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• The DBA Team tackles data corruption

  Paul Randal joins the team in this instalment of the DBA Team saga. In this episode, Monte Bank is trying to cover up insider trading - using data corruption to eliminate the evidence, and a patsy DBA to take the blame. It's a great story with useful advice on how to perform thorough data recovery tasks. "A real time saver" Andy Doyle, Head of IT ServicesAndy and his team saved time by automating backup and restores with SQL Backup Pro. Find out how much time you could save. Download a free trial now.

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• How To Deliberately Hide Bugs In Code (for use in a Novel I'm writing) [closed]

  - by Dennis Murphy

  I'm writing a novel in which an evil programmer wants to include subtle errors in his code that are likely to go unnoticed by his supervisor during a code review and unlikely to be caught by a compiler, yet cause damage at possibly random times when the program is executed by an end-user. I only need a couple of examples, which may be exotic but which have to be easily explainable to non-technical readers. Procedural or object-oriented examples would be equally helpful. (It's been a VERY long time since I've written any code.) Thanks for your help.

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• Android sera désormais mis à jour annuellement, pour éviter sa fragmentation face à la profusion de

  Android sera désormais mis à jour annuellement, pour éviter sa fragmentation face à la profusion de versions existantes Le responsable d'Android chez Google, Andy Rubin, vient de faire une annonce importante : les mises à jour d'Android deviendront très bientôt annuelles. Cette décision a été prise dans l'intérêt de la plateforme, afin d'en réduire la fragmentation provoquée par l'arrivée continuelle de nouvelles versions. D'autant plus que la majorité des téléphones embarquent une version d'Android modifiée par son constructeur. Chaque mise à jour du logiciel demande donc en plus une actualisation du skin du fabriquant. Des updates planifiées sur une base annuelle apporteront en confort et en simplicité, autant pour...

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• where does the discrepancy between \# in PS1 and n in !n come from?

  - by Cbhihe

  Something has been gnawing at me for a while now and I can't seem to find a relevant answer either in man pages or using your 'Don't be evil' search engine. My .bashrc has the following: shopt -s histappend HISTSIZE=100 HISTFILESIZE=0 # 200 previous value Putting HISTFILESIZE to 0 allows me to start with a clean history slate with each new term window. I find it practical in conjunction with using a prompt that contains \#, because when visualizing a previous command before recalling it with !n or !-p, one can just do: $ history | more to see its relevant "n" value In my case, usually the result of: $ \history | tail -1 | awk '{print $1}' # (I know this is an overkill, don't flame me) equals the expanded value of # in PS1 minus 1, which is how I like it to be at all times. But then, sometimes not. At times the expanded value of # sort of "runs away". It's incremented in such a a manner that it becomes than $(( $(\history | tail -1 | awk '{print $1}')+1 )) Any pointers, anyone?

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• 3rd Annual South Florida SQL Saturday - August 13th!

  - by ScottKlein

  The 3rd annual South Florida SQL Saturday event will be help August 13th, 2011 at Nova Southeastern University in Davie, FL. This is a change in venue from last year as DeVry is in the middle of a major remodling project. We has almost 450 last year, and we expect to have over 500 this year with great speakers such as Andy Warren, Herve Roggero, and more! As always, we our goal is to feed you well, so we are shooting for some hot lunch food this year. We are working on that now and will update you as soon as we firm it up. One of the things we will be trying this year is 90-100 minute sessions on a couple of tracks. We strongly feel that several topics are just getting warmed up in 45 minutes, so we are going to experiment with 90-100 minute sessions on some of the BI topics. We would love to see you there!

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• Disaster In The Real World - #2

  Back in April Steve Jones wrote up a disaster at work. Andy had one this week and wrote up the story too. Copy cat! Pretty soon everyone will be having a disaster and writing a story about it! Give these guys credit for letting you see what happens when it ALL goes bad. Disaster recovery is hard to sell and hard to do, reading the article might give you an idea that will save you some time and/or data one day.

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• Need some help on tomcat URL mod_rewrite or mod_jk

  - by Redbull Fan

  I am trying to remove the context name from the url of my server. Current URL - http://www.domainname.com/MyApp/ What I need to make is to make it avaialble at - www.domainname.com/ So it is only going to host one main app and that needs to be displayed when we open www.domainname.com/ on browser. I have already tried couple of things like below - RewriteEngine On RewriteCond %{REQUEST_URI} !^/(Context/.*)$ RewriteRule ^/(.*)$ /Context/$1 [P,L] OR redirect permanent /MyApp/ abcd://domainname.com OR Using JKMount - JkMount /MyApp/* ajp13 JkMount /MyApp* ajp13 OR Deploy war file to ROOT of tomcat and make relevant chagnes in web and server.xml All of these aren't working and I keep getting a intenal error. I need a way to basically trim the tomcat URL to make short. Thanks, Andy

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• How to draw unlimited FPS on Mac OS X with OpenGL?

  - by V1ru8

  I d'like to draw as many frames as possible with OpenGL on Mac OS X to measure the performance on different scenes. What I've tried so far: Using a CVDisplayLink that has NSOpenGLCPSwapInterval set to 0, so it does not sync with the Display. But with that it's still stuck at max 60FPS Using normal -drawRect: with a timer that fires 1/1000sec and calls -setNeedsDisplay: Still not more than 60FPS Same as 2. but I call -display in the timer callback. With that I get the FPS above 60, but it still stops at 100-110 FPS. Although the frame rate should easily be at 10times more. Andy idea how I can really draw as many frames as possible?

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• How do I create a fire sphere (fireball) in opengl? (opengl Visual C++)

  - by gn66

  I'm making an evil Pacman in OpenGL and I need to make my spheres look like a fireballs, does anyone know how I do that? And what material colour should I use? Also, is there a colour palette to change the colour of my materials? This is how I create a sphere: GLfloat mat_ambient[] = { 0.25, 0.25, 0.25, 1.0 }; GLfloat mat_diffuse[] = { 0.4, 0.4, 0.4, 1.0 }; GLfloat mat_specular[] = { 0.774597, 0.774597, 0.774597, 1.0 }; GLfloat mat_shine = 0.6; glMaterialfv (GL_FRONT, GL_AMBIENT, mat_ambient); glMaterialfv (GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv (GL_FRONT, GL_SPECULAR, mat_specular); glMaterialf (GL_FRONT, GL_SHININESS, mat_shine * 128); glPushMatrix(); glTranslatef(x,y,0); glutSolidSphere(size, 20, 10); glFlush(); glPopMatrix();

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• Moving Data From Excel to SQL Server - 10 Steps to Follow

  SQL Server Integration Services provide a versatile way of reading Excel files into SQL Server. A task like this illustrates the advantages of the graphical approach of SSIS. Andy Brown explains. Want to work faster with SQL Server?If you want to work faster try out the SQL Toolbelt. "The SQL Toolbelt provides tools that database developers as well as DBAs should not live without." William Van Orden. Download the SQL Toolbelt here.

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• Layering Design Pattern in Java clean code style

  - by zeraDev

  As a Java developer, I am developing trying to use the clean code rules. But in my team we are facing a concrete problem: We have a business layer offering a service called "createObject", this service makes a lot of operation which can result to problem. E.g: parentObjectDontExist, objectAlreadyExist, dontHaveAuthorizationToCreate, operationFailed... and we want the UI using this service to display different information messages depending which error occurred. In old java dev, we should have create all signed exception type and throw it in createObject. As Clean code says, it is forbidden to use Exception for business logic AND signed exceptions are evil... Why not...But i don't know how to solved this problem and i don't want to use return code. How do you do? Thanks for youre experience return.

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• SQL Why is prefixing column names considered bad practice?

  - by P.Brian.Mackey

  According to a popular SO post is it considered a bad practice to prefix table names. At my company every column is prefixed by a table name. This is difficult for me to read. I'm not sure the reason, but this naming is actually the company standard. I can't stand the naming convention, but I have no documentation to back up my reasoning. All I know is that reading AdventureWorks is much simpler. In this our company DB you will see a table, Person and it might have column name: Person_First_Name or maybe even Person_Person_First_Name (don't ask me why you see person 2x) Why is it considered a bad practice to pre-fix column names? Are underscores considered evil in SQL as well? Note: I own Pro SQL Server 2008 - Relation Database design and implementation. References to that book are welcome.

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• Is a function plotter a legitimate use of eval() in JavaScript?

  - by moose

  From PHP development I know that eval is evil and I've recently read What constitutes “Proper use” of the javascript Eval feature? and Don't be eval. The only proper use of eval I've read is Ajax. I'm currently developing a visualization tool that lets users see how polynomials can interpolate functions: Example Code on GitHub I use eval for evaluation of arbitrary functions. Is this a legitimate use of eval? How could I get rid of eval? I want the user to be able to execute any function of the following forms: a x^i with a,i in R sin, cos, tan b^x with b in R any combination that you can get by adding (e.g. x^2 + x^3 + sin(x)), multiplying (e.g. sin(x)*x^2) or inserting (e.g. sin(x^2))

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• How do I know if I've gone too far with processing things in a game?

  - by ThePlan

  A common programming quote I see every day is: Premature optimization is the root of all evil! I admit I'm one of those guys that like to do premature optimization in a pretty obssessive manner but that's probably because I'm not aware how powerful modern processors are. I can think of lots of sollutions for a problem, but all of them are tough on the memory side, and I keep thinking "This will hurt me more in the future when I'll have to re-do it because it's bad performance-wise." How do you know when the code you are thinking of is going too far and is not a case of premature optimization? How much can your game handle at a time before performance becomes a problem?

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• Free eBook: SQL Server Execution Plans, Second Edition

  Every day, out in the various online forums devoted to SQL Server, and on Twitter, the same types of questions come up repeatedly: Why is this query running slowly? Why is SQL Server ignoring my index? Why does this query run quickly sometimes and slowly at others? My response is the same in each case: have you looked at the execution plan? "A real time saver" Andy Doyle, Head of IT ServicesAndy and his team saved time by automating backup and restores with SQL Backup Pro. Find out how much time you could save. Download a free trial now.

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• Free course on Java Embedded on the Raspberry Pi?

  - by A Tael

  Oracle is developing a free, on-line course on developing Oracle Java Embedded applications using a Raspberry Pi as the development platform. The course teaches experienced Java SE developers how to design and develop applications using Java ME Embedded 8 EA on a Raspberry Pi with physical devices, including: switches and Light Emitting Diodes (LED); temperature/barometric pressure sensors; Global Positioning System (GPS) sensors; and system interrupt timers. Additional modules include logging, threads, network I/O, file I/O, record management service, push registry, application management services and best practices for headless embedded devices.Sounds like great fun doesn't it? Read more about the course and give us your feedback in this short survey. <<Andy>>

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• Java DefaultHTTPClient automatically handle cookies

  - by RenegadeAndy

  Hi, I have a piece of code using the DefaultHttpClient and it makes a post request to login to a website. However subsequent requests appear to have forgotten the fact im signed in. How do i turn on automatic cookie handling of the DefaultHttpClient I am using? Cheers, Andy

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• Why is casting Derived** to Base*const* forbidden ?

  - by smerlin

  After reading this question, i saw the answer by Naveen containing a link to this page, which basically says, that casting from Derived** to Base** is forbidden since could change a pointer to an pointer to a Derived1 object point to a pointer to a Derived2 object (like: *derived1PtrPtr=derived2Ptr). OK, i understand this is evil ... But when casting Derived** to Base*const* this is not even possible, so whats the reason that this is not allowed anyway ?

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• Casting of interfaces

  - by Srinivas Reddy Thatiparthy

  interfaces provide a useful abstraction capability. One can have a class Foo implement some interfaces, say A, B, and C. Some client code may get a reference of type A, others one of type B, etc. each actually the same Foo object but the interface exposing only a narrow subset of the functionality. Of course, evil client code can try to cast the A reference to Foo, then access the other functionality.How to prevent this?

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• Google Ajax search API

  - by jAndy

  Hi Folks, I'm wondering, is it possible to receive google results over their own ajax API in a way like, 100 results per page? Without a visible search field, I'd like to get the results in the background to create a progression for some search phrases. My basic question is, what are the restrictions of the google search api ? Kind Regards --Andy

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• Flex 4 IntelliJ IDEA wrapper html crashes browser

  - by user347641

  I'm building an Flex 4 application using IntelliJ IDEA generated sample Flex application. I replace the mxml with the following code from the book Hello Flex 4. It simply crashes the browser when I run it. I tried it on both FF and Chrome. Any clues? [Bindable] public var _bread:Number = Number.NaN; ]]></fx:Script> <fx:Declarations> <s:RadioButtonGroup id="moralityRBG"/> <s:RadioButtonGroup id="restaurantRBG" selectedValue="{_theory.length % 2 == 0 ? 'smoking' : 'non'}"/> </fx:Declarations> <s:Panel width="100%" height="100%" title="Simple Components!"> <s:layout> <s:HorizontalLayout paddingLeft="5" paddingTop="5"/> </s:layout> <s:VGroup> <s:TextArea id="textArea" width="200" height="50" text="@{_theory}"/> <s:TextInput id="textInput" width="200" text="@{_theory}"/> <s:HSlider id="hSlider" minimum="0" maximum="11" liveDragging="true" width="200" value="@{_bread}"/> <s:VSlider id="vSlider" minimum="0" maximum="11" liveDragging="true" height="50" value="@{_bread}"/> <s:Button label="{_theory}" width="200" color="{alarmTB.selected ? 0xFF0000 : 0}" click="_bread = Math.min(_theory.length, 11)"/> <s:CheckBox id="checkBox" selected="{_bread % 2 == 0}" label="even?"/> </s:VGroup> <s:VGroup> <s:RadioButton label="Good" value="good" group="{moralityRBG}"/> <s:RadioButton label="Evil" value="evil" group="{moralityRBG}"/> <s:RadioButton label="Beyond" value="beyond" group="{moralityRBG}"/> <s:RadioButton label="Smoking" value="smoking" group="{restaurantRBG}"/> <s:RadioButton label="Non-Smoking" value="non" group="{restaurantRBG}"/> <s:ToggleButton id="alarmTB" label="ALARM!"/> <s:NumericStepper id="numericStepper" value="@{_bread}" minimum="0" maximum="11" stepSize="1"/> <s:Spinner id="spinner" value="@{_bread}" minimum="0" maximum="11" stepSize="1"/> </s:VGroup> </s:Panel>

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• Crossdomain settings in Google Chrome

  - by jAndy

  Hi Folks, I'm wondering, in IE & Firefox you're able to setup the browser, to allow cross-domain calls. I can't find any option in chrome for that (actually, there are in general not too much options at all...) are there any about:config like things? Kind Regards --Andy

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• 'on the web' drupal module showing images on localhost but not remote host

  - by Andrew Welch

  Hi, the simple little module titled 'on the web' for drupal shows social network links. It links to some images on the directory. on my localhost install they are showing but in the remote install the img tags aren't even appearing. I looked in the module's files and the path isn't hard-coded or anything so it's not to do with that. any ideas? the module is here: http://drupalmodules.com/module/on-the-web cheers andy

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• Perl Threads with binmode

  - by jAndy

  Hi Folks, this call my $th = threads->create(\&print, "Hello thread World!\n"); $th->join(); works fine. But as soon as I add binmode(STDOUT, ":encoding(ISO-8859-1)"); to my script file, I get an error like "segmentation fault", "access denied". What is wrong to define an encoding type when trying to call a perl thread? Kind Regards --Andy

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• Validation framework for .NET Compact Framework 3.5.

  - by Michal Drozdowicz

  Do you know of a fast and simple entity validation framework that could be used in a Compact Framework project? I've done some experiments with FluentValidation (using db4o System.Linq.Expressions, but it's rather slow) and EViL (but it seems a bit half-baked). Can you suggest any other or maybe point me to some resources on how to design such a framework so that it's both easy to use and performant?

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