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  • Results stored in a session - good idea?

    - by Nick
    To give a bit of background, lets say it's a generic results page, which is paginated so there are X results per page. Generally to do this, I have two queries on the page: to get the total number of results to get the results, limiting by the correct page's resultset However, recently I've been trying to cut down on the queries the site is making, and I thought one way to do this would be to only do the query if any parameters to the page have changed (except of course the page number)? This would then cache all the result id's in a session, which can be sliced when I need to return the correct resultset for that page. I was trying to look around the net to see if there are downsides of this method, but I've found very little information about it. Has anyone done this before? Is it a good idea?

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  • Steam not displaying text on wine 1.5 running on Ubuntu 12.04

    - by Jscags
    Hello fellow dwellers of askubuntu, as the title says I'm having difficulties with getting Steam to run properly. I think I have the solution but I am pretty incompetent with Ubuntu (just started using it the other day) so a step by step process would be unbelievably appreciated! Here are the links to what I think possible solutions are: [1] https://bbs.archlinux.org/viewtopic.php?id=146223 [2] http://bugs.winehq.org/show_bug.cgi?id=31374 I've tried googling how to preform the solutions such as changing the alias/script for steam (no idea what that is) to -no-dwrite or launching with wine Steam.exe -no-dwrite. The dwrite seems to be the issue in all this but I can't for the life of me figure out how to do anything about it. Any useful input is what I'm hoping for but for the brave soul who feels like typing a bit more, perhaps a step-by-step list of instructions starting from downloading Steam off the official website, would be my saving grace. If there is any more info you guys need let me know and I'll of course be happy to oblige!

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  • Engines of Loss and Gain

    - by andyleonard
    Introduction This post is the fortieth part of a ramble-rant about the software business. The current posts in this series can be found on the series landing page . This post is about winning (no really). NASCAR I like watching NASCAR races. On the surface, a race looks like a bunch of folks driving fast on a circuitous course. But there’s much more to it than that. There’s engineering and strategy and frankly, a little luck. A NASCAR race is a lot like life when you look beneath the surface. Forty-three...(read more)

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  • New perspectives in a SPARC/virtualization/cloud session at the Oracle OpenWorld

    - by Karoly Vegh
    Attending Oracle OpenWorld? You definitely should.  If you do, come see me at the "Breakthrough in Private Cloud Management on SPARC T-Series Servers" session on Wednesday at 11:45 in Moscone South 270, the right session to get the consolidation discussion running at lunch :)  I am of course going to talk about Oracle VM for SPARC (former LDoms), the performance overhead impact of virtualization, the importance of data security in the cloud, instance separation and the open potentials of verified platform and cost savings.  For more details:  https://oracleus.activeevents.com/connect/sessionDetail.ww?SESSION_ID=2590 See you there! 

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  • Why can't flowcharts or mathematical equations created in Microsoft Office and saved in .docx format be opened by LibreOffice?

    - by user33831
    I am using Ubuntu 11.10 and LibreOffice that comes with it. Before this , I was a Windows user and some of my previous documents were saved in .docx format. I tried to use LibreOffice to open those .docx file and I can view all text, however I can't view the flowchart I drew and also mathematical equations. Another issue is, if I create new flowchart with LibreOffice and save it in .docx file, when I re-open that file, I can't view those flowcharts, but those flowcharts are there, occupied space. No problem for .odt format of course. Does anyone know why this happens? Thanks in advanced.

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  • How to give parallax backgrounds more depth

    - by user28015
    I have 3 tiled images of some sort of galaxy/space in the background of a 2D Game: The first one has an alpha of 100%, the second an alpha of 80% and the last one has an alpha of 60%. I scroll the the one in the background slower than the other ones of course. classic parallax. In the foreground I have some particles flying towards the player to simulate some dust / stars flying by. (I know that stars don't fly by, but I think we all have seen this in a lot of games). But I can't quite achieve the depth effect I am looking for. I want it to look "deeper". I did read something about using blending modes for the backgrounds, but that would require to render them as objects right? So the question is: What is a good technique to do a scrolling parallax background in GameMaker?

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  • What is the order of diagram drawing in a design?

    - by Manuel Malagon
    I'm new with OOP and UML and I have some confusion here. I'd like to know where to start, I mean, somebody comes to you and ask you to do something (involves software design of course), once you have determined what has to be done, what is the order in which you have to start the software architecture? I mean, is it first the use case diagram or the class diagram? or should I draw some diagrams in parallel? But basically, where should I start? and what UML diagram goes first? Thanks for helping!!

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  • Using gerrit (or similar tool) on a team where multiple devs work on a single feature

    - by Bacon
    We have a team of roughly ~8 devs who regularly work on the same feature over the course of a 3 week sprint. It isn't quite pair programming, but in our current workflow devs regularly push up incomplete code for a colleague to complete. This worked fine before we introduced Gerrit, but now our commits need to represent chunks of test-passing, complete, logical functionality, and so the model breaks. My only idea is to have everybody push up to a separate, untracked branch up until the functionality is ready for review, then squash everything into commits that make sense and push up. Is there another Gerrit-ized workflow that could work? I know this is a widely discussed topic on Google Groups, and that there has recently been some discussion of Gerrit topic reviews, but I wanted to see if there is anybody out there using Gerrit in this way, and what the suggested workflow would be.

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  • Deferring questions about salary expectations until the second interview [closed]

    - by Polynomial
    I usually find that interviewers ask about expected salary on a first interview, but I usually feel uncomfortable discussing such details at an early stage. I feel that low-balling a figure might result in under-selling myself, whereas going too high might lose me the chance of a second interview. I also like time to reflect on my interview experience before vocalising my expectations. I recently realised that in one interview I prefixed my salary figure with a justification, which made me come across as a little desperate and unsure of myself. Is there a good way to defer such questions until a second interview (assuming I get one, of course) without hurting my chances or weakening my position?

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  • Most important research article for software development [closed]

    - by Fabian Fagerholm
    Researchers all over the world collectively publish thousands of articles on software development topics every year, hoping to benefit practical software development in the long run. (Of course, some of them only publish to increase their publication count, but hopefully most still aim to advance the field.) But what is really useful for practical software development? Of all the research articles you have read, what do you consider being the most important one for the software development field? What is it about that article that makes it stand out as especially important in your view? Note: I deliberately chose the term "software development", but you can freely interpret it as "programming" or "software engineering", or anything else that fits into the "software development" category.

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  • Use ctrl+space to invoke clang_complete

    - by tsurko
    I've setup a simple vim environment for C++ development and I use clang_complete for code completion. I'm wondering if there is a way to invoke clang_complete with ctrl+space (as in Eclipse for example)? Currently it is invoked with C-X C-U, which is not very convenient. In the plugin code I saw this: inoremap <expr> <buffer> <C-X><C-U> <SID>LaunchCompletion() So I tried something like this in my vimrc: inoremap <expr> <buffer> <C-Space> <SID>LaunchCompletion() Of course it didn't work:) I read vim's doc about key mapping. but no good. Have you got any suggestions what I'm doing wrong?

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  • When dealing with a static game board, what are some methods to make it more interesting?

    - by Ólafur Waage
    Let's say you have a game board that you look at. It does not move but there is some action going on. For example Chess, Checkers, Solitaire. The game I'm working on is not one of these but it's a good reference. What are some methods you can apply to the game or the design that increases the appeal of the game to the user? Of course you can make it prettier but what are some other methods you can use? For example: Visual cues, game design changes, user interface arrangement, etc.

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  • Ubuntu server 12.04 on AWS - How does the passwordless sudo work for the ubuntu user?

    - by aychedee
    I'm using Ubuntu server 12.04 on Amazon. I want to add a new user that has the same behaviour as the default ubuntu user. Specifically I want passwordless sudo for this new user. So I've added a new user and went to edit /etc/sudoers (using visudo of course). From reading that file it seemed like the default ubuntu user was getting it's passwordless sudo from being a member of the admin group. So I added my new user to that. Which didn't work. Then I tried adding the NOPASSWD directive to sudoers. Which also didn't work. Anyway, now I'm just curious. How does the ubuntu user get passwordless privileges if they aren't defined in /etc/sudoers. What is the mechanism that allows this?

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  • How to code review without offending other developers [duplicate]

    - by Justin984
    This question already has an answer here: How to deal with someone who dislikes the idea of code reviews? 6 answers How can I tactfully suggest improvements to others' badly designed code during review? 14 answers How do I approach a coworker about his or her code quality? 12 answers I work on a team that does frequent code reviews. But it seems like more of a formality than anything. No one really points out problems in the code for fear of offending other developers. The few times I've tried to ask for changes were met with very defensive and reluctant attitudes. This is of course not good. Not only are we spending the time to code review, but we're getting literally zero value from it. Is this an issue that needs to be addressed by individual developers, or are there techniques for suggesting changes without stepping on other people's toes?

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  • Windows 8/Surface Lunch Event Summary

    - by Tim Murphy
    Today was a big day for Microsoft with two separate launch event.  The first for Windows 8 and all of it’s hardware partners.  The second was specifically to introduce the Microsoft Windows 8 Surface tablet.  Below are some of the take-aways I got from the webcasts. Windows 8 Launch The three general area that Microsoft focused on were the release of the OS itself, the public unveiling of the Windows Store and the new devices available from its hardware partners. The release of the OS focused on the fact that it will be available at mid-night tonight for both new PCs and for upgrades.  I can’t say that this interested me that much since it was already known to most people.  I think what they did show well was how easy the OS really is to use. The Windows Store is also not a new feature to those of us who have been running the pre-release versions of Windows 8 or have owned Windows Phone 7 for the past 2 years.  What was interesting is that the Windows Store launches with more apps available than any other platforms store at their respective launch.  I think this says a lot about how Microsoft focuses on the ability of developers to create software and make it available.  The of course were sure to emphasize that the Windows Store has better monetary terms for developers than its competitors. The also showed off the fact that XBox Music streaming is available for to all Windows 8 user for free.  Couple this with the Bing suite of apps that give you news, weather, sports and finance right out of the box and I think most people will find the environment a joy to use. I think the hardware demo, while quick and furious, really show where Windows shine: CHOICE!  They made a statement that over 1000 devices have been certified for Windows 8.  They showed tablets, laptops, desktops, all-in-ones and convertibles.  Since these devices have industry standard connectors they give a much wider variety of accessories and devices that you can use with them. Steve Balmer then came on stage and tried to see how many times he could use the “magical”.  He focused on how the Windows 8 OS is designed to integrate with SkyDrive, Skype and Outlook.com.  He also enforced that they think Windows 8 is the best choice for the Enterprise when it comes to protecting data and integrating across devices including Windows Phone 8. With that we were left to wait for the second event of the day. Surface Launch The second event of the day started with kids with magnets.  Ok, they were adults, but who doesn’t like playing with magnets.  Steven Sinofsky detached and reattached the Surface keyboard repeatedly, clearly enjoying himself.  It turns out that there are 4 magnets in the cover, 2 for alignment and 2 as connectors. They then went to giving us the details on the display.  The 10.6” display is optically bonded to the case and is optimized to reduce glare.  I think this came through very well in the demonstrations. The properties of the case were also a great selling point.  The VaporMg allowed them to drop the device on stage, on purpose, and continue working.  Of course they had to bring out the skate boards made from Surface devices. “It just has to feel right” was the reason they gave for many of their design decisions from the weight and size of the device to the way the kickstand and camera work together.  While this gave you the feeling that the whole process was trial and error you could tell that a lot of science went into the specs.  This included making sure that the magnets were strong enough to hold the cover on and still have a 3 year old remove the cover without effort. I am glad that they also decided the a USB port would be part of the spec since it give so many options.  They made the point that this allows Surface to leverage over 420 million existing devices.  That works for me. The last feature that I really thought was important was the microSD port.  Begin stuck with the onboard memory has been an aggravation of mine with many of the devices in the market today. I think they did job of really getting the audience to understand why you want this platform and this particular device.  Using personal examples like creating a video of a birthday party and being in it or the fact that the device was being used to live blog the event and control the lights and presentation.  They showed very well that it was not only fun but very capable of getting real work done.  Handing out tablets to the crowd didn’t hurt either.  In the end I really wanted a Surface even though I really have no need for one on a daily basis.  Great job Microsoft! del.icio.us Tags: Windows 8,Win8,Windows 8 Luanch

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  • Ubuntu version on external hardrive that shows up in GRUB?

    - by RPi Awesomeness
    I was wondering, is it possible to have Ubuntu installed on an external harddrive and still have it show up in GRUB? Of course, you wouldn't be able boot the other HDD OS unless it was connected, but would this work? I googled 'external HDD OS show in GRUB' and 'have external HDD show up in GRUB' but they didn't bring up anything. Does anyone have any resources to point me to? I can see this as being useful for testing out new releases or having multiple OSs installed without having to go through the BIOS boot choice. Thanks!

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  • How To Start Programming

    - by nayef harb
    I have taken a programming course 2 years ago but I haven't worked in programming since then. I recently found a programmer job, but there is no programming team so for me to gain valuable experience from. I am Programming by myself and making changes on a program already made by my Ex-colleague. I need to know what should I do to be on the right track for becoming a professional programmer without a team to take experience from. What are the good practices to improve and what are the bad ones? I'm using VB.Net, ASP.Net and SQL.

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  • My Oracle Support Accreditation for Database and Enterprise Manager

    - by A. G.
    Have you actively used My Oracle Support for 6-9 months? Take your expertise to the next level—become accredited! By completing the accreditation learning series, you can increase your proficiency with My Oracle Support’s core functions and build skills to help you leverage Oracle solutions, tools, and knowledge that enable productivity. Accreditation learning paths are available for Oracle Database and Enterprise Manager, which focus on product-specific best practices, recommendations, and tool enablement—up leveling your capabilities with these Oracle products. Course topics include:   Oracle Database Staying informed  Install Patching Upgrade Performance Security Scalability Enterprise Manager Staying informed  Supportability Certification Patching Upgrade Performance Diagnostic Tools Troubleshooting Visit the My Oracle Support Accreditation Index and get started with the Level 1 My Oracle Support Accreditation path and product-specific Level 2 learning paths for Oracle Database and Enterprise Manager.

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  • PHPForm mail help [closed]

    - by tom
    I have a PHP Form with two different fieldsets and about 4 labels within each. The form mailer is one i found on a tutorial but I'm not sure how to set in all the variables. Should all the 'label for' names also be the name of the variable? And is it easy to format with font-size etc.. once its been sent to an email for easy reading? $course_title = $_POST['course_title']; $course_date = $_POST['course_date']; $course_code = $_POST['course_code']; $course_fee = $_POST['course_fee']; Say i have - Personal Details labels with - first_name, address, postcode, dob. Course Details labels with - course_title, course_date, course_code Would this be correct and if not would anyone be able to help me out here.

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  • Can manager classes be a sign of bad architecture?

    - by Paul
    Lately I've begun to think that having lots of manager classes in your design is a bad thing. The idea hasn't matured enough for me to make a compelling argument, but here's a few general points: I found it's a lot harder for me to understand systems that rely heavily on "managers". This is because, in addition to the actual program components, you also have to understand how and why the manager is used. Managers, a lot of the time, seem to be used to alleviate a problem with the design, like when the programmer couldn't find a way to make the program Just WorkTM and had to rely on manager classes to make everything operate correctly. Of course, mangers can be good. An obvious example is an EventManager, one of my all time favorite constructs. :P My point is that managers seem to be overused a lot of the time, and for no good reason other than mask a problem with the program architecture. Are manager classes really a sign of bad architecture?

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  • Agile Tools For Handling Multiple Projects

    - by f1dave
    Currently I'm leading our agile team in an iteration manager role as well as doing my regular dev work. One of the difficulties I'm facing as an IM is tracking burn-down/burn-up; not because I can't produce graphs, but because there's multiple projects that this team is working on at one time. At present I have an excel workbook with sheets that contain a whole bunch of graphs, both at an overall team and by-project level. It's clunky and I spend more time tweaking formulas and double checking calculations than I'd really like. As such, I'm interested to know if anyone has used a tool that can effectively produce these sorts of reports, burn-downs, and predictions across multiple projects. I've seen http://www.pivotaltracker.com/ do some nice things, and of course there's JIRA/Greenhopper, but I'm not aware of those being used to track the progress of multiple projects within one team. If anyone's got an idea of some tools, or has faced a similar problem before, I'd love to hear from you.

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  • Jazoon, JAX California, and Brazilian week - it's conference season again

    - by alexismp
    Sparky is on the road again with GlassFish presence around the world in multiple conferences. This past week Jazoon in Zurich had Java EE, GlassFish, JAX-RS, Servlet, JSF all covered while JAX in California also had a good number of Java EE-related talks (see this Java EE 7 article). FISL, the largest Open Source conference in Brazil (7500 participants last year) is coming up this week with OpenJDK, GlassFish, JavaFX, NetBeans, Java EE 7, and of course JDK 7 all covered by subject matter experts. Expect most of these talks and possibly demos to show up here on TheAquarium, on slideshare or on our YouTube channel.

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  • After installing Windows XP I can't boot into Ubuntu 12.04 LTS

    - by Osama
    I know that this issue may have been happened to many people and answered many times. For some reason, I had to install Windows XP beside Ubuntu 12.04 LTS. Once I did that, I'm no longer able to log on to my Ubuntu. The booting list screen doesn't show up. I tried some ways to fix that, one was to try Boot Repair (of course after opening Ubuntu live from a USB), however, the program didn't open after the installation had finished !! So how can I fix that? I hope you guys stick a little with my problem until it is solved

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  • How can you learn to code faster? [closed]

    - by SDGator
    Possible Duplicate: How to Code Faster (Without Sacrificing Quality) I think I code pretty well. I'd say I'm in the top 20% of the folks doing what I do (ASIC verification using System Verilog). But, out of the folks that I admire and aspire to be like, the difference isn't so much quality of code, but the fact that they can pump out reams of good quality code very quickly. Of course, they've been at it far longer than I have. Is it possible to learn to code faster without compromising quality? Or is that something that only comes with time and experience?

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  • Can GJK be used with the same "direction finding method" every time?

    - by the_Seppi
    In my deliberations on GJK (after watching http://mollyrocket.com/849) I came up with the idea that it ins not neccessary to use different methods for getting the new direction in the doSimplex function. E.g. if the point A is closest to the origin, the video author uses the negative position vector AO as the direction in which the next point is searched. If an edge (with A as an endpoint) is closest, he creates a normal vector to this edge, lying in the plane the edge and AO form. If a face is the feature closest to the origin, he uses even another method (which I can't recite from memory right now) However, while thinking about the implementation of GJK in my current came, I noticed that the negative direction vector of the newest simplex point would always make a good direction vector. Of course, the next vertex found by the support function could form a simplex that less likely encases the origin, but I assume it would still work. Since I'm currently experiencing problems with my (yet unfinished) implementation, I wanted to ask whether this method of forming the direction vector is usable or not.

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