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• Any suggestions how it would be good to promote software in a small company ?

  - by Derfder

  Ok, I know if I am Red hat or other giant and offer some support etc. I can be profitable, in fact, Red Hat is doing quite well. However, what about a small company where I create a small program. e.g. an instant messenger for a windows or linux (just as an illustration) and I want to sell it. But how can I sell it if it is free and everybody can download it? Any advice? I like the idea of FSF by Richard Stallman, however I am missing the way how to sell my software under GNU/GPL licence. Any advice, how can I solve this problem? Any profitable small business software developers around with their opinion? Any links or names of small companies taht I can look at and study their model of business?

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• How to unmount a virtual cd/dvd in Ubuntu 11.1o

  - by P J Reil

  I'm new to Ubuntu 11.10 and have absolutely no idea what I'm doing. I don't now how but in downloading and fooling around with a virtual cd/dvd program I seem to have inadvertently installed it. I had to shut down my computer for a while and when I re booted it all my files and my setup was gone. I have a brand new 11.10 setup with all the programs installed that I originally had but no files or bookmarks etc.. I'm not sure, but I think I'm running in a virtual cd/dvd. I don't know how to determine if I am or not and can't boot up in my original setup. Can anyone help me?

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• C code - ls system command not showing bash colors

  - by m0atz

  I've just been fooling around with some code in C, an example of a really basic program is as follows which just, obviously, lists the directories using the ls system command. #include <stdio.h> int main (void) { system("ls -l -d */"); printf("I've just listed the directories :-)\n"); return 0; } This runs fine, but it shows the ls output in monochrome, whereas Bash would output the list using colors for the directories (or files if I included files). How can I make my C code use the bash colors? Thanks

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• Parsing stdout with custom format or standard format?

  - by linquize

  To integrate with other executables, a executable may launch another executable and capture its output from stdout. But most programs writes the output message to stdout in custom format and usually in human readable format. So it requires the system integrator to write a function to parse the output, which is considered trouble and the parser code may be buggy. Do you think this is old fashioned? Most Unix-style programs do that. Very few programs write to stdout in standard format such as XML or JSON, which is more modern. Example: Veracity (DVCS) writes JSON to stdout. Should we switch to use modern formats? For a console program, human readable or easy parsable: which is more important ?

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• Why should I use List<T> over IEnumerable<T>?

  - by Rowan Freeman

  In my ASP.net MVC4 web application I use IEnumerables, trying to follow the mantra to program to the interface, not the implementation. Return IEnumerable(Of Student) vs Return New List(Of Student) People are telling me to use List and not IEnumerable, because lists force the query to be executed and IEumerable does not. Is this really best practice? Is there any alternative? I feel strange using concrete objects where an interface could be used. Is my strange feeling justified?

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• Relicense BSD 2/3-clause code to GPL

  - by Brecht Machiels

  Suppose I release some source code under the new BSD license. Is it allowed for someone else to take this code, make modifications to it and distribute it under the terms of the GPL? From Wikipedia: Many of the most common free software licenses, such as the original MIT/X license, BSD licenses (in the current 2-clause form), and the LGPL, are "GPL-compatible". That is, their code can be combined with a program under the GPL without conflict (the new combination would have the GPL applied to the whole). However, some free/open source software licenses are not GPL-compatible. I'm assuming this implies that one can relicense new-BSD licensed code to GPL?

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• How to create portable applications?

  - by alan

  In Ubuntu can you create a portable application and have it work on an os like suse 10.x via USB stick? I'm not sure if this can be done or not, how to do it or if it would be compatible, any advice is greatly welcomed. I need to make a portable version of Stellarium and have it work in Suse 10.x. I haven't been able portable linux versions. I'm pretty sure there can be portable versions of applications since you can run a program like TOR on it.

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• Ubuntu 10.10 freezes

  - by albert green

  Hi, I have the following configuration: CPU: amd athlon 64bit Motherboard: Phoenix with awardBIOS v6.0 APIC mode = disabled Video card: GeForce 5500 Sound card: soundblaster live 24bit RAM: 1.5GB Partitions: ext3 32GB where I installed Ubuntu. Swap 500MB. 180GB Fat32 unmounted. contains data only. I installed Ubuntu 10.10 and used the "Additional driver" program to get the nVidia proprietary drivers. The system works for sometime and randomly freezes. The mouse and keyboard are not responding and I am not able to do a SSH. The only solution is pressing the power button. I tried Kubuntu 10.10 and 32/64-bits versions as well. There is nothing in the logs to suggest what the reason might be. Any help will be appreciated. Thanks in advance.

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• Has anyone used RemObjects' Hydra to mix a large Delphi project with new C# additions?

  - by robsoft

  (Hopefully this is deemed suitable for Programmers, not StackOverflow - I could imagine it getting closed at SO because there's no obvious 'right' answer.) We have a large Delphi 2007 VCL project that uses things like DBXpress, Report Builder, DevExpress and TMS components (both visual and non-visual) etc. For reasons I won't bore you with, the company would like to start adding new modules to the program using .Net (via C# in particular). Rewriting from scratch isn't an option and given the heavy use of Report Builder and various other bits of Delphi-specific 3rd party code, I suspect that using something like TurnSharp to regenerate a C# project wouldn't work well either. Ideally we want to keep our Win32 VCL Delphi code but add new modules (plug-ins, sections of contained functionality like wizards etc) via C#. So we're considering RemObjects' Hydra, and in the next few weeks will probably have a go at evaluating it on a smaller-but-representative project first. I wondered if anyone had experience of doing this kind of thing with Hydra...?

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• What are some recommended video lectures for a non-CS student to prepare for the GRE CS subject test?

  - by aristos

  Well the title kinda explains all there is to explain. I'm a non-cs student and was preparing to apply PhD programs in applied mathematics. But for my senior thesis I've been reading lots of machine learning and pattern recognition literature and enjoying it a lot. I've taken lots of courses with statistics and stochastics content, which I think, would help me if I get accepted to a program with ML focus, but there are only two CS courses -introduction to programming- in my transcript and therefore I decided to take the CS subject test to increase my chances. Which courses do you think would be most essential to have a good result from CS subject test? I'm thinking of watching video lectures of them, so do you have any recommendations?

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• JustCode Provides Reflector Alternative

  - by Joe Mayo

  If you've been a loyal Reflector user, you've probably been exposed to the debacle surrounding RedGate's decision to no longer offer a free version.  Since then, the race has begun for a replacement with a provider that would stand by their promises to the community.  Mono has an ongoing free alternative, which has been available for a long time.  However, other vendors are stepping up to the plate, with their own offerings. If Not Reflector, Then What? One of these vendors is Telerik.  In their recent Q1 2011 release of JustCode, Telerik offers a decompilation utility rivaling what we've become accustomed to in Reflector.  Not only does Telerik offer a usable replacement, but they've (in my opinion), produced a product that integrates more naturally with visual Studio than any other product ever has.  Telerik's decompilation process is so easy that the accompanying demo in this post is blindingly short (except for the presence of verbose narrative). If you want to follow along with this demo, you'll need to have Telerik JustCode installed.  If you don't have JustCode yet, you can buy it or download a trial at the Telerik Web site . A Tall Tale; Prove It! With JustCode, you can view code in the .NET Framework or any other 3rd party library (that isn't well obfuscated).  This demo depends on LINQ to Twitter, which you can download from CodePlex.com and create a reference or install the package online as described in my previous post on NuGet.  Regardless of the method, you'll have a project with a reference to LINQ to Twitter.  Use a Console Project if you want to follow along with this demo. Note:  If you've created a Console project, remember to ensure that the Target Framework is set to .NET Framework 4.  The default is .NET Framework 4 Client Profile, which doesn't work with LINQ to Twitter.  You can check by double-clicking the Properties folder on the project and inspecting the Target Framework setting. Next, you'll need to add some code to your program that you want to inspect. Here, I add code to instantiate a TwitterContext, which is like a LINQ to SQL DataContext, but works with Twitter: var l2tCtx = new TwitterContext(); If you're following along add the code above to the Main method, which will look similar to this: using LinqToTwitter; namespace NuGetInstall { class Program { static void Main(string[] args) { var l2tCtx = new TwitterContext(); } } } The code above doesn't really do anything, but it does give something that I can show and demonstrate how JustCode decompilation works. Once the code is in place, click on TwitterContext and press the F12 (Go to Definition) key.  As expected, Visual Studio opens a metadata file with prototypes for the TwitterContext class.  Here's the result: Opening a metadata file is the normal way that Visual Studio works when navigating to the definition of a type where you don't have the code.  The scenario with TwitterContext happens because you don't have the source code to the file.  Visual Studio has always done this and you can experiment by selecting any .NET type, i.e. a string type, and observing that Visual Studio opens a metadata file for the .NET String type. The point I'm making here is that JustCode works the way Visual Studio works and you'll see how this can make your job easier. In the previous figure, you only saw prototypes associated with the code. i.e. Notice that the default constructor is empty.  Again, this is normal because Visual Studio doesn't have the ability to decompile code.  However, that's the purpose of this post; showing you how JustCode fills that gap. To decompile code, right click on TwitterContext in the metadata file and select JustCode Navigate -> Decompile from the context menu.  The shortcut keys are Ctrl+1.  After a brief pause, accompanied by a progress window, you'll see the metadata expand into full decompiled code. Notice below how the default constructor now has code as opposed to the empty member prototype in the original metadata: And Why is This So Different? Again, the big deal is that Telerik JustCode decompilation works in harmony with the way that Visual Studio works.  The navigate to functionality already exists and you can use that, along with a simple context menu option (or shortcut key) to transform prototypes into decompiled code. Telerik is filling the the Reflector/Red Gate gap by providing a supported alternative to decompiling code.  Many people, including myself, used Reflector to decompile code when we were stuck with buggy libraries or insufficient documentation.  Now we have an alternative that's officially supported by a company with an excellent track record for customer (developer) service, Telerik.  Not only that, JustCode has several other IDE productivity tools that make the deal even sweeter. Joe

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• View/ViewModel Interaction - Bindings, Commands and Triggers

  It looks like I have a set of posts on ViewModel, aka MVVM, that have organically emerged into a series or story of sorts. Recently, I blogged about The Case for ViewModel, and another on View/ViewModel Association using Convention and Configuration, and a long while back now, I posted an Introduction to the ViewModel Pattern as I was myself picking up this pattern, which has since become the natural way for me to program client applications. This installment adds to this on-going series. I've...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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• View/ViewModel Interaction - Bindings, Commands and Triggers

  It looks like I have a set of posts on ViewModel, aka MVVM, that have organically emerged into a series or story of sorts. Recently, I blogged about The Case for ViewModel, and another on View/ViewModel Association using Convention and Configuration, and a long while back now, I posted an Introduction to the ViewModel Pattern as I was myself picking up this pattern, which has since become the natural way for me to program client applications. This installment adds to this on-going series. I've...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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• Free online service to track software issues from users?

  - by Shimmy

  Hi! I just deployed a program, and I am looking for a FREE ONLINE service that will allow my users to enter new issues and I will be able to respond with comments etc. Doesn't have to be related to code etc. I want it to be private (i.e. only me and my users can view/edit entries. Update: I think I am misunderstood, I am looking for some private service that works like Microsoft Connect or Uservoice - no code involved at all, just a ilst of bugs / feature requests and it's status, ready to use.

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• Method flags as arguments or as member variables?

  - by Martin

  I think the title "Method flags as arguments or as member variables?" may be suboptimal, but as I'm missing any better terminology atm., here goes: I'm currently trying to get my head around the problem of whether flags for a given class (private) method should be passed as function arguments or via member variable and/or whether there is some pattern or name that covers this aspect and/or whether this hints at some other design problems. By example (language could be C++, Java, C#, doesn't really matter IMHO): class Thingamajig { private ResultType DoInternalStuff(FlagType calcSelect) { ResultType res; for (... some loop condition ...) { ... if (calcSelect == typeA) { ... } else if (calcSelect == typeX) { ... } else if ... } ... return res; } private void InteralStuffInvoker(FlagType calcSelect) { ... DoInternalStuff(calcSelect); ... } public void DoThisStuff() { ... some code ... InternalStuffInvoker(typeA); ... some more code ... } public ResultType DoThatStuff() { ... some code ... ResultType x = DoInternalStuff(typeX); ... some more code ... further process x ... return x; } } What we see above is that the method InternalStuffInvoker takes an argument that is not used inside this function at all but is only forwarded to the other private method DoInternalStuff. (Where DoInternalStuffwill be used privately at other places in this class, e.g. in the DoThatStuff (public) method.) An alternative solution would be to add a member variable that carries this information: class Thingamajig { private ResultType DoInternalStuff() { ResultType res; for (... some loop condition ...) { ... if (m_calcSelect == typeA) { ... } ... } ... return res; } private void InteralStuffInvoker() { ... DoInternalStuff(); ... } public void DoThisStuff() { ... some code ... m_calcSelect = typeA; InternalStuffInvoker(); ... some more code ... } public ResultType DoThatStuff() { ... some code ... m_calcSelect = typeX; ResultType x = DoInternalStuff(); ... some more code ... further process x ... return x; } } Especially for deep call chains where the selector-flag for the inner method is selected outside, using a member variable can make the intermediate functions cleaner, as they don't need to carry a pass-through parameter. On the other hand, this member variable isn't really representing any object state (as it's neither set nor available outside), but is really a hidden additional argument for the "inner" private method. What are the pros and cons of each approach?

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• Do you know a good html mailing list management software with admin levels?

  - by SirG

  I'm basically looking for a program/app/script (can be commercial) which I can ideally install on a windows server (we can run asp, asp.net php mssql) we have different groups of people who send newsletters to web members, I want to bring it all into one app which I can monitor and control. Ideally it would be able to create html newsletters, (with some templates) track emails and click throughs. Manage email lists subscribe/unsubscribes. And importantly have different levels of admin, so a newsletter creator could log in and create and send off an email, it goes into a queue where a communications editor can have an overview of all newsletters and approve the sending of the emails or edit them before they are sent off. before I start coding something up myself I thought I'd ask if anyone has any advice! Cheers!

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• The practical cost of swapping effects

  - by sebf

  I use XNA for my projects and on those forums I sometimes see references to the fact that swapping an effect for a mesh has a relatively high cost, which surprises me as I thought to swap an effect was simply a case of copying the replacement shader program to the GPU along with appropriate parameters. I wondered if someone could explain exactly what is costly about this process? And put, if possible, 'relatively' into context? For example say I wanted to use a short shader to help with picking, I would: Change the effect on every object, calculting a unique color to identify it and providing it to the shader. Draw all the objects to a render target in memory. Get the color from the target and use it to look up the selected object. What portion of the total time taken to complete that process would be spent swapping the shaders? My instincts would say that rendering the scene again, no matter how simple the shader, would be an order of magnitude slower than any other part of the process so why all the concern over effects?

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• building a game for different resoulution phones

  - by Jason

  Hi, I am starting some tests for building a game on the android program. So far everything is working and seems nice. However I do not understand how to make sure my game looks correct on all phones as the all will have slightly different screen ratios (and even very different on some odd phones) What I am doing right now is making a view frustrum ( could also be ortho ) which I set to go from -ratio to +ratio ( as I have seen on many examples) however this causes my test shape to be stretched and sometimes cut off by the edge of the screen. I am tilting my phone to landscape to do my tests ( a bit extreame) but it should still render correctly if I have dome things right. Should I be scaling by some ratio before drawing or something? An example would be greatly apriciated PS I am doing a 2d game

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• The Best Websites for Creating and Sending Free eCards

  - by Lori Kaufman

  With the holiday season upon us, it’s time to pull out the holiday card list and get writing. However, how would you like to save some money this year and also help save the environment? We’ve assembled a list of websites that allow you to create electronic cards (eCards) you can send (using email, Facebook, or other electronic delivery methods) to friends and family for the holidays, or for any other occasion. Each site listed provides free eCards you can send or has a free option, as well as a paid option. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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• How to create an auto-grader in and for Python

  - by recluze

  I'm trying to create an auto-grader for one of my beginning programming courses for python. From my online search, I've come to know that it is effectively a unit test framework that tests the student's code rather than production code but I'm not really sure how to structure the flow of the program. Can anyone please provide a strategy for submission of code by students and automating the whole process of marking? For instance, how would the student code be submitted and then stored/structured on disk, how would the grades be stored/reported? I'm only looking for a broad strategy and will try on my own to fill in the blanks. (I asked this on stockoverflow.com initially but it's considered as off-topic and I was suggested to ask here.)

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• Good alternative to NetLimiter?

  - by Harsh

  There is a program NetLimiter for windows. While I was using Windows it was very useful for me to find out the IP address of the person who was downloading from me, or to know IP address of any person on LAN who was using DC++ with some nick. And after that I can easily know the computer name of that person using nbtstat. I was wondering if there is any tool for Ubuntu using which I can find out the IP address of person who is downloading from me or from whom I am downloading on LAN. I am on university LAN and we are using PtokaX and DC++ for file sharing on LAN. people sometimes put some offencive stuff on open chat on DC++ using some Nick and I don't know how to trace them while I am using Ubuntu.

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• How to avoid getting carried away with details?

  - by gablin

  When I program, I often get too involved with details. There might be some little thing that doesn't do exactly what I want it to, or maybe there's some little feature I want to add. Either way, none are really essential to the application - it's just a minor niusance (if any). However, when trying to fix it, I may happen to spend way more time on it than I planned, and there are things much more important that I should be doing instead of dealing with this little detail. What can I do to avoid getting carried away with details, when there's more essential things that need doing? (I didn't know how to tag this question, so feel free to add whatever appropriate tags that are missing.)

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• What would you do if your client required you not to use object-oriented programming?

  - by gunbuster363

  Would you try to persuade your client that using object-oriented programming is much cleaner? Or would you try to follow what he required and give him crappy code? Now I am writing a program to simulate the activity of ants in a grid. The ant can move around, pick up things and drop things. The problem is while the action of the ants and the positions of each ant can be tracked by class attributes easily (and we can easily create many instances of such ants) my client said that since he has a background in functional programming he would like the simulation to be made using functional programming. What would you do?

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• Why does my CD Tray keep popping open?

  - by Anton

  I have Ubuntu server - Ubuntu 10.04.3 LTS and I can't figure out why my CD tray is opening all the time. I have looked into /var/log/auth.log, cron list and found nothing. The eject command closes tray and then it gets opened again. The server has a LAMP (Linux-Apache-MySQL-PHP) setup and I can't afford to restart it now. How can I find out who or which program is popping the tray open? Which programs can cause this behavior?

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• The Evolution of Oracle Direct EMEA by John McGann

  - by user769227

  John is expanding his Dublin based team and is currently recruiting a Director with marketing and sales leadership experience: http://bit.ly/O8PyDF Should you wish to apply, please send your CV to [email protected] Hi, my name is John McGann and I am part of the Oracle Direct management team, based in Dublin.   Today I’m writing from the Oracle London City office, right in the heart of the financial district and up to very recently at the centre of a fantastic Olympic Games. The Olympics saw individuals and teams from across the globe competing to decide who is Citius, Altius, Fortius - “Faster, Higher, Stronger" There are lots of obvious parallels between the competitive world of the Olympics and the Business environments that many of us operate in, but there are also some interesting differences – especially in my area of responsibility within Oracle. We are of course constantly striving to be the best - the best solution on offer for our clients, bringing simplicity to their management, consumption and application of information technology, and the best provider when compared with our many niche competitors.   In Oracle and especially in Oracle Direct, a key aspect of how we achieve this is what sets us apart from the Olympians.  We have long ago eliminated geographic boundaries as a limitation to what we can achieve. We assemble the strongest individuals across multiple countries and bring them together in teams focussed on a single goal. One such team is the Oracle Direct Sales Programs team. In case you don’t know, Oracle Direct EMEA (Europe Middle East and Africa) is the inside sales division in Oracle and it is where I started my Oracle career.  I remember that my first role involved putting direct mail in envelopes.... things have moved on a bit since then – for me, for Oracle Direct and in how we interact with our customers. Today, the team of over 1000 people is located in the different Oracle Direct offices around Europe – the main ones are Malaga, Berlin, Prague and Dubai plus the headquarters in Dublin. We work in over 20 languages and are in constant contact with current and future Oracle customers, using the latest internet and telephone technologies to effectively communicate and collaborate with each other, our customers and prospects. One of my areas of responsibility within Oracle Direct is the Sales Programs team. This team of 25 people manages the planning and execution of demand generation, leading the process of finding new and incremental revenue within Oracle Direct. The Sales Programs Managers or ‘SPMs’ are embedded within each of the Oracle Direct sales teams, focussed on distinct geographies or product groups. The SPMs are virtual members of the regional sales management teams, and work closely with the sales and marketing teams to define and deliver demand generation activities. The customer contact elements of these activities are executed via the Oracle Direct Sales and Business Development/Lead Generation teams, to deliver the pipeline required to meet our revenue goals. Activities can range from pan-EMEA joint sales and marketing campaigns, to very localised niche campaigns. The campaigns might focus on particular segments of our existing customers, introducing elements of our evolving solution portfolio which customers may not be familiar with. The Sales Programs team also manages ‘Nurture’ activities to ensure that we develop potential business opportunities with contacts and organisations that do not have immediate requirements. Looking ahead, it is really important that we continue to evolve our ability to add value to our clients and reduce the physical limitations of our distance from them through the innovative application of technology. This enables us to enhance the customer buying experience and to enable the Inside Sales teams to manage ever more complex sales cycles from start to finish.  One of my expectations of my team is to actively drive innovation in how we leverage data to better understand our customers, and exploit emerging technologies to better communicate with them.   With the rate of innovation and acquisition within Oracle, we need to ensure that existing and potential customers are aware of all we have to offer that relates to their business goals.   We need to achieve this via a coherent communication and sales strategy to effectively target the right people using the most effective medium. This is another area where the Sales Programs team plays a key role.

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