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  • django: ajax view structure

    - by zack
    I want to know the correct way to structure ajax views in django. say i do something like : def foo_json(request): if is.ajax(): # return JSON here and make it available as a resource at something like '/foo/data/'.. all is fine.. but if I point the browser at '/foo/data/' .. obviously I get an error (debug) like: app.views.foo_json didn't return an HttpResponse object. so... my question is: Whats the best way structure this kind of view? ..should I return an HTTP response code ..maybe 404 / 405 ... or something else? - not sure of the best way to handle this, any advice appreciated :)

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  • How to determine pixel color of System.Windows.Controls.Image?

    - by csciguy
    I have an Image from (System.Windows.Controls.Image). This image is positioned on a main canvas. I want to determine the alpha channel value of the mouse cursor when I click on any portion of this image. When doing something like the following, I'm getting an exception. {"Value does not fall within the expected range."} System.Exception {System.ArgumentException} Code: try{ CroppedBitmap cb = new CroppedBitmap(ac.displayImage.Source as BitmapSource, new Int32Rect((int)mousePoint.X, (int)mousePoint.Y, 1, 1)); byte[] pixels = new byte[4]; cb.CopyPixels(pixels, 4, 0); } catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.Message); } The mousePoint.X, and mousePoint.Y are obtained when the user clicks on the main window. Is there a better way to do this?

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  • Printing saved HTML to jsp keeps getting corrupted

    - by JWL
    I have a JAVA object where I save a HTML string value I call message. The saved data looks like the below, You have received a new <a href='' onclick='return popupRentalView('5282053859835904');'>Rental Request 5282053859835904</a>. Please view your open orders. But when printed to the JSP file and displayed at runtime using <%=pm.getMessage()%> or <%out.print(pm.getMessage());%> The actual html code comes out all messed up, You have received a new <a 5282053859835904');'="" onclick="return popupRentalView(" href="">Rental Request 5282053859835904</a> . Please view your open orders. Any thoughts on why the displayed string does not match the saved string? JAVA code for saving is note.setMessage("You have received a new <a href=\"\" onclick='return popupRentalView('" + requestId + "');'> Rental Request " + requestId + "</a>. Please view your open orders.");

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  • How can I see what capybara found in a failing cucumber step?

    - by ajmurmann
    I started migrating from cucumber + webrat to cucumber + capybara. Now the behavior of "I should see " seems to be somewhat different. Most of these fail now, although I didn't change anything on the page. I replaced the snippet that should be found with some stuff that is on every page and for some text it works and for other text it doesn't. I can't find any pattern in what is found in the page's content and what is not. Webrat used to print what the page content is that it found, in case it did not contain the required phrase. Is there anyway to have capybara show what text it got from the page in which it tried to find the text?

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  • Code understanding, reverse engineering, best concepts and tools. Java.

    - by core07
    One of most demanding tasks for any programmer, architect is understanding other's code. E.g. I am contractor, hired to rescue some project very quickly. Fix bugs, plan global refactoring and therefore I need most efficient way to understand the code. What is the list of concepts, their priority and best tools for this? Of what I know: reverse code engineering to create object models (creating of diagram per package is not so convenient), create sequence diagrams (the tool connects in debug mode to the system and generates diagrams from runtime). Some visualizing techniques, using some tools to work not just with .java but also with e.g. JPA implementors like Hibernate. Generate diagram for not all the codebase, but add some class and then classes used by it. Is Sparx Enterprise Architect state of the art in reverse engineering or far from that. Any other better tools? Ideally would be that tool makes me understand the code as if I wrote it myself :)

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  • Iphone - Displaying NSDate values in the debugger with local timezone

    - by Oliver
    Hello, I'm trying to debug my app and there is something very annoying in the debugger : all the NSDate values are displayed in the GMT timezone. So in my debugging process, I lose a lot of time converting by myself all the displayed dates to check if they are correct in the system timezone. As I have a lot of dates at midnight, even the day is displayed "wrong". It's a nightmare. Is there a way to make the debugger display the NSDate values in the iPhone system timezone (not the MacOS one nor GMT) ? I'm at GMT+1 Thank you for your help.

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  • UML tool required for C#

    - by Peter Morris
    I need some help - here are my requirements. 1: I should be able to modify the UML model without affecting the code, and then later apply the changes. This is because I need to print the changes, get them confirmed, and then develop them. 2: I should be able to reuse parts of the model. For example I would create one project which outputs A.dll assembly, and then another UML project would use the classes in the first to crate B.dll 3: Project stored as text so I can see changes in version control history. 4: Together is too expensive :-)

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  • c# wrapper for a c DLL

    - by Without me Its just Aweso
    I'm attempting to write a wrapper so that my C# application can use a DLL written in C. Here is a method defintion that i'm trying to wrap: void methodA(const uint32_t *data); //c header declaration The issue I'm having is trying to figure out how to give a equivalent pointer from c#. In c# I want it to operate on a: UInt32 data[] //my c# object i want to be able to pass in but how do I give an equivalent pointer in my wrapper? I have tried ref data //my attempt at giving an equivalent pointer to the DLL but that doesnt seem to be working. Using debug statements in the DLL I can see that the values it gets that way are not what I'm attempting to pass in. So my question boils down to have do I properly wrap a c fuction that is using a pointer to reference an array?

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  • Passing expression as a parameter in Call by reference

    - by darkie15
    All, When we are passing an expression as a parameter, how does the evaluation occur? Here is a small example. This is just a pseudocode kind of example: f (x,y) { y = y+1; x = x+y; } main() { a = 2; b = 2; f(a+b, a) print a; } When accessing variable x in f, does it access the address of the temp variable which contains the result of a+b or will it access the individual addresses of a and b and then evaluate the value of a+b Please help. Regards, darkie15

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  • Strange fstream problem

    - by noname
    Hi, I have really strange problem. In Visual C++ express, I have very simple code, just: #include <fstream> using namespace std; int main() { fstream file; file.open("test.txt"); file<<"Hello"; file.close(); } This same code works OK in my one project, but when I create now project and use this same lines of code, no file test.txt is created. Please, what is wrong?¨ EDIT: I expect to see test.txt in VS2008/project_name/debug - just like the first functional project does.

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  • java get file paths

    - by user283188
    hey everybody, I have a jsp page which contains the code which prints all files in a given directory and their file paths. The code is if (dir.isDirectory()) { File[] dirs = dir.listFiles(); for (File f : dirs) { if (f.isDirectory() && !f.isHidden()) { File files[] = f.listFiles(); for (File d : files) { if (d.isFile() && !d.isHidden()) { System.out.println(d.getName()+ d.getParent() + (d.length()/1024)); } } } if (f.isFile() && !f.isHidden()) { System.out.println(f.getName()+ f.getParent() + (f.length()/1024)); } } } The problem is that it prints the complete file path, which when accessed from tomcat is invalid. For example, the code spits out the following path: /usr/local/tomcat/sites/web_tech/images/scores/blah.jpg and I want it to only print the path up to /images ie /images/scores/blah.jpg I know I could just mess around with an actual string, ie splitting it or string matching, but is there an easier way to do it? Thanks

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  • Exporting Eclipse project with a reference to native library

    - by TacB0sS
    I have an Eclipse project, that uses JMF, I found out I could skip the JMF installation process and still to use the CaptureDeviceManager of the JMF, and to receive the list of devices if I could point my project to the native lib of the JMF. I've managed to add the native lib to the IDE run/debug, but once I export the application to an external runnable Jar, the application cannot find the native lib. the files are located in c:\JMF*.dll I tried to add the folder path to the environment variable in windows - didn't work. I tried to add them into another Jar and add it to the project - didn't work. I tried to add the files into the project - didn't work. I tried to add the path to the class path - didn't work. I tried to add the path to the library path - didn't work. does someone have any sort of a solution? Thanks in advance, Adam Zehavi.

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  • Memory address of a variable

    - by dotnetvoyager
    Hi Everyone, Is it possible to get the memory address of a variable in C#. What I am trying to do is very simple. I want to declare variables of type Double, Float, Decimal and assign the value 1.1 to each of these variables. Then I would like to go and see how these values are represented in memory. I need to get the memory address of the variable in order to see how its stored in memory. Once I have the memory address I plan to put a break point in the code and use the Debug - Windows - Memory option in visual studio to see how the numbers are stored in memory. Cheers,

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  • How does jQuery .data() work?

    - by kazanaki
    My Javascript knowledge is pretty limited. Instead of asking several javascript questions I got the "message" from Stack overflow and started using jQuery right away in order to save me some time. However several times I do not undestand the "magic" behind jQuery and I would love to learn the details. I want to use .data() in my application. The examples are very helpful. I do not understand however WHERE these values are stored. I inspect the webpage with Firebug and as soon as .data() saves an object to a dom element, I do not see any change in Firebug (either HTML or Dom tabs). I tried to look at jQuery source, but it is very advanced for my Javascript knowledge and I lost myself. So the question is: Where do the values stored by jQuery.data() actually go? Can I inspect/locate/list/debug them using a tool?

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  • Tkinter Packing Strangeness: Buttons packed above others

    - by Parand
    I'm sure I'm doing something obvious wrong here, but I can't see it. I end up with the "Should be on top" label packed at the bottom instead of at the top. What am I doing wrong? from Tkinter import * class SelectAction(Frame): buttons = {} def callback(self): print "Callback" def createWidgets(self): logo_label = Label(text="Should be on top").pack(fill=X) for name, text, callback in ( ('setup_account', 'Account Settings', self.callback), ('do_action', 'Do Something', self.callback), ): self.buttons[name] = Button(self, text=text, command=callback).pack(fill=X) def __init__(self, master=None): Frame.__init__(self, master) self.pack() self.createWidgets() if __name__ == "__main__": root = Tk() app = SelectAction(master=root) app.mainloop() root.destroy()

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  • Code jumps out of a jar and runs? What is causing this?

    - by Mike
    I am trying to get a sample program working with JUNG, a graphing tool in Java. I downloaded and referenced all the .jar files in eclipse so my project hierarchy looks like this: In Test.java I have the following code: public class Test { static public void main() { System.out.print("Hello"); }} For some reason though when I try to run it as a Java Application by right clicking on Jung test in the project hierarchy I am presented with a bunch of classes. My Test.java isn't on the list so if I just leave it as ** and press ok it starts running a program that is dynamically adding nodes and vertexes to a graph. I can't seem to figure out what code its actually executing. I know java but stuff like this with the jar files seems to be getting lost on me. Any ideas? Thanks

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  • Why does Perl's Crypt::SSLeay timeout on Intel Mac OS X machines?

    - by Joe
    A have a Perl cron job that recently started having its HTTPS connections start failing with an error of "500 SSL read timeout". I've tracked that the error is being thrown as part of an alarm in Crypt::SSLeay, but I don't know if this is simply something taking too long to respond. So far, I've adjusted the timeout from the default 30 seconds to 10 minutes and it still times out. I've moved the script to other machines, and those on Intel Mac OS X systems all time out, while those under Linux, or on PPC Mac OS X systems run fine, so I don't think it's changes on the network or remote server. When the process started having problems does not coincide with any software updates or reboots on the machine, and I've contacted the server I'm connecting to, and everyone claims that they haven't changed anything. Does anyone have recommendations on trying to debug HTTPS, or have you ever seen this behavior and give recommendations on something I might've overlooked at that could've caused this problem?

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  • Problem in Closing Exe

    - by chandruswami
    In C#, I am using form1 as homescreen,.. while running exe from Debug folder, form1.exe appears in Process tab in task manager,... The problem is: Through form1 at runtime, i may create more instances of form1 while trying to close particular instance, the instances closed,.. but still exe appears in task manager. what i found: If i close the instances in the order what we created,.. all exe closes correctly,.. but if close the 4th instance and then 3rd instance,.. exe remains in task manager. (instead of 3rd and then 4th instance) I also used Application.Exit() but still the Exe remains in taskmanager,......

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  • Pattern Matching in Columns

    - by Chronicles
    File 1 A11;F1;BMW A23;F2;BMW B12;F3;BMW H11;F4;JBW File 2 P01;A1;0;0--00 ;123;456;150 P01;A11;0;0--00 ;123;444;208 P01;B12;0;0--00 ;123;111;36 P01;V11;0;0--00 ;123;787;33.9 Output -;-;-;P01;A1;0;0--00 ;123;456;150 A11;F1;BMW;P01;A11;0;0--00 ;123;444;208 B12;F3;BMW;P01;B12;0;0--00 ;123;111;36 -;-;-;P01;V11;0;0--00 ;123;787;33.9 I TRIED awk 'FNR==NR {a[$2] = $0; next }{ if($1 in a) {p=$1;$1="";print a[p],$0}}' File1 File2 But didnt work. Basically I want to get the details from FILE 1 and compare with FILE2 (master list) . Example : A1 in FILE2 was not available in FILE1 , so in output file we have “-“ for 1st three fields and rest from FILE2 . Now, we have A11 and we got the detail in FILE1. So we write details of A11 from both File 1 & 2

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  • Perl classes like stuff

    - by user350571
    Hello, lovers of the camel. I'm new to perl and it's blessing stuff to imitate class like functionality made me feel strange I even had to go to the bathroom. Now, please tell me: what do you don't like, find wrong or strange with this code: sub Person { my $age = shift || 15; return { printAge => sub { print "Age -> $age\n"; }, changeAge => sub { $age = shift } } } my $p = Person(); my $p2 = Person(27); $p->{printAge}->(); $p->{changeAge}->(30); $p->{printAge}->(); $p2->{printAge}->(); I'm going to walk my dog, hope to get responses when I'm back. Thanks in advance. Cheers. Be back soon. Thanks again.

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  • Force line-buffering of stdout when piping to tee

    - by houbysoft
    Usually, stdout is line-buffered. In other words, as long as your printf argument ends with a newline, you can expect the line to be printed instantly. This does not appear to hold when using a pipe to redirect to tee. I have a C++ program, a, that outputs strings, always \n-terminated, to stdout. When it is run by itself (./a), everything prints correctly and at the right time, as expected. However, if I pipe it to tee (./a | tee output.txt), it doesn't print anything until it quits, which defeats the purpose of using tee. I know that I could fix it by adding a fflush(stdout) after each printing operation in the C++ program. But is there a cleaner, easier way? Is there a command I can run, for example, that would force stdout to be line-buffered, even when using a pipe?

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  • How can I make the Python logging output to be colored?

    - by airmind
    Some time ago I saw a Mono application with colored output, probably because of it's log system, because all the messages were standardized. Now, Python has the logging module, and it let you specify a lot of options or customize it entirely, so I'm imagining that something like that would be possible too with Python, however I could not find it anywhere. Is there any way to make the Python logging module to output in color? What I want is for error messages to appear in red, for instance. Debug messages in blue or yellow, and so on. Of course this would probably only work on Linux, with compatible terminals (most modern terminals are), but I could fallback to the original logging output if color is not supported. Any ideas?

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  • mig layout - span and grow/push problem

    - by pstanton
    i want 3 components laid out on 2 lines, so that the bottom component and the top-right component use all available horizontal space. JFrame frame = new JFrame(); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.setLayout(new MigLayout("debug, fill")); Container cp = frame.getContentPane(); cp.add(new JTextField("component 1"), ""); cp.add(new JTextField("component 2"), "growx,push,wrap"); cp.add(new JTextField("component 3"), "span,growx,push"); frame.pack(); frame.setVisible(true); considering the above, how do i stop the space between "component 1" and "component 2" from appearing when resizing the frame? thanks.

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  • Returning more than one result

    - by Hairr
    I'm using the following code: def recentchanges(bot=False,rclimit=20): """ @description: Gets the last 20 pages edited on the recent changes and who the user who edited it """ recent_changes_data = { 'action':'query', 'list':'recentchanges', 'rcprop':'user|title', 'rclimit':rclimit, 'format':'json' } if bot is False: recent_changes_data['rcshow'] = '!bot' else: pass data = urllib.urlencode(recent_changes_data) response = opener.open('http://runescape.wikia.com/api.php',data) content = json.load(response) pages = tuple(content['query']['recentchanges']) for title in pages: return title['title'] When I do recentchanges() I only get one result. If I print it though, all the pages are printed. Am I just misunderstanding or is this something relating to python? Also, opener is: cj = CookieJar() opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))

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  • NSDateFormatter, am I doing something wrong or is this a bug?

    - by rustyshelf
    I'm trying to print out the date in a certain format: NSDate *today = [[NSDate alloc] init]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyyMMddHHmmss"]; NSString *dateStr = [dateFormatter stringFromDate:today]; If the iPhone is set to 24 hour time, this works fine, if on the other hand the user has set it to 24 hour time, then back to AM/PM (it works fine until you toggle this setting) then it appends the AM/PM on the end even though I didn't ask for it: 20080927030337 PM Am I doing something wrong or is this a bug with firmware 2.1? Edit 1: Made description clearer Edit 2 workaround: It turns out this is a bug, to fix it I set the AM and PM characters to "": [dateFormatter setAMSymbol:@""]; [dateFormatter setPMSymbol:@""];

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