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  • Functions returning pointers

    - by fg nu
    C++ noob here. I have a very basic question about a construct I found in the C++ book I am reading. // class declaration class CStr { char sData[256]; public: char* get(void); }; // implementation of the function char* CStr::get(void) { return sData; } So the Cstr::get function is obviously meant to return a character pointer, but the function is passing what looks like the value (return sData). Does C++ know to return the address of the returned object? My guess would have been that the function definition would be return &sData.

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  • if ('constant' == $variable) vs. if ($variable == 'constant')

    - by Tom Auger
    Lately, I've been working a lot in PHP and specifically within the WordPress framework. I'm noticing a lot of code in the form of: if ( 1 == $options['postlink'] ) Where I would have expected to see: if ( $options['postlink'] == 1 ) Is this a convention found in certain languages / frameworks? Is there any reason the former approach is preferable to the latter (from a processing perspective, or a parsing perspective or even a human perspective?) Or is it merely a matter of taste? I have always thought it better when performing a test, that the variable item being tested against some constant is on the left. It seems to map better to the way we would ask the question in natural language: "if the cake is chocolate" rather than "if chocolate is the cake".

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  • La liste de Noël de Developpez (part. 2) : les livres

    La liste de Noël de Developpez partie 2 Notre sélection de livres 2012 Et oui, déjà Noël. Et à chaque fois la même question : « qu'est-ce que je vais bien pouvoir lui (leur) offrir ? ». Pire ! « Qu'est-ce que je vais bien pouvoir demander ? ». Pour vous aider, Developpez.com vous livre sa liste de cadeaux 2012 dans laquelle vous n'aurez plus qu'à piocher. Après la première partie sur les appareils et nos deux coups de coeurs pour les claviers en bois du Languedoc et les Pochettes de protection artisanales d'Asnières, voici notre liste de livres 2013. 1 - Si Steve ...

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  • DLNA Server/Control Point like Windows Media Player

    - by csde_rats
    Yes, I know that most questions ending with "like Windows" are odd, but this one really bothers me ;) If you ever used some DLNA renderer (in my case DLNA-enabled loudspeakers) you probably know the handy "play to"-feature. From my knowledge of DLNA stuff I would guess, that Windows Media Player is both a DLNA server and control point here, so my question is: Is there any similar software for Linux accomplishing the same thing with minimal configuration effort? I normally use Banshee for my music library, but it doesn't seem that there is anything available for Banshee...

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  • Which is easier to learn, Zend Framework, CakePHP or CodeIgniter?

    - by Kwame Boame
    I am new to programming but I know HTML, CSS and Jquery. I am a web designer but want to expand my skill to application development with frameworks. Specifically, PHP frameworks. I want to know which of the frameworks mentioned in the question is difficult to master. Also, my friend wants me to learn Ruby on Rails/ Python instead of PHP. What's your best advice for a newbie programmer who is looking to build online software/apps in the near future; say, after 3 months/6 months or a year of study and practice?

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  • Ubuntu 12.10 - Resolution stuck at 1024x768 using Open Source Radeon Driver

    - by mumble
    I'm using Ubuntu 12.10 with an ATI Radeon HD5670 card. I currently have the open source xorg-edgers driver. I've been using this driver interchangeably with the Radeon open source driver since fglrx seems to give me a lot of freezes. So I can't really use proprietary drivers, the Radeon driver seems to be stable for me, the resolution is the only problem. The resolution is stuck at 1024x768, where my monitor's native resolution is 1366x768. How do I enable that resolution? Going to System Settings Display only gives me 800x600 and 1024x768 by the way. And just another question, how do I know if xorg-edgers driver is enabled? When I run sudo lshw -c video, I still see the radeon driver. configuration: driver=radeon latency=0 Thanks a lot in advance!

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  • How should I organise classes for a space simulator?

    - by Peteyslatts
    I have pretty much taught myself everything I know about programming, so while I know how to teach myself (books, internet and reading API's), I'm finding that there hasn't been a whole lot in the way of good programming. I am finishing up learning the basics of XNA and I want to create a space simulator to test my knowledge. This isn't a full scale simulator, but just something that covers everything I learned. It's also going to be modular so I can build on it, after I get the basics down. One of the early features I want to implement is AI. And I want to take this into account as I'm designing my classes so I can minimize rewriting code. So my question: How should I design ship classes so that both the player and AI can use them? The only idea I have so far is: Create a ship class that contains stats, models, textures, collision data etc. The player and AI would then have the data for position, rotation, health, etc and would base their status off of the ship stats.

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  • Can a language support something like "Retry/Fix"?

    - by Aaron Anodide
    I was just wondering if a language could support something like a Retry/Fix block? The answer to this question is probably the reason it's a bad idea or equivalent to something else, but the idea keeps popping into my head. void F() { try { G(); } fix(WrongNumber wn, out int x) { x = 1; } } void G() { int x = 0; retry<int> { if(x != 1) throw new WrongNumber(x); } } After the fix block ran, the retry block would run again...

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  • Open-Source, Consensus-Based Development

    - by user20037
    Question: Is there an open source license that requires that my name (or a name that I want to promote) will always be associated with a project and derivations of it? (Either within the copyright notice (©) or other.) Motivation: - My main motivation is to gain reputation. If it gained wide use, it could look very good on resume (I understand this is a long shot). - An additional benefit is that it would explicitly state to prospective employers that this code was used by myself before I started with the company and will continue to be used when I leave. It is my understanding: I am aware that 99.9% of open-source projects never take off, and that I am taking a long shot in regard to advancing reputation/career. I understand that many don't read/respect licenses. I understand that open source projects take a lot of time to manage. I understand that 'Concensus-Based Development' is the best chance at motivating a community and that I may/will loose substantial control.

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  • /etc/profile not being sourced

    - by Marc
    For 11.04, I did a fresh install of my system. Part of that install was to install rvm, which sticks a rvm.sh in /etc/profile.d/. This doesn't work as /etc/profile (which loads each +r in /etc/profile.d/*.sh) is not being loaded. According to the documentation, the profile is only sourced if bash is run in login. To verify this, I invoked bash --login, after which rvm was available. This has worked for me in previous versions of Ubuntu without any configuration. That is, a fresh install of 10.10 will correctly source profile/.d. My question is: is there anything I'm doing wrong, or are there some new assumptions being made in Natty that have broken this? My current workaround is to source /etc/profile in ~/.bashrc (which is awful as profile is meant to load before bashrc's, but does the trick).

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  • Do search engines rank internal redirects negatively?

    - by siverd
    A client is in the late stages (code complete) of a website redesign and unfortunately hasn't implemented 301 redirects to point high traffic pages to the new URL's. As I understand it our only option at this point is to create redirects within the CMS. Our CMS allows us to do this: www.mysite.com/category/current-page.html will redirect to www.mysite.com/new-category-name/new-page.html The site now uses custom logic on our 404 page to check this list of redirects and if one exists forwards the user to the new-page.html I understand that using 301 redirects would be the correct way to maintain our page rank but I think that would require a code change which isn't possible. Question How will search engines respond to this? Will they wait until the redirect happens and allow us to keep our page rank (authority, trust, etc) or will they see the 404 page and down-rank us? Worst case...will they make our new-page.html start from a rank of "0"? Thanks for your help.

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  • Redirect error in Google Webmaster Tools report

    - by Aurelio De Rosa
    I built a CMS and I used it to create the following website http://www.tkdmontecatini.com . After some days, Google Webmaster Tools started to give me several "Redirect error" on some pages like the follows: http://www.tkdmontecatini.com/it/photogallery http://www.tkdmontecatini.com/it/pagina/9/Informazioni/Corsi/Chi-Siamo http://www.tkdmontecatini.com/it/pagina/2/Informazioni/Eventi/Eventi The funny things are: If I access those links from a browser, it's all right and I've not redirect loops or other similar issues If I use the "Fetch as Googlebot" function, I get a great "Success" result Question: Any idea of why this happens and how can I fix it?

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  • Install matlab with wine

    - by user33831
    I have been moving from windows to ubuntu recently. I have both windows 7 and matlab for windows license keys. My question is, is it possible to use wine to install matlab(for windows)? will the performance of matlab being affected? Except wine, dual-boot, and purchase a new matlab for linux license key, what other options do I have? Thanks for help Update: I just searched for virtual box, will it be a good alternative? Update: After trying with virtualbox, I believe it will not be a good option, because it only run with the ram allocated for it. Seems like I can only purchase a new license, if I dont want to dual-boot, which is quite not convenient. Thanks for all replies.

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  • href="x-default" for english version which isn't an auto-redirecting homepage or country selector?

    - by Noam
    for each url on my site, I'm auto-redirecting according to header accept language. The site arch is english version: http://mydomain.com/page spanish version http://es.mydomaina.com/page etc.. The english version is displayed unless I'm seeing a specific language other than en and that I support in the header, and then a redirect occurs. Google says this: For language/country selectors or auto-redirecting homepages, you should add an annotation for the hreflang value "x-default" as well: My pages aren't language selectors, nor are they the homepage. But I am auto-redirecting. My question is, should my english version be hreflang="x-default" or/and hrefland="en"?

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  • How are trajectories calculated and transmitted to other players in Multi-Player ?

    - by giulio
    I play alot of COD4. And can see tracers for gunfire, missles, care packages fall from helicopters etc. There is alot of activity. I am curious to know the algorithm (at a high level) that manages all this action when you have 20 people on a map shooting each other to death ? This question touches on the subject but doesn't ask for a more in-depth answer as to how you the developers go about calculating and transmitting movement and collision detection for projectiles, be it missles/bullets or any other object that is flying through the air in real-time.

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  • How can I allow a user to stream my videos securely?

    - by John Baber
    I've got a script that records 10 minute videos from a webcam to video1.mp4 video2.mp4 video3.mp4 video4.mp4 Then records over video1 again in rotation. I'd like one user to be able to view these in winamp or itunes by having a playlist with the four of them on repeat. (This is my way of getting around the many hours of figuring out how to actually livestream from a webcam with VLC). I don't see any examples of things like icecast being used for video, and I don't see any mentions of secure streaming. My question is, is there any way to have these videos be seen securely? I can do things like https on my server, but I don't have great access to the user's machine, so just sharing a directory by samba or sshfs isn't much of an option.

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  • Lesser-known Github features that I'm missing out on with Bitbucket? [closed]

    - by Ghopper21
    I've been using Bitbucket for my small-team development projects, with the assumption that it is more-or-less a Github clone with pricing that is better for my situation and support for Mercurial (which I don't need). However, I'm seeing there are material-if-not-overwhelming differences, e.g. Github's appealing and useful branches page versus Bitbucket's overly simple branch drop-down list. This makes me wonder: what else am I missing out on? What are the lesser known Github features that folks like me using Bitbucket to save money are missing out on? EDIT: following closure, I've asked for advice on making this question productive over at meta. See here.

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  • Chrome says my website is Serbian...how do I "force" chrome to use english?

    - by kristen
    Our website is based in the U.S. and all of our users are in the U.S. and the site is written in english. When we open the page in chrome, an alert comes up "This page is in Serbian...would you like to translate it"? I imagine it is some javascript or other code that is triggering that. Is there a way to force chrome to use "English" as the language? We tried googling this question but came up with nothing. thx!

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  • Arguments for or against using Try/Catch as logical operators

    - by James P. Wright
    I just discovered some lovely code in our companies app that uses Try-Catch blocks as logical operators. Meaning, "do some code, if that throws this error, do this code, but if that throws this error do this 3rd thing instead". It uses "Finally" as the "else" statement it appears. I know that this is wrong inherently, but before I go picking a fight I was hoping for some well thought out arguments. And hey, if you have arguments FOR the use of Try-Catch in this manner, please do tell. EDIT For any who are wondering, the language is C# and the code in question is about 30+ lines and is looking for specific exceptions, it is not handling ALL exceptions.

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  • Sending files via HTTP to web service

    - by Serguei Fedorov
    I am bit frustrated at the lack of information about this online. Here is the issue: I am in charge of creating a iOS application which sends sound data back and forth between the server and the app. The Audio is in small files and thus does not need to be streamed over, but rather it can be sent. Right now, I am using a TCP server I wrote to handle applications like this. However, I want to keep the system as simple as possible and writing your own server and client sockets can get a bit complex and leaves room for crashes. Overall it slows down development because I need to account for packet structure and other things. My question is, can I write an ASPX or PHP web service that lets me pass the files back and forth through GET or POST?

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  • Starting small custom development company, type of niches to target?

    - by Rick
    This is kind of a new years thing for me as I want to be more entrepreneurial going forward with programming and this is kind of a general question for anyone who may share the same ambitions as me. I have experience with web programming and, although I work full time for a company doing programming, I have some freelance programmers that I work with / employ for small projects. I want to see about taking things to the next level as far as building a small company doing custom development. I'm just not sure how to figure out what niches to target as far as what type of apps to build as demos, etc. I was thinking mobile (maybe Android or Iphone) but am just curious if anyone has any advice / resources. A lot of "web development" seems to end up being just using a CMS like Joomla or Wordpress, for smaller sites, so I want to figure a way to steer clear of this crowd and find some opportunity with companies / entrepreneurs who actually need real programming development done to build apps. Thanks for any advice

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  • How do I advertise for volunteers for my open source project

    - by Code-Guru
    I have found a couple of related questions here on programmers.SE: How/where would I best advertise my open source project, in order to maximize my odds of finding collaborators? Where to find open source volunteers? My question is slightly different because I am primarily looking for non-coders to help with a few things in my new open source project. In particular, I'd like one or more people to create an icon and other graphics and to work on a web site, wiki pages, and/or other documentation. My project is a front-end for a baseball card database. So reaching out to baseball card collectors might be useful. Other than that, I would just like anyone who would like to contribute in small ways to a modest project. Where are some good places to advertise and find non-coder volunteers?

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  • Sharing SCTP connection with multiple threads

    - by poly
    I have an application that needs to run in SCTP environment, I have a question in sharing the connection among multiple threads for packet receiving only, I've tried with the sctp_sendmsg and it worked without even locking the threads (is that been taking care of by the OS, in other words, is it thread safe to do that). I've tested many cases with the send and I can't see them out of sync. Anyway, back to the receiving, is it possible to create multiple threads and send each thread the sctp descriptor to start receiving messages? Do I need a lock here or is it ok without lock? I'm using C in linux.

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  • apt-get update error - binary-i386, binary-amd64 [duplicate]

    - by magamig
    This question already has an answer here: How can I fix a 404 Error when updating packages? 5 answers When I run: sudo apt-get update It shows me the following error: W: Failed to fetch http://ppa.launchpad.net/directhex/ppa/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://ppa.launchpad.net/directhex/ppa/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. I have googled for solutions, but none of what I found, have worked for me. Please give me your suggestions

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  • Can not enter password for sudo [duplicate]

    - by Michael
    This question already has an answer here: add repository to ubuntu from terminal with pgp key 3 answers I have used Ubuntu for several years, and I can not enter password for sudo, and this is when i wanna add a key to public.gpg for itunes10 it dos not work, and the password normal works wite sudo but not in the terminal when i enter: sudo wget -q "http:// deb.playonlinux.com/public.gpg" -o- | sudo apt-get add - and it says this 'sorry try again', and i just had installed itunes10, and have to add a key whit wget to public.gpg, and i tried to enter in the terminal: sudo apt-get update and the password works fine but not whit using sudo wget, and can some one please help.

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