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• How hard is it to create a not-so-random number generator?

  - by Duracell

  Backstory: So I was driving to band practice this evening. My car has a USB port where you can plug in a USB stick with MP3 files on it and the stereo will play them. I have about 100 MP3s on my stick so I pushed the 'Random' button. So from here to band practice, it played: Track 22 Track 45 Track 4 Track 11 Track 87 Track 66 Track 98 Then on the way home, it played Track 16 Track 27 Track 33 And then I stopped at the petrol station. I filled up, got back in the car and the stereo fired up again. It played Track 22 Track 45 Track 4 Track 11 Track 87 I thought, WTF? What's with this 'random' generator? What are they using as a seed, if not time? Is a car stereo so memory-tight that it can't even use the C stdlib? Does anyone know how this kind of thing happens?

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• How Transport for London Website Works

  - by Subhen

  Hi, Here let me clarify , I have no intentions to peep in to or any evil intention towards tfls database and other related information. But , ofcourse Millions of users are greatly beniftted the way it serves the information. http://journeyplanner.tfl.gov.uk/ So , If we want to create some site like tfl, journeyplanner , what are the basic things we need to keep in mind. Which Architecture We should use? Can We create this website using ASP.NET(Should be able to)? Is TFL integrating it's website with google maps or any other GPS Edit: While you enter the Zip/Pin code or Station name , it creates a map automatically from source to destination and calcculates the distance also. My Question here is , How do they calculate the distance , do they keep help of Maps or GPS or they created there own webservic?

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• Three Java classes: point out all the issues you can find!

  - by Sicarius

  I wrote three classes for a colleague of mine (I'm new at this job). They compile just fine, but he tells me there are "defects, bugs, and style problems." He wants me to print the files out and mark the problems such as the standard coding conventions, best practices, format, design, and logic. I wrote this code when I was extremely tired and I plan to rewrite it completely. My mistake was showing to it before looking it over myself again. However, he still wants me to do the markings on paper. Any input is greatly appreciated! The three Java classes ['Station.java', 'ParserInt.java', 'ParserException.java'] are uploaded here: http://www.megaupload.com/?d=N2CUVSV2

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• Online audio stream using ruby on rails

  - by Avdept

  I'm trying to write small website that can stream audio online(radio station) and got few questions: 1. Do i have to index all my music files into database, or i can randomily pick file from file system and play it. 2. When should i use ajax to load new song(right after last finished, or few seconds before to get responce from server with link to file?) 3. Is it worth to use ajax, or better make list, that will play its full time and then start over?

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• Adding a Jar to ext and using it in Eclipse

  - by Bob Breznak

  I am providing a client with a lab station image for a school program. There is a library that I'd like to directly add to the JRE so that students can use the library without needing to fiddle with adding the classpath. As this is a basic after school program, the goal is to just get students into programming with as little overhead additions as possible. At this point, I have the lib put into the jre/lib/ext and Eclipse is able to find it, however it will not allow access to any of the classes. I see it in the JRE System Library and the classes and packages are showing up there but when I go to use it, I am getting an "Access restriction" error. When I remove the JRE System Library then add it back in, everything works swimmingly. The library is accessible exactly as intended. Any ideas on how to resolve this?

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• Storing dates i Train schedule MYSQL

  - by App_beginner

  Hi I have created a train schedule database in MYSQL. There are several thousand routes for each day. But with a few exceptions most of the routes are similar for every working day, but differ on weekends. At this time I basically update my SQL tables at midnight each day, to get the departures for the next 24 hours. This is however very inconvenient. So I need a way to store dates in my tables so I don't have to do this every day. I tried to create a separate table where I stored dates for each routenumber (routenumbers are resetted each day), but this made my query so slow that it was impossible to use. Does this mean I would have to store my departure and arrival times as datetimes? In that case the main table containing routes would have several million entries. Or is there another way? My routetable looks like this: StnCode (referenced in seperate Station table) DepTime ArrTime Routenumber legNumber

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• SQL SERVER – Partition Parallelism Support in expressor 3.6

  - by pinaldave

  I am very excited to learn that there is a new version of expressor’s data integration platform coming out in March of this year.  It will be version 3.6, and I look forward to using it and telling everyone about it.  Let me describe a little bit more about what will be so great in expressor 3.6: Greatly enhanced user interface Parallel Processing Bulk Artifact Upgrading The User Interface First let me cover the most obvious enhancements. The expressor Studio user interface (UI) has had some significant work done. Kudos to the expressor Engineering team; the entire UI is a visual masterpiece that is very responsive and intuitive. The improvements are more than just eye candy; they provide significant productivity gains when developing expressor Dataflows. Operator shape icons now include a description that identifies the function of each operator, instead of having to guess at the function by the icon. Operator shapes and highlighting depict the current function and status: Disabled, enabled, complete, incomplete, and error. Each status displays an appropriate message in the message panel with correction suggestions. Floating or docking property panels provide descriptive tool tips for each property as well as auto resize when adjusting the canvas, without having to search Help or the need to scroll around to get access to the property. Progress and status indicators let you know when an operation is working. “No limit” canvas with snap-to-grid allows automatic sizing and accurate positioning when you have numerous operators in the Dataflow. The inline tool bar offers quick access to pan, zoom, fit and overview functions. Selecting multiple artifacts with a right click context allows you to easily manage your workspace more efficiently. Partitioning and Parallel Processing Partitioning allows each operator to process multiple subsets of records in parallel as opposed to processing all records that flow through that operator in a single sequential set. This capability allows the user to configure the expressor Dataflow to run in a way that most efficiently utilizes the resources of the hardware where the Dataflow is running. Partitions can exist in most individual operators. Using partitions increases the speed of an expressor data integration application, therefore improving performance and load times. With the expressor 3.6 Enterprise Edition, expressor simplifies enabling parallel processing by adding intuitive partition settings that are easy to configure. Bulk Artifact Upgrading Bulk Artifact Upgrading sounds a bit intimidating, but it actually is not and it is a welcome addition to expressor Studio. In past releases, users were prompted to confirm that they wanted to upgrade their individual artifacts only when opened. This was a cumbersome and repetitive process. Now with bulk artifact upgrading, a user can easily select what artifact or group of artifacts to upgrade all at once. As you can see, there are many new features and upgrade options that will prove to make expressor Studio quicker and more efficient.  I hope I’m not the only one who is excited about all these new upgrades, and that I you try expressor and share your experience with me. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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• First Impressions of a MacBook (from a PC guy)

  - by dgreen

  Disclaimer: I've been a PC guy my entire working career. I'd probably characterize myself as a power user. Never afraid to bust out the console line. But working with a Mac is totally foreign to me. So for those Mac guys who are curious, this is how your world appears from the outside to a computer literate person :)My Macbook Air has arrived! And it's a thing of beauty:First, the specs: 13" MacBook Air, 2.0GHz Core i7 processor. Upgraded to 8GB of RAM for an additional $100, SSD flash storage  = 256GB. The plan is ultimately to use this baby for some iOS development but also some decent lifting in Windows with Visual Studio. Done a lot of reading  and between VMWare Fusion, Parallels and Bootcamp...I'm going to go with VMWare Fusion for $49.99And now my impressions (please re-read disclaimer before proceeding!):I open the box and am trying to understand exactly how the magsafe connector works (and how to disconnect it).  Why does it have two socket outlet plugs? Who knows.  I feel like Hansel in Zoolander. The files are "in" the computer.Stuck in my external hard drive (usb). So how do I get to the files? To the Googles!Argh...it can't read my external NTFS drive. Fat32 can't support field over 4GB…problematic since some of my existing VMWare image files are much larger than 4GB. Didn't see this coming.Three year old loves iPhoto. Super easy to use. Don't even know what I'm doing but I've already (accidentally) discovered the image filtering options. Fun stuff.First thing I downloaded ever => Chrome. I need something to ground me, something familiar. My token, if you will (sorry, gratuitous Inception joke).Ok, I get it… Finder == windows explorer. But where is my hierarchical structure? I miss the tree :(On that note, yeah…how do I see what "path" my files reside in? I'm afraid to know the answer. You know what scares more though…this notion of a smart folder. Feel like the godfather - just get the job done, I don't care how you handle it, I don't want to know...just get it done. What the hell is AirDrop?Mail…just worked. Still in shock that they have a free client for yahoo mail (please no yahoo jokes).mail -> deleting a message takes 5 seconds. Have they heard of async?"Command" key instead of "Control" ok, then what the $%&^! is the control key for then"aliases" == shortcuts I thinkI don't see the file system. And I'm scared. All these things I'm downloading…these .dmg files (bad name) where are they going? Can't seem to delete when they're doneUgh...realized need to buy a mini-to-vga adaptor if I want to use my external monitor ($13 on ebay, $39 in apple store).Windows docking is trickiest for me…this notion of detached windows with a menu bar at the top. I don't like this paradigm, it's confusing. But maybe because I've been using Windows for too long.Evernote, Dropbox desktop clients seem almost identical…few quirks here and there I need to get used to.iTunes is still a bit gross. In a weird way it's actually worse on a Mac if thats possible. This is not the MacBook's fault…this is a software design issue. Overall: UI will take some getting used to. Can't decide if this represents the future and I'm stuck in the past…or this is the past and I've been spoiled by the future (which would be Windows…don't be hating I happen to be very productive in Win7)  So there you go - my 90 minute first impression of the MacBook universe.

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• Nokia Lumia 920 Windows Phone 8 Announcement

  - by Tim Murphy

  Today Nokia and Microsoft had an event to officially introduce the Lumia 920.  Below is a rundown of some of the things I found interesting. As a person who likes photography there was a lot to drool over.  The main feature that caught my attention was PureView with its optical stabilization.  This alone should improve the majority of you pictures.  Add to that the SmartShoot Object remover that uses multiple images to remove unwanted people or objects that move through your picture and you never have to accept reality again. For the most part the lenses concept introduced in Windows Phone 8 just makes the usability of leveraging camera better.  Of course that is Microsoft’s selling point.  One lens that caught my attention was the Bing lens.  I have to say it is about time that we can take pictures and use them to search for answers using Bing. There were a couple of features shown that involved augmented reality.  One was similar to the yapf application that is already in the market which overlays restaurants and other destination over live camera views.  The other was using the navigation directions with a live view. Then you get down to some of the physical features of the Lumia 920.  The one that got the most stage time is that it has a great 2000mah battery which can be charged wirelessly.  They also pointed out the improved glare reduction of the 4.5 in. curved glass screen.  This hardware improvement is improved further with software that detects glare conditions and adjusts the display attributes to enhance viewing ease. Adding to the wireless cool factor of the Lumia 920 is the general NFC capabilities.  This was demonstrated with NFC docking stations as well as JBL speakers and headphones. There was one more hardware feature that I applauded.  The super sensitive touch screen did away with one of my pet peeves with capacitive touch screens.  You will never have to remove you gloves to operate your phone again.  The mittens that they did the demo with looked more like boxing gloves. I was disappointed with Joe Belfiore said that they were only going to show a couple of new features of the Windows Phone 8 and would hear more at future events.  One of the things he did show is the ability to customize which buttons you preferred as defaults in IE10.  For example you could have the folders button where the refresh button normally is.  He also showed that at long last you can natively take screenshots on your phone.  Hopefully he will be back quickly to give us the rest of the features. The most disappointing part of the event was that we never found out when they would be released or how much they would cost.  Let’s hope this comes soon.  Even with these couple of items still left on my wish list I can’t wait to get my hands on a Lumia 920.  del.icio.us Tags: Windows Phone,Windows Phone 8,Nokia,Lumia,Lumia 920,Microsoft

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• Obtaining MFC Feature Pack GUI elements in .NET WinForms

  - by Cody Gray

  The MFC Feature Pack (and VS 2010) adds out-of-the-box support for several "modern" GUI elements (such as MDI with tabbed documents, the ribbon, and a Visual Studio-style interface with docking panels). These are a boon to those of us that have to support legacy MFC-based applications and want to update their look-and-feel, and a sign that Microsoft has not completely abandoned unmanaged C++ development. However, with the push so strongly in favor of .NET, WinForms, and managed code (and for plenty of good reasons), there seems little reason to develop new applications in unmanaged C++/MFC. The question then becomes how does one obtain these GUI elements in a WinForms application. Almost all of the add-ons and libraries I have found so far cost money, and introduce additional dependencies. I don't have a budget to buy third-party libraries, and the controls provided by Microsoft in MFC for free seem sufficient for our needs. But I still have reservations about learning MFC to develop a new application. Not only does the investment in time seem significant (by all accounts, MFC seems particularly difficult to learn, even for experienced .NET developers--although I am willing to try), but the question of MFC's lifespan is raised as well. Certainly, given the millions of lines of code and existing apps written in native C++, it will be around for some time, but the handwriting seems to be on the wall, so to speak, that it's no longer Microsoft's touted development platform. It seems like these features should be available by now in WinForms without the need for third-party add-ons, or devoting a lot of time and resources to custom-drawing EVERYTHING. Am I just missing something? I find very little online that compares these new features of MFC to what is available in WinForms, mainly because most everything written on MFC pre-dated its most recent update, before which it looked admitted "dated," and with its other flaws, was hardly an appealing platform for new development. With the very recent release of VS 2010, we have a while to wait before WinForms gets updated again. What routes are you guys taking for applications whose customers demand a modern-looking UI on a budget?

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• Calling up DockPanel-Suite's "AutoHidden" DockContent programmatically

  - by Lockszmith

  I am having trouble causing an 'autohide' dock to appear programmatically. Couldn't find any answer around the net, though the following SO Question suggested that .Show() should have done the trick I've tried this on the latest NuGet version of the code. My test code is below. Anyone know how to do it? or what I'm doing wrong? My test Code Create a simple Visual Studio Windows Form application, and replace the main form's source file content with this code: using System; using System.Windows.Forms; using dps = WeifenLuo.WinFormsUI.Docking; namespace testDockPanel { public partial class Form1 : Form { private dps.DockPanel dockPanel; private dps.DockContent dc; private Control innerCtrl; public Form1() { InitializeComponent(); dockPanel = new dps.DockPanel(); dockPanel.Dock = DockStyle.Fill; dockPanel.DocumentStyle = dps.DocumentStyle.DockingWindow; toolStripContainer1.ContentPanel.Controls.Add(dockPanel); dc = new dps.DockContent(); dc.DockPanel = dockPanel; dc.DockState = dps.DockState.DockRightAutoHide; innerCtrl = new WebBrowser() { Dock = DockStyle.Fill }; dc.Controls.Add( innerCtrl ); // This SHOULD show the autohide-dock, but NOTHING happens. dc.Show(); } } }

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• MsChart : Partial view error

  - by Poomjai

  Hi I have a problem when i using Mschart on my MVC project, when i use the first index page of project to render for the partial view name index2 the code is <% Html.RenderPartial("Index2"); %> But when i run it the error is occur which the message is CS0029: Cannot implicitly convert type 'ASP.views_home_index2_ascx' to 'System.Web.UI.Page' -it said that the problem line of code is : // Render chart control Line 52: Chart2.Page = this; << At here Line 53: HtmlTextWriter writer = new HtmlTextWriter(Page.Response.Output); Line 54: Chart2.RenderControl(writer); But when i put all of code in Index2.ascx to the index.aspx and not to render the partial view it work fine Code of Index2.ascx is <% System.Web.UI.DataVisualization.Charting.Chart Chart2 = new System.Web.UI.DataVisualization.Charting.Chart(); Chart2.Width = 412; Chart2.Height = 296; Chart2.RenderType = RenderType.ImageTag; Chart2.Palette = ChartColorPalette.BrightPastel; Title t = new Title("No Code Behind Page", Docking.Top, new System.Drawing.Font("Trebuchet MS", 14, System.Drawing.FontStyle.Bold), System.Drawing.Color.FromArgb(26, 59, 105)); Chart2.Titles.Add(t); Chart2.ChartAreas.Add("Series 1"); Chart2.Series.Add("Series 1"); // add points to series 1 Chart2.Series["Series 1"].Points.AddY(3); Chart2.Series["Series 1"].Points.AddY(4); Chart2.Series["Series 1"].Points.AddY(5); Chart2.BorderSkin.SkinStyle = BorderSkinStyle.Emboss; Chart2.BorderColor = System.Drawing.Color.FromArgb(26, 59, 105); Chart2.BorderlineDashStyle = ChartDashStyle.Solid; Chart2.BorderWidth = 2; Chart2.Legends.Add("Legend1"); // Render chart control Chart2.Page = this; HtmlTextWriter writer = new HtmlTextWriter(Page.Response.Output); Chart2.RenderControl(writer); %

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• Entangled text boxes

  - by user38329

  Hi StackOverflow, A mere Windows textbox greatly surprised me today. I have two unrelated text boxes inside an application. I can type in either text box and switch the focus by clicking on them. Then happens some event X, which I can't describe here for reasons given below. After this event happens, the two text boxes become "entangled" in an almost quantum way. Say, text box A was focused before X happened. When I click text box B to type in some text, the new text appears in text box A, whereas the blinking cursor happily moves along in text box B through the void, as if the text were there. No amount of clicking on either text boxes can resolve this. The cursor will always remain in B, whereas the text will always go to A. Message spying reveals that after the event X, the text boxes lose the ability to lose or gain focus. When I click on B, WM_LOSE_FOCUS does not come to A, and WM_SET_FOCUS does not come to B. (The rectangles and visibility of the boxes are OK.) The same thing happens in Windows XP and Windows 7. Now, event X: it's a big event in a third-party UI library which I cannot reverse-engineer in a timely manner. (Namely, docking a pane in wxAUI.) I am sure that this behavior is the result of incorrect WinAPI calls to the text boxes (garbage in - garbage out). I would like to know what could possibly cause such "textbox trip" to know where to start looking for the bug. Thanks!

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• Grounded in Dublin

  - by Mike Dietrich

  Friday's hands-on workshop in the Oracle office in Dublin was quite good fun for everybody - except for Mick who has just recognized that his Ryanair flight back to Cork has been canceled (So I hope you've returned home well!) and me as my flights back to Munich via London City had been canceled as well. It's always good to have somebody in the workshop from Air Lingus so I've got hourly information what's going in in the Irish airspace (and now I know that the system dealing with such situations is an well prepared Oracle database which runs just like a switch watch - Thanks again for all your support!!! Was great to talk to you!!!). But to be honest, there are worse places to be grounded for a few days than Dublin. At least it gave me the chance to do something which I never had time enough before when visiting Oracle Ireland: a bit of sightseeing. When I've realized that nothing seems to move over the weekend I started organizing my travel back yesterday. It was no fun at all because there's no single system to book such a travel. Figuring out all possibilities and options going back to Munich was the first challange. Irish Ferries webpage was moaning with all the unexpected load (currently it's fully down). Hotel booking websites showed vacancies in Holyhead but didn't let me book. And calling them just reveiled that there are no rooms left. Haven't stayed overnight in a train station for quite a while ;-) The website of VirginTrains puzzled me with offering a seat at an enormous price for a train ride from Holyhead to London Euston (Thanks, Sir Richard Branson!) just to tell me after I booked a ticket that there are no seats left (but I traveled German railsways a few weeks ago from Düsseldorf to Frankfurt sitting on the floor as well). Eurostar's website let me choose tickets through the tunnel to tell me in the final step that the ticket cannot be confirmed as there are no seats left - but the next check again showed bookable seats - must be a database from some other vendor which has no proper row level locking ... hm ...?! Finally the TGV page for the speed train to Stuttgart and then the ICE to Munich was not allowing searches for quite a while - but ultimately ... after 4.5 hours of searching, waiting, sending credit card information again and again ... So if you have a few spare fingers please keep them crossed :-) And good luck to all my colleagues traveling back from the Exadata training in Berlin. As Mike Appleyard, my colleague from the UK presales team wrote: "Dublin and Berlin aren't too bad a place to get stuck... ;-)"

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• Going… Going.. Going.. GONE! The OPNX ScoreBoard

  - by Kristin Rose

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} It was the bottom of the 9th, the bases were loaded and Oracle PartnerNetwork knocked it out of the park! Partners really scored big this year with the first ever Oracle PartnerNetwork Exchange Program at OpenWorld, and it was a win for the ages! With so much to take part in and experience, we wanted to offer you a quick play-by-play of the week in case you couldn’t make every event. Up to bat first was our Global Keynote with Oracle Senior Vice President, Judson Althoff. The Keynote Hall was packed with a full house, and the crowd went wild after the latest Cloud announcements were made. The OPN Exchange General Sessions followed shortly after, and covered topics like Technology, Applications and Engineered Systems – a real game changer for our partners and customers alike! Work hard, play hard has always been our motto, as partners mixed and mingled during Sunday’s AfterDark Reception, all while Macy Gray sung her greatest hits below. But that was only Game Day #1. The rest of the week included: 50+ Partner exclusive sessions, OPN’s Test Fest, the bright and early 5K Partner Fun Run, the Social Media Rally Station at the OPN Lounge, Java Embedded @JavaOne and last but not least, our Ice Cream Social… If only there were some peanuts to go with! Watch below as Judson Althoff recap’s his experience at OPN Exchange this year, and get’s ready for next season! We’re Outta Here! The OPN Communications Team

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• Back home :-)

  - by Mike Dietrich

  Wrote this entry last night in the ICE from Stuttgart to Munich but the conncetion broke: 28.5 hour journey - and close by now. Actually I would have been even closer if our TGV wouldn't have had break problems as soon as we had entered German territory. And you don't want a train which goes up to a speed of 200 mph having issues with its breaks, right? So we missed the connection in Stuttgart but I've catched the last train this night towards Munich. Distance approx 1900 km all together. Usually it takes 2.5 hours with a direct flight with Air Lingus from Munich or a bit more when you'll go through Zurich or Frankfurt. But at least you meet more people and see a bit more from the landscapes passing by :-) Except for the break problem everything worked out well so far (I'm no there finally!). I had 4 hours to change in Paris from Gare de Nord to Gare de l'Est and one thing I really have to point out: the people working for SNCF, the French National Railways, were so organized and helpful, purely amazing. I asked the man at the counter where I had to pick up my prepaid tickets for directions to Gare de l'Est - and after we had a chat about Marlene Dietrich he just grabbed his iPhone, started Google Earth and showed me the way to walk. I pretty sure it's a stupid stereotype that people in Paris or France are so unfriendly to foreigners if they don't speak French. In my past 3 stays or travels to Paris in the past 2 years I had only great experiences. And another thing I really enjoy when being in France: the food!!! The sandwich I had at the train station was packed with yummy goat cheese. And there's always Paul. You might ask yourself: Who the heck is Paul? That's Paul - or actually their website. And at Paul's they serve usually excellent fruit tartes - and this time a nice Gateau Au Chocolate. And very good Cafe Cremé as well :-) That's actually the positive part traveling this way: the food you'll get is much better than the airline food - if your airline still serves something called food ...

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• Programming doesn&rsquo;t have to be Magic

  - by Wes McClure

  In the show LOST, the Swan Station had a button that “had to be pushed” every 100 minutes to avoid disaster.  Several characters in the show took it upon themselves to have faith and religiously push the button, resetting the clock and averting the unknown “disaster”.  There are striking similarities in this story to the code we write every day.  Here are some common ones that I encounter: “I don’t know what it does but the application doesn’t work without it” “I added that code because I saw it in other similar places, I didn’t understand it, but thought it was necessary.” (for consistency, or to make things “work”) “An error message recommended it” “I copied that code” (and didn’t look at what it was doing) “It was suggested in a forum online and it fixed my problem so I left it” In all of these cases we haven’t done our due diligence to understand what the code we are writing is actually doing.  In the rush to get things done it seems like we’re willing to push any button (add any line of code) just to get our desired result and move on.  All of the above explanations are common things we encounter, and are valid ways to work through a problem we have, but when we find a solution to a task we are working on (whether a bug or a feature), we should take a moment to reflect on what we don’t understand.  Remove what isn’t necessary, comprehend and simplify what is.  Why is it detrimental to commit code we don’t understand? Perpetuates unnecessary code If you copy code that isn’t necessary, someone else is more likely to do so, especially peers Perpetuates tech debt Adding unnecessary code leads to extra code that must be understood, maintained and eventually cleaned up in longer lived projects Tech debt begets tech debt as other developers copy or use this code as guidelines in similar situations Increases maintenance How do we know the code is simplified if we don’t understand it? Perpetuates a lack of ownership Makes it seem ok to commit anything so long as it “gets the job done” Perpetuates the notion that programming is magic If we don’t take the time to understand every line of code we add, then we are contributing to the notion that it is simply enough to make the code work, regardless of how. TLDR Don’t commit code that you don’t understand, take the time to understand it, simplify it and then commit it!

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• OPN Exchange @ OpenWorld – Don’t Forget…

  - by Kristin Rose

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Mark your calendar because we’re less than a week away from kicking off our first ever Oracle PartnerNetwork Exchange @ OpenWorld program, and do we have a lot in store for you!  So don’t forget to attend these great partner events! Sunday, 9/30: The Global Partner Keynote with Judson Althoff and other senior executives @ 1:00pm OPN Exchange General Sessions  to discuss the overview of each OPN Exchange track including, Cloud, Engineered Systems, Industries, Technology and Applications @ 3:30pm The exclusive OPN Exchange AfterDark Reception complete with the smooth sounds of Macy Gray @ 7:30pm. Don’t worry, there is plenty to come after Sunday! Be sure to take part in all the exciting activity taking place during the week, including: Over 40 + OPN Exchange Sessions taking place at the Marriott Marquis throughout the week “Test Fest” exams for OPN Specialist Certifications,  taking place throughout the week The 5k Partner Fun Run- Meet at the W Hotel lobby on Monday 10/1 at 6 a.m. PT – No registration necessary! Led by Judson Althoff, SVP of WWA&C. Social Media Rally Station- Join us in the OPN Lounge on Monday to become social savvy and leverage social media tools for your business Ice Cream Social- Monday October 1st, from 3-5:30 p.m. in the OPN Lounge. Hosted by Oracle Advanced Customer Support Services. Endless Networking Opportunities at the OPN Lounge, the Howard Street Tent for lunch, the ‘It’s a Wrap Reception’, and much more! We can’t wait to see you there! The OPN Communications Team

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• SpaceX’s Falcon 9 Launch Success And Reusable Rockets Test Partially Successful

  - by Gopinath

  Elon Musk’s SpaceX is closing on the dream of developing reusable rockets and likely in an year or two space launch rockets will be reusable just like flights, ships and cars. Today SpaceX launched an upgraded Falcon 9 rocket in to space to deliver satellites as well as to test their reusable rocket launching technology. All on board satellites were released on to the orbit and the first stage of rocket partially succeeded in returning back to Earth. This is a huge leap in space technology.   Couple of years ago reusable rockets were considered as impossible. NASA, Russian Space Agency, China, India or for that matter any other space agency never even attempted to build reusable rockets. But SpaceX’s revolutionary technology partially succeeded in doing the impossible! Elon Musk founded SpaceX with the goal of building reusable rockets and transporting humans to & from other planets like Mars. He says If one can figure out how to effectively reuse rockets just like airplanes, the cost of access to space will be reduced by as much as a factor of a hundred.  A fully reusable vehicle has never been done before. That really is the fundamental breakthrough needed to revolutionize access to space. Normally the first stage of a rocket falls back to Earth after burning out and is destroyed. But today SpaceX reignited first stage rocket after its separation and attempted to descend smoothly on to ocean’s surface. Though it did not fully succeed, the test was partially successful and SpaceX was able to recovers portions of first stage. Rocket booster relit twice (supersonic retro & landing), but spun up due to aero torque, so fuel centrifuged & we flamed out — Elon Musk (@elonmusk) September 29, 2013 With the partial success of recovering first stage, SpaceX gathered huge amount of information and experience it can use to improve Falcon 9 and build a fully reusable rocket. In post launch press conference Musk said if things go "super well", could refly a Falcon 9 1st stage by the end of next year. Falcon 9 Launch Video Next reusable first tests delayed by at least two launches SpaceX has a busy schedule for next several months with more than 50 missions scheduled using the new Falcon 9 rocket. Ten of those missions are to fly cargo to the International Space Shuttle for NASA.  SpaceX announced that they will not attempt to recover the first stage of Falcon 9 in next two missions. The next test will be conducted on  the fourth mission of Falcon 9 which is planned to carry cargo to Internation Space Station sometime next year. This will give time required for SpaceX to analyze the information gathered from today’s mission and improve first stage reentry systems. More reading Here are few interesting sources to read more about today’s SpaceX launch SpaceX post mission press conference details and discussion on Reddit Giant Leaps for Space Firms Orbital, SpaceX Hacker News community discussion on SpaceX launch SpaceX Launches Next-Generation Private Falcon 9 Rocket on Big Test Flight

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• The Loneliest Road in America and the OTN Garage

  - by rickramsey

  Source I never told anyone how the image of the OTN Garage on Facebook came to be. I took the Facebook picture on Route 50 in Nevada, USA, in October of 2010. I was riding from Colorado to Oracle OpenWorld in San Francisco, so it was probably October. Route 50 is known as "The Loneliest Road in America." There are roads across Nevada that have even LESS traffic, but Route 50 still one. desolate. road. Although I have seen stranger things while riding along Nevada's Extraterrestrial Highway, I still run across notable oddities every time I ride Route 50. Like the old man with a bandolero of water bottles jogging along the side of the highway in the middle of the day, 50 miles from the closest town. First ultra-marathoner I'd seen in action. He waved at me. Or the dozen Corvettes with California license plates driving toward me, all doing the speed limit in the middle of nowhere because they were being tailed by half a dozen Nevada state troopers. #fail. I don't remember which town I was in, but I noticed the building when I stopped at the gas station. While standing there pouring fuel into the Harley, the store caught my eye. So I pulled the bike in front and walked inside. The owner is a little old lady, about 100 years old. Most of the goods she had on the shelves looked like they had been placed there during WWII. She was itty bitty and could barely see over the counter, but she was so happy when I bought a bar of Hershey's chocolate that she gave me a five cent discount. I took a few pictures and, when I got back, Kemer Thomson, who sometimes blogs here, photoshopped the OTN Garage and Oil Change signs onto it. The bike is a 2009 Road King Classic with a Bob Dron fairing and a Corbin heated seat. The seat came in handy when I rode home over Tioga Pass. The Road King is a very comfy touring bike with a great Harley rumble. I'm kinda sorry I sold it. When I stopped for fuel about 75 miles down the road at the next town, I peeled back the chocolate bar. I had turned into powder. Probably 50 years ago. - Rick Website Newsletter Facebook Twitter

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• What Would a CyberWar Do To Your Business?

  - by Brian Dayton

  In mid-February the Bipartisan Policy Center in the United States hosted Cyber ShockWave, a simulation of how the country might respond to a catastrophic cyber event. An attack takes place, they can't isolate where it came from or who did it, simulated press reports and market impacts...and the participants in the exercise have to brief the President and advise him/her on what to do. Last week, Former Department of Homeland Security Secretary Michael Chertoff who participated in the exercise summarized his findings in Federal Computer Weekly. The article, given FCW's readership and the topic is obviously focused on the public sector and US Federal policies. However, it touches on some broader issues that impact the private sector as well--which are applicable to any government and country/region-- such as: ·         How would the US (or any) government collaborate to identify and defeat such an attack? Chertoff calls this out as a current gap. How do the public and private sector collaborate today? How would the massive and disparate collection of agencies and companies act together in a crunch? ·         What would the impact on industries and global economies be? Chertoff, and a companion article in Government Computer News, only touch briefly on the subject--focusing on the impact on capital markets. "There's no question this has a disastrous impact on the economy," said Stephen Friedman, former director of the National Economic Council under President George W. Bush who played the role of treasury secretary. "You have financial markets shut down at this point, ordinary transactions are dramatically depleted, there's no question that this has a major impact on consumer confidence." That Got Me Thinking ·         How would it impact Oracle's customers? I know they have business continuity plans--is this one of their scenarios? What if it's not? How would it impact manufacturing lines, ATM networks, customer call centers... ·         How would it impact me and the companies I rely on? The supermarket down the street, my Internet Service Provider, the service station where I bought gas last night.   I sure don't have any answers, and neither do Chertoff or the participants in the exercise. "I have to tell you that ... we are operating in a bit of unchartered territory." said Jamie Gorelick, a former deputy attorney general who played the role of attorney general in the exercise.    But it is a good thing that governments and businesses are considering this scenario and doing what they can to prevent it from happening.

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• ArchBeat Link-o-Rama Top 10 for November 1, 2012

  - by Bob Rhubart

  Hurricane Sandy Edition Power outages in the Cleveland area made it impossible to publish posts on Tuesday and Wednesday. In my neighborhood most are still without power. The sound of howling winds that dominated on Monday and Tuesday has been replaced by the sound of of portable generators. My internet connection was restored only after AT&T U-Verse crewmen hooked up a portable generator to power the relay station up the street. Bear in mind that Cleveland is 500 miles from the Atlantic coast. Mobile Development Platform Strategy Chart: ADF Mobile, WebCenter Sites, Portal, Content and Social "Unlike desktop web focused efforts, the world of mobile has undergone change at a feverish pace," says social enterprise expert John Brunswick. His extensive post charts various resources that will help you keep up. ADF Essentials - The Bare Necessities | Floyd Teter The experiment is over... And now Oracle ACE Director Floyd Teter shares his impressions after spending some time with Oracle ADF Essentials, the free version of Oracle ADF. Expanding the Oracle Enterprise Repository with functional documentation Capgemini middleware specialist Marc Kuijpers shares information on how Oracle Enterprise Repository can be configured "to contain functional assets, i.e. functional designs, use cases and a logical data model" to aid in SOA governance efforts. A review of Oracle SOA Suite 11g Administrator’s Handbook | RedStack "More so than any other single piece of content that I have seen on the topic, it provides the information that a SOA administrator needs to know in order to successfully configure, manage, monitor, troubleshoot and backup an Oracle SOA environment." So says Oracle Fusion Middleware A-Team solution architect Mark Nelson of Oracle SOA Suite 11g Administrator’s Handbook, by Ahmed Aboulnaga and Arun Pareek. Eating our own dog food – Oracle’s internal deployment of Oracle IDM Oracle Fusion Middleware A-Team member Brian Eidelman recommends the recent podcast on Oracle’s internal deployment of Oracle OAM and OID. "This was a big project that involved migrating a bunch of critical, high volume applications to leverage OAM and OID," says Eidelman. "So I suggest you tune in to see and hear more about how we deploy our own software." Thought for the Day "Anyone who says they're not afraid at the time of a hurricane is either a fool or a liar, or a little bit of both." — Anderson Cooper Source: BrainyQuote

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• What Would a CyberWar Do To Your Business?

  - by [email protected]

  In mid-February the Bipartisan Policy Center in the United States hosted Cyber ShockWave, a simulation of how the country might respond to a catastrophic cyber event. An attack takes place, they can't isolate where it came from or who did it, simulated press reports and market impacts...and the participants in the exercise have to brief the President and advise him/her on what to do. Last week, Former Department of Homeland Security Secretary Michael Chertoff who participated in the exercise summarized his findings in Federal Computer Weekly. The article, given FCW's readership and the topic is obviously focused on the public sector and US Federal policies. However, it touches on some broader issues that impact the private sector as well--which are applicable to any government and country/region-- such as: · How would the US (or any) government collaborate to identify and defeat such an attack? Chertoff calls this out as a current gap. How do the public and private sector collaborate today? How would the massive and disparate collection of agencies and companies act together in a crunch? · What would the impact on industries and global economies be? Chertoff, and a companion article in Government Computer News, only touch briefly on the subject--focusing on the impact on capital markets. "There's no question this has a disastrous impact on the economy," said Stephen Friedman, former director of the National Economic Council under President George W. Bush who played the role of treasury secretary. "You have financial markets shut down at this point, ordinary transactions are dramatically depleted, there's no question that this has a major impact on consumer confidence." That Got Me Thinking · How would it impact Oracle's customers? I know they have business continuity plans--is this one of their scenarios? What if it's not? How would it impact manufacturing lines, ATM networks, customer call centers... · How would it impact me and the companies I rely on? The supermarket down the street, my Internet Service Provider, the service station where I bought gas last night. I sure don't have any answers, and neither do Chertoff or the participants in the exercise. "I have to tell you that ... we are operating in a bit of unchartered territory." said Jamie Gorelick, a former deputy attorney general who played the role of attorney general in the exercise. But it is a good thing that governments and businesses are considering this scenario and doing what they can to prevent it from happening.

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• Network Your Computers & Devices: Step by Step

  - by The Geek

  If you’re looking for a great book to help you learn more about Windows home networking, there’s a new book on the market by our good friend Ciprian, and published by none other than Microsoft Press. Note: our friend Ciprian has been a guest contributor here on How-To Geek in the past, and he’s not only a geek that knows what he’s talking about, he’s also one of the more honest and decent people I’ve worked with. In his spare time, he runs the 7 Tutorials web site. The Book One of the great things about this book is that you aren’t limited to just Windows networking—it also explains how to connect Windows 7, XP, Vista, Mac OS X, and even Linux on the same network and share folders and devices between them. Everything in the book is written in a typical How-To Geek step-by-step format, with plenty of screenshots and pictures to help you through the process. Book Outline If you’re going to be spending some money on the book, you probably want to know what it’s all about, and since the Amazon page doesn’t give, well, much information at all, here’s the entire outline for you: Setting Up a Router and Devices Setting User Account on All Computers Setting Up Your Libraries on All Windows 7 Computers Creating the Network Customizing Network Sharing Settings in Windows 7 Creating the Homegroup and Joining Windows 7 Computers Sharing Libraries and Folders Sharing and Working with Devices Streaming Media Over the Network and the Internet Sharing Between Windows XP, Windows Vista, and Windows 7 Computers Sharing Between Mac OS X and Windows 7 Computers Sharing Between Ubuntu Linux and Windows 7 Computers Keeping the Network Secure Setting Up Parental Controls Troubleshooting Network and Internet Problems It’s a great book, with loads of information, and compared to most tech books isn’t very expensive—only $19.79 for the paperback and $9.99 for the Kindle version. Well worth it, and hey, it’s an official Microsoft Press book—written by a How-To Geek guest author. Network Your Computers & Devices Step by Step [Amazon] Latest Features How-To Geek ETC How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 The 50 Best How-To Geek Windows Articles of 2010 The 20 Best How-To Geek Explainer Topics for 2010 How to Disable Caps Lock Key in Windows 7 or Vista How to Use the Avira Rescue CD to Clean Your Infected PC 2011 International Space Station Calendar Available for Download (Free) Ultimate Elimination – Lego Black Ops [Video] BotSync Enables Secure FTP File Synchronization on Android Devices Enjoy Beautiful City Views with the Cityscape Theme for Windows 7 Luigi Installs Any OS on Google’s Cr-48 Notebook DIY iPad Stylus Offers Pen-Based Interaction on the Cheap

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• Default values - are they good or evil?

  - by Andrew

  The question about default values in general - default return function values, default parameter values, default logic for when something is missing, default logic for handling exceptions, default logic for handling the edge conditions etc. For a long time I considered default values to be a "pure evil" thing, something that "cloaks the catastrophe" and results in a very hard do find bugs. But recently I started to think about default values as some sort of a technical debt ... which is not a straight bad thing but something that could provide some "short term financing" get us to survive the project (how many of us could afford to buy a house without taking out the mortgage?). When I say a "short term" - I don't mean - "do something quickly first and do refactor it out later before it hits the production". No - I am talking about relying on a hardcoded default values in a production software. Granted - it could cause some issues, but what if it only going to cause a single trouble in a whole year. Again - I am talking about the "average" mainstream software here (not a software for a nuclear power station) - the average web site or a UI application for the accounting software, meaning that people lives are not at stake, nor millions of dollars. Again, from my experience, business users would rather live with the software which "works somehow", rather then wait for a perfect one. And the use of default values helps a lot if you develop a software in a RAD style. But again - the longest debug sessions I have spent were because of the bugs introduced by a default value which either stopped being "a default" along the way or because a small subsystem has recently been upgraded and as a result of this upgrade it does not handle the default correctly (e.g. empty list vs null, or null string vs empty string). So my question is - are the default values good or evil. And if they are a technical debt - how do measure up how much you can borrow so you can afford the repayments? Would really appreciate any input. Cheers. EDIT: If I am using the default values as a way to cut the corners during the development - and if the corners cutting results in a bugs and issues - what is the methodology to recover from these issues?

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