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• JVM specification and Java compiler code useful for SCJP preparation ?

  - by BenoitParis

  I'm preparing the SCJP exam with the almost official study book ("SCJP Sun Certified Programmer for Java 6 Exam 310-065") I understand that Java programming is writting code that fulfills a certain high-level contract; So that Java can stay platform-independent. However, I have trouble understanding and remembering things when it comes to highly specific SCJP items (and they are numerous) The book stays high-level and does not provide examples of how one compiler would handle things. This is the same thing for runtime issues (JVM level): things are too much abstract for me. Rules often seems arbitrary and therefore, with no well defined purpose, are difficult to remember. Or maybe it's that sometimes I just don't get the underlying purpose. And here is the question: Would a JVM specification and/or some java compiler code help in preparing the SCJP? Have you had the need for such material or is the book sufficient enough? Also, please share the resources you used, apart from the book.

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• Browser extensions to re-render the page using an updated version of my CSS file, without reloading the page itself

  - by Eduardo León

  I want to learn Web UI design. (I know, I know. Being a programmer puts me at a disadvantage. But I want to try anyway.) Thus, I would like to "debug" my CSS files. Once of the biggest annoyances I have found is that I cannot test a change in my CSS files without reloading the whole page. Sometimes, the page is too big. Sometimes, a lot of elements were brought to the page after lots of clicks, because my pages rely too heavily on AJAX. Sometimes, I just hate hitting Command+R all the time. Is there any extension for any of the major browsers (preferably Safari and/or Chrome) that re-renders the page using an updated version of the CSS file, without reloading the whole page itself?

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• If I add a public method to a C# class, do I need to recompile other assemblies using that type?

  - by Adal

  Question in the title. I'd like to avoid recompiling since the source code I'm modifying is third party and I'd like to use the original binaries where possible, and replace only the assembly which contains the class I modified. But I'm not sure if this is a safe thing to do. In C++ for example this is definitely a bad idea.

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• What do you tell people your profession is? [closed]

  - by user110296

  My technical title is Member of the Technical Staff, and like you most of you, I design/write code for a living. I can never decide what to answer when someone asks what I do for a living? Software Developer? Software Engineer? [Kernel] Programmer? Computer Scientist? These all seem to have various bad connotations. I guess I like Software Engineer the best, but unfortunately this term has been coopted by people who don't actually code. I made the mistake of taking a 'Software Engineering' class, and realized that I definitely don't want to be associated with people who major in this. Probably this is too subjective, so feel free to community wiki it or whatever, but I think it is a valid question and I would like to hear what others have decided on and their reasoning.

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• Convince teammates to follow standards

  - by folone

  There's always one or two guys, who think, they are great programmers, and they don't need any literature/specifications/etc. They usually write awful code, that makes you want to hurt them. They catch and suppress Throwable's, return null's, concatenate String's in large loops, do other stupid stuff. So the question is — How do I make such a person follow best practices and specifications? He does not listen (cause he's the best programmer), team lead does not give a damn ("It actually works, so why changing it?.."), and I'm actually tired of rewriting that awful code on my own. What do I do? What would you do?

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• Lambda recursive PHP functions.

  - by Kendall Hopkins

  Is it possible to have a PHP function that is both recursive and anonymous (lambda). This is my attempt to get it to work, but it doesn't pass in the function name. $factorial = function( $n ) use ( $factorial ) { if( $n == 1 ) return 1; return $factorial( $n - 1 ) * $n; }; print $factorial( 5 ); I'm also aware that this is a bad way to implement factorial, it's just an example.

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• countering a div opacity?

  - by Jason94

  If I have a div that acts like a box, and I make it real sexy with 10% opacity. How do I counter it since everything in the div also gets the opacity. Lets say i have a box(div) with a 1px border and text, putting opacity on it will make it look bad and i only want opacity on the background.

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• Is it better to adopt the same technologies used at work to be effective on your home projects ?

  - by systempuntoout

  Is it better to start developing an home project using the same technologies used at work to be more productive and effective? I'm not talking about a simple hello world web page but an home project with all bells and whistles that one day, maybe, you could sell on internet. This dilemma is often subject of flames between me and a friend. He thinks that if you want to make a great home-made project you need to use the same technologies used daily at work staying in the same scope too; for example, a c++ computer game programmer should develope an home-made c++ game. I'm pretty sure that developing using the same technologies used at work can be more productive at beginning, but surely less exciting and stimulating of working with other languages\ides\libraries out of your daily job. What's your opinion about that?

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• Using c#,c/c++ or java to improve BBN with GA

  - by madicemickael

  I have a little problem in my little project , I wish that someone here could help me! I am planning to use a bayesian network as a decision factor in my game AI and I want to improve the decision making every step of the way , anyone knows how to do that ? Any tutorials / existing implementations will be very good,I hope some of you could help me. I heard that a programmer in this community did a good implementation of this put together for poker game AI.I am planning to use it like him ,but in another poker(Texas) or maybe Rentz. Looking for C/c++ or c# or java code. Thanks , Mike

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• C++ using this pointer in constructors

  - by gilbertc

  In c++, during a class constructor, I started a new thread with 'this' pointer as a parameter which will be used in the thread extensively (say, calling member functions). Is that a bad thing to do? Why and what are the consequences? Thanks, Gil.

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• Help me refactor this nasty Ruby if/else statement

  - by Suborx

  Hello, so I have this big method in my application for newsletter distribution. Method is for updating rayons and I need to assign a user to rayon. I have relation n:n through table colporteur_in_rayons which has attributes since_date and until_date. I am a junior programmer and I know this code is pretty dummy :) I appreciate every suggestion. def update rayon = Rayon.find(params[:id]) if rayon.update_attributes(params[:rayon]) if params[:user_id] != "" unless rayon.users.empty? unless rayon.users.last.id.eql?(params[:user_id]) rayon.colporteur_in_rayons.last.update_attributes(:until_date => Time.now) Rayon.assign_user(rayon.id,params[:user_id]) flash[:success] = "Rayon #{rayon.name} has been succesuly assigned to #{rayon.actual_user.name}." return redirect_to rayons_path end else Rayon.assign_user(rayon.id,params[:user_id]) flash[:success] = "Rayon #{rayon.name} has been successfully assigned to #{rayon.actual_user.name}." return redirect_to rayons_path end end flash[:success] = "Rayon has been successfully updated." return redirect_to rayons_path else flash[:error] = "Rayon has not been updated." return redirect_to :back end end

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• How to merge after reverting in mercurial?

  - by user281180

  I have had a bad merge. Now I want to start the merge all over again. I did a revert just before the merge. Now when im trying to add the bundle , im having the message and it can no more locate the changes. What is wrong? Why isn`t it finding any change? c:\Documents and Settings\Shamima\Desktop\New Folder\test_rev94_to_tip_hg\test_rev94_to_tip.hg searching for changes no changes found [command completed successfully Tue Apr 13 16:10:37 2010]

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• vim regex for replacing spaces within quotes

  - by vikram-bhat

  I have text in the follwing format: ERR_OUT_OF_MEM, "ERR OUT OF MEM" ERR_SOMETHING_BAD, "ERR SOMETHING BAD" I want to replace all spaces in the text which are within quotes with underscores: ERR_OUT_OF_MEM, "ERR_OUT_OF_MEM" ERR_SOMETHING_BAD, "ERR_SOMETHING_BAD" The best regex I could come up with is: \("\w\+\)\@<= (there's a space at the end of that) but this only finds the first space in each quoted string, and I would need to repeat this multiple times to get the desired effect. Any way to do it in one shot? Thanks!

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• 8 bit music type can play in Assembler 16 bit PC?

  - by Royee

  If it's avilable, how i can do that? OS:Windos. Sorry on the bad English..

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• Which Visual Studio 2010 edition for sole developer

  - by bufferz

  I am the sole .net developer for a small company. My projects span many .net technologies including WinForms, WPF, SQL, XNA, Linq, WCF, WTF?, and others. I struggle staying on top of all these projects so I'm looking to make my life easier with the release of VS2010. Without a mentor I rely heavily on StackOverflow and whatever else Google comes up with. Should I convince my company to get an edition with an MSDN subscription? Is it one of those things where once you have it, you can't imagine life without it? What about the source control that comes with VS2010, do you all find it better than an SVN server? We're looking to hire another programmer this year, would I be best off getting a Team edition of VS2010 to be best prepared for that hire? Thanks!

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• What exactly do "IB" and "UB" mean?

  - by cHao

  I've seen the terms "IB" and "UB" used several times, particularly in the context of C++. I've tried googling them, but apparently that two-letter combination sees a lot of use. :P So, i ask you...what does it mean, if it's said like it's a bad thing?

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• cakephp or ruby on rails

  - by dole doug

  Hi there I've put some of my free time on reading/learning about cakephp but now I'm wondering if will not be better to switch completely to ruby on rails. Can you give me the good and the bad of those tools, when is about web-development? many thx

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• How to find where program crashed

  - by Mick

  I have a program that crashes (attempting to read a bad memory address) while running the "release" version but does not report any problems while running the "debug" version in the visual studio debugger. When the program crashes the OS asks if I'd like to open up the debugger, and if I say yes then I see an arrow pointing to where I am in a listing of some assembler which I am not skilled enough to read properly (I learned 6502 assembler 30 years ago). Is there any way for my to determine where in my sourcecode the offending memory read was located?

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• what the best and simplest way to find out whether a volume need defrag?

  - by r9r9r9

  I am writing a application that monitor the system's health, user should know when they need to defrag the volumes. What I am thinking is calling the "defrag.exe /A" then analyze the output result to see whether it contains "You do not need to defragment this volume." But it's slow and very bad, I fount that the "Analyze" is really quick on the MyDefrag.exe. Anyone could tell me what's the best and simplest way?

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• What wiki tools exist to generate shippable user doc from a wiki?

  - by tletnes

  I am looking into using a wiki (prefer mediawiki, but not a req.) as the repository for developer generated documentation (User Guides, Release Notes, Application Notes, Errata, etc.) from a collaborative/easy-to-update point of view a wiki seems like a good match, however since this documentation will ultimately ship to customers we want to be able to export the documents in their final state (e.g. during the release cycle) to static versions that no longer include histories. Ideally the export would leave the document n a form where errors could be easily fixed by a non-programmer It would be good if niceties like section ordering and table of contents were available, or easy to add after the fact. Are any tools with features like these avalible?

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• How to abandon a hg merge?

  - by Grumdrig

  I'm new to collaborating with Mercurial. My situation: Another programmer changed rev 1 of a file to replace 4-space indents with 2-space indent. (I.e. changed every line.) Call that rev 2, pushed to the remote repo. I've committed substantive changes rev 1 with various code changes in my local workspace. Call that rev 3. I've hg pulled and hg merged without a clear idea of what was going on. The conflicts are myriad and not really substantive. So I really wish I'd changed my local repo to 2-space indents before merging; then the merge will be trivial (i'm supposing). But I can't seem to back up. I think I need to hg update -r 3 but it says abort: outstanding uncommitted merges. How can I undo the merge, changes spacing in my local repo, and remerge?

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• ASP.NET: Using Session to store authentication?

  - by Niels Bosma

  I'm having a lot of problems with FormsAuthentication (http://stackoverflow.com/questions/2964342/problem-with-asp-net-authentication) and as as potential work around I'm thinking about storing the login in the Session? Login: Session["Auth.ClientId"] = clientId; IsAuthenticated: Session["Auth.ClientId"] != null; Logout; Session["Auth.ClientId"] == null; I'm not really using most of the bells and whistles of FormsAuthentication anyway. Is this a bad idea?

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• Where does abort() and terminate() "live"?

  - by user325016

  Regarding the terminate handler, As i understand it, when something bad happens in code, for example when we dont catch an exception, terminate() is called, which in turn calls abort() set_terminate(my_function) allows us to get terminate() to call a user specified function my_terminate. my question is: where do these functions "live" they don't seem to be a part of the language, but work as if they are present in every single cpp file, without having to include any header file.

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• Mercurial & Windows Server 2003

  - by tjsimmons

  Hi all, I just set up Mercurial on our main webserver, hosting repositories via hgwebdir.cgi. The problem I'm having now is when I run hg push from my local machine to the server's repository, it takes an absolutely ridiculous amount of time to push a very small directory, with only a single changeset. Is it possible that I've set something up wrong? I keep getting HTTP Error 502: Bad Gateway. Thanks!

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• PHP - why is this date function not erroring out

  - by Phill Pafford

  function convertDT($TS) { $TS = strtotime($TS); $TS -= date("Z"); $newTS = date("Y-m-d\TH:i:s\Z", $TS); return $newTS; } echo "Good: ".convertDT('2010-04-20 01:23:45')."\n"; echo "Bad: ".convertDT('2010-31-20 01:23:45')."\n"; The second date returns: 1969-12-31T23:00:00Z Why? Should this error?

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