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• How important is to be able to write code like you would write prose

  - by benhowdle89

  Recently I heard of a company that, for interviews, asks potential employees to stand up and write out code on a whiteboard. Apparently that freaked alot of interviewees out. This got me thinking and even though I consider myself a reasonable programmer, I would be hard pressed to write lengthy code out without referring to previous code I had written or doing a quick Google search. How many programmers could safely say "Yes I could write all my code out just like I was writing an email"?

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• How to refactor my design, if it seems to require multiple inheritance?

  - by Omega

  Recently I made a question about Java classes implementing methods from two sources (kinda like multiple inheritance). However, it was pointed out that this sort of need may be a sign of a design flaw. Hence, it is probably better to address my current design rather than trying to simulate multiple inheritance. Before tackling the actual problem, some background info about a particular mechanic in this framework: It is a simple game development framework. Several components allocate some memory (like pixel data), and it is necessary to get rid of it as soon as you don't need it. Sprites are an example of this. Anyway, I decided to implement something ala Manual-Reference-Counting from Objective-C. Certain classes, like Sprites, contain an internal counter, which is increased when you call retain(), and decreased on release(). Thus the Resource abstract class was created. Any subclass of this will obtain the retain() and release() implementations for free. When its count hits 0 (nobody is using this class), it will call the destroy() method. The subclass needs only to implement destroy(). This is because I don't want to rely on the Garbage Collector to get rid of unused pixel data. Game objects are all subclasses of the Node class - which is the main construction block, as it provides info such as position, size, rotation, etc. See, two classes are used often in my game. Sprites and Labels. Ah... but wait. Sprites contain pixel data, remember? And as such, they need to extend Resource. But this, of course, can't be done. Sprites ARE nodes, hence they must subclass Node. But heck, they are resources too. Why not making Resource an interface? Because I'd have to re-implement retain() and release(). I am avoiding this in virtue of not writing the same code over and over (remember that there are multiple classes that need this memory-management system). Why not composition? Because I'd still have to implement methods in Sprite (and similar classes) that essentially call the methods of Resource. I'd still be writing the same code over and over! What is your advice in this situation, then?

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• How to practice typing of programmer keys such as tilde, pipe and programmer quote?

  - by user7893

  It is nice that there are services such as TypeRacer where you can practice casual writing but I want to practice programmer keys, covers more numbers and keys not used by regular typist. There was some tutor with which I practiced some programmer keys and noticed that my speed dropped dramatically from 70-80 wpm to even about 15-30 wpm, it also trains different muscles. So how can I practice just programming keys with programming texts or just random code pieces?

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• Best C++ containers for UI in Games.

  - by Vijayendra

  I am writing some UI stuff for my games in C++. Basically its a very common problem, but I dont know the best answer yet. Suppose inside my UI Library I have a view class which renders 2D/3D scene. This view can contain many subviews. I needs a container which allows me to iterate over these views fast and also insert/delete subviews. I am not sure which container is best for the job - list, vector or something else?

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• Monitoring C++ applications

  - by Scott A

  We're implementing a new centralized monitoring solution (Zenoss). Incorporating servers, networking, and Java programs is straightforward with SNMP and JMX. The question, however, is what are the best practices for monitoring and managing custom C++ applications in large, heterogenous (Solaris x86, RHEL Linux, Windows) environments? Possibilities I see are: Net SNMP Advantages single, central daemon on each server well-known standard easy integration into monitoring solutions we run Net SNMP daemons on our servers already Disadvantages: complex implementation (MIBs, Net SNMP library) new technology to introduce for the C++ developers rsyslog Advantages single, central daemon on each server well-known standard unknown integration into monitoring solutions (I know they can do alerts based on text, but how well would it work for sending telemetry like memory usage, queue depths, thread capacity, etc) simple implementation Disadvantages: possible integration issues somewhat new technology for C++ developers possible porting issues if we switch monitoring vendors probably involves coming up with an ad-hoc communication protocol (or using RFC5424 structured data; I don't know if Zenoss supports that without custom Zenpack coding) Embedded JMX (embed a JVM and use JNI) Advantages consistent management interface for both Java and C++ well-known standard easy integration into monitoring solutions somewhat simple implementation (we already do this today for other purposes) Disadvantages: complexity (JNI, thunking layer between native C++ and Java, basically writing the management code twice) possible stability problems requires a JVM in each process, using considerably more memory JMX is new technology for C++ developers each process has it's own JMX port (we run a lot of processes on each machine) Local JMX daemon, processes connect to it Advantages single, central daemon on each server consistent management interface for both Java and C++ well-known standard easy integration into monitoring solutions Disadvantages: complexity (basically writing the management code twice) need to find or write such a daemon need a protocol between the JMX daemon and the C++ process JMX is new technology for C++ developers CodeMesh JunC++ion Advantages consistent management interface for both Java and C++ well-known standard easy integration into monitoring solutions single, central daemon on each server when run in shared JVM mode somewhat simple implementation (requires code generation) Disadvantages: complexity (code generation, requires a GUI and several rounds of tweaking to produce the proxied code) possible JNI stability problems requires a JVM in each process, using considerably more memory (in embedded mode) Does not support Solaris x86 (deal breaker) Even if it did support Solaris x86, there are possible compiler compatibility issues (we use an odd combination of STLPort and Forte on Solaris each process has it's own JMX port when run in embedded mode (we run a lot of processes on each machine) possibly precludes a shared JMX server for non-C++ processes (?) Is there some reasonably standardized, simple solution I'm missing? Given no other reasonable solutions, which of these solutions is typically used for custom C++ programs? My gut feel is that Net SNMP is how people do this, but I'd like other's input and experience before I make a decision.

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• How to programmatically fetch a list of applications from the Software Center

  - by David Planella

  Im writing a PyGI app where I'd like to show a list of matching applications from the Ubuntu Software Centre in an auto-completion text entry or dropdwon. I haven't yet figured out the best way to present the information, I just want to make it easier for the user to type the name of an application. But before that, I'd like to figure out how to get the data. Is there an API to get a list of all applications from the Software Centre, or indirectly through the Applications Dash in Unity?

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• Ubuntu 11.10 won't start after system update

  - by ShiroGeek

  Well i have a big problem with ubuntu 11.10 i really really like it but unfortunately whenever i make the update it simply freezes on the violet screen at the beginning without any writing :S I've reinstalled it three times Here is my comp Config Core2Duo 4Go of RAM Ati Radeon HD 5770 1Go ( something idk tells me it come from its driver but not sure) Ubuntu 11.10 64 Bits Windows 7 also installed 6Go of SWAP TWo dedicated ubuntu partitions one mounted as / And the other one as /home Thanks a lot

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• Articles Submission - Main 3 Reasons You Need This Software Program

  Article marketing continues to be a crucial part of every search engine optimization campaign. Article marketing continues to be simply writing articles pertaining to your enterprise and submitting them to the directories found online.

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• systray-whitelist changes are only temporary (how do i make them permenant?)

  - by Ed Sweeney

  I am writing a Qt C++ app. The notifications from trayIcon->showMessage(title, message) show up fine after I run the following command and logout/login: gsettings set com.canonical.Unity.Panel systray-whitelist "['all']" But after a few minutes the notifications don’t display any more and I have to repeat the gsettings logout/login. How can I get unity to play my messages without this fooling around when my user installs my app? Thanks for any help!

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• Unix tools in business use: are they helpful?

  - by Prometheus

  Do you think knowing Unix tools like sed, awk, LaTeX, Perl give you a great edge in the business world? (e.g. being a manager) From my short reflection, the only profession that needs those sort of (plain text) tools is programming. Because even when I do creative writing, I rarely ever need it. I mean, do CEOs and executives of large corporations ever learn this kind of stuff if they were not CS major to begin with?

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• Google I/O 2011: How to Get Your Startup Idea Funded by Venture Capitalists

  Google I/O 2011: How to Get Your Startup Idea Funded by Venture Capitalists Don Dodge, Joe Kraus, Paul Buchheit, Seth Priebatsch Have an idea and want to start a company? Learn how to attract investors, and what they want to see before writing a check. Hear from entrepreneurs who have raised money and VCs who have funded them. From: GoogleDevelopers Views: 16911 146 ratings Time: 01:00:27 More in Science & Technology

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• Kernel module implementation estimate

  - by Ivan Teterevkov

  I have a very abstract question about a kernel module writing estimate. How much dev-hours/months may required to write or, especially, port an existant kernel driver for a new PCI HBA from one operating system to another (with different kernel API)? I am porting an already written kernel module for 82599 for Linux kernel to OS X's IOKit and try to get a working alpha. I can't imagine for how long this task may expand in time.

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• Google I/O 2012 - From Weekend Hack to Funded Startup - How to Build Your Team and Raise Money

  Google I/O 2012 - From Weekend Hack to Funded Startup - How to Build Your Team and Raise Money Naval Ravikant, Rich Miner, Kevin Rose Have an idea and want to start a company? Learn how to attract investors, and what they want to see before writing a check. Hear from entrepreneurs who have raised money and VCs who have funded them. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 0 0 ratings Time: 01:00:30 More in Science & Technology

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• Application name licensing issue

  - by Praetorian

  Hi, I started writing an application for Windows Phone marketplace, at the time only making sure that the name I gave it wasn't being used by any other app on the marketplace. I just found out that the same name is being used by a, seemingly popular, SourceForge project. Is this a problem? I haven't released my app yet so I could rename it, but I really like the name and would prefer not to unless it is an issue.

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• Windows Azure Platform for Enterprises

  Cloud computing has already proven worthy of attention from established enterprises and start-ups alike. Most businesses are looking at cloud computing with more than just idle curiosity. As of this writing, IT market research suggests that most enterprise IT managers have enough resources to adopt cloud computing in combination with on-premises IT capabilities.

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• Windows Azure Platform for Enterprises

  Cloud computing has already proven worthy of attention from established enterprises and start-ups alike. Most businesses are looking at cloud computing with more than just idle curiosity. As of this writing, IT market research suggests that most enterprise IT managers have enough resources to adopt cloud computing in combination with on-premises IT capabilities.

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• Achieving decoupling in Model classes

  - by Guven

  I am trying to test-drive (or at least write unit tests) my Model classes but I noticed that my classes end up being too coupled. Since I can't break this coupling, writing unit tests is becoming harder and harder. To be more specific: Model Classes: These are the classes that hold the data in my application. They resemble pretty much the POJO (plain old Java objects), but they also have some methods. The application is not too big so I have around 15 model classes. Coupling: Just to give an example, think of a simple case of Order Header - Order Item. The header knows the item and the item knows the header (needs some information from the header for performing certain operations). Then, let's say there is the relationship between Order Item - Item Report. The item report needs the item as well. At this point, imagine writing tests for Item Report; you need have a Order Header to carry out the tests. This is a simple case with 3 classes; things get more complicated with more classes. I can come up with decoupled classes when I design algorithms, persistence layers, UI interactions, etc... but with model classes, I can't think of a way to separate them. They currently sit as one big chunk of classes that depend on each other. Here are some workarounds that I can think of: Data Generators: I have a package that generates sample data for my model classes. For example, the OrderHeaderGenerator class creates OrderHeaders with some basic data in it. I use the OrderHeaderGenerator from my ItemReport unit-tests so that I get an instance to OrderHeader class. The problem is these generators get complicated pretty fast and then I also need to test these generators; defeating the purpose a little bit. Interfaces instead of dependencies: I can come up with interfaces to get rid of the hard dependencies. For example, the OrderItem class would depend on the IOrderHeader interface. So, in my unit tests, I can easily mock the behaviour of an OrderHeader with a FakeOrderHeader class that implements the IOrderHeader interface. The problem with this approach is the complexity that the Model classes would end up having. Would you have other ideas on how to break this coupling in the model classes? Or, how to make it easier to unit-test the model classes?

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• How often do you use data structures (ie Binary Trees, Linked Lists) in your jobs/side projects?

  - by Chris2021

  It seems to me that, for everyday use, more primitive data structures like arrays get the job done just as well as a binary tree would. My question is how common is to use these structures when writing code for projects at work or projects that you pursue in your free time? I understand the better insertion time/deletion time/sorting time for certain structures but would that really matter that much if you were working with a relatively small amount of data?

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• Textual descriptions of 8-bit and 16-bit game engines

  - by ixtmixilix

  I found a good description of the engine in the Sonic games. It describes roughly how the engine works for people writing their own clones. In my case, I am simply interested in getting a general view of how the many 8-bit and 16-bit game engines worked on their respective consoles. So, this is a big-list style question asking, what other online descriptions of specific game engines have people found?

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• Serialization vs. Marshaling

  Are you somewhat confused between Serialization and Marshaling? This writing would break this confusion up, it would give you a basic understanding of the process of Serialization and the process of Marshaling, and how you can get the most out of each.

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• Does MVC apply only to web

  - by Deeptechtons

  It is almost and instantaneous whenever I talk to developers about Model View Controller (MVC) they say you make a request to a url the server builds a entity (MODEL) and provides you with visual representation of that model. So does this mean MVC is only for the web or have I been meeting people who are just developers who employ MVC for writing web applications? Are there usages for MVC on desktop style applications? I for one am new to paradigm and would like to know of any super-set to MVC

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• SEO - Surefire Tips to Help You Get Better Search Engine Rankings

  When people build websites, there are a lot of intentions for which they do this and one of the reasons is because people want to make use of SEO tips that is make people to be driven to their websites which will in turn fetch money for them. This is done by making a piece of writing that is known as content and this is a very rewarding but difficult task although it has been proven that there are ways through which the work can be made to reduce.

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• Write SEO Articles For Humans, Not Machines

  We would like other people to be able to find our web pages and read our writing or see our images. In other words, we need to be present in web search results. SEO is an important factor to reach high positions in search results but you should always create pages for humans and only optimize them for search engines.

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• Increase Your SEO Article ROI

  Submitting content to article websites remains one of the staple practices of SEO link building strategies but it is also one of the most neglected. It is often seen as a necessary evil because of the time it takes, the mundane nature of the task and because it very rarely generates direct traffic. Here are four ways in which you can increase what you get from your article writing strategy while minimising what you put in.

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• Search Engine Optimization - The Best Way to Market Your Online Based Business

  There are many things to consider, when you start your own online marketing campaign via search engine optimization services. If you're an entrepreneur, you won't have time for all this, meaning you would need to hire someone to do all the work related to the optimization and the functioning of the website. The lucky fact is that most of the companies, which offer search engine optimization (SEO) services, also provide web design, content writing, web development, social bookmarking, and other related services.

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