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• Edit PDF files dynamically from Flash or Flex

  - by TandemAdam

  I am planning to do a CD-ROM in either Flash or Flex, possibly using the Adobe AIR runtime. This CD interactive will have a bunch of forms on it for the user to fill out. After they fill in a form, they will have the option of saving or printing a PDF that is based on there information. I am trying to find a way of editing the content of the PDF in Flash, so when the user fills out the form, the application will fill in the PDF with there details from the form fields. Is this is possible? It would be great if there was some way of having template PDFs (either on the CD as there own files, or in a Flash library), then flash could come along and fill in the specific fields inside the PDF. Can Adobe AIR help me in any way here?

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• How to read a column in a tab-delimited Excel file in C#?

  - by janejanejane

  I have some data of an excel file below. At first, I figured that reading from the file could be done using the Excel Library then using an OLEDB connection. I managed to get the DocumentNo column data with the OLEDB approach. However, when the excel file is closed, I am unable to do the operation because it gives an error that "External table is not in the expected format." How can I read from the file even if it is closed? 10/4/2010 Paid Documents for Document Tracking - Customer 1 Paid Documents for Document Tracking - Customer CoCd Customer Trans.type SG Clearing Clrng doc. Assignment Year DocumentNo Pstng Date Doc. Date Entry Dte Crcy PLDT 5000007 4 4 1/15/2010 25003413 5000007 2010 408000139 1/7/2010 1/5/2010 1/12/2010 PHP PLDT 5000007 4 4 1/15/2010 25003634 5000007 2010 408000068 1/5/2010 12/22/2009 1/10/2010 PHP

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• How to implement square root and exponentiation on arbitrary length numbers?

  - by tomp

  I'm working on new data type for arbitrary length numbers (only non-negative integers) and I got stuck at implementing square root and exponentiation functions (only for natural exponents). Please help. I store the arbitrary length number as a string, so all operations are made char by char. Please don't include advices to use different (existing) library or other way to store the number than string. It's meant to be a programming exercise, not a real-world application, so optimization and performance are not so necessary. If you include code in your answer, I would prefer it to be in either pseudo-code or in C++. The important thing is the algorithm, not the implementation itself. Thanks for the help.

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• Where can I find boost::fusion articles, examples, guides, tutorials?

  - by Kyle

  I am going to go ahead and shamelessly duplicate this question because the accepted answer is essentially "nope, no guides" and it's been nearly a year now since it's been asked. Does anyone know of any useful articles, guides, tutorials, etc. for boost::fusion besides the barebones documentation on boost.org? (which I'm sure is great as a reference after one has learned the library.) I'm completely open to, say, a link to a book on Amazon. Searched for it myself just now but all I came up with was green tea. The top links on Google aren't much better.

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• Discrete event simulation framework for .NET

  - by Kuba

  Does anyone have an experience with some discrete event simulation library that could be used in .NET (C#)? Despite the basic functionality for queing events and dispatching them, it would be fine to have some non-deterministic behavior (e.g. failures simulation). I have some tips and I am even considering to write my own, but first, I would like to collect some recomendations. Thanks. Additional info: i'm not looking explicitly for free product, however, the prize matters :) Just to precise the field i need to map, here is the example of a product: http://www.holushko.com/index.html

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• question about working with System.Drawing.Graphics

  - by backdoor

  hi all. i have a System.Drawing.Point[] filled with some System.Drawing.Point's. so when i want to draw this points as a polygon in a System.Windows.Form instance , the final drawn polygon is not all in the screen or sometimes is very small (in screen shown as 2-3 pixel). i wonder if there is some Library that using that i can just send Point[] to that and thatself scales and ... points and draws polygon manner that all points shown in screen and they are scaled to fit the screen (i mean small objects that shown as 2-3 pixel scale up to fit entire screen); thaks all and sorry for my bad english...

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• Zero KB SQLite File created by Core Data on application start up

  - by Tots

  I'm developing an iPhone application using Core Data. I had everything working and had to make an adjustment to the database schema and change the relationships through the xcdatamodel file. I deleted the my project's sqlite file in Library/Application Support/iPhone Simulator/3.1.3//Documents. Build and run the application, it creates the sqlite file, but its empty with a file size of 0 KB. At a minimum the table information should be in there. There are no errors/warning in the console. Anyone have an idea what is wrong?

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• RubyMotion Error When Using setTranslucent

  - by Sam Morris

  I'm getting the following error when trying rake a project I'm working on, and I can't figure out why. The message happens no matter what variable I sent it. Objective-C stub for message `setTranslucent:' type `v@:c' not precompiled. Make sure you properly link with the framework or library that defines this message Here's my app_delegate file for reference. class AppDelegate def application(application, didFinishLaunchingWithOptions:launchOptions) navigation_appearance @window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds) tableView = StopsController.alloc.init @window.rootViewController = UINavigationController.alloc.initWithRootViewController(tableView) @window.makeKeyAndVisible true end def navigation_appearance UINavigationBar.appearance.setBackgroundImage UIImage.imageNamed('navbar_bg.png'), forBarMetrics: UIBarMetricsDefault UINavigationBar.appearance.setTranslucent(true) UINavigationBar.appearance.setShadowImage UIImage.imageNamed('navbar_shadow.png') end end

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• How do I move Zend Framework From Development to Production?

  - by dirtylogic

  I'm just wondering if anyone else has had problems moving the Zend Framework from development to production. I changed my docroot to the public folder, updated my library path, but it's still not working out for me. The IndexController is working just fine, but my ServiceController is giving me an internal server error. ServiceController <?php class ServiceController extends Zend_Controller_Action { public function amfAction() { require_once APPLICATION_PATH . '/models/MyClass.php'; $srv = new Zend_Amf_Server(); $srv->setClass('Model_MyClass', 'MyClass'); echo $srv->handle(); exit; } }

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• ResultSet and aggregation

  - by kachanov

  Ok, I admit my situation is special There is a data system that supports SQL-92 and JDBC interface However the SQL requets are pretty expensive, and in my application I need to retreive the same data multiple times and aggregate it ("group by") on different fields to show different dimensions of the same data. For example on one screen I have three tables that show the same set or records but aggregated by City (1st grid), by Population (2nd grid), by number of babies (3rd grid) This amounts to 3 SQL queries (which is very slow), UNLESS anyone of you can suggest any idea any library from apache commons or from google code, so that I can select all records into ResultSet and get 3 arrays of data group by different fields from this single ResultSet. Am I'm missing some obvious and unexpected solution to this problem?

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• Why do C++ streams use char instead of unsigned char?

  - by Johannes Schaub - litb

  I've always wondered why the C++ Standard library has instantiated basic_[io]stream and all its variants using the char type instead of the unsigned char type. char means (depending on whether it is signed or not) you can have overflow and underflow for operations like get(), which will lead to implementation-defined value of the variables involved. Another example is when you want to output a byte, unformatted, to an ostream using its put function. Any ideas? Note: I'm still not really convinced. So if you know the definitive answer, you can still post it indeed.

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• Add directories to root of Zip folder Ionic Zip c#

  - by Movieboy

  I asked this a few months ago, and only received one response which didn't work. I've been tinkering with it for the past few weeks, and I'm still completely lost, so I would appreciate anyone else's input as I'm all out of ideas. what I'm trying to do is add a list of folders and files all to the root of my Zip file, using the Ionic Zip library (c#). Here's what I have so far string k = "B:/My Documents/Workspace"; private void button1_Click(object sender, EventArgs e) { using (ZipFile zip = new ZipFile()) { //add directory, give it a name zip.AddDirectory(k); zip.Save("t.zip"); } } Now, I want my zip to be looking like this. t.zip -Random Files and Folder But it's looking like this. t.zip -t (folder) -Random files and folders Any help would be appreciated, Thank you.

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• Connecting std::basic_ofstream<unsigned char> to a FIFO. bad_cast exceptions

  - by Mike B

  Using gcc 4.4.3 on Linux 2.6.32, I get bad_cast exceptions when connecting std::basic_ofstream to a FIFO. Stepping though the debugger, I can see that the error is generated at various places in the standard library because the _M_codecvt member of the stream or filebuf object is NULL. Exactly where it happens depends on the order of operations, but it appears to be the same cause in each. So am I doing something fundamentally stupid here? ofstream and ifstream work fine. Is there some reason that you shouldn't attach a stream of anything besides char to a FIFO? Thanks in advance.

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• How to make Visual C++ 9 not emit code that is actually never called?

  - by sharptooth

  My native C++ COM component uses ATL. In DllRegisterServer() I call CComModule::RegisterServer(): STDAPI DllRegisterServer() { return _Module.RegisterServer(FALSE); // <<< notice FALSE here } FALSE is passed to indicate to not register the type library. ATL is available as sources, so I in fact compile the implementation of CComModule::RegisterServer(). Somewhere down the call stack there's an if statement: if( doRegisterTypeLibrary ) { //<< FALSE goes here // do some stuff, then call RegisterTypeLib() } The compiler sees all of the above code and so it can see that in fact the if condition is always false, yet when I inspect the linker progress messages I see that the reference to RegisterTypeLib() is still there, so the if statement is not eliminated. Can I make Visual C++ 9 perform better static analysis and actually see that some code is never called and not emit that code?

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• Why people are so afraid of using clone() (on collection and JDK classes) ?

  - by Bozho

  A number of times I've argued that using clone() isn't such a bad practice. Yes, I know the arguments. Bloch said it's bad. He indeed did, but he said that implementing clone() is bad. Using clone on the other hand, especially if it is implemented correctly by a trusted library, such as the JDK, is OK. Just yesterday I had a discussion about an answer of mine that merely suggests that using clone() for ArrayList is OK (and got no upvotes for that reason, I guess). If we look at the @author of ArrayList, we can see a familiar name - Josh Bloch. So clone() on ArrayList (and other collections) is perfectly fine. (Just look at the implementation). Same goes for Calendar and perhaps most of the java.lang and java.util classes. So, give me a reason why not to use clone() with JDK classes?

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• How to access properties of Access Database Table using C# ADOX?

  - by Sachin G

  I have created MS Access Database using C# ADOX library. I have created one table with several columns. What I want to achieve is when I insert date in one column, the date format should be YYYY-MM-DD and not MM-DD-YYYY. I know its just display format, but I want to access the property which we set when we open access table in design mode, and for column with date data type, set format as Custom (YYYY-MM-DD). I want this to be set at runtime while creating table only. I wanted to know what should be property name that I should use in order to access and set the format property of column?

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• How does Mach-O loader loads different NSString objects?

  - by overboming

  I have known that If you define a bunch of @"" NSString objects in the source code in Mac OS. These NSStrings will be stored in a segment in the Mach-O library. Section sectname __ustring segname __TEXT addr 0x000b3b54 size 0x000001b7 offset 731988 align 2^1 (2) reloff 0 nreloc 0 flags 0x00000000 reserved1 0 reserved2 0 If I hex dump the binary, they are aligned closely one by one with a 0x0000as separator. What I want to know is how does the loader in Mac OS X load these NSStrings when the program runs? Are they loaded simpily by recognize the 0x0000 separator or these is a string offset table elsewhere in the binary pointing to separate NSString objects? Thanks. (What I really want to do is the increase the length of one of the NSString, so I have to know how the loader recognize these separate objects)

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• functor returning 0

  - by Jon

  I've recently started teaching myself the standard template library. I was curious as to why the GetTotal() method in this class is returning 0? ... class Count { public: Count() : total(0){} void operator() (int val){ total += val;} int GetTotal() { return total;} private: int total; }; void main() { set<int> s; Count c; for(int i = 0; i < 10; i++) s.inset(i); for_each(s.begin(), s.end(), c); cout << c.GetTotal() << endl; }

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• [PRISM2] Added view does not appear on screen

  - by Jeaffrey Gilbert

  Why my "mainRegion.Activate(view);" doesn't display the view on screen? It only works if I remove the default view that registered (RegisterViewWithRegion) in ModuleInit.cs though I don't put .Activate() after I added a View. But a problem occurs if I move to other module, and get back to module which default view has been removed, I get blank page. Any clues? Thank you. *) I prefer not to remove default view, but only with Activate(view) can show the View I want as explained in my reference. reference: http://msdn.microsoft.com/en-us/library/dd458899.aspx

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• Why do date manipulation in Java with milliseconds?

  - by staticsan

  I was recently faced with the problem of calculating the number of days from two dates in Java (without using joda, I'm afraid). Searching on the 'net shows most answers to this question say to get the milliseconds of the two days and convert that to days, which I found appalling. However, a scant few show a different approach: use a temporary variable to count how many times it takes adding 1 day to the first date to get to the second. This leaves the conversions to the code that does it best: the library. Why do so many people advocate the first? In another project, I had previously encountered numerous subtle date calculation problems involving time-zones, daylight-saving and once even leap years using seconds to do date comparisions and calculations. All these went away when all the comparison and calculation code was rewitten to use the language libraries. (This was in PHP, though, where the libraries are structured quite differently to Java.) So I'm understandably reluctant to use this "common wisdom" in the world of Java about comparing dates.

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• Grails remoteLink handling error codes

  - by soybie

  I'm on grails 1.3.6 and I see the following behavior. <g:javascript library="prototype" /> ... <g:remoteLink action="punch" id="${personInstance.id}" update="damage_${personInstance.id}" on401="alert('foo!');"> generates: <a on401="alert('foo!');" onclick="new Ajax.Updater('damage_5','/blah/person/punch/5',{asynchronous:true,evalScripts:true});return false;" href="/blah/person/punch/5"></a> "on401" isn't a supported event attribute for an anchor tag, so is this a bug in grails?

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• R: How to update a package and keep it from reverting to the original?

  - by John

  I want to upgrade the package ggplot2: library(ggplot2) packageDescription("ggplot2")["Version"] > 0.8.3 But the current version is 0.8.7. I tried update.packages(), which seemed to work OK. But it still returned older version 0.8.3. So I downloaded and installed the package source from Cran, which says 0.8.7 in the download page. I then install it via the GUI menu in R. It returns ** building package indices ... * DONE (ggplot2) I then run: packageDescription("ggplot2")["Version"] > 0.8.3 And still I have the older version! I don't know why this is not working, what's more I had already come across this problem before and solved it (I can't remember exactly what) but now it has gone back to the older version! What's the easiest way to keep packages like this updated automatically and not have them refer back to older packages?

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• Incompatible Types in Initialization

  - by jack

  I have the following code in a subroutine that produces an incompatible types in initialization error on the varVal library in the subroutine evaluateExpression: NSDictionary *varVal; for (int i=0; i<varCount; i++) { [varVal setObject:[(i+1)*2 stringValue] forKey:[i stringValue]]; } double result =[[self brain] evaluateExpression:[[self brain] expression] usingVariableValues:varVal]; My subroutine declaration in the brain.h file is: +(double)evaluateExpression:(id)anExpression usingVariableValues:(NSDictionary *)variables; I'd appreciate any help.

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• How exactly does a program convert everything to UTF-8 internally?

  - by xyld

  does it use setlocale()? does it assume utf-8 for all input strings when in a UTF-8 locale? I understand what unicode is and how it is related to utf-8, but how does one "convert to it" internally with all their strings? How does it convert all input strings to UTF-8? Does it use a C library function? Does the current working locale have to be a UTF-8 locale? UPDATE: if specific technical details could be in your answer, that would be great as that is more along the lines of what I'm looking for. I already understand the reasons for using UTF-8 internally and why it makes dealing with multiple locales much simpler.

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• Webserver for publishing adjusted images

  - by Petr Prikryl

  I want to create webserver which will be receiving data (images probably) from webclients who will be uploading these photos. And then the webserver must execute some graphic programs (client select whichone) to modify the image(s). After the graphic program is done, the results (output image(s)) will be uploaded to the web temp database (by webserver) to publish results of graphic programs. I found the C++ web toolkit (http://www.webtoolkit.eu), but I'm not sure if this is a suitable C/C++ library for me because I haven't any experiences with making C/C++ web apps/servers. Can someone tell me some advice please? The webserver should have some SDK too, for adding next graphic programs. I'm searching only for any C/C++ tools/libraries/etc.

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