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• Why doesn't my IDE do background compiling/building?

  - by MKO

  Today I develop on a fairly complex computer, it has multiple cores, SSD drives and what not. Still, most of the time I'm programming the computer is leasurely doing nothing. When I need to compile and run/deploy a somewhat complex project at best it still takes a couple of seconds. Why? Now that we're living more and more in the "age of instant" why can't I press F5 in Visual studio and launch/deploy my application instantly? A couple of seconds might not sound so bad but it's still cognitive friction and time that adds up, and frankly it makes programming less fun. So how could compilation be instant? Well, People tend to edit files in different assemblies, what if Visual Studio/The IDE constantly did compilation/and building of everything that I modified anytime that it might be appropriate. Heck if they wanted to go really advanced they could do per-class compilation. The compilation might not work but then it could just silently do nothing (except adding error messages to the error window). Surely todays computer could dedicate a core or two to this task, and if someone found it annoying it could be disabled by option. I know there's probably a thousand technical issues and some fancy shadow copying that would need to be resolved for this to be seamless and practical but it sure would make programming more seamless. Is there any practical reason why this scenario isn't possible? Would the wear and tear of continually writing binaries be too much? Couldn't assemblies be held in memory until deployed/run?

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• Online medical image processing grand challenges

  - by taltos

  Hello! I moved my question from stackoverflow here. I cherish the hope that I will be luckier. I'm currently working on my thesis, and I'm looking for an/some online medical image processing grand challenge(s). I already know this site but I need a challenge which has microscopic image dataset like cells, chromosomes, bacterias, viruses etc with classification or recognation objective. Like karyotyping. Maybe someone is working on this field or his university made a challenge what I'm looking for, and can help me. Thank you!

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• What is bootstrap listener in the context of Spring framework?

  - by jillionbug2fix

  I am studying Spring framework, in web.xml I added following which is a bootstrap listener. Can anyone give me a proper idea of what is a bootstrap listener? <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> You can see the doc here: ContextLoadListener Bootstrap listener to start up and shut down Spring's root WebApplicationContext. Simply delegates to ContextLoader as well as to ContextCleanupListener. This listener should be registered after Log4jConfigListener in web.xml, if the latter is used. As of Spring 3.1, ContextLoaderListener supports injecting the root web application context via the ContextLoaderListener(WebApplicationContext) constructor, allowing for programmatic configuration in Servlet 3.0+ environments. See WebApplicationInitializer for usage examples...

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• Retexturing a model via API on the web

  - by AndyMcKenna

  I'm looking at creating a site where a user could see our product and configure the options or look of it and see an image that represents that. The way I'm doing it now is if you have Piece A selected and then you choose Texture X, I have an image on the filesystem that is A with X applied to it. I just swap out my default image with that specific one. One product has 8 areas, with 10-70 pieces per area, and about 200 textures for each piece. Programming the site was pretty simple but we are getting bogged down in rendering all these pieces/textures and entering them into the system. What I would love to do is build a model and have some way to apply the textures via API and render it to the browser. I would even settle for exporting a flat image and pulling that into the browser. Is that possible with something like SolidWorks, 3DSMax, or something else? If the rendering is too time intensive it would still help to batch create all my images and use them the way I am currently.

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• Releasing a project under GPL v2 or later without the source code of libraries

  - by Luciano Silveira

  I wrote a system in Java that I want to release under the terms of GPL v2 or later. I've used Apache Maven to deal with all the dependencies of the system, so I don't have the source code of any of the libraries used. I've already checked, all the libraries were released under GPL-compatible licenses (Apache v2, 3-clause BSD, MIT, LGPL v2 and v2.1). I have 3 questions about this scenario: 1) Can I release a package with only the binaries of code I wrote, not including the libraries, and distribute only the source code I wrote? 2) Can I release a package with all the binaries, including the libraries, and distribute only the source code I wrote? 3) Can I release a package with all the binaries, including the libraries, and distribute only the source code I wrote plus the source code of the libraries licensed under the LGPL license?

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• What type of encoding can I use to make a string shorter?

  - by Abe Miessler

  I am interested in encoding a string I have and I am curious if there is a type of encoding that can be used that will only include alpha and numeric characters and would preferably shorten the number of characters needed to represent the string. So far I have looked at using Base64 encoding to do this but it appears to make my string longer and sometimes includes == which I would like to avoid. Example: test name|120101 becomes dGVzdCBuYW1lfDEyMDEwMQ== which goes from 16 to 24 characters and includes non-alphanumeric. Does anyone know of a different type of encoding that I could use that will achieve my requirements? Bonus points if it's either built into the .NET framework or there exists a third party library that will do the encoding.

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• Is it a bad idea to list every function/method argument on a new line and why?

  - by dgnball

  I work with someone who, every time they call a function they put the arguments on a new line e.g. aFunction( byte1, short1, int1, int2, int3, int4, int5 ) ; I find this very annoying as it means the code isn't very compact, so I have to scan up and down more to actually make any sense of the logic. I'm interested to know whether this is actually bad practice and if so, how can I persuade them not to do it?

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• Why does it take so long to finalize the HTML 5 spec?

  - by EpsilonVector

  I was reading this and one sentence caught my eye (emphasis mine): So Ian Hickson, XHTML’s biggest critic, fathered HTML 5, an action-oriented toddler specification that won’t reach adulthood until 2022, although some of it can be used today. Is that true? Is that really the HTML 5 development cycle? Why is it taking so long? What makes it so difficult to get right that it won't be final until 11 years from now?

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• Returning Value of Radio Button Jquery [migrated]

  - by Jerry Walker

  I am trying to figure out why, when I run this code, I am getting undefined for my correct answers. $(document).ready (function () { // var answers = [["Fee","Fi","Fo"], ["La","Dee","Da"]], questions = ["Fee-ing?", "La-ing?"], corAns = ["Fee", "La"]; var counter = 0; var $facts = $('#main_ .facts_div'), $question = $facts.find('.question'), $ul = $facts.find('ul'), $btn = $('.myBtn'); $btn.on('click', function() { if (counter < questions.length) { $question.text(questions[counter]); var ansstring = $.map(answers[counter], function(value) { return '<li><input type="radio" name="ans" value="0"/>' + value + '</li>'}).join(''); $ul.html(ansstring); var currentAnswers = $('input[name="ans"]:checked').map(function() { return this.val(); }).get(); var correct = 0; if (currentAnswers[counter]==corAns[counter]) { correct++; } } else { $facts.text('You are done with the quiz ' + correct); $(this).hide(); } counter++; }); // }); It is quite long and I'm sorry about that, but I don't really know how tostrip it down. I also realize this isn't the most elegant way to do this, but I just want to know why I can't seem to get my radio values. I will add the markup as well if anyone wants.

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• Is Java easy decompilation a factor worth considering

  - by Sandra G

  We are considering the programming language for a desktop application with extended GUI use (tables, windows) and heavy database use. We considered Java for use however the fact that it can be decompiled back very easily into source code is holding us back. There are of course many obfuscators available however they are just that: obfuscators. The only obfuscation worth doing we got was stripping function and variables names into meaningless letters and numbers so that at least stealing code and renaming it back into something meaningful is too much work and we are 100% sure it is not reversible back in any automated way. However as it concerns to protecting internals (like password hashes or sensible variables content) we found obfuscators really lacking. Is there any way to make Java applications as hard to decode as .exe counterparts? And is it a factor to consider when deciding whether to develop in Java a desktop application?

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• Why many designs ignore normalization in RDBMS?

  - by Yosi

  I got to see many designs that normalization wasn't the first consideration in decision making phase. In many cases those designs included more than 30 columns, and the main approach was "to put everything in the same place" According to what I remember normalization is one of the first, most important things, so why is it dropped so easily sometimes? Edit: Is it true that good architects and experts choose a denormalized design while non-experienced developers choose the opposite? What are the arguments against starting your design with normalization in mind?

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• PHP Script for selling software online

  - by jaypabs

  I am planning to build an ecommerce site that allow my members (including me) to upload source code and sell it online. I am thinking of creating it from scratch using codeigniter. But I am also looking for ready made script that is available online whether it is free or not. The script should have a similar functionality as binpress.com or codecanyon.net. Can anybody point to so such website that sells this kind of script? The script should be not encrypted to I can add more features if I like. Thank you

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• What are some recommended video lectures for a non-CS student to prepare for the GRE CS subject test?

  - by aristos

  Well the title kinda explains all there is to explain. I'm a non-cs student and was preparing to apply PhD programs in applied mathematics. But for my senior thesis I've been reading lots of machine learning and pattern recognition literature and enjoying it a lot. I've taken lots of courses with statistics and stochastics content, which I think, would help me if I get accepted to a program with ML focus, but there are only two CS courses -introduction to programming- in my transcript and therefore I decided to take the CS subject test to increase my chances. Which courses do you think would be most essential to have a good result from CS subject test? I'm thinking of watching video lectures of them, so do you have any recommendations?

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• Web Developer Portfolio - Role Definition

  - by GSTAR

  I'm just putting together a portfolio that lists all the websites I have developed / worked on during the past year. Now this has become quite a long list - simply because 60% of the websites I have listed are ones where I have developed certain sections of the site, or maybe re-developed a certain section of an existing site - but not actually developed the whole site. So basically you could say I made a 20-50% contribution on those particular sites. I don't want to give the false impression to a potential employer that I have actually fully developed all the sites listed on my portfolio. Therefore I am after a neat way to indicate this fact. On the websites that I have fully developed, I have put a small label next to the name which reads "Lead Developer". What would be the equivalent label to put on the sites I have partially developed, or projects where I have been amongst multiple people developing? I suppose what I'm asking is, how would you define, in 2-3 words a non-lead developer role within a project?

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• Listing Unix experience on resume.

  - by beacon

  I have been using Linux for quite a long time, and I am familiar with many Unix commands and tools. However, my only experience with Unix is through various Linux distributions. How should I communicate on my resume that I am familiar with the Unix command line even though I have never used a UNIX(R) system? It seems strange to me to list Unix when I've never used UNIX(R). Some people refer to Unix clones as *nix, but I'm afraid that might fly over the heads of some HR people.

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• why do we need to put private members in headers

  - by Simon

  Private variables are a way to hide complexity and implementation details to the user of a class. This is a rather nice feature. But I do not understand why in c++ we need to put them in the header of a class. I see some annoying downsides to this: it clutters the header from the user it force recompilation of all client libraries whenever the internals are modified Is there a conceptual reason behind this requirement? Is it only to ease the work of the compiler?

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• Should a model binder populate all of the model?

  - by Richard

  Should a model binder populate all of the model, or only the bits that are being posted? For example, I am adding a product in my system and on the form i want the user to select which sites the new product will appear on. Therefore, in my model I want to populate a collection called "AllAvailableSites" to render the checkboxes for the user to choose from. I also need to populate the model with any chosen sites on a post in case the form does not validate, and I need to represent the form showing the initial selections. It would seem that I should let the model binder set the chosen sites on the model, and (once in the controller method) I set the "AllAvailableSites" on the model. Does that sound right? It seems more efficient to set everything in the model binder but someone is suggesting it is not quite right. I am grateful for any advice; I have to say that all the MVC model binding help online seems to cite really simple examples, nothing complicated. Do I really need a GET and a POST version of a method? Can't they just take the same view model? Then I check in my model binder if it is a GET/POST, and populate all the model accordingly.

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• How do I handle priority and propagation in an event system?

  - by Peeter

  Lets say I have a simple event system with the following syntax: object = new Object(); object.bind("my_trigger", function() { print "hello"; }); object.bind("my_trigger", function() { print "hello2"; }); object.trigger("my_trigger"); How could I make sure hello2 is printed out first (I do not want my code to depend on which order the events are binded). Ontop of that, how would I prevent my events from propagating (e.g. I want to stop every other event from being executed)

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• How does copyrights apply to source code header files?

  - by Jim McKeeth

  It seems I heard that header files are not considered copyrightable since they can only be written one way (like a list of ingredients or facts). So a header file for a specific DLL will always look the same when written in a given programming language. Unfortunately I can't find any resources to back this up. So if a vendor provides an SDK with headers in one programming language, and then those headers are translated into another programming language by a third party. Does the 3rd party need permission from the vendor to provide the header translation? Who owns the copyright on the translation? Isn't it a derivative work still owned by the vendor, or is there no copyright, like a list of ingredients? Does this vary from jurisdiction to jurisdiction?

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• Thread safe GUI programming

  - by James

  I have been programming Java with swing for a couple of years now, and always accepted that GUI interactions had to happen on the Event Dispatch Thread. I recently started to use GTK+ for C applications and was unsurprised to find that GUI interactions had to be called on gtk_main. Similarly, I looked at SWT to see in what ways it was different to Swing and to see if it was worth using, and again found the UI thread idea, and I am sure that these 3 are not the only toolkits to use this model. I was wondering if there is a reason for this design i.e. what is the reason for keeping UI modifications isolated to a single thread. I can see why some modifications may cause issues (like modifying a list while it is being drawn), but I do not see why these concerns pass on to the user of the API. Is there a limit imposed by an operating system? Is there a good reason these concerns are not 'hidden' (i.e. some form of synchronization that is invisible to the user)? Is there any (even purely conceptual) way of creating a thread safe graphics library, or is such a thing actually impossible? I found this http://blogs.operationaldynamics.com/andrew/software/gnome-desktop/gtk-thread-awareness which seems to describe GTK differently to how I understood it (although my understanding was the same as many people's) How does this differ to other toolkits? Is it possible to implement this in Swing (as the EDT model does not actually prevent access from other threads, it just often leads to Exceptions)

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• Who does code coverage testing?

  - by Athiruban

  Recently, I was given an opportunity to increase the code coverage in a project based on Java Swing, MySQL and other technologies. They told me to bring the code coverage to 100%, while it was only 45% at the time I joined. I am just starting, not a professional developer, right from the beginning I felt bad even though I write and understand computer programs well. (The developed code contains a lot of technical stuff like Generics and no documentation about the code is available.) Has anyone experienced the same situation before? Please tell who is the right person to do the job.

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• What happened to Borland Delphi?

  - by Lucas

  I have the impression that Delphi isn't very popular anymore. But now at work I had to make some changes to an old Delphi program that we are still using. I used Borland Developer Studio 2006 and it was very pleasant and intuitive to work with, even though I had practically no previous exposure to it. Is Delphi still widely-used and I am simply not aware of it or are there other reasons for its decline?

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• Graduate expectations versus reality

  - by Bobby Tables

  When choosing what we want to study, and do with our careers and lives, we all have some expectations of what it is going to be like. Now that I've been in the industry for almost a decade, I've been reflecting a bit on what I thought (back when I was studying Computer Science) programming working life was going to be like, and how it's actually turning out to be. My two biggest shocks (or should I say, broken expectations) by far are the sheer amount of maintenance work involved in software, and the overall lack of professionalism: Maintenance: At uni, we were all told that the majority of software work is maintenance of existing systems. So I knew to expect this in the abstract. But I never imagined exactly how overwhelming this would turn out to be. Perhaps it's something I mentally glazed over, and hoped I'd be building cool new stuff from scratch a lot more. But it really is the case that most jobs are overwhelmingly maintenance, bug fixing, and support oriented. Lack of professionalism: At uni, I always had the impression that commercial software work is very process-oriented and stringently engineered. I had images of ISO processes, reams of technical documentation, every feature and bug being strictly documented, and a generally professional environment. It came as a huge shock to realise that most software companies operate no differently to a team of students working on a large semester-long project. And I've worked in both the small agile hack shop, and the medium sized corporate enterprise. While I wouldn't say that it's always been outright "unprofessional", it definitely feels like the software industry (on the whole) is far from the strong engineering discipline that I expected it to be. Has anyone else had similar experiences to this? What are the ways in which your expectations of what our profession would be like were different to the reality?

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• Is porting a Windows application to Mac worth it ?

  - by mikel

  I have a C# Windows application that sells for $35, and fairly regularly receive requests for a version for OS X too. I don't have any experience with Mac so far though, and so am not sure exactly how much work that would involve and if it would be worth it. If anyone's been in a similar position, it'd be very helpful to know: Roughly how many more (%) sales can you expect by porting to Mac ? Would you say it's worth the investment of a new Macbook Pro and the time of learning and porting to Objective-C ? Thanks in advance.

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• Embedded Model Designing -- top down or bottom up?

  - by Jeff

  I am trying to learn RoR and develop a webapp. I have a few models I have thought of for this app, and they are fairly embedded. For example (please excuse my lack of RoR syntax): Model: textbook title:string type:string has_many: chapters Model: chapter content:text has_one: review_section Model: review_section title:string has_many: questions has_many: answers , through :questions Model: questions ... Model: answers ... My question is, with the example I gave, should I start at the top model (textbook) or the bottom most (answers)?

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