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• Besides macros, are there any other metaprogramming techniques?

  - by mhr

  I'm making a programming language, and, having spent some time in Lisp/Scheme, I feel that my language should be malleable. Should I use macros, or is there something else I might/should use? Is malleable syntax even a good idea? Is it perhaps too powerful a concept? EDIT: In doing some research, I found fexprs. I don't really understand what these are. Help with that in an answer too please. EDIT2: Is it possible to have a language with macros/something-of-a-similar-nature without having s-expressions?

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• How to make a non-english clone of CoffeeScript?

  - by Ans

  I want to make a non-english programming language that is identical to what CoffeeScript is to JavaScript. What I mean is that I don't want to build my own design or syntax. Just want to have a non-english programming language that compiles to JavaScript. I want to follow everything CoffeeScript fellows so I don't really want to make any design decisions. For example: This is coffeescript: number = 42 opposite = true number = -42 if opposite I want my language to be something like: ??? = 42 ??? = ???? ??? = -42 ??? ??? that get compiled to: var number, opposite; number = 42; opposite = true; if (opposite) { number = -42; }

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• Google is good or bad for programmer? [closed]

  - by Vikas

  Recently I was being interviewed by a company and faced one question. The interviewer asked me a question and at that time I didn't know the answer but if I had been asked about just 4 months ago, I could have answered it. The question was from new language that I learned just 4 months ago. But I just get overview of the language and just get started working on that. Whenever I face difficultly, I google it. That means we do not have to memorize the whole programming language book! So in that situation I felt that Google screwed my job! Not talking subjectively, Is it good to google all the time?

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• Languages with similar features to JavaFX Script

  - by bunglestink

  I just completed a small project in JavaFX, only finding that it has been declared dead by Oracle. JavaFX Script actually seemed to be a pretty interesting language with some neat features for its domain, particularly with bind for data binding and on replace for triggered events. These features actually make the language very useful for small, quick, RIA type apps, which leads to my question: Are there any mainstream languages with features similar to bind and on replace? After working with JavaFX, I got some ideas for some small personal (academic) projects that could take advantage of these features, but I would prefer to not start anything new in a language considered extinct by its owners.

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• how Computer Networks is related to Web/Desktop Java programming

  - by C4CodeE4Exe

  Being a Java programmer , I am wondering how could my work experience would help me learning networking skills. I know C language is used in network socket programming. I know if one knows how to program in one language its not tough to learn another language. Question is I am not able to find much on networks when it comes to Java(may be my knowledge is limited). Do companies like CISCO,TELUS Inc. rely heavily on programmers with such background.

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• Case convention- Why the variation between languages?

  - by Jason

  Coming from a Java background, I'm very used to camelCase. When writing C, using the underscore wasn't a big adjustment, since it was only used sparingly when writing simple Unix apps. In the meantime, I stuck with camelCase as my style, as did most of the class. However, now that I'm teaching myself C# in preparation for my upcoming Usability Design class in the fall, the PascalCase convention of the language is really tripping me up and I'm having to rely on intellisense a great deal in order to make sure the correct API method is being used. To be honest, switching to the PascalCase layout hasn't quite sunk in the muscle memory just yet, and that is frustrating from my point of view. Since C# and Java are considered to be brother languages, as both are descended from C++, why the variation in the language conventions? Was it a personal decision by the creators based on their comfort level, or was it just to play mindgames with new introductees to the language?

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• From Imperative to Functional Programming

  - by user66569

  As an Electronic Engineer, my programming experience started with Assembly and continue with PL/M, C, C++, Delphi, Java, C# among others (imperative programming is in my blood). I'm interested in add to my previous knowledge, skills about functional programming, but all I've seen until now seems very obfuscated and esoteric. Can you please answer me these questions? 1) What is the mainstream functional programming language today (I don't want to get lost myself studying a plethora of FP languages, just because language X has the feature Y)? 2) What was the first FP language (the Fortran of functional programming if you want)? 3) Finally, when talking about pure vs. non pure FP what are the mainstream languages of each category? Thank you in advance

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• What is the right option of programming languages and tools for building our website?

  - by Goma

  We are 3 persons trying to build a large website which will be available in 3 languges. However, we will start with one language and with small idea then we are going to improve it and make it larger! What do you think the best tools and language that we should use? We are caring alot about the speed of loading the pages and tools that provide excellent qulaity with cheaper fees. Edit: We are graphic designers, so we did not choose the programming language yet. But we studied computer science and we have an idea but we found that this is the best place to ask the question and expect the right answer from you. Should we use ASP.NET for example? or PHP? We do not want an expesive option that will cost us alot in the future and we do not want to change the technology at least for the first 5 years. Thanks!

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• To use Dart, the Java programmer has to work with 2 languages? [closed]

  - by Sridhar-Sarnobat

  When deciding on a technology to use for web apps, it's become a difficult choice between GWT and Dart and I am looking for guidance in deciding. GWT is a java programmer's dream because they don't have to learn a new language or have to worry about a separate IDE or extra plugin etc. GWT was sold using this value proposition - one didn't need to program in Javascript. But are Google making a U-turn and saying "go through the hassle of learning a new language" afterall? Or is it intended for there to be a Java to Dart compiler so that Java developers do not have to learn a new language? (this is not a rant, so I don't know why you are down-voting the question) Note: "the syntax is very similar" is not a justification. You could say why bother with GWT and just work with Java + Javascript directly.

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• Learning C++ but wanting to develop iOS Apps

  - by DiscreteGenius

  I'm a computer engineering student and taking my second programming class. I'm learning C++ using "C++ Primer Plus" 5th edition by Prata. I want to develop for iOS. I understand the main language for Xcode is Objective-C. Am I hurting myself by learning C++ before any other language (notably before my desired lang Objective-C)? There's got to be a reason the university requires C++ to learn as a basis language. Please offer any helpful guidance or how I should go about this. Thanks//

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• Why is JavaScript not used for classical application development (compiled software)?

  - by Jose Faeti

  During my years of web development with JavaScript, I come to the conclusion that it's an incredible powerful language, and you can do amazing things with it. It offers a rich set of features, like: Dynamic typing First-class functions Nested functions Closures Functions as methods Functions as Object constructors Prototype-based Objects-based (almost everything is an object) Regex Array and Object literals It seems to me that almost everything can be achieved with this kind of language, you can also emulate OO programming, since it provides great freedom and many different coding styles. With more software-oriented custom functionalities (I/O, FileSystem, Input devices, etc.) I think it will be great to develop applications with. Though, as far as I know, it's only used in web development or in existing softwares as a scripting language only. Only recently, maybe thanks to the V8 Engine, it's been used more for other kind of tasks (see node.js for example). Why until now it's only be relegated only to web development? What is keeping it away from software development?

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• Google I/O 2012 - Putting the App Back into Web App - Web Programming with Dart

  Google I/O 2012 - Putting the App Back into Web App - Web Programming with Dart Dan Grove, Vijay Menon Do you want to build blazingly fast applications with beautiful graphics and offline support? Would you like to run those apps anywhere on the open web? Would you like to develop those apps in a language that supports modular large-scale development while keeping the lightweight feel of a scripting language? This session will show you how to use the Dart programming language to develop the next generation of amazing applications for the open web. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 187 4 ratings Time: 57:16 More in Science & Technology

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• Avoid penalties for duplicate (multilanguage) shared hosting

  - by Dave

  My concern is about SEO. Now let me explain the scenario. I am making a 3 languages website. The development is alright, but I was targeting local customers with one domain, and international (english version) with another. Eg: Local http://www.minhalojadesapatos.com.br (this is not the real website, just example!) Other http://www.myshoesstore.com.br Both domain point to exactly the same hosting and content, but when user comes through local domain, default language is set to portuguese, otherwise, default is english. Language handling on backend uses PHP Sessions and cookies, so with just a click users can change content language. How to avoid being SEO-penalised in this context? (yeah, I was hungry when focusing market for choosing two domains but the activity really needs that, it is a travel agency).

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• Why did the team at LMAX use Java and design the architecture to avoid GC at all cost?

  - by kadaj

  Why did the team at LMAX design the LMAX Disruptor in Java but all their design points to minimizing GC use? If one does not want to have GC run then why use a garbage collected language? Their optimizations, the level of hardware knowledge and the thought they put are just awesome but why Java? I'm not against Java or anything, but why a GC language? Why not use something like D or any other language without GC but allows efficient code? Is it that the team is most familiar with Java or does Java possess some unique advantage that I am not seeing? Say they develop it using D with manual memory management, what would be the difference? They would have to think low level (which they already are), but they can squeeze the best performance out of the system as it's native.

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• Deferent ways of solving problems in code.

  - by Erin

  I now program in C# for a living but before that I programmed in python for 5 years. I have found that I write C# very that most examples I see on the web. Rather then writing things like: foreach (string bar in foo) { //bar has something doen to it here } I write code that looks like this. foo.ForEach( c => c.someActionhere() ) Or var result = foo.Select( c => { //Some code here to transform the item. }).ToList(); I think my using code like above came form my love of map and reduce in python while not exactly the same thing the concepts are close. Now it's time for my question. What concepts do you take and move with you from language to language. That allow you to solve a problem in a way that is not the normal accepted solution in that language?

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• job offer in dead technology

  - by bold

  I have a job offer in a dead technology (specific programming language) that I don't want to work with nor do I believe it will offer many jobs in the future. It requires twice a year travels abroad, which not a plus in my eyes. On the other hand the money on the table is high. What would you do? edit: as its not clear I got a job in a programming language that is different from the academic programming language I worked with. Now I see it as a mistake to head to that direction.

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• Develop a small size software using C only for copying same data to multiple external drives simultaneously [on hold]

  - by VSP

  I want to develop a software that can copy the same data to multiple external drives, simultaneously. For example, consider a file Movie and I have 3 external drives to copy it to, and I want to copy Movie to all these 3 drives(these drives can be flash storage or external hard-disk or pen-drive etc. but have one thing in common, i.e. they are all external drives) at the same time, means when I right-click on Movie there has to be 1 option saying Copy to All Drives. It's a sort of mini-project and I want to use C language only. For starting I would like it to work only on Windows OS. What are the requirements of developing this software (not the system requirements but what will I need to develop such a software, like editor,compiler etc.)? I know this type of software must have already been developed but I want to use C language and C Language only. So, is it possible to develop such a software?

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• How to get started with programming

  - by S.M.

  I have never programmed before. In the 5th grade, I did write very elementary programs using BASIC and that was 7 year back. I wish to learn how to program and I was wondering if someone could please suggest how to get started. For example, I do not know enough to form a judgement on what language should be appropriate to get started. What programming language would you suggest to get started with programming? What are the resources to learn the language you recommend.

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• What would you call the concept of CofeeScript or Sass to be?

  - by MaG3Stican

  There is this rising trend with web development of making new pseudo languages to extend the functionality of JavaScript, CSS and HTML given that those are static and their metamorphosis or evolution is painfully slow due to the variety of browser providers. So I am currently having a concept dilema on how to categorize them for a book I was made to write by my employer as no one seems to have a name for these pseudo languages. A tiny list of them : JavaScript: LiveScript, Metalua, Uberscript, EmberScript. HTML: Razor, Java Scriptlets. CSS : LESS, Sass. I believe the concept of these pseudo languages and a language or an extension of a language is quite different. First these languages do not extend any functionality currently existing on HTML or CSS or JavaScript, they simply work around it. And also they do not "compile" to an intermediate language, they are merely 1-1 translated to something that only then can be compiled. What would you call them?

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• What are steps in making an operating system in C ? [duplicate]

  - by ps06756

  This question already has an answer here: Compiler/OS Design - Where to start [closed] 3 answers I am trying to make an my own OS. This is for educational purpose only, so that I get to understand the internals as well as get a good idea of low level programming. I have some prior application development experience in C#/python/C++/C. I am a noob in assembly language(very less experience and knowledge). I understand that in writing an operating system,we can't go without assembly language. Currently, I have just printed a string in assembly language in the boot sector using qemu and BIOS interrupts. What I want is that, can someone specifically point out the steps that I need to follow to make my operating systems run C programs. So that, I can start writing my OS in C. Any other piece of advice to help a newbie, regarding the same is also welcome. Although, I have looked into many os development related tutorials/websites, I can't seem to find this information anywhere.

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• The new Facebook Pages removed publication localization (translation)? [closed]

  - by Myka Eyl

  On the previous version of Facebook Pages I was able to specify in which language (or even countries) I wanted to publish a post. I've searched a LOT of time everywhere and I do not find anything like that since the timeline has landed on Facebook Pages. Do you know how I could publish something on a Facebook Page but only for ONE language? Because publishing things in several languages could get the "page fans" angry (too many new items that they could not read) and unlike the page. I would really appreciate how to find some language-specific options for new publications on a Facebook Page (I am admin of that page, of course). Any help will be greatly appreciated! Thanks you

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• imapsync - Authentication failed

  - by Touff

  I've deployed many Google Apps accounts and have used imapsync a number of times to migrate accounts to Google Apps. This time however, no matter what I try imapsync refuses to work claiming my credentials are incorrect - I've checked them time and time again and they are 100% correct. On Ubuntu 12, built from source, my command is: imapsync --host1 myserver.com --user1 [email protected] --password1 mypassword1 -ssl1 --host2 imap.gmail.com --user2 [email protected] --password2 mypassword2 -ssl2 -authmech2 PLAIN Full output from the command: get options: [1] PID is 21316 $RCSfile: imapsync,v $ $Revision: 1.592 $ $Date: With perl 5.14.2 Mail::IMAPClient 3.35 Command line used: /usr/bin/imapsync --debug --host1 myserver.com --user1 [email protected] --password1 mypassword1 -ssl1 --host2 imap.gmail.com --user2 [email protected] --password2 mypassword2 -ssl2 -authmech2 PLAIN Temp directory is /tmp PID file is /tmp/imapsync.pid Modules version list: Mail::IMAPClient 3.35 IO::Socket 1.32 IO::Socket::IP ? IO::Socket::INET 1.31 IO::Socket::SSL 1.53 Net::SSLeay 1.42 Digest::MD5 2.51 Digest::HMAC_MD5 1.01 Digest::HMAC_SHA1 1.03 Term::ReadKey 2.30 Authen::NTLM 1.09 File::Spec 3.33 Time::HiRes 1.972101 URI::Escape 3.31 Data::Uniqid 0.12 IMAPClient 3.35 Info: turned ON syncinternaldates, will set the internal dates (arrival dates) on host2 same as host1. Info: will try to use LOGIN authentication on host1 Info: will try to use PLAIN authentication on host2 Info: imap connexions timeout is 120 seconds Host1: IMAP server [SERVER1] port [993] user [USER1] Host2: IMAP server [imap.gmail.com] port [993] user [USER2] Host1: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE AUTH=PLAIN AUTH=LOGIN] Dovecot ready. Host1: SERVER1 says it has CAPABILITY for AUTHENTICATE LOGIN Host1: success login on [SERVER1] with user [USER1] auth [LOGIN] Host2: * OK Gimap ready for requests from MY-VPS Host2: imap.gmail.com says it has CAPABILITY for AUTHENTICATE PLAIN Failure: error login on [imap.gmail.com] with user [USER2] auth [PLAIN]: 2 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure) I have tried -authmech2 LOGIN as well which returns: Host2: imap.gmail.com says it has NO CAPABILITY for AUTHENTICATE LOGIN Failure: error login on [imap.gmail.com] with user [[email protected]] auth [LOGIN]: 2 NO [AUTHENTICATIONFAILED] Invalid credentials (Failure) If anyone can shed some light on this I would greatly appreciate it.

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• Hudson Mercurial checkout throws exception on Debian

  - by Jack

  I'm trying to configure Hudson to checkout my site's sources from Mercurial but it throws an exception. The /var/lib/hudson/jobs/jobname directory does exist, and I can create a workspace directory in there (even after su hudson), but as soon as I run the Hudson job again this directory disappears and the job ends with the same error: java.io.IOException: Cannot run program "hg" (in directory "/var/lib/hudson/jobs/jobname/workspace"): java.io.IOException: error=2, No such file or directory at java.lang.ProcessBuilder.start(ProcessBuilder.java:460) at hudson.Proc$LocalProc.<init>(Proc.java:192) at hudson.Proc$LocalProc.<init>(Proc.java:164) at hudson.Launcher$LocalLauncher.launch(Launcher.java:639) at hudson.Launcher$ProcStarter.start(Launcher.java:274) at hudson.Launcher$ProcStarter.join(Launcher.java:281) at hudson.plugins.mercurial.MercurialSCM.joinWithPossibleTimeout(MercurialSCM.java:298) at hudson.plugins.mercurial.HgExe.popen(HgExe.java:191) at hudson.plugins.mercurial.HgExe.tip(HgExe.java:171) at hudson.plugins.mercurial.MercurialSCM.calcRevisionsFromBuild(MercurialSCM.java:254) at hudson.scm.SCM._calcRevisionsFromBuild(SCM.java:304) at hudson.model.AbstractProject.calcPollingBaseline(AbstractProject.java:1183) at hudson.model.AbstractProject.checkout(AbstractProject.java:1172) at hudson.model.AbstractBuild$AbstractRunner.checkout(AbstractBuild.java:499) at hudson.model.AbstractBuild$AbstractRunner.run(AbstractBuild.java:415) at hudson.model.Run.run(Run.java:1362) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46) at hudson.model.ResourceController.execute(ResourceController.java:88) at hudson.model.Executor.run(Executor.java:145) Caused by: java.io.IOException: java.io.IOException: error=2, No such file or directory at java.lang.UNIXProcess.<init>(UNIXProcess.java:148) at java.lang.ProcessImpl.start(ProcessImpl.java:65) at java.lang.ProcessBuilder.start(ProcessBuilder.java:453) Running on Debian 6.0.1 I wonder if anyone has ran into this before, and hopefully solved it?

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• Team Foundation Server 2008 - TF220056 Error during installation

  - by David

  I'm attempting to install Team Foundation Server 2008 on a Windows Server 2003 instance that exists under Hyper-V. The SQL Server database itself is held on the root partition of the Hyper-V server and has the Reporting Services installed (so I've solved the TF220059 error already). After hitting "Next " after typing the name of the SQL Server I get this error: --------------------------- Microsoft Visual Studio 2008 Team Foundation Server Setup --------------------------- TF220056: An unrecoverable error occurred while trying to check the status of the Team Foundation database. Installation cannot continue. Check the install log for more details. --------------------------- OK --------------------------- The error log's stack trace makes it look like a bug in the TFS installer itself: [03/22/10,19:14:42] TFSUI: [2] tfsdb.exe: System.IO.IOException: The directory name is invalid. [03/22/10,19:14:42] TFSUI: [2] tfsdb.exe: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) [03/22/10,19:14:42] TFSUI: [2] tfsdb.exe: at System.IO.__Error.WinIOError() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at System.IO.Path.GetTempFileName() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at Microsoft.TeamFoundation.DatabaseInstaller.CommandLine.Commands.InstallerCommand.get_Log() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at Microsoft.TeamFoundation.DatabaseInstaller.CommandLine.Commands.InstallerCommand.Run() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at Microsoft.TeamFoundation.DatabaseInstaller.CommandLine.CommandLine.RunCommand(String[] args) [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: The directory name is invalid. [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe check failed with error code: 100 I'm running the installer as the domain Administrator, although the server is a Terminal Server in Application Mode, might that be the cause of the problems?

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• How do I increase the buffer size for domain sockets in OS X 10.6

  - by Chas. Owens

  In Linux I have no problem dumping tons of data into a domain socket, but the same code on OS X 10.6.2 blows up after about 65 records. The socket reader code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; unlink "foo"; my $sock = IO::Socket::UNIX->new ( Local => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; while (<$sock>) { chomp; print "[$_]\n"; } And the client code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; my $sock = IO::Socket::UNIX->new ( Peer => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; for my $i (1 .. 1_000_000) { print $sock "$i\n" or die $!; } close $sock; The error message I get is No buffer space available at write.pl line 15.. It seems fairly obvious that there is a difference in the buffer size between Linux and OS X, but I don't know how to set it OS X (or what the possible negative side effects might be).

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