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• Maximizing the Value of Software

  - by David Dorf

  A few years ago we decided to increase our investments in documenting retail processes and architectures.  There were several goals but the main two were to help retailers maximize the value they derive from our software and help system integrators implement our software faster.  The sale is only part of our success metric -- its actually more important that the customer realize the benefits of the software.  That's when we actually celebrate. This week many of our customers are gathered in Chicago to discuss their successes during our annual Crosstalk conference.  That provides the perfect forum to announce the release of the Oracle Retail Reference Library.  The RRL is available for free to Oracle Retail customers and partners.  It contains 1000s of hours of work and represents years of experience in the retail industry.  The Retail Reference Library is composed of three offerings: Retail Reference Model We've been sharing the RRM for several years now, with lots of accolades.  The RRM is a set of business process diagrams at varying levels of granularity. This release marks the debut of Visio documents, which should make it easier for retailers to adopt and edit the diagrams.  The processes represent an approximation of the Oracle Retail software, but at higher levels they are pretty generic and therefore usable with other software as well.  Using these processes, the business and IT are better able to communicate the expectations of the software.  They can be used to guide customization when necessary, and help identify areas for optimization in the organization. Retail Reference Architecture When embarking on a software implementation project, it can be daunting to start from a blank sheet of paper.  So we offer the RRA, a comprehensive set of documents that describe the retail enterprise in terms of logical architecture, physical deployments, and systems integration.  These documents and diagrams describe how all the systems typically found in a retailer enterprise work together.  They serve as a way to jump-start implementations using best practices we've captured over the years. Retail Semantic Glossary Have you ever seen two people argue over something because they're using misaligned terminology?  Its a huge waste and happens all the time.  The Retail Semantic Glossary is a simple application that allows retailers to define terms and metrics in a centralized database.  This initial version comes with limited content with the goal of adding more over subsequent releases.  This is the single source for defining key performance indicators, metrics, algorithms, and terms so that the retail organization speaks in a consistent language. These three offerings are downloaded from MyOracleSupport separately and linked together using the start page above.  Everything is navigated using a Web browser.  See the Oracle Retail Documentation blog for more details.

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• When does a "scripter" become a "programmer"?

  - by makerofthings7

  Is there a difference between 'scripters' and 'programmers'? What is the dividing line between scripters and programmers? Perhaps all scripters be considered to be a programmer. If not all scripters can fall into the same camp, what about those people who use external objects such as COM objects, Win32's, etc. via an interop library? As far as script languages I'm thinking of are (but not limited to) perl, bash, javascript, powershell, and batch files.

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• Best C++ containers for UI in Games.

  - by Vijayendra

  I am writing some UI stuff for my games in C++. Basically its a very common problem, but I dont know the best answer yet. Suppose inside my UI Library I have a view class which renders 2D/3D scene. This view can contain many subviews. I needs a container which allows me to iterate over these views fast and also insert/delete subviews. I am not sure which container is best for the job - list, vector or something else?

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• what do i have to do when using libraries with BSD license?

  - by androidmaster

  I am making a game using Lwjgl and this is their license. What I don't understand is what must I do? I plan on making a game and distributing it, not the source code just the .jar file and maybe sell it for a few dollars. It said that I must retain the copyright, so would that mean I must include the doc folder that the library comes with in the jar or do I have to make something in-game like credits and say "made with lwjgl"?

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• What are the most known arbitrary precision arithmetic implementation approaches?

  - by keykeeper

  I'm going to write a class library for .NET which provide an implementation of arbitrary precision arithmetic for integer, rational and maybe complex numbers. What best known approaches should I become familiar with? I tried to start with Knuth's TAOCP Vol.2 (Seminumerical Algorithms, Chapter 4 – Arithmetic) but it's too complicated. At least I couldn't get the ideas in a relatively short period of time.

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• EntLib 5 install gets error “The system administrator has set policies to prevent this installation.

  - by Stan Spotts

  I got this when I tried to install the source code on Windows Server 2008 R2, and this was an issue with EntLib 4.0 as well. The solution is the same now as it was then, but since I had a new OS install I didn't recreate the fix. I had to add a registry key: DisableMSI REG_DWORD value 0 It goes here: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer The description for this key is here: http://msdn.microsoft.com/en-us/library/aa368304(VS.85).aspx

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• Using NumPy arrays as 2D mathematical vectors?

  - by CorundumGames

  Right now I'm using lists as position, velocity, and acceleration vectors in my game. Is that a better option than using NumPy's arrays (not the standard library's) as vectors (with float data types)? I'm frequently adding vectors and changing their values directly, then placing the values in these vectors into a Pygame Rect. The vector is used for position (because Rects can't hold floats, so we can't go "between" pixels), and the Rect is used for rendering (because Pygame will only take in Rects for rendering positions).

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• Should I have a separate method for Update(), Insert(), etc., or have a generic Query() that would be able to handle all of these?

  - by Prayos

  I'm currently trying to write a class library for a connection to a database. Looking over it, there are several different types of queries: Select From, Update, Insert, etc. My question is, what is the best practice for writing these queries in a C# application? Should I have a separate method for each of them(i.e. Update(), Insert()), or have a generic Query() that would be able to handle all of these? Thanks for any and all help!

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• How do I fix error building package on ppa, uses tweepy/quickly

  - by qw3rty_rocks

  I'm building an application that uses tweepy (a python library) and when I build it on my local machine it works fine. When I submit it to launchpad though, it sent me a log which has this error: ERROR: Python module tweepy not found. I found a ppa python-tweepy on launchpad. So how do I fix this error. The log from launchpad is here: https://launchpadlibrarian.net/109066317/buildlog_ubuntu-precise-i386.quicknote_12.07_FAILEDTOBUILD.txt.gz

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• Genetic Considerations in User Interface Design

  - by John Paul Cook

  There are several different genetic factors that are highly relevant to good user interface design. Color blindness is probably the best known. But did you know about motion sickness and epilepsy? We’ve been discussing how genetic factors should be considered in user interface design in one of my classes at Vanderbilt University School of Nursing. According to the National Library of Medicine, approximately 8% of males and 0.5% of females have red-green color discrimination problems with the most...(read more)

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• What is the Coded UI feature of VS2010 and VS2012?

  - by TATWORTH

  A question recently arose as to what is coded UI? It is a feature of the ultimate and premium versions of Visual Studio 2012 (and 2010).It is described as "Automate user interface tests to validate application UI"Here are some useful links about it:http://codedui101.blogspot.co.uk/2011/07/what-is-codedui.htmlhttp://msdn.microsoft.com/en-us/vstudio/ee957688.aspxhttp://msdn.microsoft.com/en-us/library/dd286726.aspxhttp://www.microsoft.com/visualstudio/eng/products/comparehttp://www.dotnetcurry.com/ShowArticle.aspx?ID=798http://channel9.msdn.com/Blogs/kmcgrath/Introduction-to-Creating-Coded-UI-Tests-with-Visual-Studio-2010

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• C++11 Tidbits: Decltype (Part 2, trailing return type)

  - by Paolo Carlini

  Following on from last tidbit showing how the decltype operator essentially queries the type of an expression, the second part of this overview discusses how decltype can be syntactically combined with auto (itself the subject of the March 2010 tidbit). This combination can be used to specify trailing return types, also known informally as "late specified return types". Leaving aside the technical jargon, a simple example from section 8.3.5 of the C++11 standard usefully introduces this month's topic. Let's consider a template function like: template <class T, class U> ??? foo(T t, U u) { return t + u; } The question is: what should replace the question marks? The problem is that we are dealing with a template, thus we don't know at the outset the types of T and U. Even if they were restricted to be arithmetic builtin types, non-trivial rules in C++ relate the type of the sum to the types of T and U. In the past - in the GNU C++ runtime library too - programmers used to address these situations by way of rather ugly tricks involving __typeof__ which now, with decltype, could be rewritten as: template <class T, class U> decltype((*(T*)0) + (*(U*)0)) foo(T t, U u) { return t + u; } Of course the latter is guaranteed to work only for builtin arithmetic types, eg, '0' must make sense. In short: it's a hack. On the other hand, in C++11 you can use auto: template <class T, class U> auto foo(T t, U u) -> decltype(t + u) { return t + u; } This is much better. It's generic and a construct fully supported by the language. Finally, let's see a real-life example directly taken from the C++11 runtime library as implemented in GCC: template<typename _IteratorL, typename _IteratorR> inline auto operator-(const reverse_iterator<_IteratorL>& __x, const reverse_iterator<_IteratorR>& __y) -> decltype(__y.base() - __x.base()) { return __y.base() - __x.base(); } By now it should appear be completely straightforward. The availability of trailing return types in C++11 allowed fixing a real bug in the C++98 implementation of this operator (and many similar ones). In GCC, C++98 mode, this operator is: template<typename _IteratorL, typename _IteratorR> inline typename reverse_iterator<_IteratorL>::difference_type operator-(const reverse_iterator<_IteratorL>& __x, const reverse_iterator<_IteratorR>& __y) { return __y.base() - __x.base(); } This was guaranteed to work well with heterogeneous reverse_iterator types only if difference_type was the same for both types.

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• CVE-2009-2042 Information Exposure vulnerability in libpng

  - by chandan

  CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2009-2042 Information Exposure vulnerability 4.3 PNG reference library (libpng) Solaris 10 SPARC: 137080-04 X86: 137081-04 Solaris 9 SPARC: 139382-03 X86: 139383-03 Solaris 8 SPARC: 114816-04 X86: 114817-04 This notification describes vulnerabilities fixed in third-party components that are included in Sun's product distribution.Information about vulnerabilities affecting Oracle Sun products can be found on Oracle Critical Patch Updates and Security Alerts page.

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• Nashorn in the Twitterverse

  - by jlaskey

  I have been following how often Nashorn has been showing up on the net.  Nashorn got a burst of tweets when we announced Project Nashorn and I was curious how Nashorn was trending per day, maybe graph the result.  Counting tweets manually seemed mindless, so why not write a program to do the same. This is where Nashorn + Java came shining through.  There is a very nice Java library out there called Twitter4J https://github.com/yusuke/twitter4j that handles all things Twitter.  After running bin/getAccessToken.sh to get a twitter4j.properties file with personal authorization, all I had to do to run my simple exploratory app was; nashorn -cp $TWITTER4J/twitter4j-core-3.0.1.jar GetHomeTimeline.js The content of GetHomeTimeline.js is as follows; var twitter4j      = Packages.twitter4j; var TwitterFactory = twitter4j.TwitterFactory; var Query          = twitter4j.Query; var twitter = new TwitterFactory().instance; var query   = new Query("nashorn OR nashornjs"); query.count = 100; do {     var result = twitter.search(query);     var tweets = result.tweets;     for each (tweet in tweets) {         print("@" + tweet.user.screenName + "\t" + tweet.text);     } } while (query = result.nextQuery()); How easy was that?  Now to hook it up to the JavaFX graphing library... 

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• DeveelDB

  - by csharp-source.net

  DeveelDB is a full embeddedable SQL database management system for .NET and Mono frameworks, managing small to large amount of data with a wide support for complex types. Some of the key features of this project are: - the strong transactional system for isolated operations an efficient memory management to reduce the impact on the runtime - its open architecture, to permit development of modules and features - a small footprint: the core library is ~1Mb

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• Experiments in Big Data Visualization on Maps

  Experiments in Big Data Visualization on Maps Brendan Kenny and Mano Marks continue their series on using the CanvasLayer library and HTML5 APIs to visualize large amounts of data on top of Google maps. This week they look at loading Shapefiles and KML directly in the browser and using WebGL to render their content over a map. From: GoogleDevelopers Views: 0 1 ratings Time: 00:00 More in Science & Technology

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• CloudSeeder: CLR Stored Procedures For Creating CPU Pressure

  - by Adam Machanic

  Sometimes, in the interest of testing various scenarios that your server might encounter, it's useful to be able to quickly simulate some condition or another. I/O, memory, CPU pressure, and so on. This latter one is something I've been playing with a lot recently. CPU pressure in SQL Server creates all sorts of interesting side-effects , such as exacerbating waits and making various other conditions much easier to reproduce. In order to make this simpler, I've created the attached CLR library. This...(read more)

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• Batch normalize audio volume on .ogg-files

  - by Embridioum

  Are there any simple tools to normalize an .ogg-library of 10'000+ songs so that the volume is the same throughout all songs? Terminal or GUI doesn't matter, it only need to be simple. One caveat though, I don't want soft interludes/intermissions and ballads blown out of proportion. Preferably the process should find the overall gain of the album (I have all my CD's ripped into separate folders) and normalize the level thereafter.

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• Parallel task in C# 4.0

  - by Jalpesh P. Vadgama

  In today’s computing world the world is all about Parallel processing. You have multicore CPU where you have different core doing different work parallel or its doing same task parallel. For example I am having 4-core CPU as follows. So the code that I write should take care of this.C# does provide that kind of facility to write code for multi core CPU with task parallel library. We will explore that in this post. Read More

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• Download the Visual Studio 2010 Trial

  Visual Studio 2010 Professional simplifies building standards-based web applications with improved AJAX frameworks, core IntelliSense support for JavaScript, and the integration of the popular jQuery framework, an open-source JavaScript library.

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• Display system information

  - by Robottinosino

  I would like output akin to that of OSX's system_profiler (https://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man8/system_profiler.8.html) On Ubuntu, I have to string a few utilities togeter: uname -a, lshw, ifconfig, etc... and then extract the list of installed software packages... Is there a single, simple facade to getting human readable system info from the CLI?

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• c++ most used libraries [on hold]

  - by Basaa

  I'm trying to find out whether or not I want to switch from Java to c++ for my OpenGL game programming. I now have setup a test project in VS 11 professional, with GLUT. I created my windows with GLUT, and I can render OpenGL primitives without any problems. Now my question: What library(s) is/are used mostly in the indie/semi professional industry for using OpenGL in c++? With 'using OpenGL' I mean: Creating and managing an OpenGL window Actually using the OpenGL API Handling user-input (keyboard/mouse)

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• Draw images with warped triangles on a web server [migrated]

  - by epologee

  The scenario The Flash front end of my current project produces images that a web server needs to combine into a video. Both frame-rate and frame-resolution are sizeable enough that sending an image sequence to the back end is not feasible (in both time and client bandwidth). Instead, we're trying to recreate the image drawing on the back end as well. Correct and slow, or incorrect and fast The problem is that this involves quite a bit of drawing textured triangles, and two solutions we found in Python (here and there) are so inefficient, that the drawing takes about 60 seconds per frame, resulting in a whopping 7,5 hours of processing time for a 30 second clip. Unacceptable. When using a PHP-module to send commands to ImageMagick for image manipulation, the whole process is super fast (tenths of a second per frame), but ImageMagick seems to be unable to draw triangles the way we do it in the front end, so the final results do not match. Unacceptable. What I'm asking here, is if there's someone who would know a way to solve this issue, by any means necessary that would run on a web server. Warping an image Let me explain the process of the front end: Perform a Delaunay calculation on points in an image to get an evenly distributed mesh of triangles. Offset the points/vertices in the mesh, distorting or warping the image. Draw the warped triangles on a new bitmap. We can send the results (coordinates) of steps 1 and 2 to the back end, to then draw the warped triangles and save it to an image on disk (or append as a frame to the video). But that last step is what I need help with. The Question Is there an alternative to ImageMagick that can draw triangles in a bitmap? Is there some other library, like a C library, that would allow us to do this? Or could we achieve this effect more easily by switching back end technologies, like Ruby? (.Net and Java are, unfortunately, not really options right now) Many thanks. EP. P.S. I'd appreciate re-tagging efforts, I don't quite know what labels to put on this question. Thanks!

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• PHP - Internal APIs/Libraries - What makes sense?

  - by Mark Locker

  I've been having a discussion lately with some colleagues about the best way to approach a new project, and thought it'd be interesting to get some external thoughts thrown into the mix. Basically, we're redeveloping a fairly large site (written in PHP) and have differing opinions on how the platform should be setup. Requirements: The platform will need to support multiple internal websites, as well as external (non-PHP) projects which at the moment consist of a mobile app and a toolbar. We have no plans/need in the foreseeable future to open up an API externally (for use in products other than our own). My opinion: We should have a library of well documented native model classes which can be shared between projects. These models will represent everything in our database and can take advantage of object orientated features such as inheritance, traits, magic methods, etc. etc. As well as employing ORM. We can then add an API layer on top of these models which can basically accept requests and route them to the appropriate methods, translating the response so that it can be used platform independently. This routing for each method can be setup as and when it's required. Their opinion: We should have a single HTTP API which is used by all projects (internal PHP ones or otherwise). My thoughts: To me, there are a number of issues with using the sole HTTP API approach: It will be very expensive performance wise. One page request will result in several additional http requests (which although local, are still ones that Apache will need to handle). You'll lose all of the best features PHP has for OO development. From simple inheritance, to employing the likes of ORM which can save you writing a lot of code. For internal projects, the actual process makes me cringe. To get a users name, for example, a request would go out of our box, over the LAN, back in, then run through a script which calls a method, JSON encodes the output and feeds that back. That would then need to be JSON decoded, and be presented as an array ready to use. Working with arrays, as appose to objects, makes me sad in a modern PHP framework. Their thoughts (and my responses): Having one method of doing thing keeps things simple. - You'd only do things differently if you were using a different language anyway. It will become robust. - Seeing as the API will run off the library of models, I think my option would be just as robust. What do you think? I'd be really interested to hear the thoughts of others on this, especially as opinions on both sides are not founded on any past experience.

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• GPL licensed software installed on commercial hardware

  - by Alexander Reshytko

  Do vendors need to provide sources, at the customer's request, for GPL licensed software installed on the hardware they sell? For example, a vendor sells an IPTV box and pre-installs some proprietary software product which is linked with some GPLed library. As a consequence, the software becomes GPLed itself. Does the vendor need to provide the source code for it? The vendor doesn't sell that software, he sells hardware.

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