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• Book suggestions for GUI related topics [closed]

  - by asrijaal

  In the past, I've developed more on the server side, so no big GUI/graphic programming topics have crossed my way so far. I'm switching a little bit to the mobile plattforms (iOS, android) and would like to gather more info on the visual/graphic side. Using the SDK controls/widgets isn't that challenging and I would love to get deeper into the view/presentation layer. Animations, drawing itself, probably OpenGL. Any books that would take me a little deeper in understanding how drawing actually works would be helpful.

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• Looking for advice on using dd to backup a dual boot laptop.

  - by AvatarOfChronos

  My questions boils down to this. If I do "dd if=/dev/sda of=usbdrive" can anybody confirm that this will get everything including mbr/partition information/all four partitions and create a drive that I can swap with the failing internal drive without losing anything? If this is done while the computer is running will it still copy everything? At this point I'm afraid to shutdown the computer for fear of it never starting again. Secondly, how tolerant is dd of failing drives? Has anybody used it to recover a half dead drive before that can share any potential pitfalls? Did it get the data ok or is this going to be a hope for the best kind of situation? And lastly, If the usbdrive is larger than the failing internal drive I'll still be able to expand the partitions later so I'm not losing space? this last part seems silly to ask but with my current streak of bad luck I'll end up overwriting some magic bit and forever turning a 640gb hdd into a 500gb hdd. Also if anybody has a better solution to create a complete clone that gets everything I'm all for hearing about it. PostScript: I had been making periodic backups however when whatever miasma that killed the laptop struck it also got the NAS :( Post PostScript: both devices were on a UPS system.

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• Function names - "standardized" prefixes

  - by dnsmkl

  Imagine you have such routines /*just do X. Fail if any precondition is not met*/ doX() /*take care of preconditions and then do X*/ takeCareOfPreconditionsCheckIfNeededAtAllAndThenDoX() A little bit more concrete example: /*create directory. Most probably fail with error if any precondition is not met (folder already exists, parent does not exists)*/ createDirectory(path_name) /*take care of preconditions (creates full path till folder if needed, checks if not exists yet) and then creates the directory*/ CheckIfNotExistsYet_CreateDirectory_andFullPathIfNeeded(path_name) How do you name such routines, so it would be clear what does what? I have come to some my own "convetion" like: naiveCreateDirectory, ForceDirectoryExists, ... But I imagine this is very standard situation. Maybe there already exists some norms/convetions for this?

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• Progressbar patterns (Eclipse)

  - by JesperE

  I've struggled quite a bit with Eclipse and progress-monitors to try to have good progressbars which report useful progress information to the user. Inevitably the code gets cluttered with lots of things like if (monitor.isCancelled()) return; ... lengthyMethodCall(monitor.newChild(10)); and all over the place I need to pass a IProgressMonitor as an argument to my methods. This is bad, for several reasons: The code gets cluttered with lots of code which is not relevant to what the function actually does. I need to manually guesstimate which parts of the code takes time, and which parts do not. It interacts badly with automated tests; where much of the information which goes into a progressbar instead should be logged for later inspection. Is there a way out of this? Are there tools which can help me out with one or more of these problems? Should I be looking at Aspect-Oriented Programming tools, or are there other alternatives?

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• Flowmotion Running on Ubuntu Server [migrated]

  - by Thomas Egan

  I am trying to configure Flowmotion to work on my Ubuntu Server. At present I use LAMP to serve pages from a Virtualbox installation. I will be moving this to a dedicated server but would like to enable true streaming of videos using this installation. I am only interested in open source streaming for a research project and although I have installed Flowmotion via apt-get I don't know how to start the service so that embedded videos located on the server will stream. Can anybody provide any information regarding this or online resources I may have missed? I have checked the documentation however if appears far too complex. Just clarify I'm running VirtualBox 4.2.1 on Mac OSX 10.6.8 and Ubuntu Server 12.06 64-bit

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• What is important when starting GUI programming, and pick from widget libraries [closed]

  - by jokester

  I have been a CLI programmer, and recently I found it will be a plus to learn GUI programming. In past, my experience and knowlegde was a bit messy. So you may imagine many detour were there in my way, that is true. And I want to avoid getting lost again if possible. When googling about existing GUI framework, I found it is hard to choose my start point from GTK, QT, and lot of less famous peers. What are important factors when you guys are facing that problem? Will it be a good idea to pick a small enough library and feel its fundamental ideas?

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• Java: compile and run hanging at command prompt

  - by dwwilson66

  I'm having an issue that I'm hoping someone can help with. I'm working on netbook running WinXP Pro SP3, 1.6GHz & 1GB of RAM. I've got a relatively simple java program that I'm able to successfully compile and run on other computers (both XP and Win7), so I suspect my code is working fine--I've verified that all computers are running the same version of Java (build 1.7.0_02-b13). For about the past week, I get maybe three or four compiles and runs at the command prompt (running CMD from within WinXp) before I hang with a blinking cursor after keying my command and pressing enter. If I shut down the command prompt window and restart it, I can compile and run the program just fine--again, pointing to an OS/environment issue rather than code. The only system change I've made in the past week is to uninstall a Lexmark printer that I ditched a year ago, and removing/reinstalling Java. Oh, and an automatic Windows update... :\ I've used this netbook successfully for programming classes for the past year and a half. Anyone familiar with this issue and know of some system tweaks to solve it? I suspect that memory may not be getting cleaned up when the java program quits...only when CMD closes, but don't know any tools to troubleshoot. Ideas?

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• New WebKit tests

  I have updated the WebKit comparison table with data from Safari 5, Chrome 5, and Android 2.1. Improvements throughout!The top five WebKit browsers according to these tests are now: Chrome 5 Safari 5 Safari 4 Samsung WebKit (on bada) Android 2.1Interesting findings: Chrome and Android now support localStorage (Safari already did). Chrome and Android now support geolocation. Safari does in theory, but it doesn’t give the actual coordinates, making the whole exercise a bit pointless. Chrome and Android...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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• After reinstalling ATI graphics drivers, my keyboard and mouse aren't working anymore

  - by Lifelike27

  On Ubuntu 11.04 I tried to install the open source drivers for my laptops ATI Mobility Radeon 5470M but I messed that up a bit and lost xserver. Now I've managed to solve that problem with this and by downloading the ATI proprietary drivers and install those manually. Now, when Ubuntu loads up I get to the login screen but I can't use my mouse or my keyboard (usb keyboard and mouse doesn't work either). If I use the recovery console, then login with that and then run 'startx'. I can login fine (though Unity doesn't show, the graphics seem to be working because it shows the fading animation of libnotify), but I can't type or move my mouse.

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• Java Error Using Loops [migrated]

  - by Shaun

  I am facing a error in Java using the method Loops. I am a basic user learning Java and I am following a book with teaches you the basics of Java. I have this problem when I use this code in my Java Program. It gives me an red line under my code. Here's my code: public class Game{ public static void main(String[] args){ for (int dex = 0; dex < 1000; dex++) { if (dex % 12 == 0) { System.out.println(“#: “ + dex); } } } } I have been following the tutorials correctly. I am a bit lost where I have gone or done wrong. I have my public static codes and such as you'd require in any Java programming. Here's are the error given): Cannot resolve method: 'Println(? , ?)' Expression expected ',' or ')' expected Unexpected Token ';' expected

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• First and Follow Sets for a Grammar

  - by Aimee Jones

  I'm studying for a Compiler Construction module I'm doing and I have a sample question as follows: Calculate the FIRST and FOLLOW sets for the following grammar.. S -> uBDz B -> Bv B -> w D -> EF E -> y E -> e F -> x F -> e I have tried to figure it out so far but I'm a bit unsure if I'm correct. Could someone verify if I'm doing it right, and if not, what am I missing? My answer is below: FIRST | FOLLOW S | {u} | {$} B | {w} | {y,x,v,z} D | {y,e,x} | {z} E | {y,e} | {x,z} F | {x,e} | {z}

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• Strategy for image sizes

  - by MotiveKyle

  I run a site that has a lot of writers that generate quite a few articles a day. I require them to provide two image sizes (one for the big headline image and one as the thumbnail). I've been wanting to change up the site layout a bit, but I am becoming limited by the image sizes for the posts. I have considered just cropping images, but they still need to look nice, and cropping doesn't always generate what I'd want. I'd prefer to just scale down by percentage (as I do with thumbnails). Should I just make the writers provide more images? How do other sites handle this?

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• Implementing Command Pattern in Web Application

  - by KingOfHypocrites

  I'm looking to implement the command pattern in a web application (asp.net c#)... Since the commands come in text format from the client, what is the best way to translate the string to a command object? Should I use reflection? Currently I just assume the command that comes in matches the file name of a user control. This is a bit of a hack. Rather than have a select case statement that says if string = "Dashboard" then call Dashboard.Execute(), is there a pattern for working with commands that originate as strings?

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• Programming C++ using Qt4

  - by DaGhostman Dimitrov

  Hey guys I am really new to the C++ programing I have a little knowledge in C and a bit more in C++, but I do not know them enough to call myself a programmer. I am working as a PHP Web Developer I like being a crafts man and creating things so that is the reason to combine the programming with web development. I think that I could really benefit from both of them and so... My question is: Is it a good Idea to learn C++ with Qt or not? Can you give me pros and cons of both? Note: I do not want to become a programmer and give up the web development I want to combine them both.

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• Mozilla Firefox 23 Will Block Mixed SSL Content

  - by Anirudha

  Originally posted on: http://geekswithblogs.net/anirugu/archive/2013/07/03/mozilla-firefox-23-will-block-mixed-ssl-content.aspxIf you have a site which is running on SSL and used content that make non-https request then you need to a bit worried. The default setting of Firefox 23 will block the content that called on non-https address and page is based on SSL. for example script using https://code.jquery.com/jquery-1.10.2.min.js will not work because code.jquery.com can not be reach on https. the cdn ajax.googleapis.com support SSL so you can try it. if you want to disable this settings you can modify it on about:config security.mixed_content.block_active_content change the value true to false and it will be disable (it’s just for example)

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• XNA Monogame GameState Management not deserilaizing

  - by Pectus Excavatum

  I am having some trouble serializing/deserializing in a little game I am doing to teach myself monogame. Basically, I am using the gamestatemnanagement resources common to monogame (screen manager etc). Then I am serializing my screen manager component and all associated screens in the OnDeactivated method: protected override void OnDeactivated(Object sender, EventArgs args) { foreach (GameplayScreen screen in mScreenManager.GetScreens()) { DataManager.SaveData(screen.Level.LevelData); } mScreenManager.SerializeState(); } The Save data bit is to do with something else. Then I then override OnActivated to de serialize protected override void OnActivated(Object sender, EventArgs args) { //System.Diagnostics.Debug.WriteLine("here activating"); mScreenManager.DeserializeState(); } However, when this runs it just loads a blank screen - it goes into the game initialize and the game draw method, but doesnt go down into the screens initialize or draw methods. I have no idea why this might be - any help would be greatly appreciated. I am not the only one who has encountered this - I found this post also - https://monogame.codeplex.com/discussions/391117

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• Ways to prevent client seeing my code

  - by James Eggers

  I've got a bit of a strange problem.. Basically, I'm building a fairly complex (un-compiled, interpreted) program in Python. I've been working on most of this code for other purposes for a few months, and therefore don't want my client to be able to simple copy and paste it and then try and sell it (it's worth a fair amount). The other problem is that I need the script to run on a server that my client is paying for. Is there any way I can secure a particular folder on the machine from root access, make it so only one particular can access the directory? The OS is Ubuntu.

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• What are good HTML 5 and PHP 5 books to get? [closed]

  - by lardtard

  I am looking for beginner books into PHP 5 (Maybe with a bit into MySQL?) and HTML 5. I started self-teaching myself PHP although it has become a problem as the tutorials online are either outdated or just crap. I also managed to start learning with very little HTML knowledge so I am looking to brush up on my HTML knowledge and get more into PHP. I also am unsure weather I should be looking into XHTML or HTML5, or both so an answer to that would be splendid. I just want to become more self-sufficient and less reliant on other for my programming needs. I've searched Google for books but I'm just not sure which one is the "best" for me and makes for good practice and habits which brings me here.

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• Shifting from XNA/C# to C++?

  - by Fat_Scout

  For a while now, I've been working with XNA for game design and development (although only for personal use ATM.) Overall, I'm a major fan of XNA itself, and it's overall "feel." However, due to the fact that: XNA seems to have a lack of support (no Metro support, no updates since 2010, etc.) I plan to try and get a job in the game development industry, and due to C++'s dominance, being more familiar with it would be very useful XNA only supports Windows (non-Metro) and Xbox 360, while I am interested in Mac and (to a lesser extent) Linux support. I've been trying to shift over to C++ as my main language. However, I do not want to focus on learning raw DirectX/C++ at this time, so I've been looking for a higher level C++ API (something about the same level as XNA, although something a bit more low-level would be fine) with a feel similar to XNA. So, for someone switching from C#/XNA to C++, what would my best choice(s) be for API's similar to XNA, although unmanaged and running on C++?

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• Need help with gimp 2.8 (cpu not used to full capacity) [closed]

  - by Birgir Freyr

  I know this isn't the right place to ask this question but maybe some one here can point me out to were I should place this question (or help me fix it :)). Since I updated Gimp to 2.8 (and let me start by saying how happy I am with the new gimp) I have notice that Gimp only uses 35% max of my CPU power. I have tried changing settings, assigning only one CPU to Gimp (both in gimp preference and in windblows task manager). No matter what settings I choose it only uses 35% of the cpu. If I assign just one Core to it then Gimp will use 100% of that core (which is about 35% of a three core processor I have. Any thoughts? I am using Windblows 7 64 bit, gimp 2.8.0, AMD a6-3500 cpu. I also use Ubuntu (am going to see if it works the same there). Any help would be great.

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• The final set of SQLBits videos has been uploaded

  - by simonsabin

  The final set of SQLbits videos has been uploaded to the site. You can either watch online or download them. Some highlights of sessions that have been uploaded are Lies, Damned Lies And Statistics. Making The Most Out of SQL Server Statistics attend this session to understand exactly how the optimiser decides on its plans SSIS Dataflow Performance tuning Need to eek out a bit more oomph from your dataflows. This session might be of some use. TSQL Techniques – Why and how to tune a routine an overview...(read more)

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• How can I install Eclipse 4 through Ubuntu Software Center (desktop 12.04 64bit)?

  - by quakkels

  How do I install Eclipse 4 through Ubuntu Software Center on my desktop 12.04 64 bit os? The reason I would like to install through Ubuntu Software Center is because it's easy to uninstall the software, and i want to manage all my installed programs through the Software Center. If I have to install through other means, will Eclipse show up in Ubuntu Software Center? Thanks for any help. Update: Clarification I did find Eclipse but it was version 3.7. I'm looking to install version 4.

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• Alternatives to sql like databases

  - by user613326

  Well i was wondering these days computers usually have 2GB or 4GB memory I like to use some secure client server model, and well an sql database is likely candidate. On the other hand i only have about 8000 records, who will not frequently be read or written in total they would consume less then 16 Megabyte. And it made me wonder what would be good secure options in a windows environment to store the data work with it multi-client single server model, without using SQL or mysql Would for well such a small amount of data maybe other ideas better ? Because i like to keep maintenance as simple as possible (no administrators would need to know sql maintenance, as they dont know databases in my target environment) Maybe storing in xml files or.. something else. Just wonder how others would go if ease of administration is the main goal. Oh and it should be secure to, the client server data must be a bit secure (maybe NTLM files shares https or...etc)

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• Changing read-write permissions on my external Seagate hard drive

  - by Anthony_JKenn

  I have an external hard drive (Seagate Free Agent) that I normally download files to. I have a dual boot Ubuntu 11.10 along with Windows 7-64 bit. I can read all of my files in my external HD perfectly, but when I attempt to do a download of a file to this drive, I get an "unable to write because of read only" disk error. When I attempt to change the permissions of the disk through the "Properties" bar, I still get an error that I don't have the proper permissions to change permissions. I have heard of "mounting" the disk, but I am afraid of mistakenly reformatting and destroying all the data that I have currently on that drive. How best should I safely change the permissions on that drive so that I can write and download files to the drive?? The drive is listed under /dev/sdc1.

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• Alternative method of viewing a database diagram in SQL Server to see what tables have gone missing?

  - by Triynko

  I have a database diagram for my database, but when I open it in SQL Server, I almost immediately get a message saying some permissions changed or tables in the diagram were dropped or renamed, and tables in the diagram vanish before I can even scroll over to see what or where they were. Basically, it's saying, "Hey, you know all that time you spent laying out tables in this diagram... half of them are going to vanish when you view it, and I'm not going to tell you which tables vanished or where they were in the diagram. You're just going to see a bunch of random empty spaces where tables used to be ;)" Ridiculous. So I thought that maybe if I look in the dbo.sysdiagrams table, I could look at some plain text definition of the diagram to get a clue about the names of the tables that went missing (because thier names were probably only changed slightly) or their coordinates in the diagram (because their spatial location would give me a clue as to what they were), so that I could re-add them, but I can't, because it's a binary definition. So, is there some other program I could use to view the existing database diagram that's not going to just drop and forget the missing tables without telling me what they were, or is this information lost and at the mercy of some SSMS-proprietary database diagram format and viewer which refuses to cooperate with me.

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