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  • cocoa Expected specifier-qualifier-list before struct

    - by Circle
    I read the other posted solutions to using structs and resolving the "Expected specifier-qualifier-list before struct" related errors, but those aren't working. Is it different in Objective C? Do I need to declare my struct somewhere else in the class? It gives me the error on the line where I declare the typedef. Here is how it looks right now: @interface ClassA : NSObject { NSString *name; typedef struct _point { uint32_t x; uint64_t y; } Point; Point a; } @end

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  • C++ STL library in XCode - memset not defined in this scope

    - by Sharath
    I am trying to create a STL based C++ library in XCode with a bunch of C++ files that I have. Basically my end output should be a shared library (dylib) that can be consumed by a Objective-C application. When trying to compile, I get the following error.. 'memset' was not declared in scope. Since my codebase uses a lot of external 3rd party codebases, I thought i'll include or to resolve this, but I tried both and even that didn't work. Does it have something to do with the SDK? Am currently running 10.5 with GCC 4.2 Need help with setting up the Target properly. Any help is appreciated. Thanks.

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  • Greenspun's 10th rule in Perl?

    - by DVK
    Greenspun's Tenth Rule of Programming is a common aphorism in computer programming and especially programming language circles. It states: Any sufficiently complicated C or Fortran program contains an ad hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp. The questions are, 1) Would you consider this to be true of Perl interpreter? Only objective arguments please (e.g. which features of Common Lisp are implemented within the interpreter) 2) Independently, does there exist a Lisp (or at least a n ad hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp) implemented entirely in Perl?

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  • Uploading images to a PHP server from Android

    - by Samuh
    I need to upload an image to a remote PHP server which expects the following parameters in HTTPPOST: *$_POST['title']* *$_POST['caption']* *$_FILES['fileatt']* Most of the internet searches suggested either : Download the following classes and trying MultiPartEntity to send the request: apache-mime4j-0.5.jar httpclient-4.0-beta2.jar httpcore-4.0-beta3.jar httpmime-4.0-beta2.jar OR Use URLconnection and handle multipart data myself. Btw, I am keen on using HttpClient class rather than java.net(or is it android.net) classes. Eventually, I downloaded the Multipart classes from the Android source code and used them in my project instead. Though this can be done by any of the above mentioned methods, I'd like to make sure if these are the only ways to achieve the said objective. I skimmed through the documentation and found a FileEntity class but I could not get it to work. What is the correct way to get this done in an Android application? Thanks.

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  • JavaScript inline events syntax

    - by Mic
    Is there any reason to use one of the following more than the others: <input type="button" value="b1" onclick="manageClick(this)" /> <input type="button" value="b2" onclick="manageClick(this);" /> <input type="button" value="b2" onclick="manageClick(this);return false;" /> <input type="button" value="b3" onclick="return manageClick(this);" /> <input type="button" value="b4" onclick="javascript:return manageClick(this);" /> And please do not spend your valuable time to tell me to use jQuery or attachEvent/addEventListener. It's not really the objective of my question.

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  • Best Allocation Algorithm

    - by shaju
    Hi, I am looking for a best allocation algorithm for the below scenario. We have requirement for say 18 pieces. I have the stock in my shelf as follows. Bin A - 10 Bin B - 6 Bin C - 3 Bin D - 4 Algorithm should propose the bins in the following order Bin A(10) , Bin D (4), Bin C (3) Real scenario we have n number of bins with different quantities.We need to find the optimal combination. Objective is to maxmize the allocation quantity. Can you please help. Regards, Shaju

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  • C or C++ to write a compiler?

    - by H.Josef
    I want to write a compiler for a custom markup language, I want to get optimum performance and I also want to have a good scalable design. Multi-paradigm programming language (C++) is more suitable to implement modern design patterns, but I think that will degrade performance a little bit (think of RTTI for example) which more or less might make C a better choice. I wonder what is the best language (C, C++ or even objective C) if someone wants to create a modern compiler (in the sense of complying to modern software engineering principles as a software) that is fast, efficient, and well designed.

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  • What is technically more advanced: Brainf*ck or Assembler?

    - by el ka es
    I wondered which of these languages is more powerful. With powerful I don't mean the readability, assembler would be naturally the winner here, but something resulting from, for example, the following factors: Which of them is more high-level? (Both aren't really but one has to be more) Who would be the possibly fastest in compiled state? (There is no BF compiler out there as far as I know but it wouldn't be hard writing one I suppose) Which of the both has the better code length/code action ratio? What I mean is If you get to distracted by the, compared to Brainf*ck, improved readability of assembler, just think of writing plain binary/machine code as what assembler assembles to. Both languages are so basic that it should be possible to answer the question(s) in a rather objective view, I hope.

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  • Is it actually possible to programmatically manage the state of an FTP server in IIS7?

    - by nbolton
    I'm able to manage FTP sites via the IIS manager, however, all attempts so far to manage the state of FTP sites using other means have failed, including: Using the IIS7 API (Microsoft.Web.Administration) Using WMI (with IIS6 compatibility enabled) Using the AppCmd tool in System32\inetsrv Related questions: Why am I unable to get Site.State for an FTP site, when using Microsoft.Web.Administration? Are there any workarounds I haven't tried? My objective is to manage (start/stop/query the state of) the FTP sites with C# code (as you can see from the 3 above attempted workarounds). When querying the FTP server state using WMI, it returns code 4, which means "Stopped", even though the site is definitely shown as running in IIS manager. AppCmd is useless, as it returns "Unknown" for FTP sites: c:\Windows\System32\inetsrv>appcmd list site SITE "Default Web Site" (id:1,bindings:http/*:80:,state:Stopped) SITE "Default FTP Site" (id:2,bindings:ftp/*:21:,state:Unknown)

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  • Predict Stock Market Values

    - by mrlinx
    I'm building a web semantic project that gathers the maximum ammount of historic data about a certain company and tries to predict its future market stock values. For data I have the historic stock values (not normalized), news (0 to 1 polarity) and subjective content (also a 0 to 1 polarity). What is the best AI system to train and use for this kind of objective? Is a simple NN with back-propagation training the best I can hope for? update: Everyone is concerned about the quality of this system. Although I'm pretty sure the system is as good as a random prediction (or even worse), this is a school project around artificial intelligence and web semantics. Therefore I'm only concerned in picking the best kind of train method for the data I have (NN, RBF, SVM, Bayes, neuro-fuzzy, etc). Its not about making money.

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  • What happened to Perl?

    - by llasa
    I will try to keep this as objective as possible. I've been dealing with PHP since 3 years know, I have always known of Perl but never really "dived" into it. So I took a look at some Perl code examples and I thought: Wow, It's like PHP just failed at cloning it. My questions are: What is bad about Perl? What are the disadvantages that made it so extremely unpopular so that it is actually dying right know? Why could PHP take over? What does PHP have (or what did it have in the times of PHP4) that made it rise in popularity compared to Perl? I'm rather young and the questions above are a bit subjective and I think you can only really answer them when you have experienced the rise of PHP along with the fall of Perl. Unless my question before I hope that this one here can be more or less completely answered. There have to be definite disadvantages Perl has compared to PHP that made it fall.

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  • What is technically more advanced: Python or Assembler? [closed]

    - by el ka es
    I wondered which of these languages is more powerful. With powerful I don't mean the readability, assembler would be naturally the winner here, but something resulting from, for example, the following factors: Which of them is more high-level? (Both aren't really but one has to be more) Who would be the possibly fastest in compiled state? (There is no Python compiler out there as far as I know but it wouldn't be hard writing one I suppose) Which of the both has the better code length/code action ratio? What I mean is If you get to distracted by the, compared to Python, improved readability of assembler, just think of writing plain binary/machine code as what assembler assembles to. Both languages are so basic that it should be possible to answer the question(s) in a rather objective view, I hope.

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  • Can Core Data be used on Linux?

    - by glenc
    This might be a stupid question, but I was wondering whether or not you can use the Core Data libraries on Linux at all? I'm planning how to build the server side of an iPhone app that I'm working on, and have found that you can use PyObjC to get access to Core Data in a Python environment, e.g. use Core Data in a TurboGears web application. At this point I'm thinking that you would have to run the web server on Mac OSX, because I can't find any evidence on the internet that you can access the Objective-C libraries on Linux. I've always written webapps on Linux but will obviously make the jump to an OSX server if it allows me to use the same datastore implementation on the iPhone and the server, the only job remaining being the Core Data <- Web Services XML translation that has to happen on the wire.

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  • Problem with WiX Votive 3.0 preprocessor

    - by Leith Bade
    I have just started using WiX for the first time. I added a WiX Votive project to my existing C project. To automatically select the correct source folder for the binaries add used the following: <Directory Id="INSTALLLOCATION" Name="Trapeze Capture For Objective" FileSource="$(var.CaptureForObjective.TargetDir)"> That results in the following error: 1C:\code\CaptureForObjective\Installer\Product.wxs(10,0): error CNDL0150: Undefined preprocessor variable '$(var.CaptureForObjective.TargetDir)'. The C project is called CaptureForObjective, and the WiX project is called Installer. What do I need to do to get this to work?

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  • Mobile development decision - Future wise (Iphone,android,symbian)

    - by Idan
    Hi, I would like to learn mobile development, but I'm not sure which category would be the most cost effective one. I know it's kind of a prophecy question, but anyhow, suggestions would be welcomed. So, as i'm pretty familiar with C++ development , I though about learning QT. I understand that using QT, I can develop once and then deploy to symbian,Mee-go, and of course to windows, linux and more. (does that mean I won't have to lean each OS internal calls, and just learn the QT library ? ) Learning development for android , mean I will have to learn Java, which is not my preferred way of action right now. Another option is to learn Objective-C, but as it only apply to Iphone development, I think it's a pretty narrow zone for me. I want to learn a library, which would be a wise decision career wise. Any recommendations ?

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  • Header file-name as argument

    - by Alphaneo
    Objective: I have a list of header files (about 50 of them), And each header-file has few arrays with constant elements. I need to write a program to count the elements of the array. And create some other form of output (which will be used by the hardware group). My solution: I included all the 50 odd files and wrote an application. And then I dumped all the elements of the array into the specified format. My environment: Visual Studio V6, Windows XP My problem: Each time there is a new set of Header files, I am now changing the VC++ project settings to point to the new set of header files, and then rebuild. My question: A bit in-sane though, Is there any way to mention the header from some command line arguments or something? I just want to avoid re-compiling the source every time...

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  • Graceful degradation on iPhone

    - by Seva Alekseyev
    How do I write a program for iPhone (Objective C++) that runs on OS 2.0 but takes advantage of 3.0 features if they're available? Example: copy&paste (class UIPasteboard). Nice feature to have, but I don't want to kill backward compatibility. Do I compile against SDK v. 3 or v. 2? If the latter, how do I create an instance of UIPasteboard, considering it's not declared in the headers? If the former, won't some C-linkage functions cause "unresolved reference" upon loading under OS 2.0?

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  • How write an ads server

    - by Nisanio
    Hi everyone I want to write an ads server (like OpenX), just for fun and learning (they aren't the same). But my idea, more than writing an entire application with web interface and so on, is to write a very tiny core that provides the basic functionality in the most efficient way, like a library that other people can use to write a complete application more fitted to their needs. The objective is to make it small, very efficient and fast. Can someone help me with a list of the minimal functionality needed for this kind of application?. An Ads Server isn't only a banner delivery, there are differents methods (for example OpenX uses a very weird javascript code that i don't understand completely) Any help or guidance is more than welcome...Thanks

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  • stanza like application for iPad

    - by Suresh Varma
    Hi, I want to try to create an eReader for the Ipad like Stanza but I can't really find any open source project or help in the web, I don't really know how to begin and how to do it. If someone have idea, know how to create an eReader, display content page by page, how to use epub lib on Iphone (objective-c) Thanks in advance for any help.. Happy coding Edit: Since the question is too big the simple thing i want to know is how to let epub file run on my iPad. Or if you have any link or tutorial which teaches how to use epub file with iPad or iPhone would be a great help. Thanks

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  • Disabling compression for IE pre SP2 with Apache mod_rewrite

    - by Ra y Mon
    I am trying to replicate this fix ( http://sebduggan.com/posts/ie6-gzip-bug-solved-using-isapi-rewrite ) with Apache mod_rewrite, but with no success... Can somebody help me translate those ISAPI rules to APACHE mod_rewrite? I don't know how to 'translate' those rules... My objective is to avoid sending compressed css and js when the user has an XP version prior to SP2, since there is a bug that prevents IE6&7 under SP1 to read the gzipped CSSs of my website BuscoUnViaje.com The rules I am trying to 'translate' to Apache mod_rewrite: RewriteCond %{HTTP:User-Agent} MSIE\ [56] RewriteCond %{HTTP:User-Agent} !SV1 RewriteCond %{REQUEST_URI} \.(css|js)$ RewriteHeader Accept-Encoding: .* $1 Thanks in advance...

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  • Use some CSS properties in many selectors without editing HTML or using JS

    - by OrB
    CSS: .bananaTrans { -moz-transition : all 1s ease-in-out; -webkit-transition: all 1s ease-in-out; transition : all 1s ease-in-out; } .bananaClass { color: yellow; } HTML: <div class="bananaClass">Banana Banana Banana</div> The objective is to make every element that has class "bananaClass" inherit the properties of "bananaTrans" without editing the HTML or using JavaScript. It ("bananaTrans") don't need exactly to be a class, it's just a bunch of properties to be used amongst other selectors.

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  • Easy way to Populate a Dictionary<string,List<string>>

    - by zion
    Greetings Guru's, my objective is to create a Dictionary of Lists, does a simpler technique exist? I prefer the List(t) to IEnumerable(t) which is why I chose the Dictionary of Lists over Ilookup or IGrouping. The code works but it seems like a messy way of doing things. string[] files = Directory.GetFiles (@"C:\test"); Dictionary<string,List<string>> DataX = new Dictionary<string,List<string>>(); foreach (var group in files.GroupBy (file => Path.GetExtension (file))) { DataX.Add (group.Key, group.ToList()); }

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  • Getting keyboard size from user info in Swift

    - by user3746428
    I have been trying to add some code to move my view up when the keyboard appears, however I am having issues trying to translate the Objective C examples into Swift. I have made some progress but I am stuck on one particular line. These are the two tutorials/questions I have been following: How to move content of UIViewController upwards as Keypad appears using Swift http://www.ioscreator.com/tutorials/move-view-when-keyboard-appears Here is the code I currently have: override func viewWillAppear(animated: Bool) { NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillShow:", name: UIKeyboardWillShowNotification, object: nil) NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillHide:", name: UIKeyboardWillHideNotification, object: nil) } override func viewWillDisappear(animated: Bool) { NSNotificationCenter.defaultCenter().removeObserver(self) } func keyboardWillShow(notification: NSNotification) { var keyboardSize = notification.userInfo(valueForKey(UIKeyboardFrameBeginUserInfoKey)) UIEdgeInsets(top: 0, left: 0, bottom: keyboardSize.height, right: 0) let frame = self.budgetEntryView.frame frame.origin.y = frame.origin.y - keyboardSize self.budgetEntryView.frame = frame } func keyboardWillHide(notification: NSNotification) { // } At the moment I am getting an error on this line: var keyboardSize = notification.userInfo(valueForKey(UIKeyboardFrameBeginUserInfoKey)) If someone could let me know what this line of code should be, I should manage to figure out the rest myself.

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  • developing iphone apps on windows is it worth the hassel

    - by kalpaitch
    I'm only after a simple solution and won't be developing anything particularly complex. But I'm wondering whether the hassals of developing an iPhone app NOT on MacOS are really that significant to avoid giving it a shot. Bearing in mind that I do have access to a mac every now and again. So I would be able to compile it using the official Apple supported SDK, but I just want to be able to develop it in my own environment (windows laptop). I heard someone mention a while ago that there are various objective C compilers that allow writing code in various other web technologies as well. Are these really valid. And am I alone in thinking Apple's whole attitude towards this is totally imoral. Charging $200 for the privelege of having your app unequivocally rejected etc etc and then not being allowed to look directly at Steve Jobs or his golden retrievers.

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  • Specify Windows Service Name on install with Setup Project

    - by sympatric greg
    Objective: In support of a Windows Service that may have multiple instances on a single machine, use a Setup Project to create an MSI capable of: Receiving user input for Service Name Installing service Serializing Service Name from 1 (so that the proper name can be used in logging and uninstall) My initial hope was to set Service Name in App.config (and then retrieve it during uninstall upon instantiation of the ServiceInstaller. This seems to have been naive, because it is not accessible during the install. If MyInstaller extends Installer, it can call base.Install(); however, my attempts to write to app.config (within MyInstaller.Install() and after base.Install()) are inneffective. So while the service can be installed with a custom Service Name, that name is not serialized and the installer is most displeased upon uninstall. How should this be done?

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