.9/ns-allinone-3.9/ns-3.9/.waf-1.5.16-e6d03192b5ddfa5ef2c8d65308e48e42/wafadmin/Utils.py", line 197, in load_module exec(compile(code,file_path,'exec'),module.__dict__) File "/home/bahar/Desktop/ns/ns-allinone-3.9/ns-allinone-3.9/ns-3.9/wscript", line 32, in <module> import cflags # override the build profiles from waf ImportError: No module named cflags I dont know what does it mean or why it happened, would you please tell me what is the problem . Bests

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• Problem with basic program using Boost Threads in c++

  - by Eternal Learner

  I have a simple program which creates and executes as thread using boost threads in c++. #include<boost/thread/thread.hpp> #include<iostream> void hello() { std::cout<<"Hello, i am a thread"<<std::endl; } int main() { boost::thread th1(&hello); th1.join(); } The compiler throws an error against the th1.join() line. It says " Multiple markers at this line - undefined reference to `boost::thread::join()' - undefined reference to `boost::thread::~thread()' "

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• CSV file read fail (PHP )

  - by user1020069

  I am trying to read a csv file (delimited by commas) but unfortunately, it isn't responding as it ought to. I am not so sure what I am doing wrong here, but I'll paste out the contents of the code and the CSV file both : $row = 0; if($handle = fopen("SampleQuizData.csv","r") !== FALSE) { // WORKS UNTIL HERE, SO FILE IS BEING READ while(!feof(handle)){ $line = fgetcsv($handle, 1024, ",") ; echo $line[2]; // DOES NOT WORK } } And the CSV file is (the emails and names have been changed here to protect the identities of the users) parijat,something,[email protected] matthew,durp, [email protected] steve,vai,[email protected] rajni,kanth,[email protected]

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• Use a cat + grep as an included source in bash

  - by Andrew

  I'm on a shared webhost where I don't have permission to edit the global bash configuration file at /ect/bashrc. Unfortunately there is one line in the global file, mesg y, which puts the terminal in tty mode and makes scp and similar commands unavailable. My local ~./bashrc includes the global file as a source, like so: # Source global definitions if [ -f /etc/bashrc ]; then . /etc/bashrc fi My current workaround uses cat and grep to output the global file, sans offending line, into a local file and use that as a source. # Source global definitions if [ -f /etc/bashrc ]; then cat /etc/bashrc | grep -v mesg > ~/.bash_global . ~/.bash_global fi Is there a way to do include a grokked file like this without the intermediate step of creating an actual file? Something like this? . cat /etc/bashrc | grep -v mesg > ~/.bash_global

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• Vertically align UILabel

  - by Ashish Agarwal

  I am trying to vertically align the text in the UILabel view of my app. The problem is that I want the text to be vertically aligned to the top and the size of the label to be 280 x 150. I am only able to achieve one of these 2 things. If I remove the line [myLabel sizeToFit]; then the alignment of the text is alright but the size is messed up. But if I add the above line, then the alignment is messed up but the size is alright. How do I fix this problem. I've added the code below - CGRect labelFrame = CGRectMake(22, 50, 280, 150); UILabel *myLabel = [[UILabel alloc] initWithFrame:labelFrame]; [myLabel setText:finalRecipe]; [myLabel setBackgroundColor: [UIColor lightGrayColor]]; [myLabel setNumberOfLines:0]; [myLabel sizeToFit]; [self.view addSubview:myLabel];

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• Hot to log in to a website using installed twill?

  - by brilliant

  Hello, everybody!!!! I have just successfully installed TWILL on my computer with the help of one very supportive member of "StackOverflow" (you can check it out HERE) and have tried to run one of the simple examples on the twill documentation page (you can see that page HERE). Here is that example: Let's say my username on www.slash.org is lynxye and my password is mammal. When I try to enter that exanple code into my Python prompt, I can only enter the first line of the code bexcause when I click on "Enter" to start a new line, I get some error messages right away: The same happens when I try to enter this code into my terminal: I think I miss out on some basics here. Perhaps, I need to create a file that would contain that code and then run that file somehow, but I really don't know where I need to create that file and with what extensdion. Can anyone, please, help me with this?

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• SvcUtil and /dconly generates XSD's for data types NOT marked with the DataContract attribute.

  - by Bellerephon

  Has anyone ever encountered a problem with Svcutil and the /dconly option where it generates metadata for EVERY data type in an Assembly, even if it is NOT marked with with the [DataContract()] attribute? It also appears to be generating metadata for types only referenced in the code, such as XmlDictionaryReaderQuotas even though these are not a part of the physical assembly that I generated metadata on. Some info: Using the .NET 4.0 version of SvcUtil. Does not matter if class is empty or not. No references are specified in the command line for SvcUtil. Command line: "C:\In Progress Work (Prospective)\Prospective Server\Prospective Server\Management\Prospective.Server.Server.NET40.Debug.AnyCPU.dll" /nologo /t:metadata /d:"C:\In Progress Work (Prospective)\Prospective Server\Prospective Server\Management" /dconly

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• Forcing A Postback Asp.Net

  - by Nick LaMarca

  Please take a look at the following click event... Protected Sub btnDownloadEmpl_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDownloadEmpl.Click Dim emplTable As DataTable = SiteAccess.DownloadEmployee_H() Dim d As String = Format(Date.Now, "d") Dim ad() As String = d.Split("/") Dim fd As String = ad(0) & ad(1) Dim fn As String = "E_" & fd & ".csv" Response.ContentType = "text/csv" Response.AddHeader("Content-Disposition", "attachment; filename=" & fn) CreateCSVFile(emplTable, Response.Output) Response.Flush() Response.End() lblEmpl.Visible = True End Sub This code simply exports data from a datatable to a csv file. The problem here is lblEmpl.Visible=true never gets hit because this code doesnt cause a postback to the server. Even if I put the line of code lblEmpl.Visible=true at the top of the click event the line executes fine, but the page is never updated. How can I fix this?

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• Current position of file pointer in C

  - by En_t8

  How can I get the current line position of the file pointer?

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• simple modification results in error

  - by lgwest

  When I tried to do a simple modification of the "hello android" program that eclipse adt plugin generates I get error and can't get the program to run again even if I restore the file to its original contents. The modification was that I changed a string in strings.xml. the line was: <string name="app_name">Todo List</string> and the app was runnable, then I changed it to <string name="app_name">Todo List1</string> and it was an error: [2010-04-21 23:18:03 - Todo_list] Error in an XML file: aborting build. And a new empty file also showed up called: strings.out.xml And then I can't get the prrogram back into runnable state even if I delete the empyt file and restore the original line, I'm a confused beginner of java, android and eclipse.

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• Non-object when adding code into html

  - by Luke

  Hello. I am getting the following error: Fatal error: Call to a member function error() on a non-object in /home/gamepla3/public_html/football/result.php on line 177 The line for this is <?php echo $form->error("homescore"); ?> I'm failing to see how this could be the case? The thing worked fine before I added working code into my html document so it looked better. Now I can't get it working?? EDIT. When the code is not within HTML, it works fine. Once I have it within the HTML, it throws back an error? Has anyone seen anything like this before?

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