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• Creating readable html with django templates

  - by rileymat

  When using Django for html templating how do I create good html markup formatting. I am trying to make use of content blocks. But the content blocks show up at different levels of indentation in different templates. How do I get the content blocks to show indented like it would be if someone was to hand write the html. I am having the same problem with newlines; I can smash all the blocks together in the template. At that point the html looks better, but the templates are unmaintainable. I guess the question is how to you create pretty html markup with the django templating system?

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• Hardcoding the resources in application

  - by HardCoder1986

  Hello! I have some code which shows a simple dialog box and handles user action (written using plain WinAPI). // Display dialog and handle user action LRESULT choice = DialogBoxParam(NULL, MAKEINTRESOURCE(AP_IDD_DIALOG), NULL, (DLGPROC)DialogCallback, NULL); Is there any way to hardcode the resource file dialog.rc, which is used to build the dialog ?(I would like to get rid of .rc files and I'm pretty sure there is a way, yet I don't know what it is :) Edit Also, does someone have any ideas on converting existing .rc files into hardcoded resources? Is this possible?

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• Is allocating a dynamic array without specifying size well formed code?

  - by Als

  The following simple program snippet gives compilation errorswith gcc-4.3.4. Program: int main() { char *ptr = new char[10]; char *ptr1 = new char[]; return 0; } Compilation errors: prog.cpp: In function ‘int main()’: prog.cpp:4: error: expected primary-expression before ‘]’ token prog.cpp:3: warning: unused variable ‘ptr’ prog.cpp:4: warning: unused variable ‘ptr1’ But the same compiles cleanly with MSVC without any diagnostic message. So my question is: Does the Standard allow an new [] to be called without specifying the size? Or this a bug in MSVC? Can someone provide a reference from the standard which will conclusively say that the above code example is ill-formed or well-formed? I have had a look at: 5.3.4 New [expr.new] & 18.4.1.2 Array forms [lib.new.delete.array] but couldnt find any conclusive evidence about the behavior.

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• How to escape $ in php using preg_replace ?

  - by sakura

  Hi, I am using preg_replace to escape special characters... $tmpStr=preg_replace("/\?/", "\?", $tmpStr); $tmpStr=preg_replace("/\#/", "\#", $tmpStr); $tmpStr=preg_replace("/\^/", "\^", $tmpStr); $tmpStr=preg_replace("/\&/", "\&", $tmpStr); $tmpStr=preg_replace("/\*/", "\*", $tmpStr); $tmpStr=preg_replace("/\(/", "\(", $tmpStr); $tmpStr=preg_replace("/\)/", "\)", $tmpStr); $tmpStr=preg_replace("/\//", "\/", $tmpStr); but i am not able to escape $ using the same function $tmpStr=preg_replace("/\$/", "\$", $tmpStr); and also when i use the above statement all the spaces get replaced by $ and $ is not getting escaped....someone please help me with this....

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• Why the actionscript 3.0 snippet below failed to import Button and TextInput?

  - by user198729

  package { import fl.controls.Button; import fl.controls.TextInput; public class MinRecord extends Sprite { private var recordBtn:Button; private var stopBtn:Button; private var textInput:TextInput; ... When I run it reports: Type was not found or was not a compile-time constant: Button. Type was not found or was not a compile-time constant: TextInput. Can someone point out what's wrong here?

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• When should one let an application crash because of an exception in Java (design issue)?

  - by JVerstry

  In most cases, it is possible to catch exceptions in Java, even unchecked ones. But, it is not necessarily possible to do something about it (for example out of memory). For other cases, the issue I am trying to solve is a design principle one. I am trying to set-up a design principle or a set of rules indicating when one should give up on an exceptional situation, even if it is detected in time. The objective is trying to not crash the application as much as possible. Has someone already brainstormed and communicated about this? I am looking for specific generic cases and possible solutions, or thumb-rules. UPDATE Suggestions so far: Stop running if data coherency can be compromised Stop running if data can be deleted Stop running if you can't do anything about it (Out of memory...) Stop running if key service is not available or becomes unavailable and cannot be restarted If application must be stopped, degrade as gracefully as possible Use rollbacks in db transactions Log as much relevant information as you can Notify the developers

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• Understanding c++ block of code

  - by kotoko

  I was given a c++ main and have to code it so it works. I am having some trouble understanding the code as I am a bit new to cpp. Here is the code int main(int argc, char *argv[]) { Class::setAtribute("string"); Class(Class::CONSTANT) << "starting up..."; } Some questions: How can the first line work with no variables? Is it static? The second line is really strange for me, what I can make out is a Constructor that takes in a class constante and then prints it out somehow? If someone could explain me this bit of code it would be great! Thanks in advance.

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• Can I use a single instance of a delegate to start multiple Asynchronous Requests?

  - by RobV

  Just wondered if someone could clarify the use of BeginInvoke on an instance of some delegate when you want to make multiple asynchronous calls since the MSDN documentation doesn't really cover/mention this at all. What I want to do is something like the following: MyDelegate d = new MyDelegate(this.TargetMethod); List<IAsyncResult> results = new List<IAsyncResult>(); //Start multiple asynchronous calls for (int i = 0; i < 4; i++) { results.Add(d.BeginInvoke(someParams, null, null)); } //Wait for all my calls to finish WaitHandle.WaitAll(results.Select(r => r.AsyncWaitHandle).ToArray()); //Process the Results The question is can I do this with one instance of the delegate or do I need an instance of the delegate for each individual call? Given that EndInvoke() takes an IAsyncResult as a parameter I would assume that the former is correct but I can't see anything in the documentation to indicate either way.

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• Commands implicitly threaded in Makefiles ?

  - by apple92

  Hi, I have a "super" makefile which launches two "sub" make file: libwebcam: @echo -e "\nInvoking libwebcam make." $(MAKE) -C $(TOPDIR)/libwebcam uvcdynctrl: @echo -e "\nInvoking uvcdynctrl make." $(MAKE) -C $(TOPDIR)/uvcdynctrl uvcdynctrl uses libwebcam... I noticed that those two builds are launched as separate threads by make ! Thus sometimes the lib is not available when uvcdynctrl starts being built, and I get errors. By default, make should not launch commands as threads since this is available only through -j (number of jobs) and, according to the make manual, there is no thread by default. I run this on an Ubuntu. Did someone face the same issue ? Apple92

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• GTK+ (2.0) - signal "clicked" on GtkEntry?

  - by Lght

  i'm testing some signals with Gtk+ 2.0. Actually, i'm looking for a way to get the signal emitted when i click on a GtkEntry. if (widgets_info[i].action & IG_INPUT) { widget->frame[i] = gtk_entry_new_with_max_length(MAX_INPUT_LENGTH); gtk_entry_set_text(widget->frame[i], widgets_info[i].text); catch_signal(widget->frame[i], MY_SIGNAL, &change_entry, widget); } I have a pre-selected text in my entry (widgets_info[i].text) and i want this text to disappear if the user click on my GtkEntry. Does someone knows what is this signal ? Sincerely, Lght (sorry for my english)

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• Strange postgresql behavior

  - by Sergey

  Hi can someone explain me why it works like this? = select client_id from clients_to_delete; ERROR: column "client_id" does not exist at character 8 but, when putting this inside an IN()... = select * from orders where client_id in(select client_id from clients_to_delete); it works! and select all rows in the orders table. Same when running delete/update. Why it doesn't produce an error like before? Thank you!

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• Python built-in id() not consistent:

  - by Dannellyz

  Hoping someone can explain the following discrepancy: >>> s1 = "Cyber security" >>> s2 = "Cyber security" >>> id(s1) == id(s1) True >>> id(s1) == id(s2) False >>> s1 = "cyber" >>> s2 = "cyber" >>> id(s1) == id(s2) True >>> s2 = "cyber " >>> s2 = "cyber " >>> id(s1) == id(s2) False Why does the space make the id() False, yet different variables with no spaces are True?

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• border color left to right animation

  - by Juliver Galleto

  Ok i have this code currently. $(document).ready(function(){ $('.animation').mouseover(function(){ $(this).animate({ borderTopColor: "#000" }, 'fast'); }); }); but what im trying to achieve is to animate the bottom border color that will fade in and out from left to right. for example whenever a user is hover into this .animation, the bottom border color of that element should fade in or out, from left to right, like from this color #fff to #000. hope someone here could figured out how to make this. thank you. Im open in any suggestions, recommendations and suggestions. this could be done by jquery or css3

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• Operators vs Functions in C/C++

  - by user356106

  Someone recently asked me the difference between a C++ standard operator (e.g. new,delete,sizeof) and function (e.g. tan,delete, malloc). By "standard" I mean those provided by default by the compiler suite, and not user defined. Below were the answers I gave, though neither seemed satisfactory. (1) An operator doesn't need any headers to be included to use it : E.g. you can have a call to new without including any headers. However, a function (say free() ) does need headers included, compulsorily. (2) An operator is defined as such (ie as a class operator) somewhere in the standard headers. A function isn't. Can you critique these answers and give me a better idea of the difference?

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• QT Question - What are all these extra spaces for ? (pic provided)

  - by mea

  stack overflow wont let me post images so heres the link: http://4m0.org/images/qt.png This is my application. For this question, ignore the top part with the buttons. I have a QScrollArea Filled with many QGroupBoxes Filled with a horizontal box layout of QLabel (on the left) and QGroupBox (on the right) The right side is a vertical box layout of QPushButtons Every single element, the scrollarea, both boxes, the labels, and the buttons all have their style sheets modified so padding is 0px and margin is 0px. Why do i have all this extra space? The scroll area has space on all sides until its inner elements (the blue boxes) start. Then those boxes have space until its inner elements (the white boxes) start. Can someone tell me what is going on?

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• IIS version control with Mac clients

  - by shummel7845

  We are in a unique situation here at work. Most of our websites are on an IIS server, but our developers are on Macs. We need some kind of way to do version control of our websites, but want to manage them locally on our Macs. Is there any way to do this, short of Powershell? Most of our websites are in PHP, so we don't want a solution that is geared toward ASP.NET. Also, I'm not clear if there is a way to use Subversion with IIS. Can someone help me out?

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• Getting age in years in a SQL query

  - by Earlz

  Hello I've been tasked with doing a few queries on a large SQL Server 2000 database. The query I'm having trouble with is "find the number of people between ages 20 and 40" How would I do this? My previous query to get a count of everyone looks like this: select count(rid) from people where ... (with the ... being irrelevant conditions). I've googled some but the only thing I've found for calculating age is so large that I don't see how to embed it into a query, or it is a stored procedure which I do not have the permissions to create. Can someone help me with this?

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• Pass the current state of a function into another function in C/C++

  - by sand

  Is there a way to pass the current state of a function into another function in C/C++? I mean all the parameters and local variables by current state. For example: void funcA (int a, int b) { char c; int d, e; // Do something with the variables. // ... funcB(); // Do something more. } void funcB() { // funcB() should be able to access variables a,b,c,d & e // and any change in these variables reflect into funcA(). } The code is in bad shape if there is a need for funcB() kind of functions. But can it be achieved? This can help if someone is starting to re-factor a long method with multiple parameters.

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• Serialze an Object to a String

  - by Vaccano

  I have the following method to save an Object to a file: // Save an object out to the disk public static void SerializeObject<T>(this T toSerialize, String filename) { XmlSerializer xmlSerializer = new XmlSerializer(toSerialize.GetType()); TextWriter textWriter = new StreamWriter(filename); xmlSerializer.Serialize(textWriter, toSerialize); textWriter.Close(); } I confess I did not write it (I only converted it to a extension method that took a type parameter). Now I need it to give the xml back to me as a string (rather than save it to a file). I am looking into it, but I have not figured it out yet. I thought this might be really easy for someone familiar with these objects. If not I will figure it out eventually.

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• PHP - displaying 1 random record for each week

  - by mike

  I want to display 1 random record from a database based on the week. I need to determine if it's a new, and if it is a new week, then select the record and display the new record. I'm thinking I can just use a single day of the week to generate the new record, either way will work. I'm really having a hard time conceptualizing how I'll store the record id and not select a new one when someone visits again the same day or refreshes the page. Any ideas? Let me know if I wasn't clear enough.

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• Are where any Visual Studio addings for true 'smart tabs'?

  - by Eye of Hell

  Hello. 'Smart Tabs' concept allows to automatically insert tab character for block indentation and space characters for in-block formatting. It's described here. Unfortunately, Visual Studio's 'smart tabs' option in text editor settings just indents text on enter press. Same name, completely different and near useless thing :). So, maybe someone knows of a visual studio addin that can change how 'tab' key work so it will insert tab characters and space characters according to rules mentioned above? Any hints are welcome.

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• JSP::Confused with the session objects

  - by Legend

  I just started exploring Java Servlets and JSP and am a little confused about the sessions object. Inside a servlet I have this: public class SampleServlet extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException { HttpSession session = request.getSession(true); session.setAttribute("_session", "_value"); response.sendRedirect("page2.jsp"); } } Now, inside page2.jsp, there is a session object as well, but when I do this <% out.print(session.getAttribute("_session")) %> it gives me an error. Can someone tell me the right way of doing this? As to what I am trying to do, I want to share some session variables.

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• Messaging in local network with .NET

  - by Richard

  Hi All, I need to implement some form of communication mechanism in my application, to send notifications/messages from one application instance to all the others. This is a normal scenario where someone adds and item or deletes and item and you want to notify other users that this has happened. The application runs on the client and connects to a database on the local network. So its not like all clients access a server instance of the application. So from what I know I could use MessageQueues or some form of Database polling where I have a table that stores all the messages (not ideal). Issue is I need to implement this very quickly, so sadly can't go very complex but need the quickest easiest solution. thanks for the help!

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• WPF toolkit DataGrid show filds even with browsable attribute set to false

  - by Jonathan

  Hi Hi have an observable collection that I bind to a DataGrid using the itemsource property of the DataGrid. All the properties of the class inside the collection are displayed properly in the DataGrid. Now, I want to hide some fields to the DataGrid using the browsable attribute [Browsable(false)] in the class. It works well in winforms, but it seems not working in WPF. Someone knows why? I can hide the columns later, but I don't want to loss performance in this way. Is there any other solution? Thanks.

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• What are the possible tags of "global" tag in Magento "config.xml" file?

  - by Knowledge Craving

  Can someone professional experienced Magento developer tell me how to accomplish the following in Magento? I want to know what are the possible tags that can fit in the "global" tag of the "config.xml" page of every module's etc folder? I have tried searching for this answer at many places in Internet but in vain. Please provide the full details along with it, because I want at least the users accessing this website find it useful enough, instead of scratching their heads. I really want a detailed explanation, because every newbie like me gets totally confused at this point. From what I know till now, is that in this page, you can set routers, rewrites, cron jobs, admin html, front-end html and many more. But without any strong concepts. So please I want that strong fundamental concept with a detailed explanation about it.

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