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  • Using in app purchase to unlock features vs. using free & paid app versions for iPhone

    - by yabada
    I have an app that I was going to release as a free (lite) version with some of the total functionality and a paid full version with advanced functionality. Now, with in app purchase for free apps I am thinking of going that route with the ability to unlock features as needed. I'm not talking about a trial version that expires.I want people to be able to try out the app and get an idea of the interface and functionality before deciding to purchase the full functionality of each major section of the app, basically. Here's an analogy of what my app would be like. Let's say you have a cooking app that teaches you to cook in different styles. There could be major section for French, Italian, and Chinese. Each section could have some rudiments unlocked in the free app so users can see the UI and basics of the functionality. Then, the user could decide to purchase each major section (or not) individually with in app purchase or buy the full versioned app (with the free/paid model). One concern I have with offering a free app with in app purchase would be with feedback. I would be very clear in my description in the app store that there is in app purchase for full features but I'm worried that less serious users could/would leave negative feedback. I suppose that's always a risk but curious about any experience with this. It also seems that it could be a whole lot more complicated keeping track of what portions of the app are locked and unlocked with in app purchase. I know I'd have to have all the code for the full functionality and "lock" the portions that haven't been purchased. How do people usually lock portions of their code? I'm not talking about the process of purchasing (I've read the In App Purchase Programming Guide) but after the purchase has been made. Would I just keep track of what the user has purchased and put conditionals on the sections that are initially locked? Or is there another way to do this as well? My instinct is for the in app purchase (particularly since users could purchase the major sections that they want individually).

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  • NVIDIA CUDA SDK Examples Compilation Unsupported Architecture 'computer_20'

    - by Andrew Bolster
    On compilation of the CUDA SDK, I'm getting a nvcc fatal : Unsupported gpu architecture 'compute_20' My toolkit is 2.3 and on a shared system (i.e cant really upgrade) and the driver version is also 2.3, running on 4 Tesla C1060s If it helps, the problem is being called in radixsort. It appears that a few people online have had this problem but i havent found anywhere that actually gives a solution.

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  • What do you expect from a package manager for Emacs

    - by tarsius
    Although several hundred Emacs Lisp libraries exist GNU Emacs does not have an (internal) package manager. I guess that most users would agree that it is currently rather inconvenient to find, install and especially keep up-to-date Emacs Lisp libraries. These pages make life a bit easier Emacs Lisp List - Problem: I see dead people (links). Emacswiki - Problem: May contain traces of nuts (malicious code). These are some package managers XEmacs package manager package.el - ELPA pases install.el install-elisp.el plugin.el use-package.el jem-pkg.el epkg/elm - the one I am working. And this are some packages that provide functionality that might be useful in a package manager ell.el - Browse the Emacs Lisp List genauto.el - helps generate autoloads for your elisp packages date-calc.el - date calculation and parsing routines strptime.el - partial implementation of POSIX date and time parsing wikirel.el - Visit relevant pages on the Emacs Wiki loadhist.el, lib-requires.el, elisp-depend.el - Commands to list Emacs Lisp library dependencies. project-root.el - Define a project root and take actions based upon it So I would like to know from you what you consider important/unimportant/supplementary... in a package manager for Emacs. Some ideas Many packages (incorporate the Emacs Lisp List and other lists of libraries). Only packages that have been tested. Support for more than one package archive (so people can choose between many/tested packages). Dependency calculated based on required features only. Dependencies take particular versions into account. Only use versions that have been released upstream. Use versions from version control systems if available. Packages are categorized. Packages can be uninstalled and updated not only installed. Support creating fork of upstream version of packages. Support publishing these forks. Support choosing a fork. After installation packages are activated. Generate autoloads. Integration with Emacswiki (see wikirel.el). Users can tag, comment ... packages and share that information. Only FSF-assigned/GPL/FOSS software or don't care about license. Package manager should be integrated in Emacs. Support contacting author. Lots of metadata. Suggest alternatives before installing a particular package. Some discussions about the subject at hand emacs-devel 20080801 comp.emacs 20021121 RationalElispPackaging I am hoping for these kinds of answers Pointers to more implementations, discussions etc. Lengthy descriptions of a set of features that make up your ideal package manager. Descriptions of one particular disired/undisired feature. This has the advantage that the regular voting mechanism allows us to see what features are most welcomed. Feel free to elaborate on my ideas from above. Surprise me.

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  • how to make a queue in php with mysql

    - by robert
    hy, in my script i run a exec() function to make a movie file with ffmpeg. the problem is ffmpeg can run only 1 time on the server, if 2 people are online on server and first one already run ffmpeg i want the second to wait until the first end the process how to code this? thank you

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  • How to return plain XML from ADO.NET data service

    - by KHALIL
    Hi, I was wondering how to return plain XML from ADO.net data services I have exposed an ADO.net data service to different DEPARTMENTS in our company who are not so technical. The data returned is ATOM FEED which is kind a hard to read / interpret with its format, too much information is returned people from various departments would execute different queries ( HTTP Request) and i wanted them to display simple XML or atleast something more user friendly like HTML I have tried ACCEPT attribute of the request to be plain XML and it still returns ATOM Thanks -- Khalil

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  • Amazon Web Services : Fault tolerant solution

    - by Algorist
    Hi, I am using Boto library to write scripts for automating our jobs on AWS. My script actually starts a hadoop cluster using cloudera scripts and then does some customization. I am having a problem with retries. Seems like very command in my script fails once couple of days. I started adding retry to all the commands, but then the code is very clumsy and difficult to maintain. what do people do in general. Thank you Bala

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  • Frequently Asked Riddles in Job Interviews

    - by Faruz
    Were you asked any logic riddles in job interviews? Are you usually asking riddles in job interviews? What are they, and what are the answers? I was asked once how can you divide evenly 5 apples to 6 people without dividing any apple to 1/6 (or 1/12 or 1/18 etc.). (Would love to hear answers in the comments, I'm not sure my answer was the best)

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  • Variable naming for arrays - C#

    - by David Neale
    What should I call a variable instantiated with some type of array? Is it okay to simply use a pluralised form of the type being held? IList<Person> people = new List<Person>(); or should I append something like 'List' to the name? IList<Person> personList = new List<Person>();

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  • GWT vs. Cappuccino

    - by James
    Hi, I'm in the planning stage of a web application and I'm trying to choose between GWT and Cappuccino. I have an idea of which one I think is better, but my partner is sold on the other choice. I was hoping to get some feedback on pros and cons for each from people who have used one or the other or both. Thanks in advance for any insight you might have.

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  • Blogs / books with advise, tips and information from developers

    - by Wizzard
    Good Morning. I've been reading Joel Spolsky's (joelonsoftware) articles and they are full of good information and tips. He's a good writer and well worth reading. I am wondering what other good blogs/articles/books are out there written by similar people - really after leaders/managers/biz owners who are/were developers. Hope that makes a bit of sense ;-)

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  • What are the best Perl Introductions and references?

    - by Kieveli
    I've been programming for 15+ years, and I've done perl programming 3 times in the past. Every time I come back to it, I remember nothing of the language. It's very bizarre. Now it's time to hit perl again, and I'm wondering what the best Intro / Reference / Best Practice sites are that people use. Which Perl Intro / Reference site do you recommend?

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  • Looking for efficient scaling patterns for Silverlight application with distributed text-file data s

    - by Edward Tanguay
    I'm designing a Silverlight software solution for students and teachers to record flashcards, e.g. words and phrases that students find while reading and errors that teachers notice while teaching. Requirements are: each person publishes his own flashcards in a file on a web server, e.g. http://:www.mywebserver.com/flashcards.txt other people subscribe to that person's flashcards by using a Silverlight flashcard reader that I have developed and entering the URLs of flashcard files they want to subscribe to, URLs and imported flashcards being saved in IsolatedStorage the flashcards.txt file has the following simple format: title, then blocks of question/answers: Jim Smith's flashcards from English class 53-222, winter semester 2009 ==fla Das kann nicht sein. That can't be. ==fla Es sei denn, er kommt nicht. Unless he doesn't come. The user then makes public the URL to his flashcard file and other readers begin reading in his flashcards. In order to lower the bar for non-technical users to contribute, it will even be possible for them to save this text in a Google Document, which they publish and distribute the URL. The flashcard readers will then recognize it is a google document and perform the necessary screen scraping to get at the raw text. I have two technical questions about this approach: What is a best way to plan now for scalability issues: e.g. if your reader is subscribed to 10 flashcard files that are each 200K, it will have to download 2MB of text just to find out if any new flashcards are available. Or can I somehow accurately and consistently get at the last update date/time of text files on servers and published google docs? Each reader will have the ability to allow the person to test himself on imported flashcards and add meta information to them, e.g. categorize them, edit them, etc. This information will be stored in IsolatedStorage along with the important flashcards themselves. What is a good pattern to allow these readers to share and synchronize this meta data, e.g. so when you are looking at a flashcard you can see that 5 other people have made corrections to it. The best solution I can think of now is that the Silverlight readers will have to republish their data to a central database, but then there is the problem of uniquely identifying each flashcard, the best approach seems to be URL + position-in-file, or even better URL + original text of both question and answer fields, but both of these have their obvious drawbacks. The main requirement is that the bar for participation is kept as low as possible, i.e. type text in a google document, publish it, distribute the URL, and you're publishing within the flashcard community. So I want to come up with the most efficient technical solutions in order to compensate for the lack of database, lack of unique ids, etc. For those who have designed or developed similar non-traditional, distributed database projects like this, what advice, experience or best-practice tips you can share on the above two points?

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  • What exactly is Spring for?

    - by Maksim
    I hear a lot about spring, people are saying all over the web that Spring is good framework for web development. But what exactly is it for? How can I use it for my Web-Java application any examples.

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  • Ruby Net::SMTP - Send email with bcc: recipients

    - by Jay Godse
    I would like to use Ruby Net::SMTP to send email. The routine send_message( msgstr, from_addr, *to_addrs ) works well in my code for sending email, but it is not clear from this API how to send email to a list of people that need to be blind copied (bcc:). Am I missing something, or is it just not possible with Net::SMTP?

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  • Best SVN Tools

    - by pete blair
    Just wanted to see what tools for SVN people use, perhaps i can find some new cool ones. Im pretty much standard right now, ankh and tortoise. See also http://stackoverflow.com/questions/372687/good-visual-studio-svn-tool

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  • Things possible in IntelliJ that aren't possible in Eclipse?

    - by Epaga
    I have heard from people who have switched either way and who swear by the one or the other. Being a huge Eclipse fan but having not had the time to try out IntelliJ, I am interested hearing from IntelliJ users who are "ex-Eclipsians" some specific things that you can do with IntelliJ that you can not do with Eclipse. Note: This is not a subjective question nor at all meant to turn into a holy IDE war. Please downvote any flamebait answers. Thanks.

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  • Grails efficient hasMany-Relationship in View

    - by Jan
    Hi folks, I'm saving contacts (email, mobile phone, ICQ, AIM etc.) for people like this: class Person { static hasMany = { contacts: Contact } } class Contact { String code ContactType type } class ContactType { String name } In my view, I've written some Templates for displaying each contact with a select-box for the contact-type and a textfield for the code, spiced up with some JavaScript for adding and deleting. My question is: Is there an easy and elegant way to update the data similar to personInstance.properties = params or do I have to read out all the fields, deleting removed, updating changed and adding new ones?

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  • Android Market: Application not visible on some Devices

    - by Andreas
    Hello, i have written an application that needs to process outgoing calls. Everything works fine, the application has already a few hundred downloads, but now i get feedback from people who would like to download it, yet cannot find it. I have done some tests and have found that the permission "PROCESS_OUTGOING_CALLS" seems to be responsible for this. If i include it in an app, people with branded phones (at least in Germany) cannot find it, as soon as i remove this permission, everything is fine (when i re-insert it again, the app vanishes again) The weird thing is, that those users can see other apps which use this permission in the market. I have compared my manifest file to outputs from other manifest files and cannot understand why it doesn't work. Here is the manifest file for a test application i wrote to test the problem: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.eventkontor.marketavailabilitytest" android:versionName="1.2" android:versionCode="3" android:installLocation="auto"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".showMain" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="3" android:targetSdkVersion="4" /> <uses-permission android:name="android.permission.INTERNET"></uses-permission> <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></uses-permission> <uses-permission android:name="android.permission.READ_CONTACTS"></uses-permission> <uses-permission android:name="android.permission.VIBRATE"></uses-permission> <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission> <supports-screens android:normalScreens="true" android:resizeable="true" android:largeScreens="true" android:smallScreens="false"></supports-screens> </manifest> Does anyone have an idea what i'm doing wrong?

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  • Java JFrame EventQueue

    - by asmo
    In Java, to create and show a new JFrame, I simply do this: public static void main(String[] args) { new JFrame().setVisible(true); } However, I saw many people doing it like this: public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { new JFrame().setVisible(true); } }); } Why? Are there any advantages?

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  • Software development working from home

    - by johnhilbron
    Hi, Do you all think that working from home is the wave of the future for software development? In this day and age it seems like a logical next step for software developers to work from their homes and connect to each other using IM, video chat and phone. Etc, etc... What forces are in action pushing software development in this direction? What forces are keeping more people from working remotely? John

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  • fatal error C1083: Cannot open include file

    - by numerical25
    I looked at previous post based on this but they do not relate. I am receiving the following error. 1>c:\users\numerical25\desktop\intro todirectx\introtodirectx\chapter 4\init direct3d\init direct3d.cpp(9) : fatal error C1083: Cannot open include file: 'd3dApp.h': No such file or directory But clearly from the image shown below, its there In oppose to other people who are having issues finding the header on the physical drive. the compiler can not find my header from within the solution explorer.

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