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  • Tension between the dependency inversion principle and avoiding "new" in C++?

    - by Kazark
    I have seen a lot of advice that it is better to do Type object; than Type* object = new Type(); in C++ whenever possible. I understand the rational behind this and appreciate it. But according to my understanding, to practice dependency inversion requires pointers, e.g.: Type* object = new Implementation();. (Or am I wrong about that?) Is there an inherent tension between the DIP and avoiding new when using C++? If so, what patterns/principles/practices can be used to mitigate this tension?

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  • Tell a user whether they have already viewed an item in a list. How?

    - by user2738308
    It is pretty common for a web application to display a list of items and for each item in the list to indicate to the current user whether they have already viewed the associated item. An approach that I have taken in the past is to store HasViewed objects that contain the Id of a viewed item and the Id of the User who has viewed that item. When it comes time to display a list of items this requires querying for the items, and separately querying for the HasViewed objects, and then combining the results into a set of objects constructed solely for the purpose of displaying them in the view. Each e.g li then uses the e.g. has_viewed property of the objects constructed above. I would like to know whether others take a different approach and can recommend alternative ways to achieve this functionality.

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  • Media Hint Brings Hulu, Netflix, and Pandora to non-U.S. Residents

    - by Jason Fitzpatrick
    Chrome: If you’re outside the United States you know all too well how irritating it can be when you’re denied access to streaming services because of your location. Stop missing out and start streaming with Chrome extension Media Hint. So what’s the secret sauce? The extensions routes your traffic–just the traffic for the streaming service–through U.S.-based proxies so you can enjoy content unavailable in your home country. The extension requires no configuration or registration, simply install it and visit Hulu, Netflix, or Pandora to start streaming. Media Hint is a free extension, Chrome only. Media Hint [via Digital Inspiration] 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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  • Why SEO is the Best Job Ever

    Have you learned about the best job in the world that will only requires you to wander around the tropical island of Hamilton on the Great Barrier Reef? The said job lasted for six months and they paid the winner for like $105000. Several jobs tell that they are the best job in the town. I actually know one: SEO practitioner. Even in the times of recession, SEO jobs are safe. Aside from that, here are the 5 things why SEO is the best job ever even in the time of recession.

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  • Transfer domain from godaddy to another registrar and (somewhat) maintain privacy?

    - by anonymous-one
    Does anyone know if its possible in any ways to do this? Transfer a private domain (via domainsbyproxy) registered at godaddy to another registrar. While I know moving a domain from godaddy requires the privacy to be disabled, what we were thinking of doing is the following: a) Update the whois info inside domains by proxy to a 3rd party. Most likely a law firm who would in essnece become our 'custodian'. b) Wait 60 days (?) c) Disable domain privacy. Now the law firms details would become public. d) Conduct the domain transfer. e) Take ownership of the domain at the new registrar. Does something like this sound possible? Does anyone know any other way to handle this? Thanks.

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  • Upgrade php5-gd on 12.04?

    - by metrobalderas
    I'm working with the GD library for image manipulation, to which I need to create some transparent PNGs. Instead, I'm getting a black background. I've looked everywhere on how to generate a blank, transparent PNG canvas with it and all the answers just don't work for me. On further inspection, I'm working with an old GD version: The functions needed to create a transparent PNG requires 2.0.1 altough 2.0.28 or later is recommended. I installed php5-gd with apt-get, and aptitude haven't found new packages. Do I have to add a new PPA? Where can I find it? What about forcing a version? Thanks in advance!

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  • Is there an apt command to download a deb file to the current directory?

    - by Lekensteyn
    I am often interested in the installation triggers (postinst, postrm) or certain parts (/usr/share or /etc) of packages. Currently, I am running the next command to retrieve the source code: apt-get source [package-name] The downside is, this file is often much bigger than the binary package and does not reflect the installation tree. Right now, I am downloading the packages through http://packages.ubuntu.com/: Search for [package-name] Select the package Click on amd64/i386 for download Download the actual file This takes too long for me and as someone who really likes the shell, I would like to do something like the next (imaginary) command: apt-get get-deb-file [package-name] I could not find something like this in the apt-get manual page. The most close I found was the --download-only switch, but this puts the package in /var/cache/apt/archives (which requires root permissions) and not in the current directory.

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  • Detect Subscribers To Event In Real Time

    - by xyz247
    I'm using C++ in the QT framework to write an application that detects an application running in memory. I can use the FindWindow method, but that requires that I know the windows title before hand. What would be the best method for identifying behavior of the application in memory to match it to a title? For example, if I know (before scanning) that a given application subscribes to the OnKeyPress event, is it possible to hook to it that method, detect all of the subscribers and enumerate them to find the application i'm looking for? If so, how would I go about doing that without integrating into the kernel? Thanks in advance for all the responses.

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  • Branding Changes for Java EE6

    - by Paul Sorensen
    Hi Everyone, As we move the Java EE6 exams from beta to production, you may notice that we have made a slight change in the branding. Instead of being branded Oracle Certified Professional (OCP), these new credentials are now branded Oracle Certified Expert (OCE). One area where we use the Expert brand is for credentials where the technology is advanced or broader than the path based credential requires. Some are high-end add-on certifications, and others have significant additional technological breadth. In these cases, the Expert brand is an indication that someone is tested in more advanced or in-depth skills - beyond the traditional path-based certification. A few examples are RAC Expert for DBAs, or SQL Expert - also for DBAs. Because (1) all of the Java EE6 credentials require that candidates become certified first in Java SE6, and (2) many people earn more than one Java EE credential, we felt that the Expert branding would be more appropriate. Thanks,

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  • Application for taking pretty screenshots (like OS X does)

    - by Oli
    I've been building a website for a guy who uses Mac OS X and occasionally he sends me screenshots of bugs. They come out looking like this: This is fairly typical of Mac screenshots. You get the window decorations, the shadow from the window and a white or transparent background (not the desktop wallpaper -- I've checked). Compare this to an Ubuntu window-shot (Alt+Print screen): It's impossible to keep a straight face and say the Ubuntu one anywhere near as elegant. My question is: Is there an application that can do this in Ubuntu? Edit: Follow up: Is there an application that can do this in one move? Shutter is pretty good but running the plugin for every screenshot is pretty tiresome as it doesn't seem to remember my preference (I want south-shadow and that requires selecting south, then clicking refresh, then save) and it's more clicks than I'd like. Is there a simple way of telling shutter I want south-shadow for all screenshots (except entire desktop and area-selection)?

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  • 2-components color model

    - by Cyan
    RGB is the natural color model for OpenGL. But a lot of other color models exist. For example, CMY(K) for printers, YUV for JPEG, the little cousins YCbCr and YCoCg, HSL & HSV from the 70's, and so on. All these models tend to share a common property : they are based on 3 components. Therefore my question is : Does it exist a 2-components color model ? I'm surprised to not find any. I was expecting something along the line of Hue+light could exist. I guess it cannot be as "complete" as a true 3-components color model, but a fine-enough approximation will be good for my usecase. The end objective is to store the 2 components into a single BC5 texture (GL_COMPRESSED_RED_GREEN_RGTC2 in OpenGL). The 3rd component requires a second fetch into a second texture, which hurts performance.

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  • Does language endorsement by different platforms (Android, iOS) hurt app development?

    - by MSe
    Developing iOS or OSX based applications typically requires knowledge of Objective C, since XCode is highly tailored to this language. Android, on the other hand, has chosen Java as it's preferred language for app development. Now, I know other programming languages can be used to develop applications on either platform, but lets be honest, it's a lot easier (and encouraged) to develop apps using these "native languages." As a new app developer, it seems like it would be much easier if there was a common language and development environment for developing applications on all the major platforms. This thought is probably too idealistic for a programming discussion, and I wouldn't be surprised if the SE vultures flew in to close this topic. But, here's my question. Do you think that language endorsement creates unreasonable barriers to entry for new programmers, or do you think it's beneficial in some way (if so, why) for these platforms to use completely different development environments and languages for app development?

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  • Suddenly my server reject all Post Requests

    - by Sharen Eayrs
    just go to meet-romance.com/test.htm The script there is simple. A form with a button <form action="test.htm" method="post"> <input name="Button1" type="submit" value="button" /> </form> It doesn't work. Press the button in firefox and I got connection reset thingy. I wonder why. It happens since yesterday. I have emigrated all domains that requires post requests somewhere else. I suppose a reset of server would fix that only to happen again some other time. So I wonder if anyone has a clue of why. All domains that require post have been moved to another server.

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  • Eclipse: AVD not appearing

    - by dgood1
    I have installed the ADT bundle for 32 bit. Using Ubuntu 12.04 Updated it a bit and installed the 2.3.3 Android version. I have Eclipse Indigo. When I use the Android Virtual Machine manager, after choosing a device, I get the progress bar after pressing "Start" but it disappears when it finishes and no virtual machine appears. No errors, too. I fear it would be a problem with my RAM (Laptop's = 512(or less). Allocated to Device = 128 - 300), having been told by a teacher that the emulator requires 2 GB RAM. I would like confirmation and/or solution.

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  • TGA loader: reverse y-axis

    - by aVoX
    I've written a TGA image loader in Java which is working perfectly for files created with GIMP as long as they are saved with the option origin set to Top Left (Note: Actually TGA files are meant to be stored upside down - Bottom Left in GIMP). My problem is that I want my image loader to be capable of reading all different kinds of TGA, so my question is: How do I flip the image upside down? Note that I store all image data inside a one-dimensional byte array, because OpenGL (glTexImage2D to be specific) requires it that way. Thanks in advance.

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  • Where to get PNG icons/graphics for game development for kids? [closed]

    - by at.
    Possible Duplicate: Where can I find free sprites and images? I'm teaching kids to program using Ruby and the gaming framework Gosu/Chingu. Kids love it, including the part where they have to look for the icons/graphics for their game objects. I direct them to iconarchive.com, but the selection is sometimes very limited, the graphics aren't always with transparent backgrounds and sometimes the art requires payment. I don't mind paying for an educational license of some sort, but I want the kids to easily select graphics they can use in their games. Is there another resource better suited for this purpose? I don't have a good solution for this, but would also love a site they can get cool background images for their games.

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  • Silverlight 4 + RIA Services - Ready for Business: Ajax Endpoint

    Continuing in our series, I wanted to touch on how a RIA Services can be exposed  your service in JSON.  This is very handy for Ajax clients.   The great thing is that enabling the JSON endpoint is that it requires NO changes whatsoever to the DomainService.  All you need to do is enable it is to add the JSON endpoint in web.config 1: <system.serviceModel> 2: <domainServices> 3: <endpoints> 4: <add name="JSON" 5:...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Chrome Mobile: The Mobile Web Developers Toolkit (Part 2)

    Chrome Mobile: The Mobile Web Developers Toolkit (Part 2) Building for mobile web requires a different mindset than desktop web development, and a different set of tools. The tools we're used to using often aren't available or would take up too much screen real estate. And going back to the dark ages of tweak/save/deploy/test/repeat isn't exactly optimal, so what can we do? Thankfully there are a number of great options - from remote debugging to emulation, mobile browsers are offering more and more tools to make our lives easier. We'll take a look at a couple of tools that you can use today to make cross platform mobile web development easier and then peer into the crystal ball to see what tools may bring in the future. Join us for Part 2 - as we take a look at a some of the many tools to make testing the mobile web easier. From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:00 More in Science & Technology

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  • job offer in dead technology

    - by bold
    I have a job offer in a dead technology (specific programming language) that I don't want to work with nor do I believe it will offer many jobs in the future. It requires twice a year travels abroad, which not a plus in my eyes. On the other hand the money on the table is high. What would you do? edit: as its not clear I got a job in a programming language that is different from the academic programming language I worked with. Now I see it as a mistake to head to that direction.

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  • Getting Started Integrating Windows Azure with Microsoft Office Solutions

    Nearly everyone starts learning anything new by beginning with something simple and adding incremental knowledge. One of the biggest challenges with Windows Azure and SQL Azure is that the simple beginning seems a bit more elusive. The "Hello World" application in the new world of cloud computing, while not overly complex in concept, requires a good measure of preparation and configuration. The following content is designed to aid you in getting started with Windows Azure and SQL Azure in the spirit...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • O'Reilly Deal of the day - 10/June/2012 - Introducing HTML5 Game Development

    - by TATWORTH
    Today's deal of the day from O'Reilly at http://shop.oreilly.com/product/0636920022633.do?code=DEAL is Introducing HTML5 Game Development"Making video games is hard work that requires technical skills, a lot of planning, and—most critically—a commitment to completing the project. With this hands-on guide, you’ll learn step-by-step how to create a real 2D game from start to finish. In the process, you’ll use Impact, the JavaScript game framework that works with HTML5’s Canvas element. Not only will you pick up important tips about game design, you’ll also learn how to publish Impact games to the Web, desktop, and mobile—including a method to package your game as a native iOS app. Packed with screen shots and sample code, this book is ideal for game developers of all levels."

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  • Which would a game development company prefer; UDK experience or C++ game projects?

    - by momboco
    Which would a game development company prefer? A developer with experience in UDK engine ? or, a developer with projects made entirely in c++ with a graphics engine like Ogre3D? I think that a coder can demonstrate better his abilities with games made in c++, because it requires a knowledge deeper in many fields. However, currently there is a lot of companies that develop his games with UDK. Now I don't know if is better specialize in a game engine like UDK.

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  • Looking for parallel programming problem

    - by Chris Lieb
    I am trying to come up with a problem that is easily solvable in a parallel manner and that requires communication between threads for a test. I also am trying to avoid problems that require require random waits, which rules out dining philosophers and producer-consumer (bounded buffer), two of the classics. My goal is for the student to be able to write the program in less than 20-30 minutes in front of a computer not knowing of the problem beforehand. (This is to prevent preparation more than to come up with something novel.) I am trying to stress the communication aspect of the program, though the multi-threaded nature is also important. Does anyone have some ideas? Edit: I'm using Google Go for the language and testing comprehension of the goroutines/channels combo vs an actors library that I authored.

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  • juju: How do I list all the relation variables and debug them interactively?

    - by mfisch
    I'm writing a charm that requires a mysql database, I found from looking at other charms that this (below) is how I get the info about the database: user=`relation-get user` password=`relation-get password` mysqlhost=`relation-get private-address` But I just found that from reading the wordpress charm example, is there a way to show all the relation variables that I can use? Also, while debugging my db-relation-changed script, I wanted to ssh into my host and interactively run those commands, for example relation-get user, but it didn't work. I resorted to having to restart everything and use juju log to print them out. This wasted a lot of time. Is there a way to print out these relations, either from my dev box or from the instance running my charm? (Below is what happens when I tried to interactively run relation-get): ubuntu@mfisch-local-tracks-0:~$ relation-get user usage: relation-get [-h] [-o OUTPUT] [-s SOCKET] [--client-id CLIENT_ID] [--format FORMAT] [--log-file FILE] [--log-level CRITICAL|DEBUG|INFO|ERROR|WARNING] [-r RELATION ID] [settings_name] [unit_name] No JUJU_AGENT_SOCKET/-s option found

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  • Is there an apt command to download a deb file from the repositories to the current directory?

    - by Lekensteyn
    I am often interested in the installation triggers (postinst, postrm) or certain parts of packages (like /usr/share and /etc). Currently, I am running the next command to retrieve the source code: apt-get source [package-name] The downside is, this file is often much bigger than the binary package and does not reflect the installation tree. Right now, I am downloading the packages through http://packages.ubuntu.com/: Search for [package-name] Select the package Click on amd64/i386 for download Download the actual file This takes too long for me and as someone who really likes the shell, I would like to do something like the next (imaginary) command: apt-get get-deb-file [package-name] I could not find something like this in the apt-get manual page. The most close I found was the --download-only switch, but this puts the package in /var/cache/apt/archives (which requires root permissions) and not in the current directory.

    Read the article

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