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• Script to calculate the Median value for SQL Server data

  The standard SQL language has a number of aggregate functions like: SUM, MIN, MAX, AVG, but a common statistics function that SQL Server does not have is a built-in aggregate function for median. The median is the value that falls in the middle of a sorted resultset with equal parts that are smaller and equal parts that are greater. Since there is no built-in implementation for the median, the following is a simple solution I put together to find the median. Get smart with SQL Backup ProPowerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school. Discover why.

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• New technical whitepaper on Database-as-a-Service

  - by Javier Puerta

  High Availability Best Practices for Database Consolidation- The Foundation for Database-as-a-Service. An Oracle White Paper - April 2014 This paper provides MAA best practices for Database Consolidation using Oracle Multitenant. It describes standard HA architectures that are the foundation for DBaaS. It is most appropriate for a technical audience: Architects, Directors of IT and Database Administrators responsible for the consolidation and migration of traditional database deployments to DBaaS.  Recommended best practices are equally relevant to any platform supported by Oracle Database except where explicitly noted as being an optimization or an example that applies only to Oracle Engineered systems. 

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• Question about creating a sprite based 2-D Side Scroller with scaling/zooming

  - by Arthur

  I'm just wondering if anyone can offer any advice on how best to go about creating a 2-D game with zooming/scaling features akin to the early Samurai Showdown games. In this case it would be a side scroller a la Metal Slug, the zooming would come in as more enemy sprites entered the screen, or when facing a large sized boss. A feature that would be both cosmetic as well as functional to the game. I've done some reading and noticed a few suggestions that included drawing different sized sprites, a standard size and zoomed out size. Any thoughts? Thanks for your time.

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• Vocabulary: Should I call this apply or map?

  - by Carlos Vergara

  So, I'm tasked with organizing the code and building a library with all the common code among our products. One thing that seems to happen all the time and I wanted to abstract is posted below in pseudocode, and I don't know how to call it (different products have different domain specific implementations and names for it) list function idk_what_to_name_it ( list list_of_callbacks, value common_parameter ): list list_of_results = new list for_each(callback in list_of_callbacks) list_of_results.push(callback(common_parameter)) end for_each return list_of_results end function Would you call this specific construct a list ListOfCallbacks.Map( value value_to_map) method or would it better be value Value.apply(list list_of_callbacks) I'm really curious about this kind of thing. Is there a standard guide for this stuff?

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• Ubuntu samba file and print server

  - by Gerd

  I am using an old Dell desktop PC as a samba file and print server for a Windows 7 network. The version of Unbuntu I am running is 12.04 which seems to big for the RAM and disk space I have available. Unbuntu 12.04 runs very very slow, the printing over the home network works at a quite acceptable speed. I have two problems: SLOW Ubuntu and I cannot update samba. The update manager tells me "update failed". So my two questions: Is there anything I can remove from the standard 12.04 installation to make Ubuntu run faster and should I uninstall and the reinstall samba to overcome the "update failed" problem? I hesitate, as printing and file serving works somehow and I don't want to loose that. I know I should give you more information to give me answers. But what would you need to know? I am not a natural Linux user. Windows 7 is still my home. Thanks in advance, Gerd

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• Cannot resume from hibernate (s2disk)

  - by hwjp

  I seem to be able to hibernate OK using s2disk, but when I switch the laptop back on, it seems to hang half-way through the "resuming" menu. The splash screen looks healthy, it seems to be trying to resume from the correct disk, but it hangs about half-way through, with three little pips. One great help would be - where can I find the logs, and how do I get more verbose ones? There is some info in /var/log/pm-suspend.log, but that all seems fine, just lots of hibernate: success messages... How do I switch on more verbose logging in s2disk? And what about the resume process, where are the logs for that, and how can I make them more detailed? Background: the standard Ubuntu hibernate wouldn't work, so I've install uswusp and its associated tools - s2disk etc. That initially made things worse, but a fair amount of fiddling with its config, my swap size and so on seem to have got it at least seemingly successfully suspending...

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• How to find optimal path visit every node with parallel workers complicated by dynamic edge costs?

  - by Aaron Anodide

  Say you have an acyclic directed graph with weighted edges and create N workers. My goal is to calculate the optimal way those workers can traverse the entire graph in parralel. However, edge costs may change along the way. Example: A -1-> B A -2-> C B -3-> C (if A has already been visited) B -5-> C (if A has not already been visited) Does what I describe lend itself to a standard algorithmic approach, or alternately can someone suggest if I'm looking at this in an inherently flawed way (i have an intuition I might be)?

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• Is C++ indispensible for AAA game engines, as long as we have console-platform games? [closed]

  - by user1174924

  C++ has remained the industry standard for game engines much because of its features.. The primary reasons are(afaik): Technical reasons - High performance, native runtime, portibility, negligible latency, and more recently concurrency. Socio-Technical reasons - Availability of Libraries, Legecy stuff, most scripting languages on games have a good C api (ex lua), Good IDEs and most recently improved Development time.(C++11) Social reasons - People know C++, Licenced technologies, and battle proven. Does this make C++ for game engines indispensible, so long we have game consoles? Would not, the above features make me implement new graphics technology in C++ only? Edit: Will learning C++ garuntee me a job as a game engine dev In the future? I want to master every aspect of the language, but I already know C# and python. Should I allocate my time learning C++. I want to be a game engine developer.

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• When profiling a function for time use, what information is desirable?

  - by AaronMcSmooth

  I'm writing a program similar to Python's timeit module. The idea is to time a function by executing it anywhere from 10 to 100,000 times depending on how long it takes and then report results. I've read that the most important number is the minimum execution time because this is the number that best reflects how fast the machine can run the code in question in the absence of other programs competing for processor time and memory. This argument makes sense to me. Would you be happy with this? Would you want to know the average time or the standard deviation? Is there some other measure that you consider more important?

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• In Google Analytics, how can I determine the value of a page if no goals or revenue have been determined?

  - by Brandon Durham

  I have 4 years of data in Analytics with over 20 million pageviews for the entire site. No goals have ever been set up, and while the site is an ecommerce site, no ecommerce features in Google Analytics have ever been taken advantage of. So I have no way to determine what the actual value of a page is. I've been tasked with determining if a particular page on the site is worth keeping around. How might I use all standard data (pageviews, bounce rate, time on page, time on site, etc.) to help determine the value of this page? I really appreciate any help I can get!

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• Is "convention over configuration" not violating basic programming principles?

  - by Geerten

  I was looking at the WPF MVVM framework Caliburn.Micro and read that a lot of standard things are based on naming conventions. For example, automatic binding of properties in the View to properties in the ViewModel. Although this seems to be convenient (removes some boilerplate code), my first instinct reaction is that it isn't completely obvious to a new programmer that will read this code. In other words, the functionality of the application is not completely explained by its own code, but also by the documentation of the framework. EDIT: So this approach is called convention over configuration. Since I could not find any questions concerning this, I altered my question: My question is: Is convention over configuration a correct way of simplifying things, or is it violating some programming principles (and if so, which ones)?

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• Why is the font spacing on some websites broken?

  - by user950731

  I am using Ubuntu 12.04 on a Dell Studio 15 and so far am really impressed. I could not find a solution for my problem by googling. The fonts on some websites do not have proper spacing. they overlap and are very hard to read that way. I am using the Ubuntu standard fonts and have not changed them after installing. Here is a screencap that shows my problem. The problem occurs in Firefox and Chrome the same way, and on the same websites. Thanks for your help. Best regards el

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• Using packages (gems, eggs, etc.) to create decoupled architectures

  - by Juan Carlos Coto

  The main issue Seeing the good support most modern programming platforms have for package management (think gem, npm, pip, etc), does it make sense to design an application or system be composed of internally developed packages, so as to promote and create a loosely coupled architecture? Example An example of this would be to create packages for database access, as well as for authentication and other components of the system. These, of course, use external packages as well. Then, your system imports and uses these packages - instead of including their code within its own code base. Considerations To me, it seems that this would promote code decoupling and help maintainability, almost in a Web-based-vs.-desktop-application kind of way (updates are applied almost automatically, single code base for single functionality, etc.). Does this seem like a rational and sane design concept? Is this actually used as a standard way of structuring applications today? Thanks very much!

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• When is it appropriate to use colour in a command-line application?

  - by marcoms

  Currently I have a command-line application in C called btcwatch. It has a -C option that it can receive as an argument that compares the current price of Bitcoin with a price that was stored beforehand with -S. Example output with this option is: $ btcwatch -vC # -v = verbose buy: UP $ 32.000000 USD (100.000000 -> 132.000000) sell: UP $ 16.000000 USD (100.000000 -> 116.000000) The dilemma is whether to use colour for the UP or DOWN string (green and red, respectively). Most command-line applications I know of (apart from git) stay away from colour in their output. In my desire for btcwatch to look and be quite "standard" (use of getopt, Makefiles, etc), I'm not sure if colour would look out of place in this situation.

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• How to organize the nautilus bookmarks in the "Places" panel applet?

  - by piedro

  their seems to be no configuration dialog for the "Places" menue in the panel. Yes, I know how to add, remove or change the order of the bookmarks in nautilus. But I want to use folders and subfolders for the bookmarks. With more than 20 entries the nautilus bookmarks and the places menue become inconvenient. any editor for this? any configuration file that does the job? any other tool than the standard places menue? any extension for nautilus to extend the bookmark organization? thx for reading, p.

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• How to build completely modular web applications

  - by Webnet

  In the coming months we're going to begin a project where we take a system we've built for a client (v1) and rebuild it from scratch. Our goal with v2 is to make it modular, so that this specific client will have their own set of modules they use, then another client may use a different set of modules altogether. The trick here is that Company A might have a series of checkout and user modules that change how that system works. Company B might stick with the standard checkout procedure but customize how products are browsed. What are some good approaches to application architecture when you're building an application from scratch that you want to have a Core that's shared among all clients while still maintaining the flexability for anything to be modified specifically for a client? I've seen CodeIgniter's hooks and don't think that's a good solution as we could end up with 250 hooks and it's still not flexible enough. What are some other solutions? Ideally we won't need to draw a line in the sand.

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• What does it mean to "have experience with the Unix/Linux command line"? [closed]

  - by Aerovistae

  I'm a new comp sci grad applying to jobs, and this requirement confuses me, especially since the job description (Python back-end developer) says it's the single most important thing ("Everything else we can teach you!") I mean, I know how to use the command line... I know your standard run-of-the-mill stuff like navigating around and manipulating files and permissions and using pipes and running applications, but what are they looking for when they say something like that? I'm aware there's no end to what you can do with the command line, but I was under the impression that after a certain point it's the sort of thing that only benefits server/system administrators.

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• Is it OK to live without knowing how the program you created works?

  - by Kabumbus

  I mean, there are really useful libs that can solve problems when you are stuck and do not know how to solve this or that with your knowledge of programing language you use... For example, Boost for C++ or JQuery for JavaScript or Spring for Java... They solve problems in seconds and you do not really care how they did it (despite that they are written in the very same language you are programming in)... So I wonder am I alone use libs not being capable to write solutions for my problems from scratch or its standard practice?

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• How to Create an Installable DotNetNuke PA Module Using OWS - 3 Videos

  In this tutorial we demonstrate how to create an Installable DotNetNuke PA (Private Assembly) Module using Open Web Studio. A PA module is a standard module that you would install using the host menu / extensions option in DotNetNuke. Throughout the tutorial we show you how to create a basic Contacts application using Open Web Studio and then how to package the OWS application so that it can be installed as a module to any DotNetNuke installation. The videos contain: Video 1 - How to Build a Contacts and Settings OWS Module Video 2 - How to Create the DNN Installable PA Module Files Video 3 - How to Create and Test the Installable PA Module Zip File Total Time Length: 22min 46secDid 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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• Where to go from here, how to improve / learn more

  - by bExplosion

  I finished University around 4 years ago double degree in Software Eng/Comp Sci. Got my first job at a startup in my final year, was with them for 2.5 years then started my own business. So far everything is going great, lots of clients and stead work etc, but coming right out of uni and into a start up I never had any form or senior software engineer guiding my work or suggesting improvements etc... Whats the best way for me to improve & learn more? Books? MS Exams? Other? I develop in C#, ASP.NET/MVC. Update The problem isn't really with releasing products, I've released quite a few which are up and running with customers happy. It's more with quality of code, best practices, how do I know something I am code is correct, it may work but there may be ways of coding it much more efficiently or by adhering to some kind of standard Cheers for any responses! Matt

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• AdSense link units targeting better keywords?

  - by Unavailable

  I have one link unit above my navigation which targets exact keywords on what my site is about, on contrary my AdSense for content Leaderboard and Wide Skyscraper show ads that are totally opposite from my keyword, while my ctr increased for about 10 times with link unit I noticed CPC is lower also (but that was just based on one day, today is higher). Is it so bad to completely get rid of standard content ads and put link units, because this way I earn so little for that site but I think that is because smart pricing (accidental clicks on ads that my users are not interested)? I earn in whole day with about 25-35 clicks as much as keyword tool shows for only one click, my site is first for the topic? I really don't know what to do. Has anyone had similar situation or can give some advice?

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• Photobooth.js : le framework JavaScript permet d'ajouter un système de webcam à un site Web en utilisant HTML5

  Photobooth.js : le framework JavaScript permet d'ajouter un système de webcam à un site Web en utilisant HTML5 Le HTML5, le futur standard du Web vient de révéler une fois de plus l'une de ses nombreuses facettes. Un développeur indépendant a exploité les nouveautés du langage pour mettre au point Photobooth.js, une bibliothèque open source en JavaScript qui permet d'intégrer dans un site Web assez aisément un système de prise de photo par webcam. Photobooth s'appuie sur la méthode getUserMedia du framework audio et vidéo open source WebRTC, qui est actuellement en cours de standardisation par le W3C comme une partie du HTML5. Photobooth.js permet de prendre dire...

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• Extracting, Transforming, and Loading (ETL) Process

  The process of Extracting, Transforming, and Loading data in to a data warehouse is called Extract Transform Load (ETL) process.  This process can be used to obtain, analyze, and clean data from various data sources so that it can be stored in a uniform manner within a data warehouse. This data can then be used by various business intelligence processes to provide an organization with more of an in depth analysis of the current state of the company and where it is heading. A standard ETL process that might be used by a health care system may include importing all of their patients names, diagnoses and prescriptions in to a unified data warehouse so that trends can be spotted in regards to outbreaks like the flu and also predict potential illness that a patient might be affected by based on other patients with similar symptoms.

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• Where should I put a method that returns a list of active entries of a table?

  - by darga33

  I have a class named GuestbookEntry that maps to the properties that are in the database table named "guestbook". Very simple! Originally, I had a static method named getActiveEntries() that retrieved an array of all GuestbookEntry objects. Each row in the guestbook table was an object that was added to that array. Then while learning how to properly design PHP classes, I learned some things: Static methods are not desirable. Separation of Concerns Single Responsibility Principle If the GuestbookEntry class should only be responsible for managing single guestbook entries then where should this getActiveEntries() method most properly go? Update: I am looking for an answer that complies with the SOLID acronym principles and allows for test-ability. That's why I want to stay away from static calls/standard functions. DAO, repository, ...? Please explain as though your explanation will be part of "Where to Locate FOR DUMMIES"... :-)

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• Are these interview questions too difficult for entry-level C++ positions?

  - by Banana

  I recently had a few interviews for programming jobs within the financial industry. I am looking for entry-level positions as I specify in the cover letter. However I am usually asked questions such as: - all two-letters commands you know in unix - representation of float/double numbers (ieee standard) - segmentation fault memory dump, and related issues - all functions you know to convert string to integer (not just atoi) - how to avoid virtual tables - etc.. Is that the custom? Because I don't think this kind of questions make sense for someone willing to get an entry-level job. Is it totally crazy to think that they should ask more conceptual questions? This is beginning to driving me nuts, honestly. Thanks

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