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• How to justify rewriting/revamping legacy software in a business case?

  - by sxthomson

  I work for a great little software company which makes good revenue from our main software package. The problem for me is that it's almost unmaintainable. It's written in Delphi 7 (has upgraded versions over time) and has been worked on by a lot of developers over the past 20 or so years. The software lacks any meaningful architecture - there's no object orientation whatsoever, horrible amounts of cyclical dependencies and an over-reliance on global variables to name just a few things. Another huge thing for me is Delphi 7 does NOT support 64-bit. The problem here for me is that my management team don't care about technical things, they want to know why they should care. Obviously that's expected, so what I'm asking here is for some guidance, or tales, or pitfalls about this kind of thing. There's a few things I would love to include, namely for me, the length of time taken to debug/write a feature in "legacy" code, versus coherent, well structured OO code. Does anyone know of any blog posts or the like where this is talked about? For us in the company this is a huge reason. Despite being decent developers we feel like writing a new feature is just piling more rubbish on top. On top of that, even for me who has a decent level of understanding of the code, changing things is infuriating - a small change can have a ridiculous domino effect. Anyone have any experiences they'd like to share?

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• No sound after upgrading to Ubuntu 11.10 from win7

  - by Tilman

  just as a prefix to my question, i'd like to note that i'm just now entering the world of Linux (unless you count my android, but that's a very different experience...) i have two computers now that run Ubuntu 11.10, the first of which i've had very little problems with, aside from figuring out the basics. the second, from which i'm writing this question, has (up to this point) only had one problem.... no sound. i've read a couple questions similiar and found little help as the component catalog doesn't have my computer listed. (in fact i'm not suprised this is a pos i had my mom grab from her work before they officially closed the doors behind them) had perfect sound before hand, and no sound now. sudo lspci -v brings up 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) Subsystem: Intel Corporation Device d608 Flags: bus master, fast devsel, latency 0, IRQ 45 Memory at ff980000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel any help would be greatly appreciated, me and my gf just wanna watch a damn movie lol

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• Symfony sfControlPanel 500 error only when executing 'tasks'

  - by rrlange

  As a bit of background, I recently had to restore a Symfony site from backup. Ever since the 'successful' restore, I am running into an exception when trying to execute a(ny) task via the web-based sfControlPanel: Unable to find PHP executable stack trace * at sfToolkit::getPhpCli() in SF_ROOT_DIR/plugins/sfControlPanelPlugin/modules/sfControlPanel/actions/actions.class.php line 93 FYI: symfony version 1.0.6 PHP 5.2.6 (cli) (built: May 2 2008 16:06:40) Apache/2.2.3 CentOS 5.* Thank you very much for any and all suggestions as to what might be amiss. Addendum: I neglected to mention that I can the frontend app (and certain backend apps) perfectly fine via the web. I am also able to run common tasks via the command line (cc etc.).

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• Homebrew build with different arch?

  - by StasM

  I tried to install mysql-connector-c recipe via homebrew, and it builds just fine, but produces x86_64 library: $file ~/brew/lib/libmysql.dylib .../brew/lib/libmysql.dylib: Mach-O 64-bit dynamically linked shared library x86_64 I however need i386 library for my project. I tried to give it CFLAGS and LDFLAGS like this: CFLAGS="-arch i386 -arch x86_64" LDFLAGS="-arch i386 -arch x86_64" brew install mysql-connector-c but nothing changes - it still builds x86_64 only binary. Is there any way to make homebrew build either dual arch library or i386 library? I have kernel architecture set to x86_64, if it matters.

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• Debugger for file I/O development?

  - by datenwolf

  Okay, the question title may be a bit cryptic. But it aptly describes what I'm looking for: I think every experienced coder went through this numerous times: You get a binary file format specification, you implement the reader for it, and… nothing works like expected. So you run your code in the debugger, go execute through the code line by line, every header field is read in seemingly correct, but when it comes to the bulk data, offset and indices no longer match up. What would really help in this situation was a binary file viewer, that shows you the progress of your file pointer, as you step through the code, and ideally would also highlight all memory maps. Then you could see the context of the current I/O operations, most notably those darn "off-by-one" mistakes, which are even more annoying when reading a file. Implementing such a debugger should not be too hard. traces on the process' file descriptors/handles and triggers on the I/O functions, to update the display. Only: I don't know of such a kind of debugger to exist. Do I just lack knowledge about the existance of such a tool, or is there really no such thing?

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• Why is my ftp connection timing out?

  - by NEPatriot

  This is the log info: Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" is your current location Command: TYPE I Response: 200 TYPE is now 8-bit binary Command: PASV Response: 227 Entering Passive Mode (173,201,145,1,199,43) Command: MLSD Error: Connection timed out Error: Failed to retrieve directory listing The strange thing is that I've set the transfer mode to active... I've called my hosting company support and they're able to connect to this server using my ftp credentials. I've also tried to connect on another machine on my network and have the same issue. Could it be the firewall? My ISP?

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• Detect and delete spam email with Mac/Mail software

  - by prosseek

  I keep receiving the following email. It changes the sender, and contents a little bit all the time, so my spam filter doesn't filter it out. Is there any way to find this pattern to filter it out? My=Friend-Is=Looking-ForYou~On=TheWeb?~She~Likes~Your~Photos .,. http://2su.de/S0w --------------- the ought, inhumanity go sulphuret. No therefore. At do partner, shape! That easy-chair sympathetic.

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• estimating size of reply HTTP headers

  - by Guanidene

  I am trying to download a file via a basic socket connection, using a HTTP GET request. So, I have to specify how many bytes of data coming in I have to read from the socket. However, I am having trouble deciding the amount of data (say, in bytes) the server would reply back with. I know that there is a "Content-Length" field in the reply sent by server, but that gives me the size of the actual data (without the http headers). Is there a way to get the exact size of HTTP headers sent by the server or an estimation is required? (I am doing this for downloading on a mobile network, where every bit of data matters in terms of time and money, so I don't wish to make an unnecessary larger estimate of the header size.)

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• Software development company business plan

  - by Navi

  I apologize in advance if this is the wrong forum for this question, so please forward me to the right place. I have about 10 years professional experience as software developer. Mostly on the Java platform doing server side programs. I have picked up a bit of Linux skills on the way as well. I know HTML and Javascript, so I can make a website that would not be too ugly, but I am not going to win any prizes with it. In fact I think I am pretty terrible in the user interface department. My initial plan is to do Android development. I read a few Android books and tried making a few apps. Since it is Java based I think I got the technical side down. Lately I have been thinking about iphone and Mac development, because of the relevant app store/development programs. The trouble is I don't know Objective C. As a side question, how long would it take me to become proficient in Objective C? Considering that I am working on my own and could hire somebody to help me for a short time for low wages if necessary what are my options? What are the pro and cons of the development programs app stores of Android and Apple? Which development/app stores are out there beside the ones I mentioned? Do you think it is necessary to find funds to get me started or should I just use my savings? If you have positive/negative experiences in a similar situations can you please share them? Thanks for your help.

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• Skype 4.2 crashes when connecting to one specific person

  - by Aaron

  ok i have Skype 4.2 on Windows Vista 32 bit. Skype was working fine with no problems at all but a situation came up and i had to reformat my laptop. Since the reformat skype doesnt connect to just one person on my contacts list. Ive uninstalled reinstalled multiple times, even removed him from my contacts and readded but to no avail. He is on Skype mobile with his phone not sure if this is a prob as it wasnt before. any help or advice here would be much appreciated.

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• FOSS Development: Who develops the OS-specific packages?

  - by achristi

  I have a couple of FOSS projects. They can be a bit of a pain to get running unless you've got dependencies in place already, which I figure is par for the course for FOSS projects. We know that each free operating system out there has its own package management systems. A few of them, such as homebrew on Mac OS or AUR on Arch linux are very friendly to community contributions. What I am wondering is, who exactly is expected to contribute packages? Primarily I am concerned with the case of small or developing projects, since it's pretty standard for the big projects to be put in there by the OS maintainers. From my perspective, it is something of a chicken-egg problem, because your software will not make its way into a package system if it does not have users, and it is less likely to gain users if it is not easy to install and use. For the sake of discussion, let's assume that the software in question is actually legitimately useful. I can see where people could create crapware or spam and that should obviously be kept out of any package system. So, in summary, whose job is this? Is it spammy for a FOSS software dev to put his own work into various OS package repositories?

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• How can I anonymize my browser useragent, yet still be counted as a FF/Ubuntu user?

  - by Rory

  I read about EFF's Panopticlick project to see how unique your webbrowser's headers are. I would like to anonymize that a bit. My current User Agent is Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7) Gecko/20100106 Ubuntu/9.10 (karmic) Firefox/3.5.7 I would like to make that more anonymous, however I still wanted to be counted as a Firefox and Ubuntu user. How can I change my User Agent in Firefox? What should I change it to so that it's less unique, but will be counted as a Firefox user and a Ubuntu user on web analytics software? I know that there is no guarantee that I will be counted a Firefox/Ubuntu user, just something that 'works most of the time' would be sufficent.

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• How to shutdown Windows 8 PC without using mouse?

  - by Gopinath

  Windows 8 sports a re-imagined desktop and tablet user interface with touch friendly Metro looks. One of the major changes in Windows 8 for a common users  is the lack of start menu, with which we got friended for more than a decade. On Windows 8 we would be missing it. As there is no start menu in Windows 8, the way you shutdown a Windows 8 computer is a bit different. To shutdown using Mouse, you need to hover on the top right edge of the screen to open the hidden menu,  go to "Settings"  tab -> "Power" -> Then choose for "Shut down", "Sleep" or "Restart".  That’s a lot of Mouse movement work and if you are a power user then you may not like to do that. How about shutting down the PC using Keyboard? Here are the two ways to shutdown the PC using keyboard Keyboard shortcuts With the help of keyboard shortcuts you can navigate to Power options of Windows 8. Press Win + C to bring the Settings Charm and use Arrows and Enter keys to navigate to access Shutdown menu. This is one of the easiest way to shutdown the PC without using Mouse. Run Command If you don’t like to go through the Setting menu, you can use the traditional Run commands. Press Win + R to open Run dialog and enter the command shutdown -s -t 0 to immediately shutdown the PC.

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• page up/down print ~ instead of history search in terminal

  - by Desmond

  I am on a Macbook Pro with mac os x 10.8.2 I have set: page up: \033[5~ page down: \033[6~ in terminal keyboard settings (pressing esc to get \033). My ~/.xinputrc is: # Be 8 bit clean. set input-meta on set output-meta on set convert-meta off # Auto completion options set show-all-if-ambiguous on set completion-ignore-case on # Keybindings "\e[1~": beginning-of-line # Home key "\e[4~": end-of-line # End key "\e[5~": history-search-backward # Page Up "\e[6~": history-search-forward # Page Down "\e[3~": delete-char # Delete key "\e[5C": forward-word # Ctrl+right "\e[5D": backward-word # Ctrl+left I am just following a guide found on internet (actually there are a lot of guide really similar): http://macimproved.wordpress.com/2010/01/04/fix-page-updown-home-end-in-terminal/ Unfortunately, the only (terrific) result is that when I press page up (fn + up arrow) just a "~" is printed in the terminal.

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• Sound card doesn't work and yet does.

  - by Xeoncross

  I have a really weird one tonight. Today we had a LAN party and all of a sudden the sound on a couple PC's stopped working for programs like the games, windows media player, etc. However, when errors would popup (like trying to change the volume settings) you would here the default error chime. Restarting the computers you would here the logoff-login sounds and after a restart the sound would work for a bit in both games and apps and then suddenly stop. Restarting also didn't always fix the problem. I can't figure this out. If the sound card/driver didn't work then how could we hear sounds from the windows sound scheme? No sound with VLC, windows media player, youtube, games, nothing. The only thing I can figure out is that this is a bad game crashing the primary driver or some kind of weird virus these PC's might have picked up.

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• Read ahead buffering while playing video file from optical disc

  - by Saxtus

  I was wondering if there is a program for Windows 7 (64-bit), that reads ahead the file to be played back (usually MKV files in my case) to the RAM, so the disc that the video file resides in, won't spin for the entire duration of the playback, but only every time the cache is almost empty (with big enough cache so it won't need the drive for long periods). A program that I've used in the past (called DVDIdle), was doing that universally for every video player I wanted, but they've stopped updating it 6 years ago and now it doesn't seem to work with Windows 7 (tried using compatibility mode too). The method I am using now, is to either have the drive wearing down and buzzing all the time or manually copy the entire file to HDD, SSD or RamDisk and play it from there. The closest thing I've found, is a software that slows down the drive's spin speed, but I was looking for something more convenient, automated, without waiting for an entire file to be copied before starting playback or needing any HDD space, like I've used to in the past. Thanks in advance.

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• Circumventing a manual HTML login page for "unclassified" websites

  - by auramo

  The IT department just made my life a little bit harder again: they introduced a manual HTML login page for all websites they have not "classified". This means that all the applications which try to access unclassified websites for e.g. downloading plugins do not work. Examples: Eclipse plugin installation, Maven builds etc. What would be the easiest workaround for this? The best I've come up with is try to extend/customize Ruby's httpproxy.rb that comes with Webrick. I would automate the manual login process whenever that login response page is detected. This sounds quite painful, and I think there might/should be simpler options?

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• World Location issues with camera and particle

  - by Joe Weeks

  I have a bit of a strange question, I am adapting the existing code base including the tile engine as per the book: XNA 4.0 Game Development by example by Kurt Jaegers, particularly the aspect that I am working on is the part about the 2D platformer in the last couple of chapters. I am creating a platformer which has a scrolling screen (similar to an old school screen chase), I originally did not have any problems with this aspect as it is simply a case of updating the camera position on the X axis with game time, however I have since added a particle system to allow the players to fire weapons. This particle shot is updated via the world position, I have translated everything correctly in terms of the world position when the collisions are checked. The crux of the problem is that the collisions only work once the screen is static, whilst the camera is moving to follow the player, the collisions are offset and are hitting blocks that are no longer there. My collision for particles is as follows (There are two vertical and horizontal): protected override Vector2 horizontalCollisionTest(Vector2 moveAmount) { if (moveAmount.X == 0) return moveAmount; Rectangle afterMoveRect = CollisionRectangle; afterMoveRect.Offset((int)moveAmount.X, 0); Vector2 corner1, corner2; // new particle world alignment code. afterMoveRect = Camera.ScreenToWorld(afterMoveRect); // end. if (moveAmount.X < 0) { corner1 = new Vector2(afterMoveRect.Left, afterMoveRect.Top + 1); corner2 = new Vector2(afterMoveRect.Left, afterMoveRect.Bottom - 1); } else { corner1 = new Vector2(afterMoveRect.Right, afterMoveRect.Top + 1); corner2 = new Vector2(afterMoveRect.Right, afterMoveRect.Bottom - 1); } Vector2 mapCell1 = TileMap.GetCellByPixel(corner1); Vector2 mapCell2 = TileMap.GetCellByPixel(corner2); if (!TileMap.CellIsPassable(mapCell1) || !TileMap.CellIsPassable(mapCell2)) { moveAmount.X = 0; velocity.X = 0; } return moveAmount; } And the camera is pretty much the same as the one in the book... with this added (as an early test). public static void Update(GameTime gameTime) { position.X += 1; }

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• Unusable Source for Ubuntu image on Xen 3

  - by Roberto Aloi

  Hi all, I'm trying to create a new VM in Xen 3, running Ubuntu 10.4 (32 bit) as the guest OS. Xen 3 is installed on a machine running OpenSuse 11.2. I downloaded the Ubuntu image from the ubuntu.com website and I mounted it on /dev/loop0. When I try to create the new VM in Xen with the given source, Xen complains the "source is unusable". I've also checked the md5 sum for the image. It's fine. Any suggestion or hint that could help me?

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• Extremely slow startup of tomcat

  - by Henrik

  I have a tomcat 7 installation on a Solaris 10 server. My problem is that starting the server (or deploying a new war) is extremely slow. It usually take 30 - 60 minutes. The war application is a medium sized grails application so there are quite a a lot of files. The server is running other server applications as well but from my basic skills I don't see this as a problem. Can anyone give me some tips on how to analyse this? Settings in Tomcat, java, server, disc access or something else? I use these parameters to tomcat: CATALINA_OPTS="-Dcom.sun.management.jmxremote=true -Djava.awt.headless=true -Dfile.encoding=UTF-8 -server -Xms1536m -Xmx1536m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:PermSize=512m -XX:MaxPermSize=512m -XX:+DisableExplicitGC" And I use a 32 bit java 1.6.

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• Start a new project. Where is the inspiration ?

  - by Kakawait

  The question may seem strange at first glance ... And I may be alone in this situation. But currently I want to improve my skill through learning new framework. however, do a simple "HelloWorld" application does not satisfy me. I think a practical project is required to apprehend the basics of a framework. I know there is many scholar-like project like design a library manager or CMS. But I have recently planned to learn ~3 differents frameworks and I can't find any motivations through "unexciting" project. In the end I have not started any framework ... I'm aware of I do not develop the project of the year ... I'm just looking for something a bit exciting. I do not expect any project subject, anyway stimulation provided by a project is something subjective. But I want to know your inspiration ! (or method to learn framework ^^) I'm talking about web-dev framework but I'm open to any kind information ! Kind regards.

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• How can browsers in VMs resolve hostnames of websites on parent PC?

  - by elliot100

  I have a number of local websites in development on my Windows PC, set up as virtual hosts within Apache, with hostnames (along the lines of dev.example.com) resolved via the hosts file, so I can test them out them with various browsers. I now want to extend browser testing to running browsers in various OSs in virtual machines, and want to be able to resolve dev.example.com from the VMs. Currently these are a mix of VMWare Server and VirtualPC. I know I can edit the hosts file on any Windows VMs, but this is a bit fiddly and I'd like a solution which is independent of the individual VMs. I think what I need is a nameserver, but what's the simplest way of going about this? I'd like everything to be self-contained on the one machine. I think I can cover firewall and Apache permissioning issues.

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• Will Windows Barf on Constant Video Driver Overwrite?

  - by Maarx

  So, I've got a Win7 64-bit gaming PC with GTX 260's. Recently, StarCraft 2 had an issue with flickering, which NVidia fixed with a new set of drivers. However, these new drivers induce unplayable graphical errors with Neverwinter Nights 2, something me and my friends still play from time to time. I am seeking advice on the "best" way to rectify this situation, to be able to switch between two driver releases, without compromising the stability of my system (if Windows stability isn't an oxymoron). I'm wondering if Windows 7 is structured in such a way that I can constantly reinstall these two sets of drivers back and forth overtop each other, possibly six or eight times a day, without very quickly driving myself to reformat to maintain that "just like new" performance. I'm loathe to have to reformat the drive and maintain two copies of the operating system, but I'll do it if I have to.

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• Add "secure" in cookie by httpd server

  - by Abhishek

  How do I have to configure my httpd server to add "Secure" in the cookies? I tried the one in the below link, http://blog.modsecurity.org/2008/12/fixing-both-missing-httponly-and-secure-cookie-flags.html but this did not seem to be working. I inspected the cookie via firebug and found that the cookies have "HttpOnly" but not "Secure". I double checked the configurations and they the same as mentioned in the link. I also noticed that the server response time goes bit high when doing it by mod_security. Is there a better way to do it? Any ideas or pointers to configurations would be helpful

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• Clipboard replacements (Ditto, ClipX) stopped working in Windows 7

  - by Bassam

  Over the past few days, I've noticed that the clipboard replacement application I use (Ditto) isn't working any more. Specifically, it isn't copying items to its list. It still shows the history of items copies before, but doesn't add any new items. I am still able to paste past items, so the program is still functional. It will work for a while after quitting and restarting the program, but then it will soon stop getting new items again. I've tried using ClipX, another clipboard replacement app, and that doesn't get new items either. This leads me to think this is a Windows problem. I'm on Windows 7, 64-bit. Is anyone else having this problem? Any ideas on what might be causing it? Update: I've found that if I Disconnect from the clipboard, then Connect to clipboard again, then it works for a while, but stops collecting items again after 15 mins.

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