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  • Are flag variables an absolute evil?

    - by dukeofgaming
    I remember doing a couple of projects where I totally neglected using flags and ended up with better architecture/code; however, it is a common practice in other projects I work at, and when code grows and flags are added, IMHO code-spaghetti also grows. Would you say there are any cases where using flags is a good practice or even necessary?, or would you agree that using flags in code are... red flags and should be avoided/refactored; me, I just get by with doing functions/methods that check for states in real time instead. Edit: Not talking about compiler flags

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  • Remove bottom panel from a remastered LiveCD

    - by Uri Herrera
    How can I remove or autohide to 0 the bottom Gnome panel from a remastered liveCD and autostart AWN (or any dock for that matter...) to replace it? , just as moonOS 4 (the distro that gave me the idea to try to do this) Using this command to enable the auto hide gconftool-2 -t bool -s /apps/panel/default_setup/toplevels/bottom_panel/auto_hide "true" i Figured out how to Autostart AWN,however that involves removing BOTH panels, so im not quite there yet Using UCK gconf-editor to manually edit the option to auto hide the bottom panel doesn't work, when testing the livecd BOTH panels are still there, even though i use the command and then run gconf-editor to check that the option is eneabled, which it is, however, once the livecd starts the autohide feature is disabled

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  • How does a search functionality fit in DDD with CQRS?

    - by Songo
    In Vaughn Vernon's book Implementing domain driven design and the accompanying sample application I found that he implemented a CQRS approach to the iddd_collaboration bounded context. He presents the following classes in the application service layer: CalendarApplicationService.java CalendarEntryApplicationService.java CalendarEntryQueryService.java CalendarQueryService.java I'm interested to know if an application will have a search page that feature numerous drop downs and check boxes with a smart text box to match different search patterns; How will you structure all that search logic? In a command service or a query service? Taking a look at the CalendarQueryService.java I can see that it has 2 methods for a huge query, but no logic at all to mix and match any search filters for example. I've heard that the application layer shouldn't have any business logic, so where will I construct my dynamic query? or maybe just clutter everything in the Query service?

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  • Installing 64bit Java 7 - Cannot Execute Binary File

    - by warpstack
    So I downloaded the latest version of Java from Oracle so I could get a 64bit JVM on Ubuntu Server 10.10. After extracting the file and updating the alternatives I went to check my installation by running java -version and I get this error: -bash: /usr/bin/java: cannot execute binary file I'm at a loss for what to do here. My alternatives menu looks like this: Selection Path Priority Status ------------------------------------------------------------ 0 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 auto mode 1 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 manual mode 2 /usr/lib/jvm/java-7-openjdk-i386/jre/bin/java 1051 manual mode * 3 /usr/lib/jvm/jdk1.7.0/bin/java 3 manual mode After restarting the system I seem to be getting a totally new error when checking the java version. usr/bin/java: 1: Syntax error: end of file unexpected (expecting ")")

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  • Together at Last

    - by [email protected]
    OpenWorld, JavaOne, and Oracle Develop Get ready to converge on the ultimate IT convergence. Join us September 19-23 in San Francisco to attend Oracle OpenWorld, JavaOne, and Oracle Develop. With our new and complete technology stack apps-to-disk approach, there's something here for everyone. For all the nitty-gritty details, check out this recent article from Oracle Magazine. Better yet, reserve your place now on our registration page. We'll turn your visit to the city of the Golden Gate into a golden opportunity for your enterprise.

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  • Identity verification

    - by acjohnson55
    On a site that I'm working on, I'm trying to find ways of enforcing a one-person, one-account rule. In general, we'd like to do this by providing options to authenticate users with third-party services that provide this assurance. For example, it's possible to authenticate with Facebook and check whether the user is considered "verified" by Facebook (which means they must have provided either a phone number or credit card). This is roughly the level of identity verification we require--we're not doing banking or anything like that. But we want to give the user options. My question is, who else, besides Facebook, provides this? (uncertain of the proper SE forum, please comment if there's a better SE site to ask this)

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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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  • Unable to Upgrade from 13.04 to 13.10

    - by Mohit
    Following is what I get as error Error during update A problem occurred during the update. This is usually some sort of network problem, please check your network connection and retry. W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/main/source/Sources 404 Not Found , W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/restricted/source/Sources 404 Not Found , W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/universe/source/Sources 404 Not Found , W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/multiverse/source/Sources 404 Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead. Restoring original system state I am using command line "do-release-upgrade" I have changed my dns to google public dns and verified that using nslookup and host -v could not find bg.archive.ubuntu.com in any of the source list files. not only in that in another tab I have ping google running just to verify that network is not down. Network has no issues.

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  • Compact DIY Office-in-a-Cart Packs Away Into a Closet

    - by Jason Fitzpatrick
    Many geeks know the pain of losing a home office when a new baby comes along, but not many of them go to such lengths to miniaturize their offices like this. With a little ingenuity an entire home office now fits inside a heavily modified IKEA work table. Ian, an IKEAHacker reader and Los Angeles area geek, explains the motivation for the build: I had to surrender my home office to make room for my new baby boy ;) I took an Ikea stainless steel kitchen “work table”, some Ikea computer tower desk trays, two steel tabletops, and two grated steel shelves to make an “office” that I could pack away into a closet. Hit up the link below to check out the full photo set, the build includes quite a few clever design choices like mounted monitors, a ventilation system, and more. Home Office In A Box [IKEAHacker] HTG Explains: How Antivirus Software Works HTG Explains: Why Deleted Files Can Be Recovered and How You Can Prevent It HTG Explains: What Are the Sys Rq, Scroll Lock, and Pause/Break Keys on My Keyboard?

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  • Is there a good book to grok C++?

    - by Paperflyer
    This question got me thinking. I would say I am a pretty experienced C++ programmer. I use it a lot at work, I had some courses on it at the university, I can understand most C++ code I find out there without problems. Other languages you can pretty much learn by using them. But every time I use a new C++ library or check out some new C++ code by someone I did not know before, I discover a new set of idioms C++ has to offer. Basically, this has lead me to believe that there is a lot of stuff in C++ that might be worth knowing but that is not easily discoverable. So, is there a good book for a somewhat experienced C++ programmer to step up the game? You know, to kind of 'get' that language the way you can 'get' Ruby or Objective-C, where everything just suddenly makes sense and you start instinctively knowing 'that C++ way of thing'?

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  • Remote Desktop Viewer Set-up for 12.10

    - by Sir Linuxalot
    How do you set up the Remote Desktop in 12.10? I've scanned the available answers here and didn't find anything that answers the question considering the 12.10 interface. Specifically, advice says to check the "Allow Others to Control Your Desktop" and an IP will pop up (10.04 I believe). But when checking this in Quezal no IP shows. So how would I connect to my desktop from somewhere other than the local network, like say a coffee house? I also see this Remmina client program but have no idea if I need to use that as well. Can someone give me a step-by-step or point me to one that I haven't found yet? Thanks.

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  • That Physics of Coffee Rings [Video]

    - by Jason Fitzpatrick
    The rings left behind by coffee cups are distinctly uniform in their distribution–the stain is always around the edge. This video from the University of Pennsylvania’s Physics Department demonstrates why. Check out the above video to see the physics behind the ring-shaped stains and how altering the shape of the particulate in the liquid completely changes the shape of the stain. The Coffee Ring Effect [via Neatorama] HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full

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  • BlueStacks Android App Player Now Available for Macs

    - by Jason Fitzpatrick
    Last year we showed you how to setup BlueStacks on your Windows machine in order to enjoy Android apps on your PC desktop; now BlueStacks is available for Mac OS X with that same cross-platform Android goodness. The Mac version functions much the same as the PC version, if you’re interested in the Mac version be sure to check out our detailed guide to setting up the PC version. BlueStacks for Mac [via TUAW] How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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  • Traktor Audio 2 DJ soundcard configuration

    - by Jaroslav
    I have a Traktor Audio 2 DJ USB sound card (the first version of what it's now called simply Traktor Audio 2) The problem in settings it only sees one output, when there should be two (I need that for Mixxx etc.) Also I want to be able set the sample rate to one of these: 44.1, 48, 88.2, 96 kHz or at least check which one is set. Additionally if possible setting the latency would be an advantage. Some info: $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: TraktorAudio2 [Traktor Audio 2], device 0: Traktor Audio 2 [Traktor Audio 2] Subdevices: 1/2 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 $ cat /proc/asound/cards 0 [HDMI ]: HDA-Intel - HDA ATI HDMI HDA ATI HDMI at 0xfdcfc000 irq 45 1 [TraktorAudio2 ]: snd-usb-caiaq - Traktor Audio 2 Native Instruments Traktor Audio 2 (usb-0000:00:1d.7-8)

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  • SQL SERVER – Last Two Days to Get FREE Book – Joes 2 Pros Certification 70-433

    - by pinaldave
    Earlier this week we announced that we will be giving away FREE SQL Wait Stats book to everybody who will get SQL Server Joes 2 Pros Combo Kit. We had a fantastic response to the contest. We got an overwhelming response to the offer. We knew there would be a great response but we want to honestly say thank you to all of you for making it happen. Rick and I want to make sure that we express our special thanks to all of you who are reading our books. The offer is still on and there are two more days to avail this offer. We want to make sure that everybody who buys our most selling combo kits, we will send our other most popular SQL Wait Stats book. Please read all the details of the offer here. The books are great resources for anyone who wants to learn SQL Server from fundamentals and eventually go on the certification path of 70-433. Exam 70-433 contains following important subject and the book covers the subject of fundamental. If you are taking the exam or not taking the exam – this book is for every SQL Developer to learn the subject from fundamentals.  Create and alter tables. Create and alter views. Create and alter indexes. Create and modify constraints. Implement data types. Implement partitioning solutions. Create and alter stored procedures. Create and alter user-defined functions (UDFs). Create and alter DML triggers. Create and alter DDL triggers. Create and deploy CLR-based objects. Implement error handling. Manage transactions. Query data by using SELECT statements. Modify data by using INSERT, UPDATE, and DELETE statements. Return data by using the OUTPUT clause. Modify data by using MERGE statements. Implement aggregate queries. Combine datasets. INTERSECT, EXCEPT Implement subqueries. Implement CTE (common table expression) queries. Apply ranking functions. Control execution plans. Manage international considerations. Integrate Database Mail. Implement full-text search. Implement scripts by using Windows PowerShell and SQL Server Management Objects (SMOs). Implement Service Broker solutions. Track data changes. Data capture Retrieve relational data as XML. Transform XML data into relational data. Manage XML data. Capture execution plans. Collect output from the Database Engine Tuning Advisor. Collect information from system metadata. Availability of Book USA - Amazon | India - Flipkart | Indiaplaza Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Joes 2 Pros, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Free CodeRush Plugin: VS Add New Items Simplified!

    Check out this new CodeRush plugin that saves you time by letting you create items from Visual Studios "Add New Dialog" without using the dialog! Watch the CodeRush DXNewItem plugin dialog to learn how to install and use this plugin: Download DX_NewItem Here   Feedback Be sure to leave Rory feedback below for another great CodeRush plugin! Thanks Rory!   Want to experience a better Visual Studio? Install CodeRush by downloading the free lite version here: CodeRush...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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  • Ever wonder why Earth spins?

    - by Gopinath
    Have you ever wonder why Earth spins on its axis and completes a revolution every day? Is there any force that keeps Earth spinning? Is that because of  Gravity or any Magnetic force? Check out this video to learn why Earth spins and the basics of physics behind the magic If you find that above video is in simple English and it’s not convincing physicist inside you, lets hear from a NASA scientist in the embedded video. A NASA scientist explains how Earth rotation has started, how fast it was billions of years ago and what caused it to slow down to 24 hours to complete a revolution   Thanks @pinaldev

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  • How can I create tiles that scale to multiple resolutions?

    - by Darestium
    I am trying to create a multiplayer version of the popular Flash game N in Java. However, I'm not sure how to create a tileset that will scale up. Are the tiles for N pre-drawn or are they defined with mathamatical formulas in code? I do see how they would scale up in Flash if they were pre-rendered. So if anyone has any ideas how I should go about creating the tileset, or how they are created in the game please let me know. You can check out the game here.

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  • "Unable to install initrd-tools" error during installation.

    - by Rahul
    Was trying to install Ubuntu from a CD on a machine which already has windows on it, choose the option of "Resize IDE1 master (hda) and use freed space" during the "Install the base system" step. After that i get the error: Unable to install initrd-tools. An error was returned while trying to install the initrd-tools package into the target system. Check /target/var/log/bootstrap.log for details. The problem is one one hand i cannot proceed with the complete installation and on other hand if i remove the CD, am not able to boot windows as it says No bootable device. Would highly appreciate for any recommendations.

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  • Airline mess - what a journey

    - by Mike Dietrich
    What a day, what a journey ... Flew this noon from Munich to Zuerich for catch my ongoing flight to San Francisco with Swiss. And that day did start very well as Lufthansa messed up the connection flight by 42 minutes for a 35 minute flight. And as I was obviously the only passenger connection to San Francisco nobody picked me up at the airplane to bring me directly to my connection as Swiss did for the 8 passengers connection to Miami. So I missed my flight. What a start - and many thanks to Lufthansa. I was not the only one missing a connection as Lufthansa/Swiss had canceled the flight before due to "technical problems". In Zuerich Swiss did rebook me via Frankfurt with Lufthansa to board a United Airlines flight to San Francisco. "Ouch" I thought. I had my share of experience with United already as they've messed up my luggage on the way to San Francisco some years ago and it took them five (!!!) days to fly my bag over and deliver it. But actually it was the only option today. So I said "Yes". A big mistake as I've learned later on. The Frankfurt flight was delayed as well "due to a late incoming aircraft". But there was plenty of time. And I went to the Swiss counter at the gate and let them check if my baggage is on that flight to Frankfurt. They've said "Yes". Boarding the plane with a delay of 45 minutes (the typical Lufthansa delay these days) I spotted my Rimowa trolley right next to the plane on the airfield. So I was sure that it will be send to Frankfurt. In Frankfurt I went to the United counter once it did open - had to go through the passport check they do for US flights as well - and they've said "Yes, your luggage is with us". Well ... Arriving in San Francisco with just a bit of a some minutes delay and a very fast immigration procedure I saw the first bags with Priority tags getting pushed to the baggage claim - but mine was not there. I did wait ... and wait ... and wait. Well, thanks United, you did it again!!! I flew twice in the past years United Airlines - and in both cases they've messed up my luggage on the way to San Francisco. How lovely is that ... Now the real fun started again as the lady at the "Lost and Found" counter for luggage spotted my luggage in her system in Zuerich - and told me it's supposed to be sent with LH1191 to Frankfurt on Sept 27. But this was yesterday in Europe - it's already Sept 28 - and I saw my luggage in front of the airplane. So I'd suppose it's in Frankfurt already. But what could she do? Nothing but doing the awful paperwork. And "No Mr Dietrich, we don't call international numbers". Thank you, United. Next time I'll try to get a contract for a US land line in advance. They can't even tell you which plane will bring your luggage. It may be tomorrow with UA flight arriving around 4pm in SFO. I'm looking forward to some hours in the wonderful United Airlines call center waiting line. Last time I did spend 60-90 minutes every day until I got my luggage. If it takes again that long then OOW will be over by then. I love airline travel - and especially with United Airlines. And by the way ... they gave us these nice fancy packages during the flight:  That looks good - what's in that box??? Yes, really ... a bag of potato chips. Pure fat - very healthy.  I doubt that I'll ever fly United Airlines again!!!

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  • Problem upgrading from 13.04 to 13.10

    - by Charles
    Part way through upgrading from 13.04 to 13.10 the process ground to a halt with an error message. Now on retrying by going to 'Check for updates' I get the following: Failed to load the package list This is a serious problem. Try again later. If this problem appears again, please report an error to the developers. E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_saucy_universe_i18n_Translation-en%%5fGB, E:The package lists or status file could not be parsed or opened. Problem reported but my question is, "what can I do now?; Do I have to do a fresh install?; if so will settings etc. in my Home folder (on its own partition) be saved?" 13.04 still seems to be working perfectly, while upgrading I had a terrible internet connection varying between 'dead slow' and 'dead stop', not sure if that caused the problem.

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  • LED 49-unit Quadcopter Formation Foreshadows The Robot Takeover

    - by Jason Fitzpatrick
    Perhaps there are a few more steps between 49 semi-autonomous quadcopters doing a little aerial dancing and Skynet, but we’re awed and apprehensive at the same time. Check out the video to see them in action. The video comes to us courtesy of a German art conference, Ars Electronica, and a colloboration between two design groups Futurelab and Ascending Technologies GmbH. The above video is just their warmup routine; according to YouTube comments they’ll be uploading even more videos of the quadcopters and their synchronized night flights in the coming days. [via Motherboard] HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks

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  • Copy diagram with swimlanes in Enterprise Architect

    - by blomqvist
    This is a post mostly to myself, so that when I forget this I can come here and check it out :) (I forget about ctrl-b from time to time) When copying diagrams from Enterprise Architect you can use ctrl-B to include the swim-lanes. A normal ctrl-c will not give you the swim-lanes. A side effect is that ctrl—b gives you a copy of the whole diagram, you cannot select what objects to copy. So marking objects first or pressing ctrl-A to selects all is both unnecessary and meaningless since ctrl-b seems to mean: “copy the whole diagram now and include all the stuff in there, even the swimlanes” (which ctrl-A, ctrl-C does not).

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  • KnockoutJS 2.3.0 - Uncaught Error: You cannot apply bindings multiple times to the same element.

    - by Aligned
    Originally posted on: http://geekswithblogs.net/Aligned/archive/2013/07/25/knockoutjs-2.3.0---uncaught-error-you-cannot-apply-bindings-multiple.aspxI upgrade KnockoutJs through Nuget and started getting the error ‘Uncaught Error: You cannot apply bindings multiple times to the same element.’ when I used applyBindings after the main page load. I had some dynamically added DOM elements and re-applying bindings worked before. It always seemed like a workaround/hack, but now Knockout is telling me that I shouldn’t do it. The quick way to fix this is to use ko.cleanNode($(‘#id’) and this works. A different/possibly better way, as suggested by x0n might be to use templates and Knockout’s template binding (<script type=’text/html’>…</script>).   Thanks again to the StackOverflow community for quickly providing me with the solution. Check out my question for all the details.

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  • Why does Clang/LLVM warn me about using default in a switch statement where all enumerated cases are covered?

    - by Thomas Catterall
    Consider the following enum and switch statement: typedef enum { MaskValueUno, MaskValueDos } testingMask; void myFunction(testingMask theMask) { switch theMask { case MaskValueUno: {}// deal with it case MaskValueDos: {}// deal with it default: {} //deal with an unexpected or uninitialized value } }; I'm an Objective-C programmer, but I've written this in pure C for a wider audience. Clang/LLVM 4.1 with -Weverything warns me at the default line: Default label in switch which covers all enumeration values Now, I can sort of see why this is there: in a perfect world, the only values entering in the argument theMask would be in the enum, so no default is necessary. But what if some hack comes along and throws an uninitialized int into my beautiful function? My function will be provided as a drop in library, and I have no control over what could go in there. Using default is a very neat way of handling this. Why do the LLVM gods deem this behaviour unworthy of their infernal device? Should I be preceding this by an if statement to check the argument?

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