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  • .NET Demon 1.0 Released

    - by theo.spears
    Today we're officially releasing version 1.0 of .NET Demon, the Visual Studio Extension Alex Davies and I have been working on for the last 6 months. There have been beta versions available for a while, but we have now released the first "official" version and made it available to purchase. If you haven't yet tried the tool, it's all about reducing the time between when you write a line of code and when you are able to try it out so you don't have to wait: Continuous compilation We use spare CPU cycles on your machine to compile your code in the background when you make changes, so assemblies are up to date whenever you want to run them. Some clever logic means we only recompile code which may have been affected by your changes. Continuous save .NET Demon can perform background saving, so you don't lose any work in case of crashes or power failures, and are less likely to forget to commit changed files. Continuous testing (Experimental) The testing tool in .NET Demon watches which code you change in your solution, and automatically reruns tests which are impacted, so you learn about any breaking changes as quickly as possible. It also gives you inline test coverage information inside Visual Studio. Continuous testing is still experimental - it will work fine in many cases, but we know it's not yet perfect. Releasing version 1.0 doesn't mean we're pausing development or pushing out improvements. We will still be regularly providing new versions with improved functionality and fixes for any bugs people come across. Visit the .NET Demon product page to download

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  • Bypass spam check for Auth users in postfix

    - by magiza83
    I would like to know if there is any option to "FILTER" auth users in postfix. Let me explain me better, I have the amavis and dspam services between postfix(25) and postfix(10026) but I would like to avoid this check if the users are authenticated. postfix(25)->policyd(10031)->amavis(10024)->postfix(10025)->dspam(dspam.sock)->postfix(10026)--->cyrus | /|\ |________auth users______________________________________________________________| my conf is: main.cf ... smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_sasl_path = smtpd smtpd_recipient_restrictions = permit_sasl_authenticated, reject_unauth_destination, check_policy_service inet:127.0.0.1:10040, reject_invalid_hostname, reject_rbl_client multi.uribl.com, reject_rbl_client dsn.rfc-ignorant.org, reject_rbl_client dul.dnsbl.sorbs.net, reject_rbl_client list.dsbl.org, reject_rbl_client sbl-xbl.spamhaus.org, reject_rbl_client bl.spamcop.net, reject_rbl_client dnsbl.sorbs.net, reject_rbl_client cbl.abuseat.org, reject_rbl_client ix.dnsbl.manitu.net, reject_rbl_client combined.rbl.msrbl.net, reject_rbl_client rabl.nuclearelephant.com, check_policy_service inet:127.0.0.1:10031, permit_mynetworks, reject ... I would like something like "FILTER smtp:localhost:10026" in case they are authenticated, because in my actual configuration i'm only avoiding policyd, but not amavis and dspam. Thanks.

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  • JSP Include: one large bean or bean for each include

    - by shylynx
    I want to refactor a webapp that consists of very distorted JSPs and servlets. Because we can't switch to a web framework easily we have to keep JSPs and Servlets, and now we are in doubt how to include pages into another and how to setup the use:bean-directives effectively. At the first step we want to decouple the code for the core-actions and the bean-creation into servlets. The servlets should forward to their corresponding pages, which should use the bean. The problem here is, that each jsp consists of different sub- and sub-sub-jsp that are included into another. Here is a shortend extract (because reality is more complex): head header top navigation actionspanel main header actionspanel foot footer Moreover each jsp (also the header and footer) use dynamic data. For example title and actionspanel can change on each page-reload or do have links and labels that depend on the processing by the preceding servlet. I know that jsp-include-directives should only be used for static content und should be avoided for dynamic content. But here we have very large pages, that consist of many parts. Now the core questions: Should I use one big bean for each page, so that each bean holds also data for header and footer beside its core data, so that each subsequent included jsp uses the same bean-directive? For example: DirectoryJSP <- DirectoryBean CompareJSP <- CompareBean Or should I use one bean for each jsp, so that each bean only holds the data for one jsp and its own purpose. For example: DirectoryJSP <- DirectoryBean HeaderJSP <- HeaderBean FooterJSP <- FooterBean CompareJSP <- CompareBean HeaderJSP <- HeaderBean FooterJSP <- FooterBean In the second case: should the subsequent beans be a member of the corresponding parent bean, so that only the parent bean is attached as attribute to the request? Or should each bean attached to the request?

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  • Final agenda - Oracle Exadata & Manageability Partner Community Forum at OpenWorld

    - by Javier Puerta
    Just a few days for Oracle OpenWorld and our Exadata & Manageability Partner Community Forum for EMEA partners. The event will take place on the afternoon of Monday, October 1st, 2012 during the Oracle OpenWorld week. For all partners that have confirmed their attendance to the event, find below the final detailed agenda. I look forward to meeting again in San Francisco with all of you who can attend the event and hope that you will find the sessions useful for your business.   FINAL AGENDAOracle Exadata & ManageabilityEMEA Partner Community Forum at Oracle OpenWorld 2012 in San Francisco, USAMonday, October 1st, 20112 Detailed agenda Time Session Speaker 15:30 Reception of participants - Networking coffe served 16:00 Welcome Hans-Peter Kipfer, VP Engineered Systems, Oracle EMEA 16:10 Next challenges in building and managing clouds Javier Cabrerizo, VP, Global Business Development for Exadata, Oracle Corp. 16:30 Partner experience 1.- IT modernization, simplification and cost reduction: The case of a customer in Transportation & Logistics with custom applications and SAP. The Technological Renewal Model built by aligning the innovation of Oracle's Engineered Systems and Capgemini's service delivery excellence has resulted in significant cost savings for the client. Francisco Bermúdez, Country Leader Infrastructure Services, Capgemini, Spain 16:55 Partner experience 2.- The Nvision cloud project NCloud is an innovative design that combines advanced technical solutions, virtualization, and dynamic management of IT resources, providing a complete "as-a-Service" offering for Infrastructure, Database, Middleware, and Applications. Dmitry Krasilov, Head of Oracle Competence Center, Nvision Group, Russia 17:20 Partner experience 3.- From Exadata Ready to Exadata Optimized: An ISV Experience The experience of WeDo Technologies in the process and benefits that started as an Exadata Ready certification and ended up as an Exadata Optimized. Miguel Alves,  Product Business Solutions Manager, Wedo Technologies, Portugal 17:45 Next steps in engaging with Oracle Cengiz Yilmaz, Director Partner Strategy, Oracle EMEA Engineered SystemsPatrick Rood, Manageability Partner Business, Oracle EMEA 18:00 Wrap-up & Networking Time and Location:Monday, October 1st, 2012, 15:30 - 18:00 PST Grand Hyatt San Francisco, 345 Stockton Street, San Francisco (Conference Theater) (It is a 15 minute walk from OOW Moscone Center. See directions here)  

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  • Final agenda - Oracle Exadata & Manageability Partner Community Forum at OpenWorld

    - by Javier Puerta
    Just a few days for Oracle OpenWorld and our Exadata & Manageability Partner Community Forum for EMEA partners. The event will take place on the afternoon of Monday, October 1st, 2012 during the Oracle OpenWorld week. For all partners that have confirmed their attendance to the event, find below the final detailed agenda. I look forward to meeting again in San Francisco with all of you who can attend the event and hope that you will find the sessions useful for your business.   FINAL AGENDAOracle Exadata & ManageabilityEMEA Partner Community Forum at Oracle OpenWorld 2012 in San Francisco, USAMonday, October 1st, 20112 Detailed agenda Time Session Speaker 15:30 Reception of participants - Networking coffe served 16:00 Welcome Hans-Peter Kipfer, VP Engineered Systems, Oracle EMEA 16:10 Next challenges in building and managing clouds Javier Cabrerizo, VP, Global Business Development for Exadata, Oracle Corp. 16:30 Partner experience 1.- IT modernization, simplification and cost reduction: The case of a customer in Transportation & Logistics with custom applications and SAP. The Technological Renewal Model built by aligning the innovation of Oracle's Engineered Systems and Capgemini's service delivery excellence has resulted in significant cost savings for the client. Francisco Bermúdez, Country Leader Infrastructure Services, Capgemini, Spain 16:55 Partner experience 2.- The Nvision cloud project NCloud is an innovative design that combines advanced technical solutions, virtualization, and dynamic management of IT resources, providing a complete "as-a-Service" offering for Infrastructure, Database, Middleware, and Applications. Dmitry Krasilov, Head of Oracle Competence Center, Nvision Group, Russia 17:20 Partner experience 3.- From Exadata Ready to Exadata Optimized: An ISV Experience The experience of WeDo Technologies in the process and benefits that started as an Exadata Ready certification and ended up as an Exadata Optimized. Miguel Alves,  Product Business Solutions Manager, Wedo Technologies, Portugal 17:45 Next steps in engaging with Oracle Cengiz Yilmaz, Director Partner Strategy, Oracle EMEA Engineered SystemsPatrick Rood, Manageability Partner Business, Oracle EMEA 18:00 Wrap-up & Networking Time and Location:Monday, October 1st, 2012, 15:30 - 18:00 PST Grand Hyatt San Francisco, 345 Stockton Street, San Francisco (Conference Theater) (It is a 15 minute walk from OOW Moscone Center. See directions here)  

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  • Debugging the NetBeans Platform

    - by Geertjan
    Once you've set up the NetBeans Platform sources as your NetBeans Platform, you're able to debug the NetBeans Platform itself. That's an occasional question (certainly not a frequent question) on the mailing list and in NetBeans Platform courses: "Is it possible to debug the NetBeans Platform?" Well, here's how: Firstly, set up the NetBeans Platform sources as your NetBeans Platform. Now, open into NetBeans IDE the NetBeans module where you'd like to place a breakpoint. That in itself is the hardest part of this task. I.e., you know you want to debug the NetBeans Platform, but have no idea where to place your breakpoint. One way to figure that out, from 7.1 onwards, is to take a visual snapshot of the NetBeans Platform and then analyze that snapshot in NetBeans IDE. To do this, right-click a module that you've set as using the NetBeans Platform sources as your NetBeans Platform and then choose Debug. The application, i.e., the NetBeans Platform, including your custom module, starts up and you'll see this, i.e., NetBeans IDE in debug mode together with your NetBeans Platform application:Notice there's a new toolbar button (new in NetBeans IDE 7.1) that resembles an orange camera. Click that button and the IDE creates a visual snapshot of the running application, which in this case is the NetBeans Platform. When you click components in the visual snapshot, the Navigator and Properties window display information about the related GUI component: By clicking the above components, you can end up identifying the component you'd like to debug and even the module where it is found. Open that module. Set a breakpoint on the line of interest. Right-click the module again and choose Debug. A debug session starts and when the breakpoint is hit, the Debugger in the IDE will open and there you can step through the NetBeans Platform sources.

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  • How atomic is a SELECT INTO?

    - by leo.pasta
    Last week I got an interesting situation that prompted me to challenge a long standing assumption. I always thought that a SELECT INTO was an atomic statement, i.e. it would either complete successfully or the table would not be created. So I got very surprised when, after a “select into” query was chosen as a deadlock victim, the next execution (as the app would handle the deadlock and retry) would fail with: Msg 2714, Level 16, State 6, Line 1 There is already an object named '#test' in the database. The only hypothesis we could come up was that the “create table” part of the statement was committed independently from the actual “insert”. We can confirm that by capturing the “Transaction Log” event on Profiler (filtering by SPID0). The result is that when we run: SELECT * INTO #results FROM master.sys.objects we get the following output on Profiler: It is easy to see the two independent transactions. Although this behaviour was a surprise to me, it is very easy to workaround it if you feel the need (as we did in this case). You can either change it into independent “CREATE TABLE / INSERT SELECT” or you can enclose the SELECT INTO in an explicit transaction: SET XACT_ABORT ON BEGIN TRANSACTION SELECT * INTO #results FROM master.sys.objects COMMIT

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  • How to reset display settings in XFCE \ Ubuntu 12.04 and also flgrx drivers

    - by Agent24
    I recently upgraded to Ubuntu 12.04 and since I hate unity I installed the Xubuntu package and am using XFCE instead. Since I have a Radeon HD5770 I also installed the fglrx drivers. This all went fine (aside from the fact that the post-release update fglrx drivers have an error on installation and Ubuntu thinks they're not installed when they actually are. I configured my display settings (dual monitors, a 17" CRT on VGA and a 17" LCD on DVI) in the amdcccle program and everything was perfect. THEN, 2 days ago, I accidentally clicked on the "Display" settings in XFCE "settings" manager. After that, everything got screwed. Now, I normally run the CRT at 1152x854 and the LCD at 1280x1024 with the CRT as my primary monitor (with panel) and the LCD without panels etc just to display other windows when I want to drag them over there. The problem is now that if I set my CRT to 1152x864, it stays at 1280x1024 virtually and half the stuff falls off the screen. It also puts the LCD at 1280x1024 BUT then overlays the CRT's display ontop with different wallpaper in an L shape down the right-hand and bottom edges. In short, nothing makes sense and everything is FUBAR. I tried uninstalling fglrx through synaptic, and renaming xorg.conf and also the xfce XML file that has monitor settings but it still won't make sense. Unity on the other hand can currently set everything normally so the problem appears to be only with XFCE. In any case, I can't even get the fglrx drivers back, when I re-installed them, I can't run amdccle anymore as it says the driver isn't installed!! Can someone help me reset my XFCE settings so the monitors aren't screwed with some incorrect virtual desktop size and also so I can get fglrx drivers back and working? I really don't want to have to format and reinstall and go through all the hassle but it looks like I may have to :(

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  • Troubleshooting a high SQL Server Compilation/Batch-Ratio

    - by Sleepless
    I have a SQL Server (quad core x86, 4GB RAM) that constantly has almost the same values for "SQLServer:SQL Statistics: SQL compilations/sec" and "SQLServer:SQL Statistics: SQL batches/sec". This could be interpreted as a server running 100% ad hoc queries, each one of which has to be recompiled, but this is not the case here. The sys.dm_exec_query_stats DMV lists hundreds of query plans with an execution_count much larger than 1. Does anybody have any idea how to interpret / troubleshoot this phenomenon? BTW, the server's general performance counters (CPU,I/O,RAM) all show very modest utilization.

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  • Linux Logitech QuickCam Pro 9000 - microphone issues

    - by drahnr
    I got a Logitech Quickcam Pro 9000, the cam itself is working as it honors the UVC spec. This fancy WebCam has a integrated mic which worked some time before but now, it does no more. (Note: I use pulseaudio as it is a USB Mic and I am not really keen on the hassle of ALSA setup) Things I check already are if it gets detected at all: $ lsusb |grep Logi Bus 002 Device 002: ID 046d:0809 Logitech, Inc. Webcam Pro 9000 is muted in alsa-mixer - not the case, volume at 100 pavucontrol shows it too, but no input level bar! On top of that, if I open the gnome3 (fallback mode) audio panel(from the desktop panel), and disabel/reenable it in the hardware tab, it works "for some time"... Any hints? Any ideas? I am really out options for now, and the fact it worked like 6 months ago (perfectly) makes it no better.

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  • Hot fix published for TFS2010 upgrade issues

    - by jehan
    Microsoft has released a hot fix for the issues that are identified after the migration of TFS2005/TFS2008 servers to TFS2010. The issues are related to Merging and Labels: ·         Labels that were created before the upgrade are entirely empty.  Labels could be also have incorrect contents. ·         The merge wizard in Visual Studio does not display all valid merge targets for a given source path/branch. ·         During merging, merge candidates are shown for changes that were already merged prior to the upgrade. If you have not yet upgraded to TFS 2010, the hotfix is now available and is highly recommended to be applied before configuring your team project collections. Because this hotfix applies to the upgrade of version control content, it must be applied after TFS 2010 setup is complete, but before configuration is started.  At the end of the setup experience, the Success screen is shown indicating the completion of the installation.  Normally, users will continue on to the configuration part, but in this case, the user need to cancel the configuration part by un-checking the “Launch Team Foundation Server Configuration Tool” box, which will enable the Cancel button. After exiting setup, the hotfix executable can be run to update the upgrade steps. Once the hotfix is installed, the TFS Configuration Wizard will need to be re-launched from the Start Menu to complete the upgrade process.    The hotfix has been published on MSDN Code Gallery – you can find it here: http://code.msdn.microsoft.com/KB2135068   If you have upgraded to TFS2010 and facing any of the above issues, then checkout this KB for Resolution: http://support.microsoft.com/kb/2193796/en-us

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  • What is the best file system and allocation size for a USB flash drive?

    - by e-t172
    I'm considering using my 4 GB Kingston DataTraveler USB stick to store my Firefox and Thunderbird profiles for my laptop and desktop PCs. I want to maximize performance when using Firefox. The question is: what is the best file system and allocation size for the fastest Firefox profile operation on a USB flash drive? I'm using Windows 7 on both machines and I don't care about compatibility or the drive's lifetime. I just want to maximize performance. I could even use ext2 with the Ext2 IFS driver if that means it'll be faster. I'm assuming (perhaps I'm wrong) that putting a Firefox profile on a USB stick would be a "lots of small files" usage. In that case, it seems that NTFS would perform best, but I'm not sure. Besides I found nothing regarding the best allocation size to use. Considering that the default allocation size is designed for hard drives (which have different characteristics), I'm assuming that the default allocation size is not the best.

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  • nginx dynamic servername with regular expression doesn't work for co.uk

    - by redn0x
    I'm trying to setup a nginx server which dynamically loads content from a folder for a domain. To do this I'm using regular expressions in the server name like so: server_name ((?<subdomain>.+)\.)?(?<domain>.+)\.(?<tld>.*); This will create a 3 variables for nginx to use later on, for example when using the following url: test.foo.example.com this will evaluate to: $subdomain = test.foo $domain = example $tld = com The problem arises when the co.uk top-level domain is used. In this case when using the url test.foo.example.co.ukit will evaluate to: $subdomain = test.foo.cedira $domain = co $tld = uk How can I edit the regular expression so that it will also work for co.uk?

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  • New Outlook 2003 message, cursor sometimes goes to body, sometimes goes to "To:" field

    - by normalocity
    I've got an Outlook 2003 client that, when you click on "New message", about half the time the cursor defaults to being in the "body" of the message, and the other half of the time it defaults to the cursor being in the "To:" field. Anyone know why this might be happening? Thought it might be related to having Word set, or not set, to be the default email editor, but that had no effect. Also, this particular user reports that, on their previous machine, it always defaults to the "To:" field. I happen to still have that machine around, unmodified from when it was removed from the, and they are correct - it never goes to the body. I also read that some people had this issue and turned off the "Outlook today" feature to fix it, with mixed results. However, in this case the "Outlook today" feature isn't even turned on.

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  • wi-fi connection drops periodically for a few seconds

    - by sergiom
    I've read the similar question on wireless connections dropping, but no answer seems to apply to my case I have configured the wi-fi lan of my router to broadcast sid and use WPA-PSK. Every few minutes my wi-fi connection drops for a few seconds and then restores. When I use two computers and run a ping -n 50000 on both computers, I see that the connection drops at different times but with almost the same rate. the router is a zyxel, one pc runs windws vista and uses a USB wi-fi device from Belkin: F6D4050 the other one runs windows 7 is a Dell PC with an Intel(R) WiFi Link 5100 AGN there are no other wi-fi lans around

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  • Making Sure Which Partition to Choose with Linux Dual Boot?

    - by user128360
    In the Linux Mint 12 LXDE the partitions are listed as nsd 1, 2, 3, 4, though I have a Windows 8 CP installation on one of the two partitions on the single hard drive. The space usage is differing in both system calculations, though still relateable. Where the partition is at around 20 GB usage in Windows 8 it will be at around 24 GB in the Linux installation menu. I am just wondering is there a certain way to choose the right partition? Also in the drop down menu regarding the boot loader, there are multiple options, which one would be the one to be chosen in this case? What about the system-reserve partition of Windows 7 (the one I am trying to overwrite)? What is happening with that?

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  • Checking if an object is inside bounds of an isometric chunk

    - by gopgop
    How would I check if an object is inside the bounds of an isometric chunk? for example I have a player and I want to check if its inside the bounds of this isometric chunk. I draw the isometric chunk's tiles using OpenGL Quads. My first try was checking in a square pattern kind of thing: e = object; this = isometric chunk; if (e.getLocation().getX() < this.getLocation().getX()+World.CHUNK_WIDTH*World.TILE_WIDTH && e.getLocation().getX() > this.getLocation().getX()) { if (e.getLocation().getY() > this.getLocation().getY() && e.getLocation().getY() < this.getLocation().getY()+World.CHUNK_HEIGHT*World.TILE_HEIGHT) { return true; } } return false; What happens here is that it checks in a SQUARE around the chunk so not the real isometric bounds. Image example: (THE RED IS WHERE THE PROGRAM CHECKS THE BOUNDS) What I have now: Desired check: Ultimately I want to do the same for each tile in the chunk. EXTRA INFO: Till now what I had in my game is you could only move tile by tile but now I want them to move freely but I still need them to have a tile location so no matter where they are on the tile their tile location will be that certain tile. then when they are inside a different tile's bounding box then their tile location becomes the new tile. Same thing goes with chunks. the player does have an area but the area does not matter in this case. and as long as the X and Y are inside the bounding box then it should return true. they don't have to be completely on the tile.

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  • rkhunter: right way to handle warnings further?

    - by zuba
    I googled some and checked out two first links it found: http://www.skullbox.net/rkhunter.php http://www.techerator.com/2011/07/how-to-detect-rootkits-in-linux-with-rkhunter/ They don't mention what shall I do in case of such warnings: Warning: The command '/bin/which' has been replaced by a script: /bin/which: POSIX shell script text executable Warning: The command '/usr/sbin/adduser' has been replaced by a script: /usr/sbin/adduser: a /usr/bin/perl script text executable Warning: The command '/usr/bin/ldd' has been replaced by a script: /usr/bin/ldd: Bourne-Again shell script text executable Warning: The file properties have changed: File: /usr/bin/lynx Current hash: 95e81c36428c9d955e8915a7b551b1ffed2c3f28 Stored hash : a46af7e4154a96d926a0f32790181eabf02c60a4 Q1: Is there more extended HowTos which explain how to deal with different kind warnings? And the second question. Were my actions sufficient to resolve these warnings? a) To find the package which contains the suspicious file, e.g. it is debianutils for the file /bin/which ~ > dpkg -S /bin/which debianutils: /bin/which b) To check the debianutils package checksums: ~ > debsums debianutils /bin/run-parts OK /bin/tempfile OK /bin/which OK /sbin/installkernel OK /usr/bin/savelog OK /usr/sbin/add-shell OK /usr/sbin/remove-shell OK /usr/share/man/man1/which.1.gz OK /usr/share/man/man1/tempfile.1.gz OK /usr/share/man/man8/savelog.8.gz OK /usr/share/man/man8/add-shell.8.gz OK /usr/share/man/man8/remove-shell.8.gz OK /usr/share/man/man8/run-parts.8.gz OK /usr/share/man/man8/installkernel.8.gz OK /usr/share/man/fr/man1/which.1.gz OK /usr/share/man/fr/man1/tempfile.1.gz OK /usr/share/man/fr/man8/remove-shell.8.gz OK /usr/share/man/fr/man8/run-parts.8.gz OK /usr/share/man/fr/man8/savelog.8.gz OK /usr/share/man/fr/man8/add-shell.8.gz OK /usr/share/man/fr/man8/installkernel.8.gz OK /usr/share/doc/debianutils/copyright OK /usr/share/doc/debianutils/changelog.gz OK /usr/share/doc/debianutils/README.shells.gz OK /usr/share/debianutils/shells OK c) To relax about /bin/which as I see OK /bin/which OK d) To put the file /bin/which to /etc/rkhunter.conf as SCRIPTWHITELIST="/bin/which" e) For warnings as for the file /usr/bin/lynx I update checksum with rkhunter --propupd /usr/bin/lynx.cur Q2: Do I resolve such warnings right way?

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  • MongoDB ReplicaSet Elections when some nodes are down

    - by SecondThought
    I'm trying to get into ReplicaSet concept, and found something weird in mongoDB Documentation: For a node to be elected primary, it must receive a majority of votes. This is a majority of all votes in the set: if you have a 5-member set and 4 members are down, a majority of the set is still 3 members (floor(5/2)+1). Each member of the set receives a single vote and knows the total number of available votes. If no node can reach a majority, then no primary can be elected and no data can be written to that replica set (although reads to secondaries are still possible). (taken from here) So, If I got that right, in the 5-member case mentioned there the one node that's still standing WILL NOT be chosen as primary and the whole set will not get any writes? and that's even if this single node was the last primary before the elections? If it's true there can be many less-radical cases which will end up with a degenerated set. How can we avoid this?

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  • Is this kind of Design by Contract useless?

    - by Charlie Pigarelli
    I've just started informatics university and I'm attending a programming course about C(++). The programming professor prefers to teach very few things (in 3 month we have just reached the functions topic) and connect every topic with a type of programming design that somehow is similar to the Design by Contract design. Basically what he ask us to do is to write every exercise with comments Pre-conditions, Post-conditions and Invariants that should prove the correctness of each program we write. But this doesn't make any sense to me. I mean, ok: maybe writing down your thoughts prevent you from doing some mistakes, but if this is all an abstract thing, then if your program intuition is wrong you'll write your program wrong and then you'll also write pre and post conditions wrong probably auto convincing your self about its correctness. Most of the time, both me and other students have written programs that seemed ok and that had correct pre and post condition too. But at the moment of testing it was just completely wrong. I had some experience before this course of programming and I had written a lot of line of code before and I found myself comfortably with just writing a program and unit test it. It take less time to accomplish and is less "abstract" than just thinking about what every single piece of your program should do in every case (which is kinda like mentally testing it). Finally, all this pre and post conditions takes me like 80% of the total time of the exercise. It's harder to think about putting down this pre and post correct than to write the program itself. Since we are like the only course of the only university probably in the entire world that makes this things, could someone please tell me how should I manage this thing? Am I right thinking that this doesn't worth anything? Should I change university? (there are like double of the people attending that course and it seems that usually very few people passes the exam the first year). Should I convince myself it's method is right?

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  • Best choice for off-site backup: dd vs tar

    - by plok
    I have two 1TB single-partition hard disks configured as RAID1, of which I would like to make an off-site backup on a third disk, which I am still to buy. The idea is to store the backup at a relative's house, considerably far away from my place, in the hope that all the information will be safe in the case of a global thermonuclear apocalypse. Of course, this backup would be well encrypted. What I still have to decide is whether I am going to simply tar the entire partition or, instead, use dd to create an image of the disks. Is there any non-trivial difference between these two approaches that I could be overlooking? This off-site backup would be updated no more than two or three times a year, in the best of the cases, so performance should not be a factor to be pondered at all. What, and why, would you use if you were me? dd, tar, or a third option?

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  • Getting Internal Name of a Share Point List Fields

    - by Gino Abraham
    Over the last 2 weeks i was developing a tool to migrate Lotus notes data base to Share point. The mapping between Lotus notes schema and share point list schema was done manually in an xml file for out tool. To map the columns we wanted internal names of each field. There are quite a few ways to achieve this, have explained few below. If you want internal names for one or 2 columns you can do so by navigating to the list setting and clicking on the column name. Once you are in column's details, you can check the query string of the page. The last item in the query string would be field's internal. Replace all "%5f" with '_' will give you the field internal name. In my case there were more than 80 columns. I used power shell to get the list of columns with details. Open windows Powershell and paste the following script after modifying the url and list name. [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint") $site = new-object Microsoft.SharePoint.SPSite(http://yousitecolurl) $web = $site.OpenWeb() $list = $web.Lists["yourlist name"] $list.Fields | Format-Table Title, InternalName, TypeAsString I also found a tool in Codeplex.com which can generate a wrapper class for a list. The wrapper class will give you the guid and internal name for all fields in the list.  You can download the tool from http://imtech.codeplex.com/ Just enter the url in the text box and hit open. All the site content will be listed at the left hand side, expand the list, right click and select generate wrapper class.

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  • Ubuntu 13.10 AMD/ATI proprietary driver slow boot time, black screen after logging in and lengthy login/logout delays

    - by NahsiN
    Ubuntu 13.10 is causing me major headaches with my AMD/ATI HD 5770 GPU. Below is a list of problems I am currently encountering. 1) The boot time is extended by at least 25s after installing catalyst 13.4. Using open source radeon drivers, my boot time till the login screen is ~10s. With catalyst 13.4 installed, the boot time increases to ~35s. This was not the case in Ubuntu 13.04, 12.10 or 12.04. I have done the driver installation manually (instructions from wiki.cchtml.com) and using software center and there is no difference. I have not tried the catalyst 13.8 beta driver. 2) After manual installation of catalyst 13.4, I get stuck at a black screen after logging in. I have to purge fglrx to resolve the problem. I tried sudo amdconfig --initial -f but it didn't help. 3) The delay between logging in and unity being displayed is ~10-15s for BOTH open source and proprietary drivers. During the delay, it's just a black screen. Whenever I logout, there is again a ~10-15s delay with the login screen appearing stuck before lightdm allows me to enter my password again. This is ridiculous! Yes, I could stick with open source radeon drivers but I would like to install Steam and play my Valve collection on the machine. Is anybody else encountering similar issues?

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  • Using Exception Handler in an ADF Task Flow

    - by anmprs
    Problem Statement: Exception thrown in a task flow gets wrapped in an exception that gives an unintelligible error message to the user. Figure 1 Solution 1. Over-writing the error message with a user-friendly error message. Figure 2 Steps to code 1. Generating an exception: Write a method that throws an exception and drop it in the task flow.2. Adding an Exception Handler: Write a method (example below) to overwrite the Error in the bean or data control and drop the method in the task flow. Figure 3 This method is marked as the Exception Handler by Right-Click on method > Mark Activity> Exception Handler or by the button that is displayed in this screenshot Figure 4 The Final task flow should look like this. This will overwrite the exception with the error message in figure 2. Note: There is no need for a control flow between the two method calls (as shown below). Figure 5 Solution 2: Re-Routing the task flow to display an error page Figure 6 Steps to code 1. This is the same as step 1 of solution 1.2. Adding an Exception Handler: The Exception handler is not always a method; in this case it is implemented on a task flow return.  The task flow looks like this. Figure 7 In the figure below you will notice that the task flow return points to a control flow ‘error’ in the calling task flow. Figure 8 This control flow in turn goes to a view ‘error.jsff’ which contains the error message that one wishes to display.  This can be seen in the figure below. (‘withErrorHandling’ is a  call to the task flow in figure 7) Figure 9

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  • What kind of code would Kent Beck avoid unit testing?

    - by tieTYT
    I've been watching a few of the Is TDD Dead? talks on youtube, and one of the things that surprised me is Kent Beck seems to acknowledge that there are just some kinds of programs that aren't worth unit testing. For example, right here DHH says that Kent Beck is ... very happy to say "Well, TDD doesn't fit in this case, I'm just going to bail" It's frustrating to me that Kent Beck seems to acknowledge this, but nobody asks him to elaborate on it or give concrete examples. I'd like to know the situations where Kent Beck thinks TDD is a bad fit. Nobody can read his mind or speak for him, but I'm hoping he's been transparent enough through his books/tweets/whatever for someone to be able to answer. I'm not necessarily going to take what he says as gospel, but it would be useful to know that the times I've tried TDD and it just felt impossible/useless are situations that he would have bailed on it himself. Or, if it turned out he would have tested that code it'd suggest to me that I was approaching the process very wrong. I also think it would be enlightening to understand why he would bail on such projects. My opinion on why this is not a duplicate of "When is it appropriate to not unit test?" After skimming those answers I'm not satisfied. For example, look at UncleBob's answer. He doesn't even acknowledge that such a situation exists. I really think there's value in understanding Kent Beck's position, not just a general, "What's your opinion?" type of question. After all, he's the father of TDD.

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