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• Random List of numbers in C

  - by Ant

  I have just started a C programming course and so far have only done the basics like printf, read a little on variables etc on the course book. The teacher has tasked us with writing a program that will take a value entered by the user, this will be the number of students in the class (25 at the moment but can be variable). It will then list the number of students randomly and place them in 3 columns. The purpose is to sort students into groups of 3 randomly, then display on the screen in columns. Now my question is not for the code that defeats the object of me attempting the exercise, but how to structure it. I can see that using an array can be used to display the list, but really after some pointers on how best to approach the problem in blocks, then I can attempt to program each block.

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• When should I clear an auxilliary render target?

  - by Raptormeat

  I'm using a few different render targets in my game in addition to the back buffer. These other render targets are only used in a few places, for specific tasks. I'm wondering when I should be clearing them. Right now I clear all of my render targets at the beginning of the frame, and it seems like I'm waiting for all the textures to clear before the rest of the drawing gets underway. Would it be more efficient to clear these textures later in the frame, when they aren't being used? Is there any hope of the GPU sort of clearing them "on the side" while unrelated rendering is happening? Or are these tasks always sequential and will I always need to wait for clearing?

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• Is this the place to ask SEO questions [on hold]

  - by user39206

  I'm adding business listings to an existing website of which Google has sort of been referencing well but my Meta tags have a lot to be desired! Due to other work commitments I have kind of neglected the site but now think I should put the proper time and effort into getting it just right as it does earn me money. I am a developer so I have all the necessary skills to build the site, it's almost done!. Now I'm just a little worried that I could do something wrong and loose the rapport I've built up with Google in the past or be ban. Especially with the new tags I see like: <link rel=”publisher” href=”https://plus.google.com/[YOUR BUSINESS G+ PROFILE HERE]“/> Really I just want to know for now, is this the place to ask SEO question?

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• Bing Maps : sortie du SDK pour Windows 8, une version pour JavaScript, une autre pour C#, C++ et VB

  Microsoft sort le SDK de Bing Maps pour Windows 8 Visual Studio 2012 et le Windows Store pour JavaScript et pour les développements natifs L'actualité de la cartographie est chargée cette semaine. Accord Nokia-Oracle autour des Nokia Maps, bogue des cartes d'Apple dans iOS, ajout des lieux fermés dans Google Maps. Et aujourd'hui, arrivée du SDK de Bing Maps pour Windows 8. Les développeurs pourront donc à présent faire le choix des cartes de Microsoft pour leurs applications destinées au Windows Store. Deux versions sont disponibles. Une pour...

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• If you need more than 3 levels of indentation, you're screwed?

  - by jokoon

  Per the Linux kernel coding style document: The answer to that is that if you need more than 3 levels of indentation, you're screwed anyway, and should fix your program. What can I deduce from this quote? On top of the fact that too long methods are hard to maintain, are they hard or impossible to optimize for the compiler? I don't really understand if this quote encourages better coding practice or is really a mathematical / algorithmic sort of truth. I also read in some C++ optimizing guide that "dividing up a program into more functions improves its design" is frequently taught in CS courses, but it should be not done too much, since it can turn into a lot of JMP calls (even if the compiler can inline some methods by itself).

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• Question about initial interview for job [closed]

  - by JustLikeThat

  So I feel kind of stupid having to ask this but tomorrow I have a phone interview with a good company. Phone interviews themselves not a big deal for me, but having to tell them my salary expectations is. The position that I'm applying for is a mid-level software engineer, I fit all of the requirements (I'm not overly qualified by any means), and I want to be sure I'm not asking for an amount that would be absurd or too little. Now, assuming I get a second interview and have to complete some sort of puzzle/code/work, they may pay me +/- whatever I asked for based upon their evaluation of my work. What I'd like to know, is what is a good amount to ask for? Or am I completely wrong with my assumptions? Either way some advice would be much appreciated!

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• "Permission denied" error

  - by user1175807

  Alright so I installed Ubuntu last night and I am very new to everything. Right now I am trying to run a program called JES, (Jython Environment for Students). The instructions tell me to cd to the JES directory I have, so I type cd /home/Programs/JES It takes me to the directory I need to be in, so far so good. Then I have to type in: ./JES.sh And I get this returned to me: bash: ./JES.sh: Permission denied I have very little comprehension of what to do in Terminal or anything of the sort. Any help would be appreciated. I have tried using sudo -l to get permissions but it still persists.

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• Online File Library

  - by janvdl

  I'm looking for a preferably PHP and web based system, to run on Ubuntu server. Basically it should be a "file forum" in the sense that users can register and be approved to post files to categories. Users with "read" privileges can then go through the categories and download files. Basically I sort of want a FTP-like system, but it should be as easy to manage users, categories, etc as that of a forum system like vB or phpBB. If it could have a forum look and feel that would also be great, but I don't want any discussions taking place.

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• Sound Delay With AVAudio Player

  - by Will Youmans

  I'm using the following code in my viewDidLoad to load a sound: NSURL * url = [NSURL fileURLWithPath: [NSString stringWithFormat:@"%@/Moto - Hit Sound.mp3", [[NSBundle mainBundle] resourcePath]]]; NSError * error; hitSoundPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:url error:&error]; hitSoundPlayer.numberOfLoops = 0; Then I'm using this in a void method to play the sound: if(CGRectIntersectsRect(main.frame, enemy1.frame)){ [hitSoundPlayer play]; } This does seem to work, however the first time the sound is played there is a lot of lag and the game stops temporarily. I'm using this same method for when in an IBAction and it works fine, it must be the fact that it's also detecting a collision that makes the sound lag. If I want to be able to play sounds quickly and on the spot without any sort of lag am I doing the right thing? Do I want to use another method? I'm not using any frameworks like cocos2d. If you need to see any more code just ask.

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• How should game objects with fixed positions in the world be positioned?

  - by mars

  I have some game objects that are always at the same position in my game world as they make up some of the scenery of my puzzle game. At the moment, their positions are sort of hard coded in and some of their positions are calculated relative to the hard coded positions of other objects at the time of game initialization. This has been hard to maintain because whenever I've decided to change the position of these scenery objects as the game design evolved, I have to go and rewrite parts of the code that place the created objects and calculate their positions in the world. Is there a more maintainable way of handling the positioning of fixed game objects?

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• Distinguishing between sets of status reports

  - by user1769486

  I am working on an internal database monitoring system and am at a point where I sort of hit the wall in terms of application design. Basically I have an extensible plugin architecture where I shall have an OK, a warning or an error upon running a db verification. My first question whether it is sufficient to have only one status reported with an optional status message or provide the ability to have more than one returned (with attached messages) and then calculate an aggregated overall status. In particular in the latter case my second issue would be how to distinguish between two verification reports with the same status code (as it can come from different triggers). I would need to do this to see whether some change happened between the current and last verification. I could simply have string comparisons of the attached status messages mentioned above but that does not seem very reliable.

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• Color based collision detection

  - by user1486826

  I am making a game where you fly a ship around some randomly generated planets. Since I am using a for loop to draw over 5000 planets, using the rectangle class or an oval-type class for this is not an option, since creating many objects will severely affect performance. Bitmasking each planet will likely result in performance issues too, so the only candidate is color based collision detection, because I don't need to apply some sort of object to everything I want to check for collisions. Is any way to check the perimeter around the ship for a certain color?

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• adjust the brightness in 13.04

  - by dinesh2707

  I have a dual graphics card: intel 4000 and nvidia 630m... I installed bumblebee and intel drivers from their website. I thought the brightness problem will be solved by installing these drivers. But, brightness works only for two steps: that is, dim, medium, high... But, it doesn't increase step wise. Can you please help me sort this problem? I'm a newbie to ubuntu and this is my first trial. So, please give me a detailed guide... Thank you :) EDIT: My model is HP DV6 7040tx. My Laptop Model

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• Designing a hierarchical structure with lots of reads and writes?

  - by JD01

  I am in the process of working on a video on demand system part of it involves the management of a hierarchical tree structure (think windows explorer) which allows users to upload videos, move folders around, create new folders etc. User action will be allowed depending on which permissions they have. In addition to managing the structure (creating folders and uploading videos), subscribers will be viewing content (read access). The number of reads will be significantly more than the writes. My question (and it is big one) is should I store the data in a database (for the writes) and also have some sort of cache which will be used for the reads? or do I use two databases? or is there a better solution? Also I will have to resolve concurrency issues which I think optimistic locking on the database will resolve. I have a fair bit about CQRS over the last few months but not sure if this is the way to go. Any ideas?

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• Ubuntu 12.04 VM goes dead unexpectedly

  - by pyInTheSky

  I'm not a super savvy super user, so I'm not sure what to look for. I have a vm running 12.04. It runs fine, and then just dies (no ping, no ssh). When I log into vmwaresphere, I see the vm still 'UP', but the console gives me a response-less black screen. This lead me to believe that Ubuntu was going into some sort of sleep/hibernate state. I double checked the power settings and found nothing out of the ordinary, so now I'm stuck on how to fix the problem. There are 5-7 (centos-5.8 & 6) machines running on the same server/vm setup with no problems at all. thanks.

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• Google se lance dans les solutions de géolocalisation en temps réel pour les entreprises, mais uniquement sur Android

  Google se lance dans les solutions de géolocalisation en temps réel Pour les entreprises, mais uniquement sur Android « Imaginez : vous êtes un opérateur pour un fournisseur d'électricité. Vous recevez un appel concernant une panne électrique et vous devez rapidement dépêcher sur place un de vos techniciens. Google Maps Coordinate peut vous aider ». Voici comment Google présente son nouveau service aux entreprises déclinés des Google Maps. Cette solution à la croisée de la géolocalisation en temps réel et des smartphones sort au moment où cabinet d'études IDC estime qu'il y aura plus de 1,3 milliard de travailleurs mobiles d'ici 2015 (soit 37,2% des employés au total).

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• Do games use threads?

  - by Nubcake

  I understand that the concept of how a game runs i.e while (game_loop = true) { //handle events // input/output/sound etc } But it has come to my attention while programming in another HLL is do some games use threads for certain operations? For example take any Pokemon game ; during interaction a textbox appears to display information. Now I've been trying to simulate that sort of textbox and the only way I could have got it to be exactly the same is by using a loop and yes once a loop is started there is no way to handle window events unless they are handled again inside the loop itself. I couldn't have used this loop inside a different thread other than the main one (due to a DirectX limitation) so the only option was to use it inside the main program thread. I was wondering if some games work like this ; do they only use the main program thread and handle events again if they're inside a loop? Edit: I forgot to mention this is about console games not PC games! Thanks Nubcake

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• What does the SEO market look like? [closed]

  - by TheEconomist

  I'm an economist (aspiring economist, if we are being technical) and my curiousity has been recently piqued by search engine optimization services. I had the following questions. 1) What industries most widely use search engine optimization services? 2) Is it small business or big firms that use SEO services typically? 3) What is SEO pricing typically dependent upon and how much is it on average? 4) Do SEO services really increase traffic? Is there a dataset I can get a hold of for this sort of thing? I am not looking for answers to the questions necessarily. Although answers would help, a nudge in the right direction is more than sufficient, and greatly appreciated. Thank you!

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• I know Python, but I don't know how the hell I'm supposed to make my program do stuff [on hold]

  - by Relentless Pursuit

  Look, I know how to operate sets, open files, create algorithms, optimize my code, use for loops, while loops, etc btu I don't know how to do anything USEFUL NO BOOK HAS TAUGHT ME HOW TO BE USEFUL. ALL MY PROGRAMS ARE NOTHING BUT LINES OF PYTHON / C++ CODE WITH NO GUI, NO FUNCTIONALITY . nothing :( Is their some sort of secret? How do I go from command line interface, to actual GUI applications that can do useful stuff, I've heard the term being thrown around alot 'api' does that api have anything to do with this? ~A frustrated programmer

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• Which C# Book to take?

  - by Fischkopf

  I was searching for a book to learn C#, but now i'm kinda stuck. I found many people asking the same question, and many people gave answers, but there are so many books about C# that it is really hard to decide which one to take. Now i reduced my choice on two books, but I just can't decide between them. Namely, there are: Programming C# 4.0 and C# 4.0 In A Nutshell The first thing I want to know, are these good choices? I'm not completely new to programming, but I just didn't find the right language until know, but i think C# is the one I was searching for. I know all the bassic stuff from Delphi/Java/Python so I think i'm not a complete beginner in programming. Is there anyone out there that read both books and can cleary explain whats the difference between them? I haven't found many reviews and sort of, so I just don't know which one to chose. Or is there any book that is better suiting me?

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• What is the most handy function you've ever came across? [closed]

  - by Viniyo Shouta

  Obviously everything is 'handy' when it comes to programming terms, but some get a highlight spot, like containers, matrix trasnformation functions and many others. But in this case please mention the one it was more handy to you, saved you from sparing hours resolving a problem, or even the one you like more, What is it and what does it does? I'll start with an example. Language: C++ Function: std::sort (STL) What does it does: Arranges the elements in a specified range into a nondescending order or according to an ordering criterion specified by a binary predicate. (It arranges a container in decreasing order) Why of this question? Because I want to learn how to if possible make my own implementations of these functions for pure studying purposes, to enhance knowledge

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• Le SDK Windows Phone 8 disponible, avec un nouveau Dev Center et une version du Framework .NET pour l'OS

  Le SDK Windows Phone 8 disponible avec un nouveau Dev Center et une version du Framework .NET pour l'OS Le très attendu kit de développement pour Windows Phone 8 a été dévoilé hier au grand public. C'est lors de la première journée de la conférence Build, la grande messe de Microsoft pour les développeurs qui se tient au campus de Redmond, que la firme a mise à la disposition des développeurs tous les outils dont ils ont besoin pour créer des applications Windows Phone 8. Le SDK Windows Phone 8 sort un jour après que Microsoft ait présenté le nouvel OS mobile qui apporte un lot important de nouvelles fonctionnalités (voir les articles en lire aussi). Il faut rappeler que la...

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• SQL Server Requery() sometimes hangs

  - by PSU

  I have an issue with Visual C++ and Microsoft SQL Server 2008R2. The following code will occasionally hang: Object->Update(); if(Object->CanRestart()) { //Why does this not return?? m_pDBRoRBaseObject->Requery(); } Object is derived from CRecordset. It looks to me as though a call to ::SQLExecute(m_hstmt) in the Requery() method is hanging, but I can't (with my current skill set anyway) figure out a way around this. Has anyone had a similar problem, or an insight of any sort?

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• Forbidding or controlling "Hidden IT..." Who should write and maintain ad-hoc software applications?

  - by matcauthon

  Bigger companies usually have the problem, that it is not possible to write all programs employees want (to save time and to optimize processes) due to a lack of staff and money. Then hidden programs will be created by some people having (at least some) coding experience (or by cheap students/interns...). Under some circumstances these applications will raise in importance and spread from one user to a whole department. Then there is the critical point: Who will maintain the application, add new features, ...? And this app is critical. It IS needed. But the intern has left the company. No one knows how it works. You only have a bunch of sources and some sort of documentation. Does it make sense to try and control or forbid application development done ad-hoc outside of the IT department (with the exception of minor stuff like Excel macros)?

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• Need to analyze C# code to find unreferenced classes

  - by Captain Comic

  Hi, I have legacy C# code and I am using Visual Studio 2008. I am looking for a tool, sort of code-analyzer that would say to me which class are not used and also some other useful information. If there is exact duplicate please specify. Thank you.

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