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• Why is J2ee/EJBs a dying Trend?

  - by Taranfx

  I might be wrong on this, but I no longer see heavy Business and Web services being hosted using J2ee technologies (Especially EJBs). Having known the power and scalability of J2ee applications, what is keeping developers/decision makers to restrict themselves to Core Java (POJOs) or even other web technologies like PHP, python. Is it the development time? Is it the Ease of configuration? (I feel this should not be a strong reason with Java EE 6, things are simplified) Of course scripting languages are faster to develop, we cannot ignore the fact that they are inherently not-as-scalable as Java Applications are (using App servers)

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• Program received signal from GDB: EXC_BAD_ACCESS

  - by user577185

  Well, I'm starting development on the Mac OS X this code that you'll see is in a book that I bought, really basic like Chapter 3. And I can't run it. PLEASE HELP ME: C301.m : #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { if (argc == 1) { NSLog (@"You need to provide a file name"); return -1; } FILE *wordFile = fopen("tmp/words.txt", "r"); char word[100]; while (fgets(word, 100, wordFile)) { word[strlen(word) - 1] = '\0'; NSLog(@"%s is %d characters long", word, strlen(word)); } fclose(wordFile); return 0; } //main The file is in its place. Thank you so much!

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• ExternalInterface.addCallback doesn't work on firefox??

  - by dome

  i'm trying to call a method inside a flash movie from js, every time the mouse leaves the "div". It works on Internet Explorer, but not in firefox. any ideas? here is the html script: <script type="text/javascript"> window.onload = function(e){ init(); } function init(){ document.getElementById('div').onmouseout = function(e) { method(); } } function method(){ flashid.anothermethod(); } </script> and the flash script: import flash.external.ExternalInterface; function outdiv(){ //do something; } ExternalInterface.addCallback('anothermethod', outdiv); Any ideas what's wrong?

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• Interacting with RESTful API's via Javascript?

  - by Alex

  Hi there, to start off, I know C++, C#, Python, some Ruby, and basic Javascript. Anyway, my question revolves around how to interact with RESTful API's via Javascript. I haven't been able to find any good examples on various websites, and so I've come here. So my basic question is: How do I interact with RESTful API's via JS? And where can I find out how to implement OAuth in JS? I know how to get my keys and such, just not how to actually code them in. Below is an example of a twitter API status update run from my MAC terminal with curl: curl -u username:password -d "my tweet" http://api.twitter.com/1/statuses/update.json How can I implement this in Javascript (preferably with OAuth authentication)? This would at least start me going in the right direction. Thanks so much!!

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• Can you help me think of problems for my programming language?

  - by I can't tell you my name.

  I've created an experimental toy programming language with a (now) working interpreter. It is turing-complete and has a pretty low-level instruction set. Even if everything takes four to six times more code and time than in PHP, Python or Ruby I still love programming all kinds of things in it. So I got the "basic" things that are written in many languages working: Hello World Input - Output Countdowns (not as easy as you think as there are no loops) Factorials Array emulation 99 Bottles of Beer (simple, wrong inflection) 99 Bottles of Beer (canonical) Conjatz conjecture Quine (that was a fun one!) Brainf*ck interpreter (To proof turing-completeness, made me happy) So I implemented all of the above examples because: They all used many different aspects of the language They are pretty interesting They don't take hours to write Now my problem is: I've run out of ideas! I don't find any more examples of what problems I could solve using my language. Do you have any programming problems which fit into some of the criteria above for me to work out?

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• Which offer to pick?

  - by Shawn

  OK. This is kinda silly, but I'd really like to hear what you guys say. Here is the thing: I used to be an php developer and started looking for jobs 3 weeks ago and now I got 2 offers at hand. If I took the first one what I do would be 100% in PHP - simply dev works on a ecommerce project. If I go with the second one, the projects would be in python which I didn't have too much experiences on and is kinda exited about the new stuff I'm going to learn. But wait, the first offer gives more money(1k plus) and that's why I'm still hesitating and troubling you guys.) If you were me, which one would you pick? I know there could be other factors to be considered like 'which position is closer to your home so you could take good care of your dog', well let's forget about those things for now.

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• Use gmail domain account with IMAP authentication with SAML authentication not working...

  - by mscd000

  I have a python script that interfaces gmail accounts and allows searches, etc. This works on normal emails (ending on @gmail.com) but not on domain accounts. In this case authentication is done via SAML, and IMAP is enabled on the gmail domain account... The instructions from google on how to configure IMAP only seem to work for @gmail.com accounts... I've tried authentication to IMAP using user, user@admin and using host: imap.gmail.com as well as my domain's email and authentication is not working.... is there a specific 'host' from gmail for domain accounts? other way to get imap on gmail domain accounts? Thanks, Rodolfo

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• Emacs key binding in Eclipse IDE

  - by Peter Delaney

  Hello; I am an Emacs lover probably because I love the key binding and I am able to do things very quickly. I also use Eclipse IDE for my Java/Android/Python/ development because it is free, most of my peers use it, and it works. I find myself switching between emacs and Eclipse and the workflow just isn't great. What I would like to do is setup the key bindings in Eclipse so that they are like Emacs. Can someone suggest the best Eclipse plugin I could use for this. Or can anyone talk about how they've used Eclipse to be more Emacs like. Thanks in advance

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• Hidden features of x86 assembly

  - by Earlz

  I am still a fan of x86 assembly(sorta) and know a lot of developers still using x86 assembly, although by far there are very few features available in assembly, let us list out the most useful and not so well known ones. Of course the question is on the lines of the Hidden Features questions listed below.: Hidden Features of JavaScript Hidden Features of CSS Hidden Features of C# Hidden Features of VB.NET Hidden Features of Java Hidden Features of ASP.NET Hidden Features of Python Hidden Features of TextPad Hidden Features of Eclipse Hidden Features of Classic ASP Please specify one feature per answer. Also, you can specify all bits of the x86 such as 16bit(real mode), 32bit, and 64bit. Please keep it neutral of assembler though. Both Intel and AT&T syntax is welcome but please don't for example demonstrate a useful macro feature for yasm.

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• Creating a web-service client directly from the source

  - by ben

  Hi, I am trying to generate the WS client jar directly from the @Webservice class(es). Let's take this example : package com.example.maven.jaxws.helloservice; import javax.jws.WebService; @WebService public class Hello { public String sayHello(String param) { ; return "Hello " + param; } } I can generate a war file and use glassfish to serve this webservice, and from there I can use the glassfish WSDL URL to generate the client sources. What I am trying to do is to skip the glassfish part. From my maven project defining the webservice, I would like to use the jaxws-maven-plugin to create the client classes but I cannot find any way to specify the actual URL of the webservice. It should be possible right? @see also http://stackoverflow.com/questions/2097789/creating-a-web-service-client-with-a-known-but-inaccessible-wsdl

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• PyQt: How to keep QTreeView nodes correctly expanded after a sort

  - by taynaron

  I'm writing a simple test program using QTreeModel and QTreeView for a more complex project later on. In this simple program, I have data in groups which may be contracted or expanded, as one would expect in a QTreeView. The data may also be sorted by the various data columns (QTreeView.setSortingEnabled is True). Each tree item is a list of data, so the sort function implemented in the TreeModel class uses the built-in python list sort: self.layoutAboutToBeChanged.emit() self.rootItem.childItems.sort(key=lambda x: x.itemData[col], reverse=order) for item in self.rootItem.childItems: item.childItems.sort(key=lambda x: x.itemData[col], reverse=order) self.layoutChanged.emit() The problem is that whenever I change the sorting of the root's child items (the tree is only 2 levels deep, so this is the only level with children) the nodes aren't necessarily expanded as they were before. If I change the sorting back without expanding or collapsing anything, the nodes are expanded as before the sorting change. Can anyone explain to me what I'm doing wrong? I suspect it's something with not properly reassigning QModelIndex with the sorted nodes, but I'm not sure.

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• Safest way to copy a file

  - by aron

  Hello, I need to merg two PDF files. However sometimes a file might be locked up I wrote this code, but I'm wondering if it's not the smartest solution: private static int FILE_LOCKED_WAIT_PERIOD = 1000; while (true) { // If the file is in use, IOException will be thrown. // If file is not permitted to be opened because of Permission // Restrictions, UnauthorizedAccessException will be thrown. // For all other, Use normal Exception. try { inputDocument1 = PdfReader.Open(fileToMerge, PdfDocumentOpenMode.Import); break; } catch (IOException) { Thread.Sleep(FILE_LOCKED_WAIT_PERIOD); } catch (UnauthorizedAccessException) { Thread.Sleep(FILE_LOCKED_WAIT_PERIOD); } catch (Exception) { Thread.Sleep(FILE_LOCKED_WAIT_PERIOD); } }

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• Grails Unit Tests: Why does this statement fail?

  - by leeand00

  I've developed in Java in the past, and now I'm trying to learn Grails/Groovy using this slightly dated tutorial. import grails.test.* class DateTagLibTests extends TagLibUnitTestCase { def dateTagLib protected void setUp() { super.setUp() dateTagLib = new DateTagLib() } protected void tearDown() { super.tearDown() } void testThisYear() { String expected = Calendar.getInstance().get(Calendar.YEAR) // NOTE: This statement fails assertEquals("the years dont match and I dont know why.", expected, dateTagLib.thisYear()) } } DateTagLibTests.groovy (Note: this TagLibUnitTestCase is for Grails 1.2.1 and not the version used in the tutorial) For some reason the above test fails with: expected:<2010 but was:<2010 I've tried replacing the test above with the following alternate version of the test, and the test passes just fine: void testThisYear() { String expected = Calendar.getInstance().get(Calendar.YEAR) String actual = dateTagLib.thisYear() // NOTE: The following two assertions work: assertEquals("the years don\'t match", expected, actual) assertTrue("the years don\'t match", expected.equals(actual)) } These two versions of the test are basically the same thing right? Unless there's something new in Grails 1.2.1 or Groovy that I'm not understanding. They should be of the same type because the values are both the value returned by Calendar.getInstance().get(Calendar.YEAR)

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• Using Linux vs Windows for development

  - by Philipp Lenssen

  On my servers I run everything on Linux/ Apache, but for offline preparation before upload of the projects I'm using Windows (Vista) with a local Apache/ WAMP, PHP, Python, GD_image installation and so on. My question, would it be much easier in terms of setting up a good environment if I were to use Linux, e.g. Ubuntu distribution, as development OS for these things? Would you know some pros and cons when it comes to Windows vs Linux in terms of web development? (As I'm using mostly web apps these days, switching the OS might be less of a problem. I would need a good replacement for my image editor, though, as I prefer Corel PhotoPaint and PSP4 over Gimp, last time I tried.)

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• What should I learn after HTML and CSS?

  - by Ryan B

  I am 5 days into learning how to make my website, flying through my HTML & CSS book and having fun. I’m starting to consider what to order next. I’m not sure what to study next, so please give me some advice if you can. My end goal is to create a site that has a lot of the functionality that www.edufire.com and similar sites have, just for example. I think I’m learning well with the Head First Series, and the style will probably serve me well as an intro to programming. However, I don't think the books dive too deeply into any 1 subject. I could order: A: Head First Programming: A Learner’s Guide to Programming Using the Python Language B: Head First Javascript C: Head First PHP & MySQL D: a different programming book or E: another CSS or design book to solidify my basic HTML & CSS skills Any guidance would be appreciated. Thanks!

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• Programmer's editor or IDE for C code

  - by Yktula

  I feel like this question has been repeated here, but I couldn't find it. What open-source programmer's editor or IDE is best for writing code in C? A GUI and integration with Clang for static code analysis or git for version control would be convenient, but aren't necessary. I would ideally use two editors: one feature-filled IDE and one with a small memory footprint, but editors like jEdit, Geany, Diakonos, nano, etc. don't satisfy many of my needs, which include: Good support for refactoring and code completion. Extensibility in C or a "modern" scripting language (i.e. Ruby or Python) Relatively good performance and lack of bloated-ness

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• Who does non-decimal bignums with floating radix point?

  - by boost

  Nice as the Tcl libraries math::bignum and math::bigfloat are, the middle ground between the two needs to be addressed. Namely, bignums which are in different radices and have a radix point. At present math::bignum only handles integers (afaict) and math::bigfloat won't let you specify different radices to math::bigfloat::fromstr (ditto). Does anyone know of a library, for any of the major scripting languages (e.g. Tcl, Perl, Python, Ruby, Lua) or less major ones (newLISP for example), which implements bignums in different radices with handling for radix point?

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• popen fails with "sh: <command>: not found"

  - by smallmeans

  I'm developing a server application and I recently encountered this wierd error on a testing server (Debian Squeeze). Every executable I pass to popen fails with a msg: sh: sort: not found // happens to any command This happens regardless whether I point to the full path returned by "type" or keep it short . As mentioned earlier, this happens at only one testing environment, to add confusion, am running the same OS and had no problem whatsoever. Popen is apparently using sh to execute commands, but if I run the same command thru the prompt (bash or sh), everything's fine Thanks in advance (PS: even tried Python os.popen just to nail this head scratcher, and it works!) Edit this is a simple call that fails: $command="tail -10 myfile"; $handle = popen($command.' 2>&1','r'); if($handle){ while (!feof($handle)){ ....//process buffer } } returns: sh: tail: not found

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• Xcode & passing command line arguments

  - by Brisco

  I just started working with C & Xcode and I've run into a little difficulty. All I want to do is read a file from the command line and see the output in the terminal. I think my problem lies with the path to the file that I want to read in. I'm using a Mac and the file is on my desktop, so the path should be Users/myName/Desktop/words.txt. Is this correct? This is my code: #import <Foundation/Foundation.h> int main (int argc, const char* argv[]){ if(argc == 1){ NSLog(@" you must pass at least one arguement"); return 1; } NSLog(@"russ"); FILE* wordFile = fopen(argv[1] , "r"); char word[100]; while (fgets(word,100,wordFile)) { NSLog(@" %s is %d chars long", word,strlen(word)); } fclose(wordFile); return 0; }//main

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• Cross-Page communication in firefox extension

  - by OzBarry

  I have two tabs that my extension uses and I wanted to pass events back and forth between them. I've already developed a Google Chrome extension that does this via the background page api, but there doesn't seem to be an equivalent in firefox. I thought message-manager in the firefox extension docs would do the trick, but the documentation on the object is quite poor. I'd be just as happy with using one of the tabs to control the other if I can't directly import the ideas of a background page from google chrome api. Any help/guidance would be great.

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• What is a header? Especially, what are POST@GET headers?

  - by brilliant

  Hello, I've been trying to find a Python code that would log in to my Yahoo account from "Google App Engine". One supporter on "StackOverflow" gave me this three-step plan: Simulate normal login and save login page that you get; Save POST&GET headers with "Wireshark"; Compare login page with those headers and see what fields you need to include with your request; The problem here is that I have never used "Wireshark" before. Plus, I don't know what the POST&GET headers are. Can You, please, explain it to me (preferably with some example). Thank You.

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• Rake don't know how to build task?

  - by Schroedinger

  Using a rake task to import data into a database: file as follows namespace :db do desc "load imported data from csv" task :load_csv_data => :environment do require 'fastercsv' require 'chronic' FasterCSV.foreach("input.csv", :headers => true) do |row| Trade.create( :name => row[0], :type => row[4], :price => row[6].to_f, :volume => row[7].to_i, :bidprice => row[10].to_f, :bidsize => row[11].to_i, :askprice => row[14].to_f, :asksize => row[15].to_i ) end end end When attempting to use this, with the right CSV files and the other elements in place, it will say Don't know how to build task 'db:import_csv_data' I know this structure works because I've tested it, I'm just trying to get it to convert to the new values on the fly. Suggestions?

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• Hashes vs Numeric id's

  - by Karan Bhangui

  When creating a web application that some how displays the display of a unique identifier for a recurring entity (videos on YouTube, or book section on a site like mine), would it be better to use a uniform length identifier like a hash or the unique key of the item in the database (1, 2, 3, etc). Besides revealing a little, what I think is immaterial, information about the internals of your app, why would using a hash be better than just using the unique id? In short: Which is better to use as a publicly displayed unique identifier - a hash value, or a unique key from the database? Edit: I'm opening up this question again because Dmitriy brought up the good point of not tying down the naming to db specific property. Will this sort of tie down prevent me from optimizing/normalizing the database in the future? The platform uses php/python with ISAM /w MySQL.

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• Error With Foundation.h

  - by Nathan Campos

  Hello, I learning Objective-C in Linux(Ubuntu), but when i tryed to compile my application that needs the Foundation headers i got an error saying that the file cannot be found, but i have installed the GNUstep development package(gnustep-devel). Here is my code: // Fraction.h #import <Foundation/NSObject.h> @interface Fraction: NSObject { int numerator; int denominator; } - (void) print; - (void) setNumerator: (int) n; - (void) setDenominator: (int) d; - (void) numerator; - (void) denominator; @end And here is the console log: ubuntu@eeepc:~$ gcc main.m -o frac -lobjc In file included from main.m:3: Fraction.h:2:26: error: objc/NSObject.h: No such file or directory In file included from main.m:3: Fraction.h:4: error: cannot find interface declaration for ‘NSObject’, superclass of ‘Fraction’ ubuntu@eeepc:~$ What i need to do?

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• Continous integration with .net and svn

  - by stiank81

  We're currently not applying the automated building and testing of continous integration in our project. We haven't bothered this far as we're only 2 developers working on it, but even with a team of 2 I still think it would be valuable to use continous integration and get a confirmation that our builds don't break or tests start failing. We're using .Net with C# and WPF. We have created Python-scripts for building the application - using MSbuild - and for running all tests. Our source is in SVN. What would be the best approach to apply continous integration with this setup? What tool should we get? It should be one which doesn't require alot of setup. Simple procedures to get started and little maintanance is a must.

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