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• Java EE without Application Server

  - by deamon

  Since EJB 3 we have embeddable EJB containers, JPA implementations can be used without an application server, there is Weld for contexts and dependency injection and so on. Since on many systems is only Tomcat available, I wonder, if Java EE could be used without an application server but with a Servlet container like Tomcat. What would I have to do to set up an Java environment? What drawbacks do you see?

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• Software industry sector sizes

  - by rwallace

  Are there statistics or even estimates anywhere regarding the sizes of the various sectors of the software industry (e.g. desktop, systems, embedded, business, games etc.)?

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• What are the differences between GIT and SVN when it comes to merge conflicts solving.

  - by chalup

  I keep hearing that branching in git is so much easier than in SVN, because it's easier to merge the branch back to trunk/master. I've read some tutorials, but they only covered basic merge conflicts ("Alice changed line 8 of code.cpp and at the same time Bob changed line 8 of code.cpp...") and there are no differences between SVN and all other distributed source control systems. Can you give me the examples of changes in branch that would cause troubles in SVN repository, but would be handled gracefully by git?

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• Persist header data across reply emails

  - by mickyjtwin

  Am trying to determine the best way to persist information from an originating email, through to a reply back. Essentially, it is to pass a GUID from the original email (c#), whereby when the receiver replies back, that GUID is also sent back for reference. I have tried setting the MessageID, whereby using Outlook, the In-Reply-To value is set with the original ID, however using some webclient email systems, that value is not created on reply. Is there another way to sent this info through email headers?

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• SSO possible with LDAP-backed web applications?

  - by rutherford

  I have a client who wants their wordpress and google apps user accounts accessible using SSO, ie if they log in on one app domain google.client.com they will be logged into wordpress.client.com too without extra steps. The same LDAP directory will be used to do backend authentication for both systems. Is it possible to setup SSO for LDAP-backed webapps?

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• Most Astonishing Violation of the Principle of Least Astonishment

  - by Adam Liss

  The Principle of Least Astonishment suggests that a system should operate as a user would expect it to, as much as possible. In other words, it should never "astonish" the user with unexpected behavior. In your experience as the "astonishee," what types of systems are the worst offenders, and if you were the project manager, how would you correct the problem? Bonus if your answer describes how you'd retrain the developers!

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• Which is more appropriate for pbx events, TIdTCPServer or TIdTCPClient?

  - by vfclists

  I am trying out some IP PBX systems, Asterisk, Freeswitch, and Yate,to register for events in the PBX, and I want to know which of these components is the better one. The component is supposed to register with the PBX for events, receive them, send some responses and issues some commands. Which of the two would be the more appropriate?

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• C# Data Export Framework or tools.

  - by abmv

  Is there any data export framework in .net or something.I have need to device a tool kit to export legacy and data from older/legacy application to the new application under development,there are around three similar systems.To give you an idea the three have employee table.Is there any framework or dsl tool for this? Or I have to come up with all the code? How do you guys do it when you have customers whom you want to migrate to the new product ?

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• C# Data Export Framwork or tools.

  - by abmv

  Is there any data export framework in .net or something.I have need to device a tool kit to export legacy and data from older/legacy application to the new application under development,there are around three similar systems.To give you an idea the three have employee table.Is there any framework or dsl tool for this? Or I have to come up with all the code? How do you guys do it when you have customers whom you want to migrate to the new product ?

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• Help me choose between Go and Io

  - by Robert Smith

  During the following months I'll have some spare time so I thought of picking up a new programming language.I've been reading some articles about Go and Io and both of them look interesting and very promising so I'm stuck making a decision about which one to pick up next. I'm mainly interested in distributed systems and concurrency. Any help is greatly appreciated. Thanks.

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• pagesize and its ratio to 4096

  - by osgx

  Hello Are there systems, where minimal page of memory (pagesize) has a size not divisible by 2, or by 1024, 4096? Can it be 3000 or 3500? Will any posix program break, if pagesize will be not divisible by 1024?

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• How to implement Template Inheritance (like Django?) in PHP5

  - by anonymous coward

  Is there an existing good example, or how should one approach creating a basic Template system (thinking MVC) that supports "Template Inheritance" in PHP5? For an example of what I define as Template Inheritance, refer to the Django (a Python framework for web development) Templates documentation: http://docs.djangoproject.com/en/dev/topics/templates/#id1 I especially like the idea of PHP itself being the "template language", though it's not necessarily a requirement. If listing existing solutions that implement "Template Inheritance", please try to form answers as individual systems, for the benefit of 'popular vote'.

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• How to print a web page without using the WebBrowser control

  - by Martin Wiboe

  Hi there, We are using a client application to print out grade sheets from an online application. This has been working flawlessly until the systems were upgraded to IE 8. I now receive this error (Access Denied): http://img707.imageshack.us/img707/5259/62270489.png Apparently, this is a known issue and it cannot be solved. How can I print HTML from a WinForms application without using the IE WebBrowser control? Thanks, Martin Wiboe

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• OSX Weak Linking - check if a class exists and use that class

  - by psychotik

  I'm trying to create a universal iPhone app, but it uses a class defined only in a newer version of the SDK. The framework exists on older systems, but a class defined in the framework doesn't. I know I want to use some kind of weak linking, but any documentation I can find talks about runtime checks for function existence - how do I check that a class exists?

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• Commercial video games

  - by mtwisterr

  What language are ps3 and xbox 360 game written in? Are the games written in the same language for both systems? Also is the code something you could run on a computer?

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• Is it beneficial to development to use a case-sensitive file system?

  - by Benedict Cohen

  Is there any benefit to developing on a case sensitive file system? I recently heard that Adobe products do not run on case sensitive file systems. Is developing on a case-sensitive file system the simplest way to avoid such problems?

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• Is there a CMS system that runs on Windows Azure?

  - by Phil Wright

  I am looking to build a new website using Windows Azure and SQL Azure. Does anyone know of any commerical or free CMS systems that I can use as the Web Role and that will connect and use SQL Azure as the storage?

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• Distributed sequence number generation?

  - by Jon

  I've generally implemented sequence number generation using database sequences in the past. e.g. Using Postgres SERIAL type http://neilconway.org/docs/sequences/ I'm curious though as how to generate sequence numbers for large distributed systems where there is no database. Does anybody have any experience or suggestions of a best practice for achieving sequence number generation in a thread safe manner for multiple clients?

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• How can I compile GCC as a static binary?

  - by CaCl

  How can I compile the GCC Compiler so that I can pull the entire thing over to another system and use the program? I don't mind pulling in other files as well, but is there a way to gather all the required system libs as well? The OS and Arch will remain constant across the different systems, but one may contain Slackware where the other contains Debian.

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• Nearmap architecture

  - by portoalet

  Looking at http://www.nearmap.com/, Just wondering if you can approximate how much storage is needed to store the images? (NearMap’s monthly city PhotoMaps are captured at 3cm, 5cm, 7.5cm, or 10cm resolution) And what kind of systems/architecture is suitable to deliver those data/images? (say you are not Google, and want to implement this from scratch, what would you do? ) ie. would you store the images in Hadoop, and use memcache to deliver etc ?

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• Software Engineering Papers

  - by kunjaan

  Please recommend me software engineering/methodology/practices paper. So far I have enjoyed: 1968 Dijkstra : Go To Statement Considered Harmful Nikalus Wirth : Program Development by Stepwise Refinement 1971 David Parnas : Information Distribution Aspects of Design Methodology 1972 Liskov : Design Methodology for Reliable Software Systems Extensible Language : Schuman and P Jourrand R. Balzer Structured Programming : Dahl - Hierarchical Program StructuresImplementation Patterns 1971 Jim Morris Protection in Programming Languages 1973 Bill Wulf and Mary Shaw Global Variable Considered Harmful 1974 : Lisko and Zilles ADTs

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• The usage of Cassandra's internal keyspace "system"

  - by knorv

  The default Cassandra systems keyspace system is present in all Cassandra installations. Judging from the output of the describe keyspace command the keyspace it is used partly for "persistent metadata for the local node" (LocationInfo) and partly for "hinted handoff data". What persistent metadata for the local node is stored in system/LocationInfo? What is the definition of hinted handoff in Cassandra terminology? What hinted handoff data is stored in the system keyspace?

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• how to write programs that using advanced OpenType features?

  - by Sorush Rabiee

  How could I write a simple program using OpenType tables in order to dynamically render text? please answer in : assembly , C , C++ , C# , java or Python (and a little WPF:-) or introduce libraries of them. comments and answers about text rendering system of common Operating Systems, or designing text engines compatible with unicode 5.02 protocol are welcomed.

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• Is Dropbox a valid quick-and-dirty source control solution?

  - by Yuval A

  I see many CS students who use Dropbox as an alternative to real SC systems due to its ease of use. Do you use Dropbox as a quick-and-dirty source control solution? Is this a valid use for it?

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• Changing Name Associated With Past Commits In Mercurial

  - by Sean M

  A friend recently had the occasion for a legal name change, which made me wonder about how to cope with that in a development environment, especially in regards to source control. Their legal name changed, so naturally their login name and associated identity stuff changed. If they were a team member of mine, I'd like to change the record of their past commits to the project to be consistent with their new name. Is that possible in Mercurial? In other version control systems?

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