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  • What are real-world examples of Gradle's dependency graph?

    - by Michael Easter
    As noted in the documentation, Gradle uses a directed acyclic graph (DAG) to build a dependency graph. From my understanding, having separate cycles for evaluation and execution is a major feature for a build tool. e.g. The Gradle doc states that this enables some features that would otherwise be impossible. I'm interested in real-world examples that illustrate the power of this feature. What are some use-cases for which a dependency graph is important? I'm especially interested in personal stories from the field, whether with Gradle or a similarly equipped tool. I am making this 'community wiki' from the outset, as it will be difficult to assess a 'correct' answer.

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  • How to use your computer to save the world?

    - by Francisco Garcia
    Sometimes I miss the "help other people" factor within computer-related fields. However, there are little things that we all can do to make this a better place—beyond trying to eradicate annoying stuff such as Visual Basic. You could join a cloud computing network such as World Community Grid to fight cancer, write a charityware application such as Vim, improve office IT infrastructure to support telecommuting and reduce CO2 emissions, use an ebook reader to save paper, ... What else can we do to help others? Which projects can have the biggest impact?

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  • Undefined behaviour with non-virtual destructors - is it a real-world issue?

    - by Roddy
    Consider the following code: class A { public: A() {} ~A() {} }; class B: public A { B() {} ~B() {} }; A* b = new B; delete b; // undefined behaviour My understanding is that the C++ standard says that deleting b is undefined behaviour - ie, anything could happen. But, in the real world, my experience is that ~A() is always invoked, and the memory is correctly freed. if B introduces any class members with their own destructors, they won't get invoked, but I'm only interested in the simple kind of case above, where inheritance is used maybe to fix a bug in one class method for which source code is unavailable. Obviously this isn't going to be what you want in non-trivial cases, but it is at least consistent. Are you aware of any C++ implementation where the above does NOT happen, for the code shown?

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  • My iPhone app has been downloaded by people all over the world, but has no use to anyone outside of

    - by Rob Lourens
    I wrote a basic free app for the bus schedule in my American university's town which was accepted into the app store on Saturday. Since then the app has been downloaded (assuming I'm reading the iTunes Connect reports right) 18 times in Canada, 6 times in Germany, and many times from other places all over the world. I can't figure out why all these people are downloading it... are there services automatically downloading free apps for some purpose that I can't even imagine? Should I put a price on it ASAP?

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  • Good real-world uses of metaclasses (e.g. in Python)

    - by Carles Barrobés
    I'm learning about metaclasses in Python. I think it is a very powerful technique, and I'm looking for good uses for them. I'd like some feedback of good useful real-world examples of using metaclasses. I'm not looking for example code on how to write a metaclass (there are plenty examples of useless metaclasses out there), but real examples where you have applied the technique and it was really the appropriate solution. The rule is: no theoretical possibilities, but metaclasses at work in a real application. I'll start with the one example I know: Django models, for declarative programming, where the base class Model uses a metaclass to fill the model objects of useful ORM functionality from the attribute definitions. Looking forward to your contributions.

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  • CString a = "Hello " + "World!"; Is it possible?

    - by Sanctus2099
    I'm making my own string class and I was wondering if there's any way to replace the compiler behaviour around " characters. As I said in the title I'd like to make it so that CString a = "Hello " + "World!"; would actually work and not give a compiler error telling that it can't add 2 pointers. My string class automatically converts to char* when needed and thus writing printf(a) would not break the code. I'm sure this is a rather weird question but if it's possible I'd really like to know how to do it. Thank you very much

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  • World Wide Publishing Service very slow to restart on IIS? Why?

    - by StacMan
    Every now and then, we look to restart our IIS server by restarting the "WWW Publishing Service". On most systems this would usually only take a minute or two, but this can often take up to 10 minutes to stop the server and restart. Does anyone know any way to work out what is taking so much time to stop the service? After reading up around the net I've learned this may be due to locked resources used by users and/or lower-level IIS cached items being recycled. But I cant seem to work out where I can validate if this is true on not. Also if anyone knows how to fix or speed this up, that would be excellent. We have a large codebase which contains over 280 aspx pages across the site. Our main domain contains about 100 aspx pages whilst the subdomains contain 15 or 20 each. Some specs: Code is written in C#; runs on .Net framework 2.0 Server Windows Web Server 2008 IIS7; DB running SQL Server 2008 Standard

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  • How to fix E: Internal Error, No file name for libc6

    - by Loren Ramly
    How to fix E: Internal Error, No file name for libc6, Like that will show If I do: $ sudo apt-get upgrade or $ sudo apt-get install package This is example : $ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: ginn hplip hplip-data libdrm-dev libdrm-intel1 libdrm-nouveau1a libdrm-radeon1 libdrm2 libgrip0 libhpmud0 libkms1 libsane-hpaio libunity-2d-private0 libunity-core-5.0-5 linux-generic-pae linux-headers-generic-pae linux-image-generic-pae printer-driver-hpcups printer-driver-hpijs unity unity-2d-common unity-2d-panel unity-2d-shell unity-2d-spread unity-common unity-services The following packages will be upgraded: alsa-base firefox firefox-globalmenu firefox-gnome-support firefox-locale-en icedtea-6-jre-cacao icedtea-6-jre-jamvm icedtea-7-jre-jamvm libdbus-glib-1-2 libdbus-glib-1-dev libgnutls-dev libgnutls-openssl27 libgnutls26 libgnutlsxx27 libssl-dev libssl-doc libssl1.0.0 linux-sound-base openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib openjdk-7-jdk openjdk-7-jre openjdk-7-jre-headless openjdk-7-jre-lib openssl sudo 27 upgraded, 0 newly installed, 0 to remove and 26 not upgraded. 3 not fully installed or removed. Need to get 0 B/126 MB of archives. After this operation, 3,072 B of additional disk space will be used. Do you want to continue [Y/n]? y E: Internal Error, No file name for libc6 I have follow instruction from here E: Internal Error, No file name for libssl1.0.0 . Which do: sudo apt-get update sudo apt-get clean sudo apt-get install -fy sudo dpkg -i /var/cache/apt/archives/*.deb sudo dpkg --configure -a sudo apt-get install -fy sudo apt-get dist-upgrade But stuck with same error E: Internal Error, No file name for libc6 when do command sudo apt-get install -fy. And I've been looking on google, but have not been successful until now. Thanks.

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  • How to deal with large open worlds?

    - by Mr. Beast
    In most games the whole world is small enough to fit into memory, however there are games where this is not the case, how is this archived, how can the game still run fluid even though the world is so big and maybe even dynamic? How does the world change in memory while the player moves? Examples for this include the TES games (Skyrim, Oblivion, Morrowind), MMORPGs (World of Warcraft), Diablo, Titan Quest, Dwarf Fortress, Far Cry.

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  • Information Driven Value Chains: Achieving Supply Chain Excellence in the 21st Century With Oracle -

    World-class supply chains can help companies achieve top line and bottom line results in today’s complex,global world.Tune into this conversation with Rick Jewell,SVP,Oracle Supply Chain Development,to hear about Oracle’s vision for world class SCM,and the latest and greatest on Oracle Supply Chain Management solutions.You will learn about Oracle’s complete,best-in-class,open and integrated solutions,which are helping companies drive profitability,achieve operational excellence,streamline innovation,and manage risk and compliance in today’s complex,global world.

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  • Simple 3D games to make for learning 3D game development (Unity)

    - by Vandell
    I have some experience doing 2D games. But I struggle so much doing anything in Unity, so I'´ve decided to make some simple 3D games as a way to learn this 'new dimension' in game development but I'm having a hard time choosing games to clone (a task that's relatively easy to do for 2D). What games should a 2D developer make to break in 3D and why? I'd like also note that I have no problem with the scripting languages.

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  • How to create an Orthographic display in OpenGL (ES) that handles different screen sizes and orientations?

    - by Piku
    I'm trying to create an iPad/iPhone game using GLES2.0 that contains a 3D scene with a heads-up-display/GUI overlaid on the top. However, this problem would also apply if I were to port my game to a computer and run the game in a resizable window, or allow the user to change screen resolutions... When trying to make the 2D GUI/HUD work I've made the assumption that all I'm really doing is drawing a load of 2D textured 'quads' on the screen and am trying to treat the orthographic projection as an old-style 2D display with 0,0 in the upper left and screenWidth,ScreenHeight in the lower right. This causes me all sorts of confusion when I rotate my ipad into Landscape mode since I can't work out what to put into my projection and modelview matrices to turn everything around the right way. It also gets messy if I want to support the iPad's large screen, an iPhone or a Retina display since I have to then draw three sets of textures for everything and work out which ones to use. Should I be trying to map the 2D OpenGL co-ords 1:1 with the screen? While typing out this question it occurs to me that I could keep my origin in the centre, still running -1/+1 along the axes. This would let me scale my 2D content appropriately on the different screen sizes, but wouldn't I end up with the textures being scaled and possibly losing quality? I'm using OpenGLES 2.0 and have a matrix library that has equivalents to the GLES1.1 glOrthof() and glFrustrum() calls.

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  • Information Driven Value Chains: Achieving Supply Chain Excellence in the 21st Century With Oracle -

    World-class supply chains can help companies achieve top line and bottom line results in today’s complex,global world.Tune into this conversation with Rick Jewell,SVP,Oracle Supply Chain Development,to hear about Oracle’s vision for world class SCM,and the latest and greatest on Oracle Supply Chain Management solutions.You will learn about Oracle’s complete,best-in-class,open and integrated solutions,which are helping companies drive profitability,achieve operational excellence,streamline innovation,and manage risk and compliance in today’s complex,global world.

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  • How can I create an orthographic display that handles different screen dimensions?

    - by Piku
    I'm trying to create an iPad/iPhone game using GLES2.0 that contains a 3D scene with a heads-up-display/GUI overlaid on the top. However, this problem would also apply if I were to port my game to a computer and run the game in a resizable window, or allow the user to change screen resolutions... When trying to make the 2D GUI/HUD work I've made the assumption that all I'm really doing is drawing a load of 2D textured 'quads' on the screen and am trying to treat the orthographic projection as an old-style 2D display with 0,0 in the upper left and screenWidth,ScreenHeight in the lower right. This causes me all sorts of confusion when I rotate my ipad into Landscape mode since I can't work out what to put into my projection and modelview matrices to turn everything around the right way. It also gets messy if I want to support the iPad's large screen, an iPhone or a Retina display since I have to then draw three sets of textures for everything and work out which ones to use. Should I be trying to map the 2D OpenGL co-ords 1:1 with the screen? While typing out this question it occurs to me that I could keep my origin in the centre, still running -1/+1 along the axes. This would let me scale my 2D content appropriately on the different screen sizes, but wouldn't I end up with the textures being scaled and possibly losing quality? I'm using OpenGLES 2.0 and have a matrix library that has equivalents to the GLES1.1 glOrthof() and glFrustrum() calls.

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  • More smaller maps among which player can travel

    - by davidv
    I am developing 2d game, where maps are tile based, small about 20x20 tiles and player can travel between a lot of maps (in my game rooms) like this. The maps are connected sometimes verticaly and sometimes horizontaly and together they make one big cave. Should I create a class where one 2d array holds all the maps (another 2d arrays), or is there any other way? Whats the most efficient way to create them in this class? Thank you for your help.

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  • How to draw a spotlight in 3D

    - by RecursiveCall
    To be clear, I am not talking about the light result (the lit area) but the spotlight itself, like this The two common suggestions that I tried are 2D image and a 3D cone. The problem with the pre-regenerated 2D image is that it always look 2D and flat no matter how it is rotated in world space. The cone on the other hand is next to impossible to control when it comes to fade distance, it doesn't look soft (smooth) and it is expensive to compute.

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  • desktop-name ("Ubuntu Desktop")

    - by user109581
    i see someone asked how to change in unity top left corner label (ubuntu desktop) there is an answer but it is no very clear, can someone explain it with more details, i am pasting the answer that was posted but i need more directions, thanks You would likely need to build the unity or unity-2d source. Currently in unity-5.12 would be found in /plugins/unityshell/src/PanelMenuView.cpp, line 78 _desktop_name(_("Ubuntu Desktop")) In unity-2d, unity-2d 5.12, /panel/applets/appname/appnameapplet.cpp line 369 d-m_label-setText(u2dTr("Ubuntu Desktop"));

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  • World's Most Challening MySQL SQL Query (least I think so...)

    - by keruilin
    Whoever answers this question can claim credit for solving the world's most challenging SQL query, according to yours truly. Working with 3 tables: users, badges, awards. Relationships: user has many awards; award belongs to user; badge has many awards; award belongs to badge. So badge_id and user_id are foreign keys in the awards table. The business logic at work here is that every time a user wins a badge, he/she receives it as an award. A user can be awarded the same badge multiple times. Each badge is assigned a designated point value (point_value is a field in the badges table). For example, BadgeA can be worth 500 Points, BadgeB 1000 Points, and so on. As further example, let's say UserX won BadgeA 10 times and BadgeB 5 times. BadgeA being worth 500 Points, and BadgeB being worth 1000 Points, UserX has accumulated a total of 10,000 Points ((10 x 500) + (5 x 1000)). The end game here is to return a list of top 50 users who have accumulated the most badge points. Can you do it?

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