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• Web Seminar - The Oracle Database Appliance: How to Sell a Unique Product!

  - by swalker

  Dear partner, You are exclusively invited to join us for a webcast, dedicated to Oracle’s EMEA Partners, on the Oracle Database Appliance value proposition, positioning and ecosystem – to help you capture new business and help your customers roll out their solutions fast, easily, safely and with maximum cost efficiency! Join us to learn about: ODA Benefits: Fast, Easy, Cost Efficient, Highly Reliable Feedback from early Customer Wins: What can we Learn? Objection Handling: Overcoming the most common customer questions Going beyond the Database: The ODA ECO System for applications, backup & more… When combined with your high-value services (e.g., migration, consolidation), the end result is a database system that you can use to grow the business in your existing accounts, or capture new business. Join us at the EMEA partner webcast hosted by Robert Van Espelo Cloud and Virtualization Leader, EMEA Business Development on Thursday, April 12, at 9:00am UK / 10:00am CET. The presentation will be given in English. To register for this webcast click here We look forward to talking to you on April 12! Best regards,Giuseppe Facchetti EMEA Partner Business Development Manager Oracle EMEA, Hardware Sales Paul LeonardEMEA Partner Marketing Manager Oracle EMEA, Systems Marketing

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• Optimized algorithm for line-sphere intersection in GLSL

  - by fernacolo

  Well, hello then! I need to find intersection between line and sphere in GLSL. Right now my solution is based on Paul Bourke's page and was ported to GLSL this way: // The line passes through p1 and p2: vec3 p1 = (...); vec3 p2 = (...); // Sphere center is p3, radius is r: vec3 p3 = (...); float r = ...; float x1 = p1.x; float y1 = p1.y; float z1 = p1.z; float x2 = p2.x; float y2 = p2.y; float z2 = p2.z; float x3 = p3.x; float y3 = p3.y; float z3 = p3.z; float dx = x2 - x1; float dy = y2 - y1; float dz = z2 - z1; float a = dx*dx + dy*dy + dz*dz; float b = 2.0 * (dx * (x1 - x3) + dy * (y1 - y3) + dz * (z1 - z3)); float c = x3*x3 + y3*y3 + z3*z3 + x1*x1 + y1*y1 + z1*z1 - 2.0 * (x3*x1 + y3*y1 + z3*z1) - r*r; float test = b*b - 4.0*a*c; if (test >= 0.0) { // Hit (according to Treebeard, "a fine hit"). float u = (-b - sqrt(test)) / (2.0 * a); vec3 hitp = p1 + u * (p2 - p1); // Now use hitp. } It works perfectly! But it seems slow... I'm new at GLSL. You can answer this questions in two ways: Tell me there is no solution, showing some proof or strong evidence. Tell me about GLSL features (vector APIs, primitive operations) that makes the above algorithm faster, showing some example. Thanks a lot!

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• My new favourite traceflag

  - by Dave Ballantyne

  As we are all aware, there are a number of traceflags.  Some documented, some semi-documented and some completely undocumented.  Here is one that is undocumented that Paul White(b|t) mentioned almost as an aside in one of his excellent blog posts. Much has been written about residual predicates and how a predicate can be pushed into a seek/scan operation.  This is a good thing to happen,  it does save a lot of processing from having to be done.  For the uninitiated though: If we have a simple SELECT statement such as : the process that SQL Server goes through to resolve this is : The index IX_Person_LastName_FirstName_MiddleName is navigated to find the first “Smith” For each “Smith” the middle name is checked for being a null. Two operations!, and the execution plan doesnt fully represent all the work that is being undertaken. As you can see there is only a single seek operation, the work undertaken to resolve the condition “MiddleName is not null” has been pushed into it.  This can be seen in the properties. “Seek predicate” is how the index has been navigated, and “Predicate” is the condition run over every row,  a scan inside a seek!. So the question is:  How many rows have been resolved by the seek and how many by the scan ?  How many rows did the filter remove ? Wouldn’t it be nice if this operation could be split ?  That exactly what traceflag 9130 does. Executing the query: That changes the plan rather dramatically, and should be changing how we think about the index seek itself.  The Filter operator has been added and, unsurprisingly, the condition in this is “MiddleName is not null” So it is now evident that the seek operation found 103 Smiths and 60 of those Smiths had a non-null MiddleName. This traceflag has no place on a production system,  dont even think about it

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• Laptop runs HOT after 12.10 upgrade!

  - by dinkelk

  I was running 12.04 for 6 months, my laptop ran almost silently and cool enough to hold on my lap. I updated to 12.10 and now my computer gets too hot to hold on my lap and the fan is constantly running on full blast. This is the output of sensors: acpitz-virtual-0 Adapter: Virtual device temp1: +84.0°C (crit = +99.0°C) coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +84.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +74.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +72.0°C (high = +86.0°C, crit = +100.0°C) Core 2: +75.0°C (high = +86.0°C, crit = +100.0°C) Core 3: +84.0°C (high = +86.0°C, crit = +100.0°C) radeon-pci-0100 Adapter: PCI adapter temp1: +76.0°C I have an HP Pavilion dv6, i7, amd radeon graphics. Please let me know if you need additional information. What could be different between the two Ubuntu additions that caused such a drastic change? Edit 1: Per @Paul's suggestion, I ran htop to try to narrow down the problem. Here is the result! This is about 10 minutes after boot-up, htop, yakuake, and a chrome page with 1 tab opened to this question are all that I have manually opened. The most taxing program to the CPU is htop itself. I think that the problem must lie elsewhere; my temps are already up to ~65C for the CPU and ~69C for the GPU, with nearly 0% CPU usage.

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• Read Oracle Certification Program's December 2012 E-Magazine now!

  - by Harold Green

  Hello Everyone, The big news in this edition of our Oracle Certification E-Magazine is related to a change in the way that exam results are provided at the end of the test (using our CertView tool). This significant process change for the Oracle program sets the stage for tighter integration of candidate information and exam/certifcation results. Additionally, it helps give every certification holder access to important tools available in CertView. The new process was implemented in November and so far it is going very well. Much of the success of this new initiative is due to you (following the new process)! We are continuing to work to expand the functionality of CertView to better help you use your certification as a tool to help improve your career. Also in this issue of the E-Magazine, we are announcing several new offerings. We have a new SQL Tuning certification as well as a new Exam Preparation Seminar. We have continued to release new Exam Preparation Seminars and Exam Preparation Seminar Value Packages and we are receiving good feedback. We hope that you will consider employing one of these seminars to help you prepare for your next certification exam. They are now even available on iPad! READ THE DECEMBER 2012 EDITION HERE Thank you and good luck! Paul Sorensen Sr. Director, Global Certification Programs

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• Batch file to ZIP only files in directory or sub directory

  - by PaulJavier

  I wanted to know if possible how to create a command line to do the following - if a directory exist ZIP only the contents into a ZIP file. If a directory has sub-directories ZIP only the contents into another ZIP file. Example: C:\Directory\sample.txt ZIP only sample.txt C:\Directory\Directory1\sample1.txt ZIP only sample1.txt C:\Directory\Directory1\Directory2\sample2.txt ZIP only sample2.txt So it would have created 3 zip files in C:\Directory and sub-directories. I will not know the name of the sub-directories so can I also assign some sort of variable that says if there are directories or sub-directories in C:\Directory then start above ZIP(s)? Thank you, Paul

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• Completely unable to install python2.7-dev

  - by gath

  Am totally stuck! Am unable completely to install python2.7-dev on my Ubuntu13.04. I have tried all the tricks mentioned on this site (askubuntu.com) and many other sites on the web but still nothing! Am running Ubuntu 13.04 64bit on a virtualbox, but every time I run sudo apt-get install python2.7-dev, I get the following error; python2.7-dev : Depends: python2.7 (= 2.7.3-0ubuntu3.5) but 2.7.4-2ubuntu3 is to be installed Depends: libpython2.7 (= 2.7.3-0ubuntu3.5) but 2.7.4-2ubuntu3 is to be installed Depends: libexpat1-dev but it is not going to be installed Depends: libssl-dev but it is not going to be installed E: Unable to correct problems, you have held broken packages. I've tried to do apt-get update, but still nothing! I've even tried installing Python2.7 from sources, but still nothing doing! Is there a single package with all the dependencies I can download, that can just install everything (Python2.7-dev) or is there another trick I can use to get the Python-dev headers installed on my machine. Hint: I've noticed when I run sudo apt-get update , somewhere along the updates I've seen some errors; ... Get:1 http://us.archive.ubuntu.com precise-updates Release.gpg [198 B] Ign http://us.archive.ubuntu.com raring Release Ign http://us.archive.ubuntu.com raring-updates Release Ign http://us.archive.ubuntu.com raring-backports Release Ign http://us.archive.ubuntu.com raring-security Release Get:2 http://us.archive.ubuntu.com precise-updates Release [98.7 kB] Err http://extras.ubuntu.com raring/main Sources 404 Not Found Err http://extras.ubuntu.com raring/main amd64 Packages 404 Not Found Err http://extras.ubuntu.com raring/main i386 Packages 404 Not Found Ign http://extras.ubuntu.com raring/main Translation-en_US Ign http://extras.ubuntu.com raring/main Translation-en ... On my precise-updates.list file is a single entry; deb http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted I don't know if that might help Help! Paul

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• configure vpn so that it is not the preferred route

  - by pstanton

  Hi all, I recently re-installed XP on my PC. I had a vpn set up on the old system and remember being advised to change one setting so that it wasn't the preferred route for all network traffic. This was ideal as only connections to the target network would be made through the vpn and all normal traffic would go through the regular path unmolested. i remember thinking "why isn't this the default setting!?". now i've formatted my drive and lost the config for that vpn (besides host, username, passwd). does anyone know of the setting i'm referring to? thanks, paul.

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• OUCH! Laptop running SUPER HOT after 12.10 upgrade!

  - by dinkelk

  I was running 12.04 for 6 months, my laptop ran almost silently and cool enough to hold on my lap. I updated to 12.10 and now my computer gets too hot to hold on my lap and the fan is constantly running on full blast. This is the output of sensors: acpitz-virtual-0 Adapter: Virtual device temp1: +84.0°C (crit = +99.0°C) coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +84.0°C (high = +86.0°C, crit = +100.0°C) Core 0: +74.0°C (high = +86.0°C, crit = +100.0°C) Core 1: +72.0°C (high = +86.0°C, crit = +100.0°C) Core 2: +75.0°C (high = +86.0°C, crit = +100.0°C) Core 3: +84.0°C (high = +86.0°C, crit = +100.0°C) radeon-pci-0100 Adapter: PCI adapter temp1: +76.0°C I have an HP Pavilion dv6, i7, amd radeon graphics. Please let me know if you need additional information. What could be different between the two Ubuntu editions that caused such a drastic change? Edit 1: Per @Paul's suggestion, I ran htop to try to narrow down the problem. Here is the result! (left side of terminal) (right side of terminal) This is about 10 minutes after boot-up, htop, yakuake, and a chrome page with 1 tab opened to this question are all that I have manually opened. The most taxing program to the CPU is htop itself. I think that the problem must lie elsewhere; my temps are already up to ~65C for the CPU and ~69C for the GPU, with nearly 0% CPU usage.

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• Nginx Tornado Combination Causing 502 Bad Gateway Errors

  - by PlaidFan

  We are facing a problem with inconsistent 502 errors and tracking down the reasons has been a very frustrating exercise. We can reproduce the problem by sending several simultaneous requests quickly. The problem is that several is only in the range of 10 to 20 within a 5 seconds (not a typo). So clearly this type of load should be handled easily. We really like the Nginx + Tornado approach but are considering going to a more traditional (e.g. threading) approach because this problem has been very difficult to solve. I was wondering if you a) know how to fix this issue and b) how we can tracked down the culprit(s). The log files simply identify there being a connection refused. We have the same problem as this post: How do I debug a HTTP 502 error? But there is no answer provided on how to solve the problem so I'm hoping you can help because this may be a common issue with this type of setup. Thanks in advance, Paul

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• How to use pipes for nonblocking IPC (UART emulation)

  - by codebauer

  I would like to write some test/emulation code that emulates a serial port connection. The real code looks like this: DUT <- UART - testtool.exe My plan is to use create a test application (CodeUnderTest.out) on linux that forks to launch testool.out with two (read & write) named pipes as arguments. But I cannot figure out how to make all the pipe IO non-blocking! The setup would look like this:. CodeUnderTest.out <- named pipes - testTool.out (lauched from CodeUnderTest.out) I have tried opening the pipes as following: open(wpipe,O_WRONLY|O_NONBLOCK); open(rpipe,O_RDONLY|O_NONBLOCK); But the write blocks until the reader opens the wpipe. Next I tried the following: open(wpipe,O_RDWR|O_NONBLOCK); open(rpipe,O_RDONLY|O_NONBLOCK); But then the reader of the first message never gets any data (doesn't block though) I also tried adding open and close calls around each message, but that didn't work either... Here is some test code: #include <stdio.h> #include <sys/types.h> #include <unistd.h> #include <fcntl.h> pid_t pid; char* rpipe, *wpipe,*x; FILE *rh,*wh; int rfd,wfd; void openrpipe( void ) { rfd = open(rpipe,O_RDONLY|O_NONBLOCK); rh = fdopen(rfd,"rb"); printf("%sopeningr %x\n",x,rh); } void openwpipe( void ) { //Fails when reader not already opened //wfd = open(wpipe,O_WRONLY|O_NONBLOCK); wfd = open(wpipe,O_RDWR|O_NONBLOCK); wh = fdopen(wfd,"wb"); printf("%sopeningw %x\n",x,wh); } void closerpipe( void ) { int i; i = fclose(rh); printf("%sclosingr %d\n",x,i); } void closewpipe( void ) { int i; i = fclose(wh); printf("%sclosingw %d\n",x,i); } void readpipe( char* expect, int len) { char buf[1024]; int i=0; printf("%sreading\n",x); while(i==0) { //printf("."); i = fread(buf,1,len,rh); } printf("%sread (%d) %s\n",x,i,buf); } void writepipe( char* data, int len) { int i,j; printf("%swriting\n",x); i = fwrite(data,1,len,rh); j = fflush(rh); //No help! printf("%sflush %d\n",x,j); printf("%swrite (%d) %s\n",x,i,data); } int main(int argc, char **argv) { rpipe = "readfifo"; wpipe = "writefifo"; x = ""; pid = fork(); if( pid == 0) { wpipe = "readfifo"; rpipe = "writefifo"; x = " "; openrpipe(); openwpipe(); writepipe("paul",4); readpipe("was",3); writepipe("here",4); closerpipe(); closewpipe(); exit(0); } openrpipe(); openwpipe(); readpipe("paul",4); writepipe("was",3); readpipe("here",4); closerpipe(); closewpipe(); return( -1 ); } BTW: To use the testocd above you need to pipes in the cwd: mkfifo ./readfifo mkfifo ./writefifo

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• SOA Community Newsletter June 2013

  - by JuergenKress

  Dear SOA partner community member Thanks for showing us your interest to rerun the Fusion Middleware Summer Camps! After knowing your suggestions we are happy to announce the 3rd edition of our advanced Fusion Middleware training. The camps will take place from August 26th - 30th 2013 in Lisbon Portugal. Topics will include Adaptive Case Management (ACM) as part of BPM Suite, b2b, Advanced SOA and SOA Governance. Please make sure you plan and book your seat in advance - (Booking is on the basis of first come first seat!). Thanks for all your efforts to become certified and Specialized. For all the experts who achieved the SOA Suite 11g Essentials or BPM Suite 11g Certified Implementation Specialist, you can download a logo for your blog or business card at the Competence Center. For all the companies who achieved a SOA or BPM specialization you can request a nice Plaques for your office. As part of our Industrial SOA article services we published “Canonizing a Language for Architecture” in the Service Technology Magazine and on Oracle Technology Network. If you write books or a blog - make sure you share it with us! Cloud Computing is the hottest topic in IT, specially as an architect you should be aware of the concepts and technology, therefore I highly recommend you Thomas Erl’s latest book named “Cloud Computing”. In the BPM space, Adaptive Case Management (ACM) is the hottest topic, with BPM PS6 the backend ACM functionality and an ACM sample application are available. You can even combine this hype with Customer Experience. The BPM section in this newsletter reflects the high importance of the topic and includes BPM PS6 video showing process lifecycle,BPM Resource Kit, Functional Testing, Introduction to Web Forms, Customized Workspace Application and Instance Patching Demo. B2B also become more and more popular in the Oracle SOA Suite. If you could not attend the training organized in the month May, we offer you an additional B2B training as a part of the Summer Camps or you can download the B2B training material from our SOA Community Workspace (SOA Community membership required). Thanks to all for sharing the valuable SOA content with our community! Special thanks to ec4u for the new reference of SOA Suite and AIA Foundation Pack at a Swiss insurance company. It is time to submit a SOA and BPM  reference request today! In this edition of the newsletter you will see Guido and Ronald's second part of OSB article series and Kathiravan Udayakumar's published an exclusive article on SOA Suite best practice. If you want to submit your content for the next edition of the Newsletter then please feel free to submit it to myself. The A-Team is an excellent contributor to the best practice - make sure you visit the new A-Team page and read their articles such as Getting to know Maven. Also on the SOA side, we have published many new articles from the community Oracle SOA Suite for the Busy IT Professional by Frank Munz, SOA Suite Knowledge - Polyglot Service Implementation with Groovy by Alexander Suchier, QA82 Analyzer - Automated Quality Assurance for Oracle SOA Suite Projects, Verifying the Target by Anthony Reynolds and a new book called Oracle SOA Governance 11g Implementation book by Luis Augusto Weir. Two new SOA on-demand training courses NEW - Oracle Business Rules Self-Study Course & Introduction Human Workflow online course are available now! Make use of the Summer Time and get trained - hope to see you in Lisbon for the Summer Camps! Jürgen Kress Oracle SOA & BPM Partner Adoption EMEA To read the newsletter please visit http://tinyurl.com/soanewsJune2013 (OPN Account required) To become a member of the SOA Partner Community please register at http://www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Technorati Tags: SOA Community newsletter,SOA Community,Oracle,OPN,Jürgen Kress,SOA,BPM

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• What I've Gained from being a Presenter at Tech Events

  - by MOSSLover

  Originally posted on: http://geekswithblogs.net/MOSSLover/archive/2014/06/12/what-ive-gained-from-being-a-presenter-at-tech-events.aspxI know I fail at blogging lately.  As I've said before life happens and it gets in the way of best laid out plans.  I thought about creating some type of watch with some app that basically dictates using dragon naturally speaking to Wordpress, but alas no time and the write processing capabilities just don't exist yet.So to get to my point Alison Gianotto created this blog post: http://www.snipe.net/2014/06/why-you-should-stop-stalling-and-start-presenting/.  I like the message she has stated in this post and I want to share something personal.It was around 2007 that I was seriously looking into leaving the technology field altogether and going back to school.  I was calling places like Washington University in Saint Louis and University of Missouri Kansas City asking them how I could go about getting into some type of post graduate medical school program.  My entire high school career was based on Medical Explorers and somehow becoming a doctor.  I did not want to take my hobby and continue using it as a career mechanism.  I was unhappy, but I didn't realize why I was unhappy at the time.  It was really a lot of bad things involving the lack of self confidence and self esteem.  Overall I was not in a good place and it took me until 2011 to realize that I still was not in a good place in life.So in about April 2007 or so I started this blog that you guys have been reading or occasionally read.  I kind of started passively stalking people by reading their blogs in the SharePoint and .Net communities.  I also started listening to .Net Rocks & watching videos on their corresponding training for SharePoint, WCF, WF, and a bunch of other technologies.  I wanted more knowledge, so someone suggested I go to a user group.  I've told this story before about how I met Jeff Julian & John Alexander, so that point I will spare you the details.  You know how I got to my first user group presentation and how I started getting involved with events, so I'll also spare those details.The point I want to touch on is that I went out I started speaking and that path I took helped me gain the self confidence and self respect I needed.  When I first moved to NYC I couldn't even ride a subway by myself or walk alone without getting lost.  Now I feel like I can go out and solve any problem someone throws at me.  So you see what Alison states in her blog post is true and I am a great example to that point.  I stood in front of 800 or so people at SharePoint Conference in 2011 and spoke about a topic.  In 2007 I would have hidden or stuttered the entire time.  I have now spoken at over 70 events and user groups.  I am a top 25 influencer in my technology.  I was a most valued professional for years in a row in Microsoft SharePoint.  People are constantly trying to gain my time, so that they can pick my brain for solutions and other life problems.  I went from maybe five or six friends to over hundreds of friends in various cities across the globe.  I'm not saying it's an instant fame and it doesn't take a ton of work, but I have never looked back once at my life and regretted the choice I made in 2007.  It has lead me to a lot of other things in my life, including more positivity and happiness.  If anyone ever wants to contact me and pick my brain on a presentation go ahead.  If you want me to help you find the best meetup that suits you for that presentation I can try to help too (I might be a little more helpful in the Microsoft or iOS arenas though).  The best thing I can state is don't be scared just do it.  If you need an audience I can try to pencil it in my schedule.  I can't promise anything, but if you are in NYC I can at least try.

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• Using Teleriks new LINQ implementation to connect to MySQL

  Last week Telerik released a new LINQ implementation that is simple to use and produces domain models very fast. Built on top of the enterprise grade OpenAccess ORM, you can connect to any database that OpenAccess can connect to such as: SQL Server, MySQL, Oracle, SQL Azure, VistaDB, etc. Today I will show you how to build a domain model using MySQL as your back end. To get started, you have to download MySQL 5.x and the MySQL Workbench and also, as my colleague Alexander Filipov at Telerik reminded me, make sure you install the MySQL .NET Connector, which is available here.  I like to use Northwind, ok it gives me the warm and fuzzies, so I ran a script to produce Northwind on my MySQL server. There are many ways you can get Northwind on your MySQL database, here is a helpful blog to get your started. I also manipulated the first record to indicate that I am in MySQL and gave a look via the MySQL Workbench. Ok, time to build our model! Start up the Domain Model wizard by right clicking on the project in Visual Studio (I have a Web project) and select Add|New Item and choose Telerik OpenAccess Domain Model from the new item list. When the wizard comes up, choose MySQL as your back end and enter in the name of your saved MySQL connection. If you dont have a saved MySQL connection set up in Visual Studio, click on New Connection and enter in the proper connection information. *Note, this is where you need to have the MySQL .NET connector installed. After you set your connection to the MySQL database server, you have to choose which tables to include in your model. Just for fun, I will choose all of them. Give your model a name, like NorthwindEntities and click finish. That is it. Now lets consume the model with ASP .net. I created a simple page that also has a GridView on it. On my page load I wrote this code, by now it should look very familiar, a simple LINQ query filtering customers by country (Germany) and binding the results to the grid.  1: protected void Page_Load(object sender, EventArgs e) 2: { 3: if (!IsPostBack) 4: { 5: //a reference to the data context 6: NorthwindEntities dat = new NorthwindEntities(); 7: //LINQ Statement 8: var result = from c in dat.Customers 9: where c.Country == "Germany" 10: select c; 11: //Databinding to the Gridview 12: GridView1.DataSource = result; 13: GridView1.DataBind(); 14: } 15: } .csharpcode, .csharpcode pre{ font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/}.csharpcode pre { margin: 0em; }.csharpcode .rem { color: #008000; }.csharpcode .kwrd { color: #0000ff; }.csharpcode .str { color: #006080; }.csharpcode .op { color: #0000c0; }.csharpcode .preproc { color: #cc6633; }.csharpcode .asp { background-color: #ffff00; }.csharpcode .html { color: #800000; }.csharpcode .attr { color: #ff0000; }.csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em;}.csharpcode .lnum { color: #606060; } F5 produces the following. Tomorrow Ill show how to take the same model and create an Astoria/OData data feed. Technorati Tags: MySQL Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• fabric deploy problem

  - by alexarsh

  Hi, I'm trying to deploy a django app with fabric and get the following error: Alexs-MacBook:fabric alex$ fab config:instance=peergw deploy -H <ip> - u <username> -p <password> [192.168.2.93] run: cat /etc/issue Traceback (most recent call last): File "build/bdist.macosx-10.6-universal/egg/fabric/main.py", line 419, in main File "/Users/alex/Rabota/server/mx30/scripts/fabric/fab/ commands.py", line 37, in deploy checkup() File "/Users/alex/Rabota/server/mx30/scripts/fabric/fab/ commands.py", line 140, in checkup if not 'Ubuntu' in run('cat /etc/issue'): File "build/bdist.macosx-10.6-universal/egg/fabric/network.py", line 382, in host_prompting_wrapper File "build/bdist.macosx-10.6-universal/egg/fabric/operations.py", line 414, in run File "build/bdist.macosx-10.6-universal/egg/fabric/network.py", line 65, in __getitem__ File "build/bdist.macosx-10.6-universal/egg/fabric/network.py", line 140, in connect File "build/bdist.macosx-10.6-universal/egg/paramiko/client.py", line 149, in load_system_host_keys File "build/bdist.macosx-10.6-universal/egg/paramiko/hostkeys.py", line 154, in load File "build/bdist.macosx-10.6-universal/egg/paramiko/hostkeys.py", line 66, in from_line File "build/bdist.macosx-10.6-universal/egg/paramiko/rsakey.py", line 61, in __init__ paramiko.SSHException: Invalid key Alexs-MacBook:fabric alex$ I can't connect to the server via ssh. What can be my problem? Regards, Arshavski Alexander.

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• Lua Operator Overloading

  - by Pessimist

  I've found some places on the web saying that operators in Lua are overloadable but I can't seem to find any example. Can someone provide an example of, say, overloading the + operator to work like the .. operator works for string concatenation? EDIT 1: to Alexander Gladysh and RBerteig: If operator overloading only works when both operands are the same type and changing this behavior wouldn't be easy, then how come the following code works? (I don't mean any offense, I just started learning this language): printf = function(fmt, ...) io.write(string.format(fmt, ...)) end Set = {} Set.mt = {} -- metatable for sets function Set.new (t) local set = {} setmetatable(set, Set.mt) for _, l in ipairs(t) do set[l] = true end return set end function Set.union (a,b) -- THIS IS THE PART THAT MANAGES OPERATOR OVERLOADING WITH OPERANDS OF DIFFERENT TYPES -- if user built new set using: new_set = some_set + some_number if type(a) == "table" and type(b) == "number" then print("building set...") local mixedset = Set.new{} for k in pairs(a) do mixedset[k] = true end mixedset[b] = true return mixedset -- elseif user built new set using: new_set = some_number + some_set elseif type(b) == "table" and type(a) == "number" then print("building set...") local mixedset = Set.new{} for k in pairs(b) do mixedset[k] = true end mixedset[a] = true return mixedset end if getmetatable(a) ~= Set.mt or getmetatable(b) ~= Set.mt then error("attempt to 'add' a set with a non-set value that is also not a number", 2) end local res = Set.new{} for k in pairs(a) do res[k] = true end for k in pairs(b) do res[k] = true end return res end function Set.tostring (set) local s = "{" local sep = "" for e in pairs(set) do s = s .. sep .. e sep = ", " end return s .. "}" end function Set.print (s) print(Set.tostring(s)) end s1 = Set.new{10, 20, 30, 50} s2 = Set.new{30, 1} Set.mt.__add = Set.union -- now try to make a new set by unioning a set plus a number: s3 = s1 + 8 Set.print(s3) --> {1, 10, 20, 30, 50}

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• php (rar) i want to rar a folder using rar on Ubuntu (linux) by php (on dedi server) noob

  - by Steve

  hey guyz i want rar (not tar) my folder on my server by using php RAR RAR 3.93 Copyright (c) 1993-2010 Alexander Roshal 15 Mar 2010 Registered to my real name OS Ubuntu Release (Karmic) kernel linux 2.6.32.2-xxxx-grs-ipv4-32 Gnome 2.28.1 latest php an lighthttpd i have tried these things http://php.net/manual/en/function.escapeshellarg.php // may be wrong code http://php.net/manual/en/function.exec.php http://php.net/manual/en/function.shell-exec.php my command (working in ssh and nautilus script) rar a -m0 /where/file/will/saved/file_name.rar /location/ti/data/dir/datafolder php code $log=Shell_exec("rar a -m0 /where/file/will/saved/file_name.rar /location/ti/data/dir/datafolder"); echo $log; one method is left which i don't know how to use and its working on server that is by somefile_to_execute_command.sh i have to execute .sh file from php need to send some variables (command) and i tried this method can rar file with a script named RapidLeech but its rar from only its own files dir only :( but i want to do in different directories. Rapid Leech rar class http://paste2.org/p/791668 i m able run shell command with php (cp(copy),mv(move),ls(directory list),rm(remove aka delete)) but got failed to run rar i gives no output i also tried to given path rar and i used alot commands with php Shell_exec function and working like they work with ssh and i have tried almost 80 % method given on net and failed from last 3days i m over now plz help me i need php script file working plz reply if u have any info n code and experience about rar and this kinda :( problem i m 99% noob just used code mean search Google collect script make my own working thing (for personal use only) n now i m failed to rar folder and file :(( now plz provide me code plz don't talk in technical language because i m just reading my first php book (for dummies :D) mean noob and 0.1 plz help me as much u can thankx

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• Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'

  - by stakx

  First off, it may seem that I'm asking for subjective opinions, but that's not what I'm after. I'd love to hear some well-grounded arguments on this topic. In the hope of getting some insight into how a modern streams / serialization framework ought to be designed, I recently got myself a copy of the book Standard C++ IOStreams and Locales by Angelika Langer and Klaus Kreft. I figured that if IOStreams wasn't well-designed, it wouldn't have made it into the C++ standard library in the first place. After having read various parts of this book, I am starting to have doubts if IOStreams can compare to e.g. the STL from an overall architectural point-of-view. Read e.g. this interview with Alexander Stepanov (the STL's "inventor") to learn about some design decisions that went into the STL. What surprises me in particular: It seems to be unknown who was responsible for IOStreams' overall design (I'd love to read some background information about this — does anyone know good resources?); Once you delve beneath the immediate surface of IOStreams, e.g. if you want to extend IOStreams with your own classes, you get to an interface with fairly cryptic and confusing member function names, e.g. getloc/imbue, uflow/underflow, snextc/sbumpc/sgetc/sgetn, pbase/pptr/epptr (and there's probably even worse examples). This makes it so much harder to understand the overall design and how the single parts co-operate. Even the book I mentioned above doesn't help that much (IMHO). Thus my question: If you had to judge by today's software engineering standards (if there actually is any general agreement on these), would C++'s IOStreams still be considered well-designed? (I wouldn't want to improve my software design skills from something that's generally considered outdated.)

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• forms problem in django 1.1

  - by alexarsh

  I have the following form: class ModuleItemForm2(forms.ModelForm): class Meta: model = Module_item fields = ('title', 'media', 'thumb', 'desc', 'default', 'player_option') The model is: class Module_item(models.Model): title = models.CharField(max_length=100) layout = models.CharField(max_length=5, choices=LAYOUTS_CHOICE) media = models.CharField(help_text='Media url', max_length=500, blank=True, null=True) conserv = models.ForeignKey(Conserv, help_text= 'Redirect to Conserv', blank=True, null=True) conserve_section = models.CharField(max_length=100, help_text= 'Section within the redirected Conserv', blank=True, null=True) parent = models.ForeignKey('self', help_text='Upper menu.', blank=True, null=True) module = models.ForeignKey(Module, blank=True, null=True) thumb = models.FileField(upload_to='sms/module_items/thumbs', blank=True, null=True) desc = models.CharField(max_length=500, blank=True, null=True) auto_play = models.IntegerField(help_text='Auto start play (miliseconds)', blank=True, null=True) order = models.IntegerField(help_text='Display order', blank=True, null=True) depth = models.IntegerField(help_text='The layout depth', blank=True, null=True) flow_replace = models.IntegerField(blank=True, null=True) default = models.IntegerField(help_text='The selected sub item (Note: Starting from 0)', blank=True, null=True) player_options = models.CharField(max_length=1000, null=True, blank=True) In my view I build form: module_item_form2 = ModuleItemForm2() print module_item_form2 And I get the following error on the print line: 'NoneType' object has no attribute 'label' It works fine with django 1.0.2. I see the error only in django 1.1. Do you have an idea what am I doing wrong? Regards, Arshavski Alexander.

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• Sync Framework Peer Data Sharing Unable to Catch Conflicts, Source Provider Alwasy wins!

  - by Belliez

  Hi, I am using SQL Server 2008 and the WebSharingAppDemo-SqlProviderEndToEnd sample and this is almost perfect for my needs however I am unable to detect conflicts. By default ConflictResolutionPolicy is set to ApplicationDefined. I have tried setting the ResolutionPolicy to SourceWins, DestinationWins or ApplicationDefined and I always get the same results? The Destination Provider Proxy (Peer) always wins? Can someone please provide a sample of how I can detect a conflict and act upon it or point me in the right direction where I can start to look. I am not sure what to do and where I can create events for detecting collisions. Been staring at this too long now and going around in circles! Thanks in advanced. Paul

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• Algorithm for nice graph labels for time/date axis?

  - by Aaron

  Hello, I'm looking for a "nice numbers" algorithm for determining the labels on a date/time value axis. I'm familar with Paul Heckbert's Nice Numbers algorithm (http://tinyurl.com/5gmk2c). I have a plot that displays time/date on the X axis and the user can zoom in and look at a smaller time frame. I'm looking for an algorithm that picks nice dates to display on the ticks. For example: Looking at a day or so: 1/1 12:00, 1/1 4:00, 1/1 8:00... Looking at a week: 1/1, 1/2, 1/3... Looking at a month: 1/09, 2/09, 3/09... The nice label ticks don't need to correspond to the first visible point, but close to it. Is anybody familar with such an algorithm? Thanks

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• Testing C++ program with Testing classes over normally used classes

  - by paultop6

  Hi Guys, This will probably be a bot of a waffly question but ill try my best. I have a simple c++ program that i need to build testing for. I have 2 Classes i use besides the one i actually am using, these are called WebServer and BusinessLogicLayer. To test my own code i have made my own versions of these classes that feed dummy data to my class to test it functionality. I need to know a way of somehow, via a makefile for instance, how to tell the source code to use the test classes over the normally used classes. The test classes are in a different "tester" c++ file, and the tester c++ file also has its own header file. Regards Paul P.S. This is probably a badly worded question, but i dont know any better way to put my question.

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• Sorting an array in PHP based on different values

  - by Jimbo

  I have an array whose elements are name, reversed_name, first_initial and second_initial. A typical row is "Aaron Smith", "Smith, Aaron", "a", "s". Each row in the array has a first_initial or second_initial value of "a". I need to display the rows alphabetically but based on the "a" part, so that either the name or reversed_name will be displayed. An example output would be: Aaron Smith Abbot, Paul Adrian Jones Anita Thompson Atherton, Susan I really have no idea how to sort the array this way so any help will be much appreciated!

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• Do I really need cmake for build automation?

  - by PMiller

  I'm currently investigating cmake to allow automatic building on the Win32 platform. For all runtimes and libraries I'd like to build, Visual Studio (2008/2010) projects do allready exist. I've come across cmake, but I'm unsure if I really need it. As the documentation says, cmake generates VS projects and they then can be built e.g. using MSBuild. As the projects itself allready do exist (and build nicely via the IDE or MSBuild on the cmd line), what do I need and use cmake for? Just for directory/project folder traversal? Build failure reporting? Regards, Paul

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• Mantis - Integrate Wiki

  - by Adrian

  I am using Mantis (PHP and MysQL) as a bug tracking tool and I would like to extend it in order to document requirements and technical specifications. Ideally, I should be able to link a defect with a requirement. Is there a way to integrate a Wiki tool (preferably PHP and MySQL based) into Mantis? EDITED: Instructions how to integrate DocuWiki can be found in this article "Integrating DokuWiki with Mantis" Instructions how to integrate MediaWiki can be found here (Thanks Ian) Instructions how to integrate TWiki can be found here and here Suggested alternatives to Mantis: (open source bugtrackers with integrated Wiki) TikiWiki (Php) PhpWiki (Php) Trac (Python) (Thanks ax) Redmine (Ruby on Rails) (Thanks Paul)

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