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• What sort of security method is this called (if it has a name)?

  - by loosebruce

  I have thought of a way of securing access to an application interacting with another application. Using this method Application 1 - "What is the sum of 1+1?" Application 2 - "3" Application 1 - "Access granted" Is this method used a lot, does it have a classification in the programming world? The advantages for me of using this is that I do not have to spend more effort implementing security keys/certificates. Any unauthorized machine trying to interpret it would give the correct result and identify itself as untrusted. What sort of weaknesses are there to doing this?

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• Using Domain name in EULA of a software rather than my name in the Licensor field

  - by user17330

  I intend to sell a software solution.I have already registered a domain but i dont have a registered company.Can i use my website/domain name eg:myproduct.com for the licensor field in the EULA rather than using myname.I will renew my domain yearly is there a problem with this.Do you know any software companies that work like this.Im confused about the users point of view will they find it a bit different. Please help me out.

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• Is `break` and `continue` bad programming practice?

  - by Mikhail

  My boss keeps mentioning nonchalantly that bad programmers use break and continue in loops. I use them all the time because they make sense; let me show you the inspiration: function verify(object) { if (object->value < 0) return false; if (object->value > object->max_value) return false; if (object->name == "") return false; ... } The point here is that first the function checks that the conditions are correct, then executes the actual functionality. IMO same applies with loops: while (primary_condition) { if (loop_count > 1000) break; if (time_exect > 3600) break; if (this->data == "undefined") continue; if (this->skip == true) continue; ... } I think this makes it easier to read & debug; but I also don't see a downside. Please comment.

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• SQL Rally Relational Database Design Pre-Con Preview

  - by drsql

  On May 9, 2012, I will be presenting a pre-con session at the SQL Rally in Dallas, TX on relational database design. The fact is, database design is a topic that demands more than a simple one hour session to really do it right. So in my Relational Database Design Workshop, we will have seven times the amount of time in the typical session, giving us time to cover our topics in a bit more detail, look at a lot more designs/code, and even get some time to do some design as a group. Our topics will...(read more)

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• How can I inform search engines that the usefulness of some content on my site has a limited shelf life?

  - by Tim Post

  Let's say that I run a forum dedicated to computer hardware. Naturally, people are going to ask questions like: What is the best laptop for running [os] Or What is the best video card for under [amount] These may be perfectly fine discussions, but the content loses usefulness over time. An answer to either question asked in 2007 might still be relevant in 2008, but definitely not in 2012. Is there a way that I can tell search engines that certain pages might not give visitors what they're looking for after a certain date, and perhaps hint to a page on my site that would provide good information? Perhaps something I could set in HTTP response headers, meta tags or even a site map?

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• Java web UI framework like ASP.NET MVC?

  - by Ethel Evans

  I'm doing some web apps for personal projects that might be shared out with my friends. I'm trying to use skills that will help me at work, but don't have $$ to spend on Visual Studio right now and don't want to try to cobble something together with Express Editions. Since I've been sort of wanting to bring my Java skills up to date and the main skills I want to work on are design and architecture skills, this isn't a big deal - except that I have no idea how to track down the right UI framework. I know I want something based on MVC, to get more practice with frameworks for that design pattern (we're using ASP .NET MVC2 at work). The UIs that I'll be making will be pretty simple - data entry, buttons, text, images. They will need AJAX. Any thoughts about which frameworks to look at? I'll be watching the comments, if anyone wants additional clarification on what I'm looking for.

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• How do you achieve a numeric versioning scheme with Git?

  - by Erlend

  My organization is considering moving from SVN to Git. One argument against moving is as follows: How do we do versioning? We have an SDK distribution based on the NetBeans Platform. As the svn revisions are simple numbers we can use them to extend the version numbers of our plugins and SDK builds. How do we handle this when we move to Git? Possible solutions: Using the build number from hudson (Problem: you have to check hudson to correlate that to an actual git version) Manually upping the version for nightly and stable (Problem: Learning curve, human error) If someone else has encountered a similar problem and solved it, we'd love to hear how.

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• The Team Behind SQL Saturday 60 In Cleveland

  - by AllenMWhite

  Last July I asked the assembled group at the Ohio North SQL Server Users Group meeting if they'd be interested in putting on a SQL Saturday. Enthusiastically, they said yes! A great group of people came together and met, first monthly, then every other week, and finally every week, taking time from their families to do the things necessary to put together a SQL Saturday event here in Cleveland. Their work has been amazing and any of you attending our event will see what a great job they've all done....(read more)

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• When should I increment version number?

  - by ahmed

  I didn't learn programming at school and I do not work as a (professional) developer, hence a lot of basics are not quite clear to me. This question tries to clarify one of them. Now let's suppose that I have issues #1, #2 and #3 in my Issues Tracker that are set to be corrected/enhanced for version 1.0.0 and that the last (stable) version is 0.9.0. When should I increment to version 1.0.0 ? When a) just one of the listed above issues is closed or b) when all the issues related to version 1.0 are closed ? Which one is the right way to do it ? And by the right way, I mean what is currently used in the industry. Thanks.

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• Sound works but cannot change settings or volume

  - by W. Conrad Walden

  Volume is always on max. The volume indicator is showing three dashes and does not show anything when I click on it. Clicking the "sound" button in settings causes it to recursively reopen settings. pulseaudio --start doesn't help. EDIT: This has only started happening after the upgrade to 13.10 EDIT 2: This is in Unity, yes. EDIT 3: killall unity-panel-service works and does reload the panels, but previous problems persist.

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• Are Remote commit hooks in subversion possible?

  - by John Hamelink

  Hi there, my current setup is as follows: We have a Linux samba share that contains all the repository folders (with the hooks folder inside, amongst the others) All the developers have the share mapped as a network drive, and import to a local directory (normally C:\Server\RepositoryName) where they work on their files. All the machines accessing the drive (unfortunately) run windows. What I'm aiming to do is to have a hook on the Linux server that detects when a commit has been made, by which project, the revision number, the name of the developer who committed, etc. I looked into the hooks files, but they seem to be ran by the client. Is there a way to monitor svn changes and collect the relevant information from the Linux server?

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• Time tracking and payment registration architecture

  - by egis

  ?itle might be a little bit incorrect. :) Anyway, I'm building a software where employees input time they worked per day (work hours) and employer "pays" for this time. "Payment" is done outside this system, so employer just "confirms" (checkbox or something like this) which work hours are paid. So the question is - what is the best way (both UI and data storage wise) to implement this? At the moment I have this idea: Employee selects week and manually (with some Javascript helpers, like "fill the same time for all days") inputs work hours in every day of the week. Employer confirms payment the same way employee inputs data (selects week, confirms each day). Data is saved in DB as unix timestamp (one day per table row). Problem is 14 inputs (7 days * ("hours from" + "hours to" input), yet this approach seems kinda easy to implement. Maybe I'm overlooking something and this can be done differently and better? Maybe someone has any example of already working software?

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• Dependency injection and IOC containers in a closed project

  - by Puckl

  Does it make sense to assemble my project with dependency injection containers if I am the only one who will use the code of that project? The question came up when I read this IOC Article http://martinfowler.com/articles/injection.html The justification for using dependency injection in this article is that friends can reuse a class, and replace depending classes with their own classes because they get injected and not instantiated in the class. I would only use it to inject objects where they are needed instead of passing them through layers to their target. (Which is not so bad I learned here: Is it bad practice to pass instances through several layers?) (Maybe I will reuse parts of the project, who knows, but I don´t know if that is a good justification)

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• Keeping up with upstream changes while adding small fixes or even major changes

  - by neo

  Often I need to apply some small fixes (to make them run on my environment) or even change some parts of the software (to tailor it to my needs) to software from outside. However this obviously creates problem with updating said software, even when it changes nothing related to my fix. It would be easier when the software provided integration for some kind of plugins but more often than not it doesn't. What would be an ideal workflow regarding that? Most of the projects are git repos I pulled from outside. How should I apply my changes so that I can update painlessly? You can assume that external changes are much more often and larger than my own ones, so reviewing each one of them won't be a solution.

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• How can I add the version of a file to the file name with Tortoise-SVN?

  - by Eric Belair

  I would like to start giving unique names to "cache-able" files - i.e. *.css and *.js - in order to prevent caching, without requiring changes to the web-server settings (as is currently done in IIS). For instance, let's I have a JavaScript file called global.js. Going forward I would like it to have the name global.123.js when revision 123 is checked in. This would also require the following: The previous version of the file - perhaps it was global.115.js - is removed when the file is deployed. All references to the file are updated with the new file name How do I go about doing this? What concerns do I need to consider?

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• Getting started with Team Foundation Server

  - by joe

  At work, we recently started using Team Foundation Server to manage our source code, i have no idea how to use this system. I do not know even know how to check source code in and out. Does anyone know of a step-by-step tutorial on how to work with TFS? Just for basic operations e.g. get latest version, upload your changes, etc. I am accessing it from Visual Studio 2010. I also have access to the TFS web interface.

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• How to cull liquids

  - by Cyral

  I use culling on my Tiles in my 2D Tile Based Platformer, so only ones needed are drawn on screen. Thats easy to do. However, My Liquid tiles (Water, lava, etc) require an Update Method aswell as the normal Draw, which does checks against tiles, makes it flow, etc. So how should I cull liquid updates in my game? Not culling is to slow, culling only on screen looks awkward when you move. What do you think would be best for the player? Maybe someway of culling the visible tiles PLUS also adding the width/height of the viewport to start culling tiles at a fast enough rate in front of the player so it dosent look awkward when moving? (Not sure how to do this though, something with MaxSpeed of player and width of screen)

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• Moving My Blog

  - by Hirt

  Oracle has, unfortunately, moved to a new blogging platform. For security reasons, it is no longer possible to use external tools, such as Windows Live Writer. Since this makes it too time consuming for me to blog, I've decided to only use my private blog, even for work related blog entries. This is where you can find my blog entries, from now on:http://hirt.se/blog/ Note that it is hosted on the poor server in my garage, hooked up to an ADSL-modem. It will probably be dog slow. Sorry for that.

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• LIRC-ZILOG on ubuntu 12.04

  - by aoman

  I followed these guides to configure a Hauppauge PVR, and after compiling the hpvr modules, I have this problem: (that also includes the zilog one) # locate zilog /lib/modules/3.2.0-29-generic/kernel/drivers/staging/media/lirc/lirc_zilog.ko /lib/modules/3.2.0-34-generic/kernel/drivers/staging/media/lirc/lirc_zilog.ko /usr/src/linux-headers-3.2.0-29-generic/include/config/lirc/zilog.h sudo modprobe lirc_zilog FATAL: Error inserting lirc_zilog (/lib/modules/3.2.0-34-generic/kernel/drivers/staging/media/lirc/lirc_zilog.ko): Invalid argument The PVR works and I can get a test video with sound. The remote does not. I want the transmitter to work so it can automatically change the channel on the cable box and find the video I wanted to record. The LIRC sources are not on Ubuntu sources and so I can only guess at what commands I might have to use. How do I resolve the error and get the remote working?

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• Confusion about git; how to undo?

  - by dan

  I wanted to install some source code that was on git. Don't really know what that means, I've never used git before, but I figured it was time to learn so, I first installed git. Next I tried to clone the git directory of the software I want to install. I got a message saying "the authenticity of can't be established". I went ahead and ended up with another message saying warning such and such will be added to known hosts. I went ahead and it said something about hanging up on the connection. After searching the internet for a while I realized I didn't need git to install the software but now I have it installed and have added some host to some file or another. I'm concerned I've created some security issues I need to fix. Can anyone help me undo what I've done, or better understand what I've done. Did adding a git project open up my system? Beyond that can anyone tell me how git works. Everything I've found assumes I know stuff that I don't yet. Thanks

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• Keeping files that are often changed in sync between desktop and laptop

  - by N.N.

  I'm looking for a way to keep a desktop and a laptop in sync. What I want to keep in sync are some folders, mainly ~/Documents, that are changed often when working on them. If it matters I can connect to my desktop from anywhere via an URL but my laptop is harder to access since it might be behind NAT and such. I have been looking at Ubuntu One but it seems to not go well with working on documents written in LaTeX. If I work on a .tex file in the Ubuntu One directory and compile it (with pdflatex) every now and then (as often as every 10 sec when working) it will create several new files including a pdf which are uploaded to Ubuntu One and this seems stupid since it will create continuous upload when working on .tex files. I also usually keep .tex documents version controlled by git and then every commit (which also can happen frequently) will cause upload (by changes in ./.git) so that it happens continuously when working. Another example is editing images that are saved often. What I think would be best is for sync to happen every tenth minute or at the end of every working session (but there might be some other way to handle this?).

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• How to convert a Bazaar repository to GIT repository?

  - by Naruto Uzumaki

  We have a large bazaar repository and we want to convert it to a git repository. The bazaar repository contains the folders of each of the interns. Any documentation/code prepared by interns is committed in their directory so there are a huge number of commits. What steps should be performed to securely convert the bazaar repository to a git repository so that we do not lose any commit information. We firstly need to create a backup of the existing bazaar repository and then convert it. Edit: I followed this link: http://librelist.com/browser//cville/2010/2/9/migrate-repository-bzr-to-git/ It's working fine on my system with Ubuntu. But when I try to run it on the actual server it gives me EOF error and crashes Starting export of 1036 revisions ... fatal: EOF in data (1825 bytes remaining) fast-import: dumping crash report to .git/fast_import_crash_11804 Edit 2: I also tried it on a new CentOS system and received the following error fatal: ambiguous argument 'HEAD': unknown revision or path not in the working tree. Use '--' to separate paths from revisions

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• How the make the volume change more gradually?

  - by xio

  So I'm currently using Ubuntu 13.04 on a Lenovo Thinkpad R61i laptop and the problem I have is that the actual sound volume doesn't grow linearly with the change of the volume slider position: in the range from 0% to 75% it grows very slowly, but in the range from 75% to 100% does so very rapidly - so that a small change of the slider's position corresponds to an unproportionally large change in volume. What might be the case and how can I fix it? Used to work well on Ubuntu 11.*

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• Library and several small programs that use it: how should I structure my git repository?

  - by Dan

  I have some code that uses a library that I and others frequently modify (usually only by adding functions and methods). We each keep a local fork of the library for our own use. I also have a lot of small "driver" programs (~100 lines) that use the library and are used exclusively by me. Currently, I have both the driver programs and the library in the same repository, because I frequently make changes to both that are logically connected (adding a function to the library and then calling it). I'd like to merge my fork of the library with my co-workers' forks, but I don't want the driver programs to be part of the merged library. What's the best way to organize the git repositories for a large, shared library that needs to be merged frequently and a number of small programs that have changes that are connected to changes in the library?

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• Desktop application, dependency injection

  - by liori

  I am thinking of applying a real dependency injection library to my toy C#/GTK# desktop application. I chose NInject, but I think this is irrelevant to my question. There is a database object, a main window and several utility window classes. It's clear that I can inject the database into every window object, so here DI is useful. But does it make sense to inject utility window classes into other window classes? Example: I have classes such as: class MainWindow {…} class AddItemWindow {…} class AddAttachmentWindow {…} class BrowseItemsWindow {…} class QueryBuilderWindow {…} class QueryBrowserWindow {…} class PreferencesWindow {…} … Each of the utility classes can be opened from MainWindow. Some utility windows can also be opened from other utility windows. Generally, there might be a really complex graph of who can open whom. So each of those classes might need quite a lot of other window classes injected. I'm worried that such usage will go against the suggestion not to inject too many classes at once and become a code smell. Should I use some kind of a service locator object here?

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