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• Speaking again after a long hiatus

  Gosh, it has really been long since this blog saw some action and probably need some attention (weeding, trimming, re-planting, etc) After a long hiatus, I will be speaking again at a big event in Marina Bay Sands Singapore for our Future Of Productivity Launch on the 26th May 2010, keynoted by none other than Mr CEO - Steve Ballmer himself. Incidentally, this is also to celebrate our Microsoft Singapore 20th Anniversary. Agenda is here. I will be touching base on SQL Business Intelligence (BI),...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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• What do you look for when debugging deadlocks?

  - by Michael K

  Recently I've been working on projects that heavily use threading. I think that I'm OK at designing them; use stateless design as much as possible, lock access to all resources that more than one thread needs, etc. My experience in functional programming has helped that immensely. However, when reading other people's thread code, I get confused. I am debugging a deadlock right now, and since the coding style and design are different from my personal style, I am having a difficult time seeing potential deadlock conditions. What do you look for when debugging deadlocks?

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• Sortie de Qt 4.7.2, une version de maintenance du framework et du nouvelle EDI de Nokia Qt Creator 2.1

  Sortie de Qt 4.7.2 Avec la nouvelle version de l'EDI de Nokia Qt Creator 2.1 Mise à jour du 01/03/2011, par dourouc05 Qt 4.7.2 est sorti ce jour. Ce n'est qu'une version de maintenance, avec son lot de corrections de bogues, grâce au retour utilisateur et aux contributions, depuis la sortie de la version 4.7.1, en novembre dernier. Point plus important, il marque la sortie officielle de Qt Quick, LA nouvelle fonctionnalité clé de Qt, permettant de créer très simplement des applications légères et des interfaces utilisateur. Pour mener à bien sa mission, il se base sur QML, un langage de déclaration d'interfaces, sur le module Qt Declarative et d...

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• Transitioning from Chemical engineering to software industry what to do??

  - by console cowboy

  Hello all. Currently I am in my last semester of Engineering & has made my mind to switch to software field but given my knowledge of programming limited only to C. I am confused what to do next.Currently i have two choices. Get good at C, learn Python & write some good code/Apps & increase my employability chances. Do some Java/.Net certifications to increase my employability chances? Any kind of advice/suggestion is highly welcomed. P.S:I am also good at Linux & have a above average knowledge of operating systems. P.p.s: Advice from Indian Programmers would be beneficial.

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• How much C/C++ knowledge is needed for Objective-C/iPhone development?

  - by BFree

  First, a little background. I'm a .Net developer (C#) and have over 5 years experience in both web development and desktop applications. I've been wanting to look into iPhone development for some time now, but for one reason or another always got side tracked. I finally have a potential project on the horizon, and I'm now going full steam ahead learning this stuff. My question is this: I haven't done any C/C++ programming since my schooling days, I've been living in managed land ever since. How much knowledge if any is needed to be successful as an iOS developer? Obviously memory management is something that I'll have to be conscious about (although with iOS 5 there seems to be something called ARC which should make my life easier), but what else? I'm not just talking about the C API (for example, in order to get the sin of a number, I call the sin() function), that's what Google is for. I'm talking about fundamental C/C++ idioms that the average C# developer is unaware of.

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• Setting up Developers Conference

  - by Darknight

  In our local city in the UK, there are as far as I am aware no developer conferences. I am confident that our region has many professional developers as well as many graduating students whom who really benefit from a conference. I would like to ask the following questions: What steps or advice would one take if the task was given to set up a local developers conference? What would the costing look like? (excluding building/hosting of website(s)) How would one build interest and promote this? How would I approach, Local Companies & Universities to collaborate with them? I'm not just aiming this question to users who may have experience in setting up such conferences (but are highly welcome). Rather how would you attack this if you was tasked with this?

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• installing ubuntu 10.04 over top 11.04

  - by Alex

  im looking to install 10.04 over top the 11.04 partition, it wouldnt let. keeps giving me a "root file system not found" error ever time i manually select partition. (i have a win7 partition) 11.04 popped up after upgrade that my hardware isnt supported for unity. and i cant boot into it, hangs up on purple screen right after boot menu. if anyone can post a link to a how to guide or put it on here, would be great? im trying to take advantage of my nvidia geforce gt 120m (its a laptop) to play around with cuda/c++ programming!

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• Extending Oracle Fusion Applications with Oracle ADF - Live training

  - by Grant Ronald

  We in the Product Management and Curriculum development team have been working on a new course which explains how to customize Fusion Applications with Oracle ADF.  This focuses on features such as MDS and Web Center Composer and shows how you can customize and personalize a Fusion application through task flows, validation layer and UI.  This new training material is available as on "on-demand" and features live video, demonstrations, whiteboarding and powerpoint. This is a key feature of our stack and understanding how you can harness it will give you incredible power and flexibility in your applications.  

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• php application deployment to redhat [closed]

  - by Subhash Dike

  I am a .net background person with most of the work with Windows environment and IIS etc. I have been given a task to deploy one php application on RedHat Linux box. All I have is the credentials and the server IP of that box. Can someone help about how to get started creating a new website on Apache 2.0 on redhat box and then putting php code over to that. I do not have physical access to that server as well. I know it's very basis question, but I am in dark for these things. Even if you can point me to some documentation that's fine or else at least the analogy with IIS should also help to certain extent.

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• What undergraduate course to choose for a mature programmer returning to study

  - by Dve

  I have been developing applications (mostly web-based) for almost 10 years now and have learnt pretty much everything I know through experience (and the internet!). I wouldn't call myself an advanced programmer, but I am quite proficient in several languages (C#, Javascript, Ruby, HTML/CSS etc) and spend a quite a bit of time working on personal projects and reading countless books & articles. I am looking to emigrate to Canada, hopefully Vancouver (im from the UK) and one way would be on a student visa, if I was going to be studying for a minimum of 2 years. Having never been to university or achieved anything higher than A-Levels I am quite tempted by this path. The thought of learning is more exciting to me now than it was 10 years ago! What would be people recommend as a good undergraduate course to take that would complement this career path? Would Math be beneficial, if so which area of Math? TL;DR What undergraduate course/area of study would complement 10 years of (mostly web-based) programming experience?

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• Writing jenkins plugin: where is the documentation?

  - by user22070

  On my current project we're using Jenkins to monitor our builds. Now they want me to write a Jenkins plugin to add some more monitoring parameters. I've taken a look at how the status monitor plugin works, and I can't figure some things out. I've tried to look for documentation for writing a plugin, but that seems to be sorely lacking. (the site only mentions how to generate the base project, and refers to a tutorial that's not that informative) What I'm trying to do is just add some options to each build, add a link, and a monitoring page. Adding to the main page is apparently done by adding the action, but I'm still trying to figure out the rest. And how it all ties in. Does anyone have any pointers, or a place where I can find some decent documentation?

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• E3 2012 : Tout savoir sur la Wii U : les caractéristiques de la console de Nintendo, les jeux et autres détails

  Tout savoir sur la Wii U Les caractéristiques, les jeux, les détails et le reste À l'occasion de l'E3, nous avons pu apprendre beaucoup sur la Wii U, la prochaine console de Nintendo. Commençons tout d'abord par les caractéristiques de la machine : Machine :[IMG]http://jeux.developpez.com/news/images/WiiU.jpg[/IMG] 4.57 cm de hauteur sur 26.67cm en longueur sur 17.2cm de large ; 1.5kg ; le processeur est basé sur un IBM Power ayant plusieurs coeurs ; la carte graphique est basée sur AMD Radeon HD mémoire flash, supporte aussi les cartes SD et possède quatre ports USB (deux à l'avant et deux à l'arrière) ; lec...

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• What do you think about gems and eggs? Alternatives?

  - by Juanlu001

  I've read recently some criticism (see 1, 2, 3) about the packaging distribution system of two popular programming languages: Ruby gems and Python eggs. The most important argument stated against them is that they replace the system package manager (in case there is one, as in every Linux distribution), which makes eggs and gems difficult to track, code difficult to patch, and so on. Are actually eggs and gems right? In case not, are there any alternatives to distributing Python or Ruby modules? Should developers focus on taking advantage of package manager (apt-get, pacman, ...) capabilities?

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• Not Quite Multiseat

  - by user2773520

  I am attempting to create a pair programming environment sort of set up like multiseat: https://help.ubuntu.com/community/MultiseatX[1] or https://help.ubuntu.com/community/MultiseatOneCard[2] (as the standard issue boxes only have one graphics card) The thing is, I only want one login session, just with 2 monitors, keyboards, and mice. As well as having 2 active applications (so 2 people can be typing independantly). They should ideally be able to mouse over and click & type in the other persons monitor, as well as move windows between the montors. Does anybody know of anything like this that will work? We are running Ubuntu 12.04.

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• Use a GUI designer or write it yourself for the desktop?

  - by TheLQ

  Writing a GUI for a program has always been a daunting, depressing, and frustrating task. It doesn't matter which language, its extremely hard to get what I want. Especially in compiled languages like Java where a change takes a minute or two to build. The result is that I increasingly use GUI designers for some of my project. Sure their is some spagetti code, but as long as I leave the configuration and a note saying "This was designed with X" I have no qualms with doing this. Is this an okay way to design a GUI? More importantly, is this what most people do? Or is the common way to just sit down and write it out?

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• EXADATA & GoldenGate - the perfect combination for thetrainline.com

  - by maria costanzo

  enhanced the customer experience sustaining rapid search and booking times for hundreds of millions of journey requests per annum EXADATA & GoldenGate : the perfect combination thetrainline.com used Oracle GoldenGate to migrate data from its legacy system to two  Oracle Exadata Database Machine X2-2 HC Quarter Rack instances to reduce downtime, avoid  risk of data loss, and eliminate the need for complex programming. "Oracle GoldenGate enabled us to complete the migration of three terabytes to Oracle Exadata, within a single 30-minute system outage,” East said. "Without Oracle GoldenGate, we would have required a 20 hour outage window to complete the migration, something that was completely unacceptable."  Discover more at the following link  

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• Play 2 with Scala or Java?

  - by Mik378

  I want to develop a big personal project using Play 2 Framework. I am expert with Java language but it seems, with the few articles I read that Play 2 works perfectly and especially with Scala. I've never worked with Scala but I already learned concept as closures, functional programming etc... Learning it would be interesting. I am really motivated for but I wonder if there are some people who have started coding with Play2/Java and have changed for Play2/Scala that could explain their major concrete advantages.

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• How to prevent certain applications from accessing the internet?

  - by Arun Haridas

  I want to prevent certain applications from accessing the internet. When I was using windows XP I had an application (i think it was Zone alarm) which always notified me when an application tried to access the internet. I wonder if there is an application in Ubuntu which would do the same task. If it is possible, please suggest a gui application. the problem is, my internet provider allows me to connect to a single host at a time, that means no two applications can use internet at the same time. When i checked system monitor it showing me that internet is working fine still my browser cant browse.So i want to kill the other application using the internet to browse.

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• Designing exceptions for conversion failures

  - by Mr.C64

  Suppose there are some methods to convert from "X" to "Y" and vice versa; the conversion may fail in some cases, and exceptions are used to signal conversion errors in those cases. Which would be the best option for defining exception classes in this context? A single XYConversionException class, with an attribute (e.g. an enum) specifying the direction of the conversion (e.g. ConversionFromXToY, ConversionFromYToX). A XYConversionException class, with two derived classes ConversionFromXToYException and ConversionFromYToXException. ConversionFromXToYException and ConversionFromYToXException classes without a common base class.

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• Testing Git competence

  - by David

  I hire a lot of programmers for tiny tasks. I very clearly specify that the tasks can only be completed by making a pull request on GitHub. Unfortunatelly, so many programmers do not know Git and often the programmers cannot complete the project due to not understanding/being willing to learn Git, even after they have undertaken the programming of the task. This is bad both for me and for the programmers. Sometimes I end up arguing for why it is inefficient that they just send me a zip file containing the code. Therefore, I am looking for an online service to certify that the programmers know how to make a pull request so I do not waste their nor my time. The certificate should be free for the coders, but may cost me. It is important that the course just focuses on exactly what is needed to make a clean pull request so it should not take more than 5 minutes to go through. Does such a thing exist?

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• Alternative to "inheritance versus composition?" [closed]

  - by Frank

  Possible Duplicate: Where does this concept of “favor composition over inheritance” come from? I have colleagues at work who claim that "Inheritance is an anti-pattern" and want to use composition systematically instead, except in (rare, according to them) cases where inheritance is really the best way to go. I want to suggest an alternative where we continue using inheritance, but it is strictly forbidden (enforced by code reviews) to use anything but public members of base classes in derived classes. For a case where we don't need to swap components of a class at runtime (static inheritance), would that be equivalent enough to composition? Or am I forgetting some other important aspect of composition?

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• Building my first ASP.NET WebForms application problem

  - by user1525474

  Hi I have recently started to learn C#/ASP.NET WebForms and after reading two books I thought I was ready to create my first web application. Problem is I could not have been more wrong. Although I am not quite a beginner as a programmer and have done some programming in Java (a Monopoly game), JavaScript (using jQuery), and PHP (create templates for WordPress), I never really created something that is database driven, and I can't seem to figure where to start. I am very confident in my HTML/CSS/jQuery skills, so that is not the problem. My end goal after becoming comfortable in ASP.NET WebForms is to learn MVC, ADO.NET, and the Entity Framework, and start a career as a .NET developer. I would like if someone could tell me some tutorials that build ASP.NET WebForms applications, such as a blog, so I can see what are the steps in creating an ASP.NET WebForms database driven application. I already have to projects in mind for ASP.NET. One is building a blog and the other building a job board.

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• Language Design: Are languages like phyton and coffescript really more comprehendable?

  - by kittensatplay

  the "Verbally Readable !== Quicker Comprehension" arguement on http://ryanflorence.com/2011/case-against-coffeescript/ is really potent and interesting. i and im sure other would be very interested in evidence arguing against this. there's clear evidence for this and i believe it. ppl naturally think in images, not words, so we should be designing languages dissimilar to human language like english, french, whatever. being "readable" is quicker comprehension. most articles on wikipedia are not readable as they are long, boring, dry, sluggish, very very wordy, and because wikipedia documents a ton of info, is not especially helpful when compared to much more helpful sites with more practical, useful, and relevant info. but languages like phyton and coffescript are "verbally readable" in that they are closer to the english language syntax, and programming firstly and mainly in python, im not so sure this is really a good thing. the second interesting argument is that coffeescript is an intermediator so thereby another step between to ends, which may increase chances of bugs. while coffeescript has other practical benefits, this question is focused specifically on evidence showing support for the counter-case of language "readability"

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• MVC shared model different required fields on different type

  - by kurasa

  I have a model called Car and depending on what type of Car the user select the view is presented differently. For example the user selects from a grid of different cars and depending if it is a Volvo or a Kia or a Ford the view must allow different fields to be editable. For example with a Volvo the color is editable and is mandatory but with a Kia it is not. I would like to use the one Car class to bind the view but want the client side validation to pick up the required fields based on what type of car. I want to go only to one Action method for the Update what is a good way to approach this problem...? create a base class and inherit from it? will this give me binding problems..?

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• Windows2Linux Porting

  Recently I faced one very interesting task. I had to port an application from one platform (Windows) to another (Linux). It is an interesting topic. First, knowledge of several platforms and writing the code for them is a good experience for every developer. Secondly, writing an application for different platforms makes it widespread and needed by many. So, I would like to share my impressions concerning this process. This article is intended for everybody who wants to write a cross-platform application.

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