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• Reliability Monitor is the Best Windows Troubleshooting Tool You Aren’t Using

  - by The Geek

  When it comes to hidden gems in Windows, nothing beats the Reliability monitor tool, hidden behind a link inside of another tool that you don’t use either. Why Microsoft doesn’t shine more light on this really useful troubleshooting tool, we’ll never know. Reliability Monitor tracks the history of your computer — any time an application crashes, hangs, or Windows gives you a blue screen of death. It also tracks other important events, like when software is installed, or Windows Updates loads a new patch. It’s an extremely useful tool. And yes, it’s in Windows 7 and 8… and even 8.1. It might be in Vista, but who uses that anymore?    

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• What Java class should I use to represent a Vector?

  - by user8363

  Does Java have a built-in Vector class suitable for handling collision detection / response? It should have methods like subtract(Vector v), normalize(), dotProduct(Vector v), ... It seems logical to use java.awt.Rectangle and java.awt.Polygon to calculate collisions. Would I be right to use these classes for this purpose? I understand collision detection; I'm only wondering what approach to it is idiomatic in Java. I'm new to the language and to application development in general.

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• Unity session goes to lock on app launch, and won't unlock with password

  - by really

  Has been happening on every Ubuntu machine I've used to date, which is a total of 4. Started in 12.10 as far as I know, but it might have happened with 12.04, 12.10, 13.04, 13.10 and now 14.04. It doesn't seem to matter what I'm doing, but what always seems to trigger it is opening a web browser or some other application first from the sidebar. Firefox was was the most recent trigger. Instead of opening my browser, which it acts like it's going to do... the session locks, goes to the login screen, and won't unlock with the correct password. By 'won't unlock' I mean it unlocks then immediately locks again without first restoring unity, it does not produce 'incorrect password' I suspect this is a virus or password snooping software because of the fact it won't unlock with correct password information and I think if this IS a security issue, it should be fixed asap considering it's widespread throughout multiple versions. It's probably not a virus, but it is certainly suspicious behaviour to see your pc do that... wouldn't you think?

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• Swap Mouse Buttons on startup

  - by andy boot

  This one bugs me. I fashioned this handy script to swap the left and right mouse buttons over: [My mouse is a Razer] /usr/bin/xinput set-button-map `xinput list | grep 'Razer' | grep -o \=[0-9]* | grep -o [0-9]*$` 3 2 1 4 5 6 7 8 1 10 11 12 13 When I run this in a Terminal it works. When I go to Startup Application Preferences - Add and then literally paste the above into the command field as an 'Additional startup program' It does not run on startup. Why not? I'm using Ubuntu 11-10 but this also applied to the 10-10

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• How to write loosely coupled classes in node.js

  - by lortabac

  I am trying to understand how to design node.js applications, but it seems there is something I can't grasp about asynchronous programming. Let's say my application needs to access a database. In a synchronous environment I would implement a data access class with a read() method, returning an associative array. In node.js, because code is executed asynchronously, this method can't return a value, so, after execution, it will have to "do" something as a side effect. It will then contain at least 1 line of extraneous code which has nothing to do with data access. Multiply this for all methods and all classes and you will very soon have an unmanageable "code soup". What is the proper way to handle this problem? Am I approaching it the wrong way?

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• Oracle Unveils Oracle Java Embedded Suite 7.0

  - by user12612705

  Today Oracle announced the Oracle Java Embedded Suite 7.0. What is the Java Embedded Suite (JES)? It's a middleware stack designed to be run on embedded devices. It's a suite which includes an application server (Glassfish for Embedded Suite), database (Java DB), and web services (Jersey Web Services Framework). Putting these services on the embedded device gives you the ability to provide a set of services at the device point. It also lets you aggregate data at the device point, which you can later sync with your enterprise systems.

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• Marching squares: Finding multiple contours within one source field?

  - by TravisG

  Principally, this is a follow-up-question to a problem from a few weeks ago, even though this is about the algorithm in general without application to my actual problem. The algorithm basically searches through all lines in the picture, starting from the top left of it, until it finds a pixel that is a border. In pseudo-C++: int start = 0; for(int i=0; i<amount_of_pixels; ++i) { if(pixels[i] == border) { start = i; break; } } When it finds one, it starts the marching squares algorithm and finds the contour to whatever object the pixel belongs to. Let's say I have something like this: Where everything except the color white is a border. And have found the contour points of the first blob: For the general algorithm it's over. It found a contour and has done its job. How can I move on to the other two blobs to find their contours as well?

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• How to find classes that use certain DB tables

  - by Songo

  Problem: I'm asked to prepare a document where all our DB tables are listed and I'm supposed to list all Controllers that uses these DB tables for read and another list for Controllers that do write operations. Ex: +------------------------------------------+------------+ | DB table | tbl_Orders | +------------------------------------------+------------+ |Controllers that perform read operations | ?? | +------------------------------------------+------------+ |Controllers that perform write operations | ?? | +------------------------------------------+------------+ We are trying to write some documentation for a legacy system built using Zend framework. The code is scattered everywhere. There is code in the Controllers, in the models and even in the views. The application uses PROPEL as an ORM. What makes this really difficult is that the Controller may not be directly calling the table, but it may be instantiating a model class that calls that table. Is there an educated way to approach this crazy task? Note: Searching for the table name won't provide a solution because if a model uses that table I wouldn't know which Controller is using that model.

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• Event Driven Programming 101

  - by JHarley1

  Good Morning, I previously asked the Q. of how Event Handlers Work (which I got a great answer for). I would now like to understand the basics of how are events are associated with on-screen objects? An explanation of how Events are associated with on Screen Objects: The application registers the Event, the Event Handler and the Component with the GUI Server. When an Event is detected the GUI Server has to link an Event to a Window and then to a Component, it then consults the Event / Component Table to identify which Handler (s) to be executed. I am having problems finding resources/papers that have mention of this process - especially of a Event / Component Table - can anyone clarify?

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• How to start embedded development for developing a handheld game console?

  - by Quakeboy

  I work as a iPhone app developer now, so I know a bit of c, c++ and objective c. Also have fiddled with Java and many other. All of them have been just high level application/games development. My final goal is to make a handheld game console. More like a home made NES/SNES handheld console or even an Atari. I have found out about RaspberryPI and Arduino. But I need more information about how to approach this. 1) How Do I learn to pick the best board/cpu/controller/GPU/LCD screen/LCD controller etc? 2) Will learning to make a NES emulator first help me understand this field? If so are there any tutorials?

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• All tweak settings not saving?

  - by mawburn

  I am running Ubuntu GNOME 14.04. After the last 2 updates, all settings in the Tweak menu are no saving. It will also not switch to the Gnome Dark theme at all. This includes all Startup Application changes as well as any changes to Extension settings. I'm not sure if I need to include any sort of log records or anything like that, so if you need any more information please ask. I've noticed the default fonts seem to be different. I don't remember that being part of the theme settings. It's almost like I'm running in Safe Mode.

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• Citrix SDK: Where to start? [closed]

  - by Bob Dole

  I'm needing to start hacking around the Citrix SDK and am trying to figure out where to start. I'm wanting to basically find a way to pass data from the client to the server and figure out how to open an application on the citrix client. I see there is a XenApp SDK, and Virtual Channel SDK but really don't know which one I need to start with. I have a Citrix development virtual server set up, but am unsure how to get started. Does someone know of a good site/tutorial on how to get started with the various Citrix API's quickly?

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• Find out which SQL Server instance is consuming most of the CPU

  We have a number of SQL Server hosts with multiple SQL Server instances. From time to time we have CPU issues, but we are not sure which instance is causing the issue. How do you find which SQL Server instance is causing CPU pressure on machine with multiple SQL Server instances? Check out this tip for ideas on how to find the correct SQL Server instance which is causing CPU pressure. Keep your database and application development in syncSQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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• Ubuntu 12.04 Battery problem

  - by Rahul

  I have my laptop ( Dell Inspiron 14R) on dual boot with Ubuntu 12.04 and Windows 7. While using Windows 7, I used to get about 2.5-3 hours on battery fully charged (with my cellphone connected for 3g Internet). The battery is almost 2 years old. But in Ubuntu 12.04, I'm getting only about 1-1.5 hrs on battery. I tried installing jupiter, also tried some tweaks that were mentioned in the forums, like editing the grub file. But nothing seems to work. I am not sure if any app is draining the battery. The one application that I use always is firefox. It's always open. Is there any way I could get at least 2.5 hrs of battery time?

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• Chromium web-app creation doesn't work in 12.10?

  - by speter

  If you create an application of a website in Chromium and choose "desktop", a .desktop file is created. In 12.04, you were able to move it to ~/,local/share/applications/ and then start it from the Dash or the launcher. In my fresh 12.10 installation, this doesn't work anymore. I think the line that is misinterpreted is Exec=/usr/bin/chromium-browser --app=http://buymeapie.com/. If you try to run it from a terminal, you get the following result: 20:32 ~ speter Exec=/usr/bin/chromium-browser --app=http://buymeapie.com/ bash: --app=http://buymeapie.com/: Datei oder Verzeichnis nicht gefunden (English: "File or directory not found"). Can anyone explain or knows a workaround?

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• when should a database table be broken into multiple tables with relations?

  - by GSto

  I have an application that needs to store client data, and part of that is some data about their employer as well. Assuming that a client can only have one employer, and that the chance of people having identical employer data is slim to none, which schema would make more sense to use? Schema 1 Client Table: ------------------- id int name varchar(255), email varchar(255), address varchar(255), city varchar(255), state char(2), zip varchar(16), employer_name varchar(255), employer_phone varchar(255), employer_address varchar(255), employer_city varchar(255), employer_state char(2), employer_zip varchar(16) **Schema 2** Client Table ------------------ id int name varchar(255), email varchar(255), address varchar(255), city varchar(255), state char(2), zip varchar(16), Employer Table --------------------- id int name varchar(255), phone varchar(255), address varchar(255), city varchar(255), state char(2), zip varchar(16) patient_id int Part of me thinks that since are clearly two different 'objects' in the real world, seperating them out into two different tables makes sense. However, since a client will always have an employer, I'm also not seeing any real benefits to seperating them out, and it would make querying data about clients more complex. Is there any benefit / reason for creating two tables in a situation like this one instead of one?

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• Representing timezone list

  - by StasM

  I have a web application that allows the user to choose the timezone from the list. The list is very long (pretty much all CLDR-supported timezones). So the question is - how should I represent it? How should it be sorted - alphabetically or by timezone offset? What information should each item contain - offset, location, long name (like Europe/Zurich) or short name (like CET)? Should I display information about DST or only current offset? Let's say I can't right now do something like fancy maps OS configuration dialogs display, so the list is the only option. However I want to make the list look nice. Any best practices how it's done?

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• Bing disponible comme plateforme pour développeurs avec l'imagerie 3D et la recherche vocale contextuelle

  Bing disponible comme plateforme pour développeurs avec l'imagerie 3D et la recherche vocale contextuelleMicrosoft a annoncé pendant la Build 2013 à Seattle qu'il a ouvert son outil de recherche Bing comme plateforme pour développeurs. Gurdeep Singh Pall, Vice-Président de l'entreprise, a fait une démonstration pour exposer les capacités dont les développeurs pourront désormais bénéficier. Pall a montré comment ajouter un élément à la to-do liste d'une application tiers en faisant usage du contrôle vocal de Bing. Dans le cas d'espèce, il a créé un mémento sur ses intentions de voyage en direction de l'Espagne.La démonstration est allée un peu plus loin. Pall a obtenu des informations lu...

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• GitHub OS project how to have a good version and a work in progress version

  - by Para

  I have started my own OS application, I am hosting it on GitHub. My problem is that I push changes to the repository from more than one location so sometimes I want to work on it and sometimes I can't always finish something in time but I would still like to push it anyway so I can fetch it later from my other location. I'd like to be able to somehow have a stable version and have the master branch be a 'work in progress'. How do I do this? Is there some button I can push that will take the code from my master branch and make it into a zip file in my downloads tab and call it a version or should I do this by hand? Would it be better to have the master branch be nice and neat and have a separate branch to play with and then merge the two when the time is right? Would this not cause more problems in the merging phase?

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• Create many similar classes, or just one

  - by soandos

  The goal is to create an application that has objects that can represent some operations (add, subtract, etc). All of those objects will have common functions and members, and thus will either implement an interface or inherit from an abstract class (Which would be better practice, this will be in C# if that matters?). As far as I can see, there are two different ways of organizing all of these classes. I could create an addition class, a subtraction class, etc. This has the upside of being highly modular but the difference between classes is so minimal. I could create one class, and have a member that will say what type of operation is being represented. This means lots of switch statements, and losing some modularity, in addition to being harder to maintain. Which is is better practice? Is there a better way of doing that is not listed above? If it matters, the list of functions that should be supported is long.

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• "From the Coal Face" - 1 - What ILDASM can reveal!

  - by TATWORTH

  In a place far, far away, there was a project where the Architect decided on using embedded TSQL in a Dot Net application, rather than use stored procedures. I located ILDASM.EXE (my Framework 3.5 version lives at C:\Program Files\Microsoft SDKs\Windows\v7.0A\bin on my home development PC) and created a shortcut to it in the SendTo folder. Now I could set about doing a simple demonstration to the Architect by taking one of the Dot Net EXE's with the embedded TSQL and sending it to ILDASM.  Since I had written most of the embedded TSQL, it was a matter of seconds before I located the embedded TSQL within the Exe. The TSQL that was supposed to be safely hidden within the EXE was easily located and and copied. (It should also be noted that we could have encrypted the stored procedures on loading them to the database.)

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• Where to contribute a Mozilla Persona example?

  - by Serg

  I found out about Mozilla Persona today and fell in love with it completely. It really does feel like the future of account management. For the first time ever, I actually want to contribute to open source because I believe in this tech. I wrote a simple ASP.Net MVC3 demo web application showing how to login and logout users using Persona. I want devs in my language ecosystem to have a simple time learning about this by reading example code. Here is the repository: https://github.com/sergiotapia/ASP.Net-MVC3-Persona-Demo Where do I contribute this link to my repository so it's easily found? Any suggestions? It's my first time releasing code for a "big project" so to speak.

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• Job selection between (.net) or PHP [closed]

  - by Swapnil Gondkar

  Hi am Swapnil I am just a fresher passout of 2011 batch of engineering from Mumbai University I have developed dynamic websites on PHP and have quite a good experience working with php for 2years. Now When I went for interviews I got selected for a company that manifolds into PHP and its technologies to create websites.The other company in which I also got selected offers more than half the higher package than previous but I have to work here on .net platform and all the Microsoft Technologies which I do not merry. The work environment of php company is quite cool with 400employees(onli 10 php developers) and the .net company has only a strength of 20employees Now the thing is I do not know about Enterprise Application Building and other stuff so guys If any advice that may help me select my job would be appreciated.

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• Google présente Chrome Web Store, son magasin d'applications a quelques similitudes avec celui d'App

  Google présente son Chrome Web Store, son magasin d'applications a quelques similitudes avec celui d'Apple La semaine dernière, Google a enchainé les annonces importantes lors de sa conférence de développement I/O. La firme semble mettre en place diverses nouveautés qui s'articulent autour de la sortie prochaine de son système d'exploitation Chrome OS. Vendredi a été présenté le Chrome Web Store, une boutique d'application qui commercialisera (ou offrira) des programmes pour les smartphones et terminaux mobiles utilisant Chrome ainsi que pour les ordinateurs équipés de Chrome OS (jeux, applications, plug-ins pour Chrome, etc.). A Mountain View, on semble donc vouloir fortement concurrence l'App Store. D'ailleurs, le...

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• secure offline PC storage accessible through javascript

  - by turbo2oh

  I'm attempting to build a browser-based HTML5 application that has the ability to store data locally on a PC (not mobile device) when offline. This data is sensitive and must be secure. Of course the trick is trying to find a way to be able to access the secure data with Javascript. I've ruled out browser local storage since its not secure. Could this be accomplished with a local database? If so, where could the DB credentials be stored? Javascript obviously doesn't seem like a good option to store them since its user-readable.

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