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  • How do I tell the cases when it's worth to use LINQ?

    - by Lijo
    Many things in LINQ can be accomplished without the library. But for some scenarios, LINQ is most appropriate. Examples are: SELECT - http://stackoverflow.com/questions/11883262/wrapping-list-items-inside-div-in-a-repeater SelectMany, Contains - http://stackoverflow.com/questions/11778979/better-code-pattern-for-checking-existence-of-value Enumerable.Range - http://stackoverflow.com/questions/11780128/scalable-c-sharp-code-for-creating-array-from-config-file WHERE http://stackoverflow.com/questions/13171850/trim-string-if-a-string-ends-with-a-specific-word What factors to take into account when deciding between LINQ and regular .Net language elements?

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  • Comparing CSS From XSL

    There are two style sheet languages widely used in the website design industry today. These are CSS (Cascading Style Sheets) and XSL (Extensible Stylesheet Language). According to many web design exp... [Author: Margarette Mcbride - Web Design and Development - June 08, 2010]

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  • Understanding T-SQL Expression Short-Circuiting

    Understanding the basics of how T-SQL logic works in branching is important to ensure you code works as expected. This article will help you learn how this impacts control of flow language. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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  • Learn programming backwards, or "so I failed the FizzBuzz test. Now what?"

    - by moraleida
    A Little Background I'm 28 today, and I've never had any formal training in software development, but I do have two higher education degrees equivalent to a B.A in Public Relations and an Executive MBA focused on Project Management. I've worked on those fields for about 6 years total an then, 2,5 years ago I quit/lost my job and decided to shift directions. After a month thinking things through I decided to start freelancing developing small websites in WordPress. I self-learned my way into it and today I can say I run a humble but successful career developing themes and plugins from scratch for my clients - mostly agencies outsourcing some of their dev work for medium/large websites. But sometimes I just feel that not having studied enough math, or not having a formal understanding of things really holds me behind when I have to compete or work with more experienced developers. I'm constantly looking for ways to learn more but I seem to lack the basics. Unfortunately, spending 4 more years in Computer Science is not an option right now, so I'm trying to learn all I can from books and online resources. This method is never going to have NASA employ me but I really don't care right now. My goal is to first pass the bar and to be able to call myself a real programmer. I'm currently spending my spare time studying Java For Programmers (to get a hold on a language everyone says is difficult/demanding), reading excerpts of Code Complete (to get hold of best practices) and also Code: The Hidden Language of Computer Hardware and Software (to grasp the inner workings of computers). TL;DR So, my current situation is this: I'm basically capable of writing any complete system in PHP (with the help of Google and a few books), integrating Ajax, SQL and whatnot, and maybe a little slower than an experienced dev would expect due to all the research involved. But I was stranded yesterday trying to figure out (not Google) a solution for the FizzBuzz test because I didn't have the if($n1 % $n2 == 0) method modulus operator memorized. What would you suggest as a good way to solve this dilemma? What subjects/books should I study that would get me solving problems faster and maybe more "in a programmers way"? EDIT - Seems that there was some confusion about what did I not know to solve FizzBuzz. Maybe I didn't express myself right: I knew the steps needed to solve the problem. What I didn't memorize was the modulus operator. The problem was in transposing basic math to the program, not in knowing basic math. I took the test for fun, after reading about it on Coding Horror. I just decided it was a good base-comparison line between me and formally-trained devs. I just used this as an example of how not having dealt with math in a computer environment before makes me lose time looking up basic things like modulus operators to be able to solve simple problems.

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  • Career Development: What should I learn next after Python? and Why? [closed]

    - by Josh
    Hi all I'm currently learning Python. I want to know what should I learn next out of these programming langauages: PHP Actionscript 3 Objective-C (iPhone applications) I work in the Multimedia industry and have decided to learn Python as a first programming language seriously because I would like to learn the basics of programming, to mainly write scripts at work that Automate task (eg. Edit multiple XML files quickly) At work we have a senior developer who knows Actionscript and PHP very well (although knows PHP better). We also have been developing iPhone applications for 2 weeks, Our senior developer could learn it although we have lots of work currently with PHP and Actionscript 3 type work and haven't had time or reason to pick up iOS development. Here are the reasons I want to learn each language, But I cannot decide what I'll learn next: PHP: I want to learn PHP because it will help with Web Development. PHP is very wanted by employers. Senior developer at work writes everything in it web sites, CMS etc. (including XML checks and scripts), I will learn a lot from him (once I learn the basics). However, I don't want to learn Web because you have to deal with lots of cross-browser problems. Actionscript 3: At work we are looking to put on another developer to help with online activities and very small games (using Actionscript 3.0 and Flash CS5) for (eg. First Aid Activities etc) I would like to do things that have a element of design as I'm better at Photoshop then developing. I want to be creative, I like to interact with users in a fun way. Objective-C (iPhone applications): We are a all mac office, we may get more iPhone, iPad application work(jobs) that need to be created. Work has found it nearly impossible to find good iPhone developers. I like apple products (Macs and iPhones), I would like to make my own games, applications in my spare time(if I knew how). Should I learn Actionscript first because it would be easier to learn then Objective-C? Should I learn PHP because it is very widely used? Should I learn Objective-C because it is really wanted by employers now?

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  • How to get Messages Pending Count from a Queue using WLST?

    - by lmestre
    WLST is a scripting Language that helps to achieve similar functionality as the ones you have in WebLogic console, but in a command line fashion.You can develop your WLST Scripts using Eclipse OEPE, read more here:https://blogs.oracle.com/oepe/entry/new_oracle_enterprise_pack_forFinally, here is an example to get Messages Pending Count using WLST: . ./setDomainEnv.sh java weblogic.WLST connect('weblogic','welcome1','t3://localhost:7001') domainRuntime() jms= getMBean ('ServerRuntimes/MyManagedServer/JMSRuntime/MyManagedServer.jms/JMSServers/MyJMSServer/Destinations/MyModule!MyQueue') jms.getMessagesPendingCount() Enjoy!WLST documentation:http://docs.oracle.com/middleware/1212/wls/WLSTG/index.html

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  • How should I evaluate new browser languages?

    - by Andrea
    In these days there are many projects whose aim is to bring new languages to the browser by compiling them to JavaScript. Among the others one can mention ClojureScript, CoffeScript, Dart, haXe, Emscripten, Amber Smalltalk. I'd like to try a few of these out, but I am not sure what I should be looking for when evaluating these languages to see if they are suitable for production. How should I evaluate a new browser language, and what are the pitfalls I should be looking for?

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  • How to run Arabic 102 keyboard instead of 101

    - by Shady N. Janzeir
    I'm completely new to Linux and Ubuntu, which I had just installed last night and I'm still feeling my way around it. So far, I managed to install the Arabic language pack, but the keyboard only functions in 101 mode, whereas I need it to function in 102 mode on this particular machine due to the specific layout of the Arabic letters on the keyboard. The keyboard operates fine in 101 mode, but the location of one of the letters is on a different key. Is there a way to do this? Thanks in advance, Shady

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  • How does a "Variables introduce state"?

    - by kunj2aan
    I was reading the "C++ Coding Standards" and this line was there: Variables introduce state, and you should have to deal with as little state as possible, with lifetimes as short as possible. Doesn't anything that mutates eventually manipulate state? What does "you should have to deal with little state as possible" mean? In an impure language such as C++, isn't state management really what you are doing? And what are other ways to "deal with as little state as possible" other than limiting variable lifetime?

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  • Working Better With Ruby on Rails

    In the last four years, we have seen how Ruby on Rails (RoR) built on, and accelerated the wider acceptance of, the object-oriented Ruby language. Consequently, the Ruby/RoR combo has become a workho... [Author: Anthony Rainey - Computers and Internet - April 26, 2010]

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  • Is the STL efficient enough for mobile devices?

    - by mx2
    When it comes to mobile game development on iOS and Android NDK, some developers write their own C++ containers, while others claim that STL is more than adequate for mobile game development (For example, the author of iPhone 3D Programming uses STL rather than Objective-C in his examples. His defense is that STL is no slower than Objective-C). Then there are also mobile developers who abandon C++ entirely and develop games entirely (or mostly) in the C language (C89/C90). What are the benefits and drawbacks of each approach?

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  • Linux AI robot baby dinosaur

    <b>Handle With Linux:</b> "Watch this: a Linux powered baby dinosaur, with a arm processor heart. The robot runs Live OS. An embedded, linux based operating system which features a custom programming language, giving the possibility to interact with the robot on the programming level"

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  • Meta Tag and Search Engine Ranking

    According to SEO Services India, Meta Tag is a coding statement in Hyper Text Markup Language (HTML). It is the information displayed on the head, which comes after the title tag of a Web site. This ... [Author: John Anthony - Web Design and Development - June 10, 2010]

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  • How to override the system locale on a single command?

    - by Alistair Buxton
    When helping someone we often ask them to show the output of a command eg: sudo fdisk -l | pastebinit If the user is not using an English locale, the output may be in a foreign language: Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 huvuden, 63 sektorer/spår, 91201 cylindrar, totalt 1465149168 sektor This complicates support. How can one run a command with an override on the system locale to get English output?

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  • The Ups And Downs Of Using CSS

    When it comes to web designs and creating web layouts, CSS has been considered by many as one of the most widely used form of language for web development. This is because of its several advantages c... [Author: Margarette Mcbride - Web Design and Development - August 24, 2009]

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  • Filtres d'écran en 2D avec OpenGL dans le Blender Game Engine, une traduction de Guillaume Belz

    Bonjour à tous Blender est à l'origine un logiciel libre de dessin 3D, mais propose de plus en plus de fonctionnalités avancées d'animation. En particulier, Blender intègre un moteur de jeux appelé Blender Game Engine (BGE), qui permet aux utilisateurs d'écrire leurs propres shaders en utilisant les langages Python et OpenGL Shading Language (GLSL). Dans cet article, l'auteur présente les bases pour écrire ses propres shaders et les paramétrer dans Blender à partir d'un exemple simple : un filtre de flou. Filtres d'écran en 2D avec OpenGL dans le Blender Game Engine A...

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  • What's the most useful 10% of UML and is there a quick tutorial on it?

    - by Hanno Fietz
    I want my scribbles of a program's design and behaviour to become more streamlined and have a common language with other developers. I looked at UML and in principle it seems to be what I'm looking for, just way overkill. The information I found online also seems very bloated and academic. Is there a no-bullshit, 15-minutes introduction to the handful of UML symbols I'll need when discussing the architecture of some garden variety software on a whiteboard with my colleagues?

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  • See you at OSCON!

    - by darcy
    In just under a month, I'll be speaking at the OSCON Java conference about various OpenJDK and JDK 7 matters: JDK 7 in a Nutshell The State of JDK and OpenJDK More detailed talks on those topics include Stuart's session on Coin in Action: Using New Java SE 7 Language Features in Real Code and Dalibor's OpenJDK – When And How To Contribute To The Java SE Reference Implementation. See you in Portland!

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  • 3 Reasons You Need To Know Something About Every Technology

    - by Tim Murphy
    I make my living as a consultant and a general technologist.  I credit my success to the fact that I have never been afraid to pick up any product, language or platform needed to get the job done.  While Microsoft technologies I my mainstay, I have done work on mainframe and UNIX platforms and have worked with a wide variety of database engines.  Each one has it’s use and most times it is less expensive to find a way to communicate with an existing system than to replace it. So what are the main benefits of expending the effort to learn a new technology? New ways to solve problems Accelerate development Advise clients and get new business opportunities By new technology I mean ones that you haven’t had experience with before.  They don’t have to be the the one that just came out yesterday.  As they say, those who do not learn from history are bound to repeat it.  If you can learn something from an older technology it can be just as valuable as the shiny new one.  Either way, when you add another tool to your kit you get a new view on each problem you face.  This makes it easier to create a sound solution. The next thing you can learn from working with different products and techniques is how to more efficiently develop solve problems.  Many times if you are working with a new language you will find that there are specific design patterns that are used with it in normal use.  These can usually be applied with most languages.  You just needed to be exposed to them. The last point is about helping your clients and helping yourself.  If you can get in on technologies early you will have advantage over your competition in the market.  You will also be able to honestly advise you client on why they should or should not go with a new product.  Being able to compare products and their features is always an ability that stake holders appreciate. You don’t need to learn every detail of a product.  Learn enough to function and get an idea of how to use the technology.  Keep eating those technology Wheaties and you will be ready to go the distance in any project. del.icio.us Tags: Technology,technologists,technology generalist,Software Architecture

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  • cloud programming for OpenStack in C / C++

    - by Basile Starynkevitch
    (Sorry for such a fuzzy question, I am very newbie to cloud programming) I am interested in designing (and developing) a (free software) program in C or C++ (probably, most of it being meta-programmed, i.e. part of the C code code being generated). I am still in the thinking / designing phase. And I might perhaps give up. For reference, I am the main architect and implementor of GCC MELT, a domain specific language to extend the GCC compiler (the MELT language is translated to C/C++ and is bootstrapped: the MELT to C/C++ translator being written in MELT). And I am dreaming of extending it with some cloud computing abilities. But I am a newbie in cloud computing. (I am only interested in free-software, GPLv3 friendly, based cloud computing, which probably means openstack). I believe that "compiling on the cloud with some enhanced GCC" could make sense (for super-optimizations or static analysis of e.g. an entire Linux distribution, or at least a massive GCC compiled free software like Qt, GCC itself, or the Linux kernel). I'm dreaming of a MELT specific monitoring program which would store, communicate, and and enhance GCC compilation (extended by MELT). So the picture would be that each GCC process (actually the cc1 or cc1plus started by the gcc driver, suitably extended by some MELT extension) would communicate with some monitor. That "monitoring/persisting" program would run "on the cloud" (and probably manage some information produced by GCC e.g. on NoSQL bases). So, how should some (yet to be written) C program (some Linux daemon) be designed to be cloud-friendly? So far, I understood that it should provide some Web service, probably thru a RESTful service, so should use an HTTP server library like onion. And that OpenStack is able to start (e.g. a dozen of) such services. But I don't have a clear picture of what OpenStack brings. So far, I noticed the ability to manage (and distribute) virtual machines (with some Python API). It is less clear how can it distribute some ELF executable, how can it start it, etc. Do you have any references or examples of C / C++ programming on the cloud? How should a "cloud-friendly" (actually, OpenStack friendly) C/C++ server application be designed?

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  • Parsing T-SQL – The easy way

    - by Dave Ballantyne
    Every once in a while, I hit an issue that would require me to interrogate/parse some T-SQL code.  Normally, I would shy away from this and attempt to solve the problem in some other way.  I have written parsers before in the the past using LEX and YACC, and as much fun and awesomeness that path is,  I couldnt justify the time it would take. However, this week I have been faced with just such an issue and at the back of my mind I can remember reading through the SQLServer 2012 feature pack and seeing something called “Microsoft SQL Server 2012 Transact-SQL Language Service “.  This is described there as : “The SQL Server Transact-SQL Language Service is a component based on the .NET Framework which provides parsing validation and IntelliSense services for Transact-SQL for SQL Server 2012, SQL Server 2008 R2, and SQL Server 2008. “ Sounds just what I was after.  Documentation is very scant on this so dont take what follows as best practice or best use, just a practice and a use. Knowing what I was sort of looking for something, I found the relevant assembly in the gac which is the simply named ,’Microsoft.SqlServer.Management.SqlParser’. Even knowing that you wont find much in terms of documentation if you do a web-search, but you will find the MSDN documentation that list the members and methods etc… The “scanner”  class sounded the most appropriate for my needs as that is described as “Scans Transact-SQL searching for individual units of code or tokens.”. After a bit of poking, around the code i ended up with was something like [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.Management.SqlParser") | Out-Null $ParseOptions = New-Object Microsoft.SqlServer.Management.SqlParser.Parser.ParseOptions $ParseOptions.BatchSeparator = 'GO' $Parser = new-object Microsoft.SqlServer.Management.SqlParser.Parser.Scanner($ParseOptions) $Sql = "Create Procedure MyProc as Select top(10) * from dbo.Table" $Parser.SetSource($Sql,0) $Token=[Microsoft.SqlServer.Management.SqlParser.Parser.Tokens]::TOKEN_SET $Start =0 $End = 0 $State =0 $IsEndOfBatch = $false $IsMatched = $false $IsExecAutoParamHelp = $false while(($Token = $Parser.GetNext([ref]$State ,[ref]$Start, [ref]$End, [ref]$IsMatched, [ref]$IsExecAutoParamHelp ))-ne [Microsoft.SqlServer.Management.SqlParser.Parser.Tokens]::EOF) { try{ ($TokenPrs =[Microsoft.SqlServer.Management.SqlParser.Parser.Tokens]$Token) | Out-Null $TokenPrs $Sql.Substring($Start,($end-$Start)+1) }catch{ $TokenPrs = $null } } As you can see , the $Sql variable holds the sql to be parsed , that is pushed into the $Parser object using SetSource,  and then we will use GetNext until the EOF token is returned.  GetNext will also return the Start and End character positions within the source string of the parsed text. This script’s output is : TOKEN_CREATE Create TOKEN_PROCEDURE Procedure TOKEN_ID MyProc TOKEN_AS as TOKEN_SELECT Select TOKEN_TOP top TOKEN_INTEGER 10 TOKEN_FROM from TOKEN_ID dbo TOKEN_TABLE Table note that the ‘(‘, ‘)’  and ‘*’ characters have returned a token type that is not present in the Microsoft.SqlServer.Management.SqlParser.Parser.Tokens Enum that has caused an error which has been caught in the catch block.  Fun, Fun ,Fun , Simple T-SQL Parsing.  Hope this helps someone in the same position,  let me know how you get on.

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  • What are the essential things one needs to know about UML?

    - by Hanno Fietz
    I want my scribbles of a program's design and behaviour to become more streamlined and have a common language with other developers. I looked at UML and in principle it seems to be what I'm looking for, but it seems to be overkill. The information I found online also seems very bloated and academic. How can I understand UML in plain-English way, enough to be able to explain it to my colleagues? What are the canonical resources for understanding UML at a ground level?

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  • Is there a canonical book on general abstractions and modeling?

    - by David The Man
    I've been trying to understand the fundamentals of general abstractions and modeling: there are quite a lot of books when you search for abstractions, but most of those seem to be about learning object-oriented programming in a given language. Is there a book out there that's the de-facto standard for describing best practices, design methodologies, and other helpful information about general abstractions and modeling? What about that book makes it special?

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  • change the subdomain and keep the rest of the url

    - by MohamedKadri
    Hello, I'm working on a multilingual website, and I want to generate the links in this way: The site is domain.tld and defaults to English, It has some subdomains like fr.domain.tld which will be in French, de.domain.tld which will be in German, it.domain.tld which will be in Italian... when the current page is the index, the links to other languages will be like this: domain.tld, fr.domain.tld, de.domain.tld, it.domain.tld.... But when we are in another page like domain.tld/my-page, how do we generate the URLs to match the current page but with another subdomain/language using PHP

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  • Sortie des spécifications d'OpenCL 1.2 : séparation compilation/linkage, partitionnement et support de nouveaux types de périphériques

    Sortie des spécifications d'OpenCL 1.2 Séparation compilation/linkage, partitionnement et support de nouveaux types de périphérique Le groupe Khronos vient de ratifier et publier les spécifications d'OpenCL 1.2 (Open Computing Language), l'API et extension standardisée du langage C pour supporter le développement sur GPU et la programmation parallèle distribuée sur plusieurs types de processeurs compatibles. Parmi les nouveautés de cette version, citons : Le partitionnement des périphériques permet de diviser un périphérique en plusieurs sous-périphériques pour contrôler directement les tâches assignées à chaque unité de calcul ; Séparation de la compilation et ...

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