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• Programming by dictation?

  - by Andrew M

  ie. you speak out the code, and someone else across the room types it in Anyone tried this? Obviously the person taking the dictation would need to be a coder too, so you didn't have to explain everything and go into tedious detail (not 'open bracket, new line...' but more like 'create a new class called myParser that takes three arguments, first one is...'). I thought of it because sometimes I'm too easily distracted at my computer. Surrounded by buttons, instant gratification a click away, the world at my fingertips. To get stuff done, I want to get away, write my code on paper. But that would mean losing access to necessary resources, and necessitate tedious typing-up later on. The solution? Dictate. Pros: no chance to check reddit, stackexchange, gmail, etc. code while you pace the room, lie down, play billiards, whatever train your brain to think more abstractedly (have to visualize things if you can't just see the screen) skip the tedious details (closing brackets etc.) the typist gets to shadow a more experienced programmer and learn how they work the typist can provide assistance/suggestions external pressure of typist expecting instructions, urging you to stay focussed Cons might be too hard might not work any better rather inefficient use of assisting programmer need to find/pay someone to do this

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• Release 17 is here!

  - by Cheryl

  Our training development team has been busy updating courses to keep pace with the new release of CRM On Demand. Release 17 is here! And I heard recently that it's one of our biggest releases ever. A lot of new features and functionality for you to take advantage of - too much for me to cover in this blog post. But, I thought I'd tell you about a few of my favorites - be sure to take a look at the What's New in Release 17 recording to see the full list, though...because I'm only going to touch on a few. Create your own look - okay, I'm starting with the fun stuff. But, there is a new customizable themes feature so that you can change the look of the application; colors, logo, the shape of the tabs. And it's really easy. There's also a whole new library of ready-made themes for you to pick from if you just want to go with one of those. Use this new feature to match the look of your company logo and color scheme. Or blaze new trails. You can create the look for the whole company, or a different look for each CRM On Demand role. This might especially come in handy if you're using the Partner Relationship Management (PRM) capabilities of CRM On Demand - you can create themes for your partner-facing roles to provide branded partner portals. Speaking of PRM - there are enhancements in this release to help companies better manage their partner relationships. A new Deal Registration object, which is separate from the Opportunity record, and better Special Pricing Request and Marketing Development Fund Request processes, give a lot more flexibility in how companies can build and manage their relationships with partners. Some new options for Forecasts in in Release 17, too. You can now have more than one type of forecast generated each forecast period. For example, you might need to see a forecast of the total opportunity revenue for your sales team, as well as on that breaks down revenue by product. The forecast definition now lets you do that. Other options allow you to make submitting forecasts easier, split opportunity revenue across the team and forecast that split appropriately. And - look for the new Forecast subject area in Answers, for building custom forecast reports. Ever wish you could use Workflow Rules to automatically reassign leads if they haven't been followed up on...or to email a manager if the status of a service request isn't changed after a specified period of time? Then check out the new Wait action for workflows. I think you'll be happy. Ok, enough for today. There is a lot to Release 17 that I didn't mention - a lot has been added for our Life Science industry edition, some new data visibility options, a new Data Loader tool, and more. Stay tuned for more blog posts about these and other Release 17 features in the coming weeks. In the meantime, don't forget about all of the resources we have for you to learn more (see my Learning About Release 17 blog post for details).

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• When are Getters and Setters Justified

  - by Winston Ewert

  Getters and setters are often criticized as being not proper OO. On the other hand most OO code I've seen has extensive getters and setters. When are getters and setters justified? Do you try to avoid using them? Are they overused in general? If your favorite language has properties (mine does) then such things are also considered getters and setters for this question. They are same thing from an OO methodology perspective. They just have nicer syntax. Sources for Getter/Setter Criticism (some taken from comments to give them better visibility): http://www.javaworld.com/javaworld/jw-09-2003/jw-0905-toolbox.html http://typicalprogrammer.com/?p=23 http://c2.com/cgi/wiki?AccessorsAreEvil http://www.darronschall.com/weblog/2005/03/no-brain-getter-and-setters.cfm http://www.adam-bien.com/roller/abien/entry/encapsulation_violation_with_getters_and To state the criticism simply: Getters and Setters allow you to manipulate the internal state of objects from outside of the object. This violates encapsulation. Only the object itself should care about its internal state. And an example Procedural version of code. struct Fridge { int cheese; } void go_shopping(Fridge fridge) { fridge.cheese += 5; } Mutator version of code: class Fridge { int cheese; void set_cheese(int _cheese) { cheese = _cheese; } int get_cheese() { return cheese; } } void go_shopping(Fridge fridge) { fridge.set_cheese(fridge.get_cheese() + 5); } The getters and setters made the code much more complicated without affording proper encapsulation. Because the internal state is accessible to other objects we don't gain a whole lot by adding these getters and setters. The question has been previously discussed on Stack Overflow: http://stackoverflow.com/questions/565095/java-are-getters-and-setters-evil http://stackoverflow.com/questions/996179

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• Laptop battery: is voltage really important to respect?

  - by Fox

  I got an Acer Aspire 5100 and I just bought a new battery (after the stock battery just died yesterday). But I saw something after buying and I'm wondering whether it's really important or not. My stock battery was a 6-cell 4000mah 11.1v and the new battery is an 8-cell 4800mah 14.8v . I know that 8-cell and 4800mah is okay, but what about the 14.8v instead of 11.1v? The battery description says it's compatible with my laptop model (AS5100, model BL51), but the voltage difference makes me wonder. Will the laptop only take what it needs? Or will it be getting 14.8v straight in the brain? I know that my wall plug claims to output 19v, so logically I'm thinking a higher voltage battery shouldn't be a problem. Am I correct in thinking this? Thanks in advance for your answers!

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• Ubuntu and bumblebee and intel problem

  - by LnxSlck

  I have a brain teaser that i can't solve. When 12.04 (64bits) came out, i did a fresh install and then installed bumblebee with: sudo add-apt-repository ppa:bumblebee/stable sudo apt-get install bumblebee bumblebee-nvidia And Ubuntu recognized (System Settings - Details) Intel Card for primary card, and i could launch applications with optirun. I have: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 520MX] (rev ff) Now, a few days back, i did the exact same thing, installed from the same DVD everything the same, installed bumblebee the same way. Nvidia with Optirun works fine, but Ubuntu doesn't have 3D effects: root@deathstar:~# optirun /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GT 520MX/PCIe/SSE2 OpenGL version string: 4.2.0 NVIDIA 295.40 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: no GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no I never did anything to install Intel drivers (except installing mesa-utils), before bumblebee got everything working, but now i can't get Ubuntu to get Unity with 3D. Can someone help me please get Unity 3d working? Your help will be much appreciated

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• So are we ever getting the technological singularity

  - by jsoldi

  I´m still waiting for an AI robot that will pass the Turing test. I keep going back to http://www.a-i.com/ and nothing. I don´t know much about AI but, did anyone ever tried to make a genetic algorithm whose evolution algorithm itself evolves? Or how about one whose algorithm that makes the genetic algorithm evolve, evolves? Or one whose genetic algorithm that makes the genetic algorithm that makes the genetic algorithm evolve, evolves? Or how about an algorithm that abstracts all this into a potentially infinitely deep tree of genetic evolution algorithms? Aren´t we just failing as programmers? And I don´t think we can blame the processors speed. If you make and application that simulates consciousness you will get a Nobel prize no matter how many hours it takes to respond to your questions. But nobody did it. It almost reminds me to Randi´s $1000000 paranormal challenge. As I keep going back to AI chat bots, they keep getting better at changing the subject on a way that seems natural. But if I tell them something like "if 'x' is 2 then whats two times 'x'?" then they don't have a clue what I'm talking about. And I don't think they need a whole human brain simulation to be able to answer to something like that. They don't need feelings or perception. This is just language and logics. I don't think my perception of the color red gives me the ability to understand that if 'x' is 2 then two times 'x' is 4. I'm sure we are just missing some elemental principle we cannot grasp because it's probably stuck behind our eyes. What do you think?

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• Is browser fingerprinting a viable technique for identifying anonymous users?

  - by SMrF

  Is browser fingerprinting a sufficient method for uniquely identifying anonymous users? What if you incorporate biometric data like mouse gestures or typing patterns? The other day I ran into the Panopticlick experiment EFF is running on browser fingerprints. Of course I immediately thought of the privacy repercussions and how it could be used for evil. But on the other hand, this could be used for great good and, at the very least, it's a tempting problem to work on. While researching the topic I found a few companies using browser fingerprinting to attack fraud. And after sending out a few emails I can confirm at least one major dating site is using browser fingerprinting as but one mechanism to detect fake accounts. (Note: They have found it's not unique enough to act as an identity when scaling up to millions of users. But, my programmer brain doesn't want to believe them). Here is one company using browser fingerprints for fraud detection and prevention: http://www.bluecava.com/ Here is a pretty comprehensive list of stuff you can use as unique identifiers in a browser: http://browserspy.dk/

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• #altnetseattle &ndash; Collaboration, Why is it so hard!

  - by GeekAgilistMercenary

  The session convened and we began a discussion about why collaboration is so hard. To work together in software better us engineers have to overcome traditional software approaches (silos of work) and the human element of tending to go off in a corner to work through an issue. It was agreed upon that software engineers are jack asses of jack assery. Breaking down the stoic & silent types by presenting a continuous enthusiasm until the stoic and silent types break down and open up to the group.  Knowing it is ok to ask the dumb question or work through basic things once in a while. Non-work interactions are pivotal to work related collaboration. Collaboration is mostly autonomous of process (i.e. Agile or Waterfall) Latency time should be minimal in the feedback loop for software development. Collaboration is enhanced by Agile Ideals, and things like Scrum or Lean Process. Agile is not a process, Lean and Scrum are process.  Agile is an ideal. Lean, Agile, Scrum, Waterfall, Six Sigma, CMMI, oh dear. . . Great session.  Off to the next session and more brain crunching. . . weeeeeeee!

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• New Rapid Install StartCD 12.2.0.48 for EBS 12.2 Now Available

  - by Max Arderius

  A new Rapid Install startCD (Patch 18086193) for Oracle E-Business Suite Release 12.2 is now available. We recommend that all EBS customers installing or upgrading to EBS 12.2 use this latest update. The startCD updates are distributed to customers via My Oracle Support Patch which can be uncompressed on top of any previous 12.2 startCD under the main staging area. This patch replaces any previous startCDs. What's New in This Update? This new startCD version 12.2.0.48 includes important fixes for multi-node Installs, RAC, pre-install checks, platform specific issues, and upgrade scenario failures: 18703814 - QREP:122:RI:ISSUE WITH CHECKOS.CMD 18689527 - QREP:122:RI:ISSUE WITH FNDCORE.DLL SHIPPED AS PART OF R122 PACKAGE 18548485 - QREP1224:4:JAR SIGNER ISSUE DUE TO THE RI UPGRADE AUTOCONFIG CHANGES 18535812 - QREP:1220.48_4: 12.2.0 UPGRADE FILE SYSTEM LAY OUT IS AFFECTING THE DB TABLES 18507545 - WIN: UNABLE TO LAY DOWN FS PRIOR TO 12.2 UPGRADE WITHOUT AFFECTING RUNNING DB 18476041 - UNABLE TO LAY DOWN FS PRIOR TO 12.2 UPGRADE WITHOUT AFFECTING PRODUCTION DB 18459887 - R12.2 INSTALLATION FAILURE - OPMNCTL: NOT FOUND 18436053 - START CD 48_4 - ISSUES WITH TEMP SPACE CHECK 18424747 - QREP1224.3:ADD SERVER BROWSE BUTTON NOT WORKING 18421132 - *RW-50010: ERROR: - SCRIPT HAS RETURNED AN ERROR: 1 18403700 - QREP122.48:RI:UPGRADE RI PRECHECK HUNG IN SPLIT TIER APPS NODE ( NO SILENT ) 18383075 - ADD VERBOSE OPTION TO RAC VALIDATION 18363584 - UPTAKE INSTALL SCRIPTS FOR XB48_4 18336093 - QREP:122:RI:PATCH FS ADMIN SERVICE RUNNING AFTER RI UPGRADE CONFIGURE MODE 18320278 - QREP:1224.3:PLATFORM SPECIFIC SYNTAX ERRORS WITH DATE COMMAND IN DB CHECKER 18314643 - DISABLE SID=DB_NAME FOR RI UPGRADE FLOW IN RAC 18298977 - RI: EXCEPTION WHILE CLICKING RAC NODES BUTTON ON A NON-RAC SERVER 18286816 - QREP122:STARTCD48_3:TRAVERSING FROM VISION PASSW SCREEN TO PROD 18286371 - QREP122:STARTCD48_3:AMBIGUOUS MESSAGE DURING STAGE AREA CHECK ON HP 18275403 - QREP122:48:RI UPGRADE WITH EOH POST CHECKS HANGS IN SPLIT TIER DB NODE 18270631 - QREP122.48:MULTI-NODE RI USING NON-DEFAULT PASSWORDS NOT WORKING 18266046 - QREP122:48:RI NOT ALLOWING TO IGNORE THE RAC PRE-CHECK FAILURE 18242201 - UPTAKE TXK INSTALL SCRIPTS AND PLATFORMS.ZIP INTO STARTCD XB48_3 18236428 - QREP122.47:RI UPGRADE EXISTING OH FOR NON-DEFAULT APPS PASSWORD NOT WORKING 18220640 - INCONSISTENT DATABASE PORTS DURING EBS 12.2 INSTALLATION FOR STARTCD 12.2.0.47 18138796 - QREP122:47:RI 10.1.2 TECHSTACK NOT WORKING IF WE RUN RI FROM NEW STARTCD LOC 18138396 - TST1220: CONTROL FILE NAMING IN RAPID INSTALL SEEMS TO HAVE ISSUES 18124144 - IMPROVE HANDLING ERRORS FOUND IN CLUVFY LOG DURING PREINSTALL CHECKS 18111361 - VALIDATE ASM DB DATA FILES PATH AS +<DATA GROUP>/<PATH> 18102504 - QREP1220.47_5: UNZIP PANEL DOES NOT CREATE THE CORRECT STAGE 18083342 - 12.2 UPGRADE JAVA.NET.BINDEXCEPTION: CANNOT ASSIGN REQUESTED ADDRESS 18082140 - QREP122:47:RAC DB VALIDATION IS FAILS WITH EXIT STATUS IS 6 18062350 - 12.2.3 UPG: 12.2.0 INSTALLATION LOGS 18050840 - RI: UPGRADE WITH EXISTING RAC OH:SECONDARY DB NODE NAME IS BLANK 18049813 - RAC LOV DEFAULTS NOT SAVED UNLESS "SELECT" IS CLICKED 18003592 - TST1220:ADDITIONAL FREE SPACE CHECK FOR RI NEEDS TO BE CHECKED 17981471 - REMOVE ASM SPACE CHECK FROM RACVALIDATIONS.SH 17942179 - R12.2 INSTALL FAILING AT ADRUN11G.SH WITH ERRORS RW-50004 & RW-50010 17893583 - QREP1220.47:VALIDATION OF O.S IN RAPIDWIZ IN THE DB NODE CONFIGURATION SCREEN 17886258 - CLEANUP FND_NODES DURING UPGRADE FLOW 17858010 - RI POST INSTALL CHECKS (SSH VERIFICATION) STEP IS FAILING 17799807 - GEOHR: 12.2.0 - ERRORS IN RAPIDWIZ AND ADCONFIG LOGS 17786162 - QREP1223.4:RI:SERVICE_NAMES IS PRINTED AS SERVICE_NAME IN RI SCREEN 17782455 - RI: CONFIRM DEFAULT APPS PASSWORD IN SILENT MODE KICKOFF 17778130 - RI:ADMIN SERVER TO BE UP ON PRIMARY MID-TIER IN MULTI-NODE UPGRADE FS CREATION 17773989 - UN-SUPPORTED PLATFORM SHOWS 32 BIT AS HARD-CODED 17772655 - RELEVANT MESSAGE DURING THE RAPDIWIZ -TECHSTACK 17759279 - VERIFICATION PANEL DOES NOT EXPAND TECHNOLOGY STACK 17759183 - BUILDSTAGE SCRIPT MENU NEEDS TO BE ADJUSTED 17737186 - DATABASE PRE-REQ CHECK INCORRECTLY REPORTS SUCCESS ON AIX 17708082 - 12.2 INSTALLATION - OS PRE-REQUISITES CHECK 17701676 - TST122: GENERATE WRONG S_DBSID FOR PATCH FILE SYSTEM AT PHASE PREPARE 17630972 - /TMP PRE-REQ INSTALLATION CHECK 17617245 - 12.2 VISION INSTALL FAILS ON AIX 17603342 - OMCS: DB STAGING COMPLAINS WHILE MOVING IT TO FINAL LOCATION 17591171 - OMCS: DB STAGING FAILS WITH FRESH INSTALL R12.2 17588765 - CHECKER VERSION AND PLUGIN VERSION 17561747 - BUILDSTAGE.SH FAILS WITH ERROR WHEN STAGE HOSTED ON 32BIT LINUX 17539198 - RAPID INSTALL NEEDS TO IGNORE NON-REQUIRED STAGE ELEMENTS 17272808 - APPS USERS THAT HAVE DEFAULT PASSWORD AFTER 12.2 RAPID INSTALL References 12.2 Documentation Library 1581299.1 : EBS 12.2 Product Information Center 1320300.1 : Oracle E-Business Suite Release Notes, Release 12.2 1606170.1 : Oracle E-Business Suite Technology Stack and Applications DBA Release Notes for Release 12.2.3 1624423.1 : Oracle E-Business Suite Technology Stack and Applications DBA Release Notes for R12.TXK.C.Delta.4 and R12.AD.C.Delta.4 1594274.1 : Oracle E-Business Suite Release 12.2: Consolidated List of Patches and Technology Bug Fixes Related Articles Oracle E-Business Suite 12.2 Now Available startCD options to install Oracle E-Business Suite Release 12.2

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• Thoughts on C# Extension Methods

  - by Damon

  I'm not a huge fan of extension methods.  When they first came out, I remember seeing a method on an object that was fairly useful, but when I went to use it another piece of code that method wasn't available.  Turns out it was an extension method and I hadn't included the appropriate assembly and imports statement in my code to use it.  I remember being a bit confused at first about how the heck that could happen (hey, extension methods were new, cut me some slack) and it took a bit of time to track down exactly what it was that I needed to include to get that method back.  I just imagined a new developer trying to figure out why a method was missing and fruitlessly searching on MSDN for a method that didn't exist and it just didn't sit well with me. I am of the opinion that if you have an object, then you shouldn't have to include additional assemblies to get additional instance level methods out of that object.  That opinion applies to namespaces as well - I do not like it when the contents of a namespace are split out into multiple assemblies.  I prefer to have static utility classes instead of extension methods to keep things nicely packaged into a cohesive unit.  It also makes it abundantly clear where utility methods are used in code.  I will concede, however, that it can make code a bit more verbose and lengthy.  There is always a trade-off. Some people harp on extension methods because it breaks the tenants of object oriented development and allows you to add methods to sealed classes.  Whatever.  Extension methods are just utility methods that you can tack onto an object after the fact.  Extension methods do not give you any more access to an object than the developer of that object allows, so I say that those who cry OO foul on extension methods really don't have much of an argument on which to stand.  In fact, I have to concede that my dislike of them is really more about style than anything of great substance. One interesting thing that I found regarding extension methods is that you can call them on null objects. Take a look at this extension method: namespace ExtensionMethods {   public static class StringUtility   {     public static int WordCount(this string str)     {       if(str == null) return 0;       return str.Split(new char[] { ' ', '.', '?' },         StringSplitOptions.RemoveEmptyEntries).Length;     }   }   } Notice that the extension method checks to see if the incoming string parameter is null.  I was worried that the runtime would perform a check on the object instance to make sure it was not null before calling an extension method, but that is apparently not the case.  So, if you call the following code it runs just fine. string s = null; int words = s.WordCount(); I am a big fan of things working, but this seems to go against everything I've come to know about instance level methods.  However, an extension method is really a static method masquerading as an instance-level method, so I suppose it would be far more frustrating if it failed since there is really no reason it shouldn't succeed. Although I'm not a fan of extension methods, I will say that if you ever find yourself at an impasse with a die-hard fan of either the utility class or extension method approach, then there is a common ground.  Extension methods are defined in static classes, and you call them from those static classes as well as directly from the objects they extend.  So if you build your utility classes using extension methods, then you can have it your way and they can have it theirs. 

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• Programmer + Drugs =? [closed]

  - by sytycs

  I just read this quote from Steve Jobs: "Doing LSD was one of the two or three most important things I have done in my life." Now I'm wondering: Has there ever been a study where programmers have been given drugs to see if they could produce "better" code? Is there a programming concept, which originated from people who where drug-users? Do you know of a piece of code, which was written by someone under the influence? EDIT So I did a little more research and it turns out Dennis R. Wier actually documented how he took LSD to wrap his head around a coding project: "At one point in the project I could not get an overall viewpoint for the operation of the entire system. It really was too much for my brain to keep all the subtle aspects and processing nuances clear so I could get a processing and design overview. After struggling with this problem for a few weeks, I decided to use a little acid to see if it would enable a breakthrough, because otherwise, I would not be able to complete the project and be certain of a consistent overall design"[1] There is also an interesting article on wired about Kevin Herbet, who used LSD to solve tough technical problems and chemist Kary Mullis even said "...that LSD had helped him develop the polymerase chain reaction that helps amplify specific DNA sequences." [2]

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• Is there any evidence that drugs can actually help programmers produce "better" code? [closed]

  - by sytycs

  I just read this quote from Steve Jobs: "Doing LSD was one of the two or three most important things I have done in my life." Also a quote from that article: He was hardly alone among computer scientists in his appreciation of hallucinogenics and their capacity to liberate human thought from the prison of the mind. Now I'm wondering if there's any evidence to support the theory that drugs can help make a "better" programmer. Has there ever been a study where programmers have been given drugs to see if they could produce "better" code? Is there a well-known programming concept or piece of code which originated from people who were on drugs? EDIT So I did a little more research and it turns out Dennis R. Wier actually documented how he took LSD to wrap his head around a coding project: "At one point in the project I could not get an overall viewpoint for the operation of the entire system. It really was too much for my brain to keep all the subtle aspects and processing nuances clear so I could get a processing and design overview. After struggling with this problem for a few weeks, I decided to use a little acid to see if it would enable a breakthrough, because otherwise, I would not be able to complete the project and be certain of a consistent overall design"[1] There is also an interesting article on wired about Kevin Herbet, who used LSD to solve tough technical problems and chemist Kary Mullis even said "...that LSD had helped him develop the polymerase chain reaction that helps amplify specific DNA sequences." [2]

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• SQL – Crossword Puzzle Based on Course Building Successful High Traffic Profitable Blog

  - by Pinal Dave

  Do you like Crossword Puzzles? I personally love it. Everytime I open the newspaper, I try to resolve at least one crossword or sudoku. It is just fun to tease a brain little and stretch its limits. Regular readers of the blogs are aware that I have recently published two courses on how to build successful high traffic profitable blog. Here are the links to watch both the courses: Course 1, Course 2. Do watch them in order as both the courses have unique content, which can help you build a better blog. On my birthday July 30th, there was an interesting blog post posted on Pluralsight blog. It was a crossword build from my two courses. I encourage you try to solve the crossword which I have built. Giveaway: There is a cool gift for the winner – it is melting clock. Do not confuse this as a dummy or not working clock. This looks like melting but it always shows accurate time and it is perfectly balanced to hang off of any flat surface. How to Participate: Well, it is very simple, you just have to complete the crossword and send it to me at pinal at sqlauthority.com with all valid answers. The deadline is that you must send it before Monday August 5, 2013 or before the valid answer keys are posted on Pluralsight blog. Hints: Though the crossword is very easy and intuitive, if you ever get stuck anywhere here are two hints: Hint 1, Hint 2. Login to Pluralsight courses and watch both the courses. Watching the course will not only help you to easily complete crossword but there are hidden gems and secrets to build a high traffic profitable blog. Here is the link to download the crossword: Download Crossword. Alternatively you can download the image displayed below and print it as well.   Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: About Me, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Blogging

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• How do you stay productive when dealing with extremely badly written code?

  - by gaearon

  I don't have much experience in working in software industry, being self-taught and having participated in open source before deciding to take a job. Now that I work for money, I also have to deal with some unpleasant stuff, which is normal of course. Recently I was assigned to add logging to a large SharePoint project which is written by some programmer who obviously was learning to code on the job. After 2 years of collaboration, the client switched to our company, but the damage was done, and now somehow I need to maintain this code. Not that the code was too hard to read. Despite problems - each project has one class with several copy-pasted methods, enormous if nestings, Systems Hungarian, undisposed connections — it's still readable. However, I found myself absolutely unproductive despite working on something as simple as adding logging. Basically, I just need to go through the code step by step and add some trace calls. However, the idiocy of the code is so annoying that I get tired within 10 minutes of starting. In the beginning, I used to add using constructs, reduce nesting by reversing if's, rename the variables to readable names—but the project is large, and eventually I gave up. I know this is not the task I should be doing, but at least reducing the mess gave me some kind of psychological reward so I could keep going. Now the trick stopped working, and I still have 60% of my work to do. I started having headaches after work, and I no longer get the feeling of satisfaction I used to get - which would usually allow me to code for 10 hours straight and still feel fresh. This is not just one big rant, for I really do have an actual question: Is there a way to stay productive and not to fight the windmills? Is there some kind of psychological trick to stay focused on the task, instead of thinking “How stupid is that?” each time I see another clever trick by the previous programmer? The problem with adding logging is that I actually have to understand what the code does, and doing so hurts my brain in an unpleasant fashion.

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• PASS Summit 2011 &ndash; Part II

  - by Tara Kizer

  I arrived in Seattle last Monday afternoon to attend PASS Summit 2011.  I had really wanted to attend Gail Shaw’s (blog|twitter) and Grant Fritchey’s (blog|twitter) pre-conference seminar “All About Execution Plans” on Monday, but that would have meant flying out on Sunday which I couldn’t do.  On Tuesday, I attended Allan Hirt’s (blog|twitter) pre-conference seminar entitled “A Deep Dive into AlwaysOn: Failover Clustering and Availability Groups”.  Allan is a great speaker, and his seminar was packed with demos and information about AlwaysOn in SQL Server 2012.  Unfortunately, I have lost my notes from this seminar and the presentation materials are only available on the pre-con DVD.  Hmpf! On Wednesday, I attended Gail Shaw’s “Bad Plan! Sit!”, Andrew Kelly’s (blog|twitter) “SQL 2008 Query Statistics”, Dan Jones’ (blog|twitter) “Improving your PowerShell Productivity”, and Brent Ozar’s (blog|twitter) “BLITZ! The SQL – More One Hour SQL Server Takeovers”.  In Gail’s session, she went over how to fix bad plans and bad query patterns.  Update your stale statistics! How to fix bad plans Use local variables – optimizer can’t sniff it, so it’ll optimize for “average” value Use RECOMPILE (at the query or stored procedure level) – CPU hit OPTIMIZE FOR hint – most common value you’ll pass How to fix bad query patterns Don’t use them – ha! Catch-all queries Use dynamic SQL OPTION (RECOMPILE) Multiple execution paths Split into multiple stored procedures OPTION (RECOMPILE) Modifying parameter values Use local variables Split into outer and inner procedure OPTION (RECOMPILE) She also went into “last resort” and “very last resort” options, but those are risky unless you know what you are doing.  For the average Joe, she wouldn’t recommend these.  Examples are query hints and plan guides. While I enjoyed Andrew’s session, I didn’t take any notes as it was familiar material.  Andrew is a great speaker though, and I’d highly recommend attending his sessions in the future. Next up was Dan’s PowerShell session.  I need to look into profiles, manifests, function modules, and function import scripts more as I just didn’t quite grasp these concepts.  I am attending a PowerShell training class at the end of November, so maybe that’ll help clear it up.  I really enjoyed the Excel integration demo.  It was very cool watching PowerShell build the spreadsheet in real-time.  I must look into this more!  On a side note, I am jealous of Dan’s hair.  Fabulous hair! Brent’s session showed us how to quickly gather information about a server that you will be taking over database administration duties for.  He wrote a script to do a fast health check and then later wrapped it into a stored procedure, sp_Blitz.  I can’t wait to use this at my work even on systems where I’ve been the primary DBA for years, maybe there’s something I’ve overlooked.  We are using EPM to help standardize our environment and uncover problems, but sp_Blitz will definitely still help us out.  He even provides a cloud-based update feature, sp_BlitzUpdate, for sp_Blitz so you don’t have to constantly update it when he makes a change.  I think I’ll utilize his update code for some other challenges that we face at my work.

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• ArchBeat Link-o-Rama for October 22, 2013

  - by OTN ArchBeat

  The road ahead for WebLogic 12c | Edwin Biemond Oracle ACE Edwin Biemond shares his thoughts on announced new features in Oracle WebLogic 12.1.3 & 12.1.4 and compares those upcoming releases to Oracle WebLogic 12.1.2. Oracle BI Apps 11.1.1.7.1 – GoldenGate Integration - Part 2: Setup and Configuration | Michael Rainey Michael Rainey continues his series with another technical article for you GoldenGate fans. There's A Virtual Developer Day in Your Future Have you experienced OTN VDD? Relax, it's not something that requires medical attention. But an OTN Virtual Developer Day event will enlarge your brain with hands-on information on Oracle technologies. Upcoming events will cover Oracle WebLogic and Coherence (Nov 5) and Oracle ADF (Nov 19). My Summary of Oracle Open World 2013 | Luis Weir SOA/Middleware specialist Luis Weir's first trip to Oracle OpenWorld was what you might call a total immersion experience. His blog post includes details about what kept him very, very busy during his OOW13 experience. Live Blog: Book Review of Building Modular Cloud Apps with OSGi by Bert Ertman and Paul Bakker | Lucas Jellema This interesting post from Oracle ACE Director Lucas Jellema is a work in progress. He's updating as he goes. Check it out. Thought for the Day padding-left: 20px; padding-right: 20px;"> "In the information age, you don't teach philosophy as they did after feudalism. You perform it. If Aristotle were alive today he'd have a talk show." — Timothy Leary, American psychologist and writer (October 22, 1920 – May 31, 1996) Source: brainyquote.com

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• perl comparing 2 data file as array 2D for finding match one to one [migrated]

  - by roman serpa

  I'm doing a program that uses combinations of variables ( combiData.txt 63 rows x different number of columns) for analysing a data table ( j1j2_1.csv, 1000filas x 19 columns ) , to choose how many times each combination is repeated in data table and which rows come from (for instance, tableData[row][4]). I have tried to compile it , however I get the following message : Use of uninitialized value $val in numeric eq (==) at rowInData.pl line 34. Use of reference "ARRAY(0x1a2eae4)" as array index at rowInData.pl line 56. Use of reference "ARRAY(0x1a1334c)" as array index at rowInData.pl line 56. Use of uninitialized value in subtraction (-) at rowInData.pl line 56. Modification of non-creatable array value attempted, subscript -1 at rowInData.pl line 56. nothing This is my code: #!/usr/bin/perl use strict; use warnings; my $line_match; my $countTrue; open (FILE1, "<combiData.txt") or die "can't open file text1.txt\n"; my @tableCombi; while(<FILE1>) { my @row = split(' ', $_); push(@tableCombi, \@row); } close FILE1 || die $!; open (FILE2, "<j1j2_1.csv") or die "can't open file text1.txt\n"; my @tableData; while(<FILE2>) { my @row2 = split(/\s*,\s*/, $_); push(@tableData, \@row2); } close FILE2 || die $!; #function transform combiData.txt variable (position ) to the real value that i have to find in the data table. sub trueVal($){ my ($val) = $_[0]; if($val == 7){ return ('nonsynonymous_SNV'); } elsif( $val == 14) { return '1'; } elsif( $val == 15) { return '1';} elsif( $val == 16) { return '1'; } elsif( $val == 17) { return '1'; } elsif( $val == 18) { return '1';} elsif( $val == 19) { return '1';} else { print 'nothing'; } } #function IntToStr ( ) , i'm not sure if it is necessary) that transforms $ to strings , to use the function <eq> in the third loop for the array of combinations compared with the data array . sub IntToStr { return "$_[0]"; } for my $combi (@tableCombi) { $line_match = 0; for my $sheetData (@tableData) { $countTrue=0; for my $cell ( @$combi) { #my $temp =\$tableCombi[$combi][$cell] ; #if ( trueVal($tableCombi[$combi][$cell] ) eq $tableData[$sheetData][ $tableCombi[$combi][$cell] - 1 ] ){ #if ( IntToStr(trueVal($$temp )) eq IntToStr( $tableData[$sheetData][ $$temp-1] ) ){ if ( IntToStr(trueVal($tableCombi[$combi][$cell]) ) eq IntToStr($tableData[$sheetData][ $tableCombi[$combi][$cell] -1]) ){ $countTrue++;} if ($countTrue==@$combi){ $line_match++; #if ($line_match < 50){ print $tableData[$sheetData][4]." "; #} } } } print $line_match." \n"; }

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• What can go wrong with a GLIBC upgrade?

  - by Sevenless

  I recently installed a piece of software that my group needs for a research project starting next September. Turns out the software has a known crash bug when used with glibc 2.12.1. My boss asked if we can upgrade glibc on the server that's supposed to run it. Cue my skeptical silence.... At some point, I got it into my brain that messing with glibc was about as good an idea as messing with a hungry puma; however, I've been unable to determine the source of this belief. So, if I go ahead with this: Am I doing something flagrantly stupid (e.g. I won't fix my problem, I will brick my server, or I will initiate a zombie apocalypse)? What can go wrong? What is likely to go wrong? How do I avoid the answers to 2 and 3?

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• Restful Java based web services in json + html5 and javascript no templates (jsp/jsf/freemarker) aka fat/thick client

  - by Ismail Marmoush

  I have this idea of building a website which service JSON data through restful services framework. And will not use any template engines like jsp/jsf/freemarker. Just pure html5 and Javascript libs. What do you think of the pros and cons of such design ? Just for elaboration and brain storming a friend of mine argued with the following concerns: sounds like gwt this way you won't have any control over you service api for example say you wanna charge the user per request how will you handle it? how will you control your design and themes? what about the 1st request the browser make? not easy with this all of the user's requests will come with "Accept" header "application/json" how will you separate browser from abuser? this way all of your public apis will be used by third party apps abusively and you won't be able to lock it since you won't be able to block the normal user browser We won't use compiled html anyway but may be something like freemarker and in that case you won't expose any of your json resources to the unauthorized user but you will expose all the html since any browser can access them all the well known 1st class services do this can you send me links to what you've read? keep in mind the DOM based XSS it will be a nightmare ofc, if what you say is applicable.

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• A lot has happened since last post!!!!!!!!!

  - by Ratman21

  And I mean a lot! First off had two interviews (one was selling insurance) and other installing cable. I have more hope for the cable one. Getting more emails from my job search engines (having problems with going through them and applying for those jobs, I know I can do). It seems the more I apply to, the more job emails pop up in my in box. But at the same time I am fighting feelings of worthlessness (18 months and no job). It is putting a strain on my marriage (We had had blow out over a broken drinking glass since I last posted).     But, at the same time, I am fighting mad about (a figure of speech, really) not having a job. Look just because I am over 55 and have gray hair. It does not mean, my brain is dead or I can not longer trouble shoot a router or circuit or LAN issue. Or that I can do “IT” work at all. And I could prove this if; some one would give me at job. Come on try me for 90 days at min. wage.   I know you will end up keeping me (hope fully at normal pay) around. Is any one hearing me…come on take up the challenge!

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• How to write simple code using TDD [migrated]

  - by adeel41

  Me and my colleagues do a small TDD-Kata practice everyday for 30 minutes. For reference this is the link for the excercise http://osherove.com/tdd-kata-1/ The objective is to write better code using TDD. This is my code which I've written public class Calculator { public int Add( string numbers ) { const string commaSeparator = ","; int result = 0; if ( !String.IsNullOrEmpty( numbers ) ) result = numbers.Contains( commaSeparator ) ? AddMultipleNumbers( GetNumbers( commaSeparator, numbers ) ) : ConvertToNumber( numbers ); return result; } private int AddMultipleNumbers( IEnumerable getNumbers ) { return getNumbers.Sum(); } private IEnumerable GetNumbers( string separator, string numbers ) { var allNumbers = numbers .Replace( "\n", separator ) .Split( new string[] { separator }, StringSplitOptions.RemoveEmptyEntries ); return allNumbers.Select( ConvertToNumber ); } private int ConvertToNumber( string number ) { return Convert.ToInt32( number ); } } and the tests for this class are [TestFixture] public class CalculatorTests { private int ArrangeAct( string numbers ) { var calculator = new Calculator(); return calculator.Add( numbers ); } [Test] public void Add_WhenEmptyString_Returns0() { Assert.AreEqual( 0, ArrangeAct( String.Empty ) ); } [Test] [Sequential] public void Add_When1Number_ReturnNumber( [Values( "1", "56" )] string number, [Values( 1, 56 )] int expected ) { Assert.AreEqual( expected, ArrangeAct( number ) ); } [Test] public void Add_When2Numbers_AddThem() { Assert.AreEqual( 3, ArrangeAct( "1,2" ) ); } [Test] public void Add_WhenMoreThan2Numbers_AddThemAll() { Assert.AreEqual( 6, ArrangeAct( "1,2,3" ) ); } [Test] public void Add_SeparatorIsNewLine_AddThem() { Assert.AreEqual( 6, ArrangeAct( @"1 2,3" ) ); } } Now I'll paste code which they have written public class StringCalculator { private const char Separator = ','; public int Add( string numbers ) { const int defaultValue = 0; if ( ShouldReturnDefaultValue( numbers ) ) return defaultValue; return ConvertNumbers( numbers ); } private int ConvertNumbers( string numbers ) { var numberParts = GetNumberParts( numbers ); return numberParts.Select( ConvertSingleNumber ).Sum(); } private string[] GetNumberParts( string numbers ) { return numbers.Split( Separator ); } private int ConvertSingleNumber( string numbers ) { return Convert.ToInt32( numbers ); } private bool ShouldReturnDefaultValue( string numbers ) { return String.IsNullOrEmpty( numbers ); } } and the tests [TestFixture] public class StringCalculatorTests { [Test] public void Add_EmptyString_Returns0() { ArrangeActAndAssert( String.Empty, 0 ); } [Test] [TestCase( "1", 1 )] [TestCase( "2", 2 )] public void Add_WithOneNumber_ReturnsThatNumber( string numberText, int expected ) { ArrangeActAndAssert( numberText, expected ); } [Test] [TestCase( "1,2", 3 )] [TestCase( "3,4", 7 )] public void Add_WithTwoNumbers_ReturnsSum( string numbers, int expected ) { ArrangeActAndAssert( numbers, expected ); } [Test] public void Add_WithThreeNumbers_ReturnsSum() { ArrangeActAndAssert( "1,2,3", 6 ); } private void ArrangeActAndAssert( string numbers, int expected ) { var calculator = new StringCalculator(); var result = calculator.Add( numbers ); Assert.AreEqual( expected, result ); } } Now the question is which one is better? My point here is that we do not need so many small methods initially because StringCalculator has no sub classes and secondly the code itself is so simple that we don't need to break it up too much that it gets confusing after having so many small methods. Their point is that code should read like english and also its better if they can break it up earlier than doing refactoring later and third when they will do refactoring it would be much easier to move these methods quite easily into separate classes. My point of view against is that we never made a decision that code is difficult to understand so why we are breaking it up so early. So I need a third person's opinion to understand which option is much better.

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• Which subnet masks are valid for a subnetted Class B address?

  - by Daddy Warbox

  Yes, this is a school question, and yes I already know the correct possible answers (supposedly), so I'm not going to bother posting them. Instead, I just want to understand the meaning of this question. I know what class B addresses are, and what valid class B subnet addresses are. I guess one way to define my question is to ask why the answer "255.255.0.0" is wrong, necessarily? That seems to defy my understanding, or else some part of my brain is just not registering the question correctly. Thanks in advance.

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• What are the possible options for AI path-finding etc when the world is "partitionned"?

  - by Sebastien Diot

  If you anticipate a large persistent game world, and you don't want to end up with some game server crashing due to overload, then you have to design from the ground up a game world that is partitioned in chunks. This is in particular true if you want to run your game servers in the cloud, where each individual VM is relatively week, and memory and CPU are at a premium. I think the biggest challenge here is that the player receives all the parts around the location of the avatar, but mobs/monsters are normally located in the server itself, and can only directly access the data about the part of the world that the server own. So how can we make the AI behave realistically in that context? It can send queries to the other servers that own the neighboring parts, but that sounds rather network intensive and latency prone. It would probably be more performant for each mob AI to be spread over the neighboring parts, and proactively send the relevant info to the part that contains the actual mob atm. That would also reduce the stress in a mob crossing a border between two parts, and therefore "switching server". Have you heard of any AI design that solves those issues? Some kind of distributed AI brain? Maybe some kind of "agent" community working together through message passing?

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• For how long do I need to store the logs?

  - by mindas

  I will soon be running an internet-based public service which will physically be hosted in the UK on a virtual server. The virtual server is provided by the ISP. I was wondering if there is/are any legal requirement(s) to keep access logs, and if yes - for how long? There is a Wikipedia article that touches this subject but I'm afraid my brain just can't grasp the legislative gibberish. I believe there's EU law and there's UK law; and I do need to comply to both, right? Can somebody explain this in pure layman's terms?

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• ArchBeat Link-o-Rama for 10-17-2012

  - by Bob Rhubart

  This is your brain on IT architecture. Oracle Technology Network Architect Day in Los Angeles, Oct 2 Stuff your cranium with architecture by attending Oracle Technology Network Architect Day in Los Angeles, October 25, 2012, at the Sofitel Los Angeles, 8555 Beverly Boulevard, Los Angeles, CA 90048. Technical sessions, panel Q&A, and peer roundtables—plus a free lunch. Register now. Panel: On the Impact of Software | InfoQ Les Hatton (Oakwood Computing Associates), Clive King (Oracle), Paul Good (Shell), Mike Andrews (Microsoft) and Michiel van Genuchten (moderator) discuss the impact of software engineering on our lives in this panel discussion recorded at the Computer Society Software Experts Summit 2012. OTN APAC Tour 2012: Bangkok, Thailand - Oct 22, 2012 Mike Dietrich shares information on the upcoming OTN APAC Tour stop in Bangkok. Registration is open. Consolidating Oracle E-Business Suite R12 on Oracle's SPARC SuperCluster | Giri Mandalika Giri Mandalika shares an overview of a new Optimized Solution for Oracle E-Business Suite (EBS) R12 12.1.3.. As Giri explains, "This solution was centered around the engineered system, SPARC SuperCluster T4-4." The Oldest Big Data Problem: Parsing Human Language | The Data Warehouse Insider Dan McClary offers up a new whitepaper "which details the use of Digital Reasoning Systems' Synthesys software on Oracle Big Data Appliance." Mobile Apps for EBS | Capgemini Oracle Blog Capgemini solution architect Satish Iyer breifly describes how Oracle ADF and Oracle SOA Suite can be used to fill the gap in mobile applications for Oracle EBS. Ease the Chaos with Automated Patching: Enterprise Manager Cloud Control 12c | Porus Homi Havewala This new OTN article is excerpted from Porus Homi Havewala's latest book, Oracle Enteprise Manager Cloud Control 12c: Managing Data Center Chaos (2012, Packt Publishing). Thought for the Day "Never make a technical decision based upon the politics of the situation, and never make a political decision based upon technical issues." — Geoffrey James Source: softwarequotes.com

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