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  • Should I create my own Assert class based on these reasons?

    - by Mike
    The main reason I don't like Debug.Assert is the fact that these assertions are disabled in Release. I know that there's a performance reason for that, but at least in my situation I believe the gains would outweigh the cost. (By the way, I'm guessing this is the situation in most cases). And yes, I know that you can use Trace.Assert instead. But even though that would work, I find the name Trace distracting, since I don't see this as tracing. The other reason to create my own class is laziness I guess, since I could write methods for the most usual cases like Assert.IsNotNull, Assert.Equals and so forth. The second part of my question has to do with using Environment.FailFast in this class. Would that be a good idea? I do like the ideas put forth in this document. That's pretty much where I got the idea from. One last point. Does creating a design like this imply having an untestable code path, as described in this answer by Eric Lippert on a different (but related) question?

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  • Prognostications for the Future of BI

    - by jacqueline.coolidge(at)oracle.com
    Dashboard Insight has published the viewpoints on the future of BI from several vendors' perspectives including ours at Business Intelligence Predictions for 2011 We offered: In 2011, businesses will demand more from BI.  With intense competitive and economic pressures, it's not enough to be interesting.  BI must be actionable and enable people to respond smarter and faster to the opportunities and challenges of the day.  Most companies rely on BI to help them understand what's going on in their business.  Many are ready to make the leap from "What's going on?" to "What are we going to do about it?" Seamless integration from reporting to what-if analysis and scenario modeling helps businesses decide the right course of action.  The integration of BI with SOA and BPEL will deliver the true payoff for BI by enabling companies to initiate business processes directly from their analysis, turning insight to action for more agile and competitive business.  And, I must admit, it's tough to argue with the trends identified by other vendors. Enabling true self-service and engaging a larger community of users Accelerating the adoption of BI on mobile devices Embracing more advanced analytics such as data/text mining and location intelligence Price/performance breakthroughs It's singing to the choir.  I look forward to hearing the voices of some customers who are pushing the envelope and will post those stories as I capture them.  

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  • Are you at Super Computing 10?

    - by Daniel Moth
    Like last year, I was going to attend SC this year, but other events are unfortunately keeping me here in Seattle next week. If you are going to be in New Orleans, have fun and be sure not to miss out on the following two opportunities. MPI Debugging UX Study Throughout the week, my team is conducting 90-minute studies on debugging MPI applications within Visual Studio. In exchange for your feedback (under NDA) you will receive a Microsoft Gratuity (and the knowledge that you are impacting the development of Visual Studio). If you are interested, sign up at the Microsoft Information Desk in the Exhibitor Hall during exhibit hours. Outside of exhibit hours, send email to [email protected]. If you took part in the GPGPU study, this is very similar except it is for MPI. Microsoft High Performance Computing Summit On Monday 15th, the Microsoft annual user group meeting takes place. Shuttle transportation and lunch is provided. For full details of this event and to register, please visit the official event page. Comments about this post welcome at the original blog.

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  • enabling a user (created with adduser command) for lightdm graphical login

    - by Basile Starynkevitch
    I just installed Ubuntu 12.04 AMD64 on a new (empty) hard disk (because the previous crashed) Since I am quite familiar with Debian, I created two accounts with the adduser command. Since I am also having an NFSv3 file system, I explictly gave user ids when creating them (for simplicity, I keep the same user id on the home server, running Debian; the user names contain digits; I'm not using LDAP), e.g. # grep bethy /etc/passwd bethy46:x:501:501:Bethy XXX,,,06123456:/home/bethy:/bin/bash # grep bethy /etc/group bethy64:x:501: # grep bethy /etc/shadow bethy46:$6$vQ-wmuchmorethings-2o/:15479:0:99999:7:: Of course /home/bethy exists The actual user name is slightly different, and I am not showing the real entries (for obvious privacy reasons) However, these users don't appear at graphical login prompt (lightdm). And they exist in the system, they have entries in /etc/passwd & /etc/shadow and I (partly) restored their /home I've got no specific user config under /etc/lightdm ; file /etc/lightdm/users.conf mentions # NOTE: If you have AccountsService installed on your system, then LightDM # will use this instead and these settings will be ignored but I have no idea of how to deal with AccountsService thru the command line As you probably guessed, I really dislike doing administrative tasks thru a graphical interface; I much prefer the command line What did I do wrong? How can a user entry not appear in lightdm graphical login? (I need to have my wife's user entry apparent for graphical login). I am not asking how to hide a user, but how to show it in lightdm graphical prompt work-around As I have been told in comments by Nirmik and by Enzotib, lightdm probably don't show any users of uid less than 1024. So I changed all the uid to be more than 8200 (including on the Debian NFS server) and this made all the users visible at the graphical prompt. It is a pain that such a threshold is not really documented.

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  • CUOA Workshop: “L’evoluzione dei modelli e dei sistemi di analisi e reporting direzionale”

    - by Paolo Leveghi
    Il 26 Giugno scorso presso l’Aula Magna della Fondazione CUOA si è tentuo il workshop “L’evoluzione dei modelli e dei sistemi di analisi e reporting direzionale”, promosso dal Club Finance CUOA con la collaborazione di Oracle .  Una recente analisi di Gartner ha evidenziato che Executives Finance ed IT hanno identificato Business Intelligence, Analytics e Performance Management come tema prioritario su cui concentrare gli investimenti “tecnologici” nel 2013 confermando, se mai qualcuno ne avesse avuto bisogno, la continua e crescente attenzione delle aziende alla propria capacità di definire, produrre e gestire informazioni funzionali all’identificazione di opportunità, alla valutazione di rischi ed impatti, alla simulazione degli effetti di operazioni ordinarie e straordinarie...in un solo concetto, informazioni funzionali alla guida dell’azienda. Questo dato è ancora più interessante se incrociato con il risultato di una survey condotta da CFO Magazine e KPMG International nella quale il 48% dei CFO intervistati ha dichiarato di ritenere i propri sistemi datati ed poco flessibili, quindi un limite, se non proprio un freno, alla loro volontà di essere agenti del cambiamento. A fronte di tutto questo, le aziende dimostrano un crescente interesse a capire cosa fare, oggi e domani, per migliorare la propria capacità di sfruttare una risorsa aziendale estremamente pregiata quale l’informazione. L’    Obiettivo del workshop è quindi stato quello di analizzare in quale scenario stanno operando oggi le aziende del Nord Est Italiano verificando, grazie alle testimonianze di ITAL TBS e del Gruppo Carraro,  lo “stato di salute” dei processi di Business Analytics, il livello di cultura aziendale ed il grado di adozione di soluzioni da parte dei CFO, del Management e più in generale dei decisori aziendali, i percorsi evolutivi e prospettici per migliorare su questi temi

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  • Big Data Appliance X4-2 Release Announcement

    - by Jean-Pierre Dijcks
    Today we are announcing the release of the 3rd generation Big Data Appliance. Read the Press Release here. Software Focus The focus for this 3rd generation of Big Data Appliance is: Comprehensive and Open - Big Data Appliance now includes all Cloudera Software, including Back-up and Disaster Recovery (BDR), Search, Impala, Navigator as well as the previously included components (like CDH, HBase and Cloudera Manager) and Oracle NoSQL Database (CE or EE). Lower TCO then DIY Hadoop Systems Simplified Operations while providing an open platform for the organization Comprehensive security including the new Audit Vault and Database Firewall software, Apache Sentry and Kerberos configured out-of-the-box Hardware Update A good place to start is to quickly review the hardware differences (no price changes!). On a per node basis the following is a comparison between old and new (X3-2) hardware: Big Data Appliance X3-2 Big Data Appliance X4-2 CPU 2 x 8-Core Intel® Xeon® E5-2660 (2.2 GHz) 2 x 8-Core Intel® Xeon® E5-2650 V2 (2.6 GHz) Memory 64GB 64GB Disk 12 x 3TB High Capacity SAS 12 x 4TB High Capacity SAS InfiniBand 40Gb/sec 40Gb/sec Ethernet 10Gb/sec 10Gb/sec For all the details on the environmentals and other useful information, review the data sheet for Big Data Appliance X4-2. The larger disks give BDA X4-2 33% more capacity over the previous generation while adding faster CPUs. Memory for BDA is expandable to 512 GB per node and can be done on a per-node basis, for example for NameNodes or for HBase region servers, or for NoSQL Database nodes. Software Details More details in terms of software and the current versions (note BDA follows a three monthly update cycle for Cloudera and other software): Big Data Appliance 2.2 Software Stack Big Data Appliance 2.3 Software Stack Linux Oracle Linux 5.8 with UEK 1 Oracle Linux 6.4 with UEK 2 JDK JDK 6 JDK 7 Cloudera CDH CDH 4.3 CDH 4.4 Cloudera Manager CM 4.6 CM 4.7 And like we said at the beginning it is important to understand that all other Cloudera components are now included in the price of Oracle Big Data Appliance. They are fully supported by Oracle and available for all BDA customers. For more information: Big Data Appliance Data Sheet Big Data Connectors Data Sheet Oracle NoSQL Database Data Sheet (CE | EE) Oracle Advanced Analytics Data Sheet

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  • Meet The MySQL Experts Podcast: MySQL Utilities

    - by Wei-Chen Chiu
    Managing a MySQL database server can become a full time job. In many occasions, one MySQL DBA needs to manage multiple, even tens of, MySQL servers, and tools that bundle a set of related tasks into a common utility can be a big time saver, allowing you spend more time improving performance and less time executing repeating tasks. While there are several such utility libraries to choose, it is often the case that you need to customize them to your needs. The MySQL Utilities library is the answer to that need. It is open source so you can modify and expand it as you see fit. In the latest episode of the "Meet the MySQL Experts" podcast series, Chuck Bell, Sr. MySQL Software Developer at Oracle, introduces a variety of recently released MySQL Utilities, and how DBAs can save significant time using the utilities. Listen to the podcast and learn the highlights in 10 minutes. If you want to gain further details, attend the on-demand webinar for a more complete introduction, including: Use cases for each utility How to group utilities for even more usability How to modify utilities for your needs How to develop and contribute new utilities  Enjoy!

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  • Webcast: Sun2Oracle: Upgrading from DSEE to the next generation Oracle Unified Directory

    - by Etienne Remillon
    Interested in upgrading from DSEE to OUD? Register to learn from one customer. Oracle Security Solutions Sun2Oracle: Upgrading from DSEE to the next generation Oracle Unified Directory Oracle Unified Directory (OUD) is the world’s first unified directory solution with highly integrated storage, synchronization, and proxy capabilities. These capabilities help meet the evolving needs of enterprise architectures. OUD customers can lower the cost of administration and ownership by maintaining a single directory for all of their enterprise needs, while also simplifying their enterprise architecture. OUD is optimized for mobile and cloud computing environments where elastic scalability becomes critical as service providers need a solution that can scale by dynamically adding more directory instances without re-architecting their solutions to support exponential business growth. Join us for this webcast and you will: Learn from one customer that has successfully upgraded to the new platform See what technology and business drivers influenced the upgrade Hear about the benefits of OUD’s elastic scalability and unparalleled performance Get additional information and resources for planning an upgrade Register here for the webcast. REGISTER NOW Register now for this complimentary webcast: Sun2Oracle: Upgrading from DSEE to the next generation Oracle Unified Directory Thursday September 13, 2012 10:00 a.m. PT / 1:00 p.m. ET

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  • ArchBeat Link-o-Rama Top 20 for March 18-24, 2012

    - by Bob Rhubart
    The top-twenty most-clicked links as shared via my social networks for the week of March 18-24, 2012. Oracle's ZFS Storage Appliance Simulator | Steen Schmidt Oracle Linux Online Forum - 4 sessions, 9 speakers + live chat March 27 OWSM vs. OEG - When to use which component - 11g | Prakash Yamuna Northeast Ohio Oracle Users Group 2 Day Seminar - May 14-15 - Cleveland, OH SOA! SOA! SOA!; OSB 11g Recipes and Author Interviews Webcast: Oracle Business Intelligence Mobile - March 27 - 10am PT / 1pm ET Oracle Hardware Systems: The Extreme Performance Tour - Dates and Locations Worldwide Oracle Cloud Conference: dates and locations worldwide Mismatch: Developer skills and customer demands | Floyd Teter OTN Virtual Developer Day - Java (APAC - in English) - March 27 Webcast Q&A: Demystifying External Authorization 2 New Cloud Computing resources added to free IT Strategies from Oracle library Encapsulating OIM API’s in a Web Service for OIM Custom SOA Composites | Alex Lopez Webcast: Simplify Oracle RAC Deployment with Oracle VM SOA gets mobilized; mobile gets SOA-ized: survey | Joe McKendrick Integrating with Oracle Fusion Applications: Discovering Integration Artifacts | Rajesh Raheja Oracle Access Manager 11g - useful links | Dmitry Nefedkin Anil Gaur on Cloud Computing Support in Java EE 7 Enterprise app shops announcements are everywhere | Andy Mulholland The extraordinary software development manager | Seth Godin Thought for the Day "Every large system that works started as a small system that worked. " — Anonymous

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  • How can I convert the Nvidia driver installer into a deb?

    - by Oli
    Every so often there's a beta version of the Nvidia driver that I want to try out. This has happened today: there's been a big performance issue with version 295.40 and I want to try the shiny new XRandR-enabled 302.07. I'm more than able to download the installer, remove all the repo-installed driver files and install the new version but it's frankly a pain in the bottom to turn that around and go back to the repo version. It also means I have to re-install the driver manually each time there's a Kernel upgrade. The other option we commonly give people is a PPA but in this case I'm being really impatient. It's going to be a few days before any PPA gets this but I need to try this today. I've already manually installed it on the media centre and I'm eyeing up my desktop now. So how do I take an installer (eg: NVIDIA-Linux-x86-302.07.run) and convert that into a new nvidia-current/nvidia-current-updates package? Another way of asking this might be: How do people package the Nvidia drivers?

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  • Ubuntu 12.04.2 Dual boot UEFI Windows 8 Preinstalled CX21903W Ultrabook

    - by user180782
    Hi i have a problem trying to install ubuntu. The machine is a CX Ultrabook model CX.21903W Intel I5 with 500GB hard disk, 8 GB ram and 32 GB SSD. From Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported), and according to the steps guide: 1 - We create a partition from Win8 (70 GB) from the own win8 program. 2 - Confirm-SecureBootUEFI=True. 3 - From Win8, shift + Restart and from special menu we selected the UEFI Firmware Setting. 4 - From BIOS Option: ------Option 1) Disable Secure Boot. ------Option 2) Disable UEFI (Not Available) from Option 1: Three ways is available. With Secure Boot enable - We can't even boot ubuntu. A red windows saying Soft unproper signed. With Secure Boot disable - and this config in boot device order: ----1: UEFI: USB ----2: Windows Boot Manger ----3: Others and CSM (Compatibility Support Module): enable - GRUB appears and selecting try Ubuntu then a black windows appears and nothing happens. The same result if install ubuntu is selected. With Secure Boot disable - and this config in boot device order: ----1: USB (No UEFI) ----2: Windows Boot Manger ----3: Others and CSM (Compatibility Support Module): enable - GRUB appears and selecting try Ubuntu, - Ubuntu boots and we can install it even. 5 - Rebooting and just changing the boot order as ----1: Ubuntu [] ----2: Windows Boot Manger ----3: Others then nothings happens. 6 - Booting from LiveUSB again and, as per instructed, making Boot-Repair (A warning windows: Ubuntu is working in legacy mode.). 7 - Saving changes and rebooting, Grub works but selecting Ubuntu, a black windows appears and nothing happens. Selecting Win8, Win8 boots and works. Untill now we can't make the ubuntu installation. Any suggestion will be welcomed. kind regards and thanks in advance.

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  • Cloud computing - database loading question

    - by workwise
    Following is the situation, I want to know whether what I want is possible in cloud computing and is it the best way for me: 1) My main site has a Database with tables with millions of rows, and entries are added almost every second. 2) I will setup a mysql mirror, so there will be a backup database always in sync with the main one. 3) There are few tens of thousands of images- growing. So say total size of images few tens of gigabytes. I will be keeping the image data also in sync on the backup server. 4) There can be short periods where traffic can go 100X the average traffic. 5) I will be using memcache heavily - most database and even frequently used disk files/images will be in RAM. I want that the main site runs on a dedicated server. The backup server is say an Amazon EC2 instance. Now note that since it is live backup, I need to run a small instance continuously. I want that when I anticipate high traffic, I should be able to run a large instance on the cloud and transfer the traffic there. The main point is - I do not want to spend time in "loading" the database on the large instance, as it typically can take few minutes or even hours (experience). So is it possible to just scale the memory/CPU on demand, and not having to load the database or sync up the filesystem? I want to setup my backup scripts etc just ONCE. Thanks JP

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  • Do you know the minimum builds to create on any branch?

    - by Martin Hinshelwood
    You should always have three builds on your team project. These should be setup and tested using an empty solution before you write any code at all. Figure: Three builds named in the format [TeamProject].[AreaPath]_[Branch].[Gate|CI|Nightly] for every branch.   These builds should use the same XAML build workflow; however you may set them up to run a different set of tests depending on the time it takes to run a full build. Gate – Only needs to run the smallest set of tests, but should run most if not all of the Unit Test. This is run before developers are allowed to check-in CI – This should run all Unit Tests and all of the automated UI tests. It is run after a developer check-in. Nightly – The Nightly build should run all of the Unit Tests, all of the Automated UI tests and all of the Load and Performance tests. The nightly build is time consuming and will run but once a night. Packaging of your Product for testing the next day may be done at this stage as well. Figure: You can control what tests are run and what data is collected while they are running. Note: We do not run all the tests every time because of the time consuming nature of running some tests, but ALL tests should be run overnight. Note: If you had a really large project with thousands of tests including long running Load tests you may need to add a Weekly build to the mix.     Figure: Bad example, you can’t tell what these builds do if they are in a larger list   Figure: Good example, you know exactly what project, branch and type of build these are for.   Technorati Tags: SSW,SSW Rules,VS2010,VS ALM,Team Build 2010,Team Build

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  • Can't Mount Phone, "according to mtab, /dev/sdb1 is already mounted on /"

    - by RPG Master
    My myTouch Slide wasn't mounting, so I decided to open Disk Utility. My phone shows up but when I click "Mount" it gives me this error: Error mounting: mount exited with exit code 1: helper failed with: mount: according to mtab, /dev/sdb1 is already mounted on / mount failed Here's my mtab: /dev/sdb1 / ext4 rw,errors=remount-ro,commit=0 0 0 proc /proc proc rw,noexec,nosuid,nodev 0 0 none /sys sysfs rw,noexec,nosuid,nodev 0 0 fusectl /sys/fs/fuse/connections fusectl rw 0 0 none /sys/kernel/debug debugfs rw 0 0 none /sys/kernel/security securityfs rw 0 0 none /dev devtmpfs rw,mode=0755 0 0 none /dev/pts devpts rw,noexec,nosuid,gid=5,mode=0620 0 0 none /dev/shm tmpfs rw,nosuid,nodev 0 0 none /var/run tmpfs rw,nosuid,mode=0755 0 0 none /var/lock tmpfs rw,noexec,nosuid,nodev 0 0 binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0 gvfs-fuse-daemon /home/matthew/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=matthew 0 0 /dev/sdg1 /media/Seagate\040GoFlex ext4 rw,nosuid,nodev,uhelper=udisks 0 0 EDIT: Here's my fstab: # /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 /dev/sda1 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda5 during installation UUID=3b0db205-2bdb-4c98-a506-6bdd3520d540 none swap sw 0 0

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  • installing ubuntu on SSD

    - by kunal
    Going to install Ubuntu 10.10 on new intel x25M 80GB SSD. It will be fresh install. I have been googling for past few days and getting overwhelming articles/blogs/Q&As. One particularly very useful being: Optimize for SSD (I could not post other links as i dont have enough credits) But with so many suggestions and differences of opinions (on different links) this simple OS install process seems to be daunting task to me and I really want to stick with ubuntu (although have used for very short period of time). Can someone help me by answering few questions (yes they are repeated as i couldnt comprehend the answers elsewhere) which file system (ext2/3/4 or something else)? (consider SSD life) can it be changed after installation? should i partition the disk? (as we do in traditional HDD) for now, no plan of dual booting. Only ubuntu will live on scarce space of 80GB SSD. i have 2 GB RAM, should i still allocate swap space (if i dont allocate swap space, can i still hibernate the machine)? will swap space impact SSD life? should i consider putting additional 1GB RAM to avoid swap space? Linux experience - absolute novice intended usage - heavy browsing, programming, regular video/music and some other non-CPU/RAM-intensive programs. will backup big files to an external hard drive. laptop config - 3 yr old vaio, core2 duo, 2GB RAM Please pardon the repetition and i really appreciate anyone helping me getting started with ubuntu.

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  • How to update MDS ?

    - by harsh.singla
    The other question that comes to mind is how to update and existing file or creates a new file in MDS. It's really simple. We already have setup done for this in Foundation Pack. Here are the steps you need to do to update or create a new file in MDS 1) Browse to AIA_HOME/AIAMetaData 2) Place your file(it may be new file or modified existing file) at the desired location. The same hierarchy will appear in MDS starting from AIAMetaData. 3) Edit UpdateMetaDataDeploymentPlan.xml in aia_instances/AIA_INSTANCE_NAME/config. 4) In the tag, mention the files which you have modified or added new. You can add a file or directory as required. 5) Browse to AIA_HOME/Infrastructure/Install/scripts 6) Run ant -f UpdateMetaData.xml Here is the same UpdateMetaData Deployment Plan. UpdateMetaDataDP.xml There are some things that you may want to take care while updating MDS 1) The path in "fileset" tag can be anywhere on the disk. 2) The path in "include" tag has to be relative to what is given in "fileset" tag 3) The path is MDS will appear what you have given in "include" tag. The path in this tag will automatically appended to /apps/AIAMetaData/.

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  • Whats the greatest most impressive programing feat you ever witnessed? [closed]

    - by David Reis
    Everyone knows of the old adage that the best programmers can be orders of magnitude better than the average. I've personally seen good code and programmers, but never something so absurd. So the questions is, what is the most impressive feat of programming you ever witnessed or heard of? You can define impressive by: The scope of the task at hand e.g. John single handedly developed the framework for his company, a work comparable in scope to what the other 200 employed were doing combined. Speed e.g. Stu programmed an entire real time multi-tasking app OS on an weekened including its own C compiler and shell command line tools Complexity e.g. Jane rearchitected our entire 10 millon LOC app to work in a cluster of servers. And she did it in an afternoon. Quality e.g. Charles's code had a rate of defects per LOC 100 times lesser than the company average. Furthermore he code was clean and understandable by all. Obviously, the more of these characteristics combined, and the more extreme each of them, the more impressive is the feat. So, let me have it. What's the most absurd feat you can recount? Please provide as much detail as possible and try to avoid urban legends or exaggerations. Post only what you can actually vouch for. Bonus questions: Was the herculean task a one-of, or did the individual regularly amazed people? How do you explain such impressive performance? How was the programmer recognized for such awesome work?

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  • Displaying device contacts with an indication that the contact is registered to the app

    - by Prasanna Aarthi
    We are developing a mobile app that needs to pick up device contacts, display them and indicate if the contact has already registered with this app. We have our DB in the server and the app fetches data using web services. What will be the best approach to implement the above scenario taking performance into consideration. Option 1: Every time user opens the app,fetch the contacts and send the list of email addresses to the server, check with the registered email ids and return the list of registered users in the contact list. In this approach whenever user opens the particular page, he needs to wait for few seconds to load data, but the contacts will be the latest from the device. Option 2: First time when the user opens the app, fetch contacts ,send the entire list of contacts and save it in the DB, retrieve list of registered users in the contacts then save this to local DB. From now on, data will be fetched from local DB and displayed. When a new user registers in the app, again check with records in central DB and send list of new users who are in your contacts that have registered to your app. This list will be added to local DB. and the process continues. In this case the new contacts added by user will not be updated in the app but retrieval and display of records would be quick. What would be the correct approach? In case there is a better way of doing this, please let me know.

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  • Optimization ended up in casting an object at each method call

    - by Aybe
    I've been doing some optimization for the following piece of code : public void DrawLine(int x1, int y1, int x2, int y2, int color) { _bitmap.DrawLineBresenham(x1, y1, x2, y2, color); } After profiling it about 70% of the time spent was in getting a context for drawing and disposing it. I ended up sketching the following overload : public void DrawLine(int x1, int y1, int x2, int y2, int color, BitmapContext bitmapContext) { _bitmap.DrawLineBresenham(x1, y1, x2, y2, color, bitmapContext); } Until here no problems, all the user has to do is to pass a context and performance is really great as a context is created/disposed one time only (previously it was a thousand times per second). The next step was to make it generic in the sense it doesn't depend on a particular framework for rendering (besides .NET obvisouly). So I wrote this method : public void DrawLine(int x1, int y1, int x2, int y2, int color, IDisposable bitmapContext) { _bitmap.DrawLineBresenham(x1, y1, x2, y2, color, (BitmapContext)bitmapContext); } Now every time a line is drawn the generic context is casted, this was unexpected for me. Are there any approaches for fixing this design issue ? Note : _bitmap is a WriteableBitmap from WPF BitmapContext is from WriteableBitmapEx library DrawLineBresenham is an extension method from WriteableBitmapEx

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  • Update Error: Require Installation Of Untrusted Packages

    - by One Zero
    I have googled and found out Updates don't install because of "untrusted packages". It didn't fixed the error. So, how do I fix my GUI update? Updated sudo apt-get update && sudo apt-get upgrade < working The following packages will be upgraded: ambiance-colors radiance-colors 2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 5,029 kB of archives. After this operation, 7,614 kB of additional disk space will be used. Do you want to continue [Y/n]? y WARNING: The following packages cannot be authenticated! ambiance-colors radiance-colors Install these packages without verification [y/N]? Working but when I update from GUI or try to install software from Ubuntu Software Center I got same error as shown in above picture. For every software I have to install it from command line because I got same error when install software from Ubuntu Software Center.

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  • login takes long time

    - by Arkaprovo Bhattacharjee
    I am using Ubuntu 12.04 from past 12 days. In the beginning login was fast enough after I put the password it hardly takes 3 to 4 sec to enter in desktop, but now its taking like more that 40 sec to show desktop after entering password. whats the problem, is there any solution? P.S there is only two programs (psensor and jupiter) that starts automatically after login. boot.log fsck from util-linux 2.20.1 /dev/sda6: clean, 254544/3325952 files, 2133831/13285632 blocks * Stopping Userspace bootsplash[164G[ OK ] * Stopping Flush boot log to disk[164G[ OK ] * Starting mDNS/DNS-SD daemon[164G[ OK ] Skipping profile in /etc/apparmor.d/disable: usr.sbin.rsyslogd Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox * Starting bluetooth daemon[164G[ OK ] * Starting network connection manager[164G[ OK ] * Starting AppArmor profiles [170G [164G[ OK ] * Stopping System V initialisation compatibility[164G[ OK ] * Starting CUPS printing spooler/server[164G[ OK ] * Starting System V runlevel compatibility[164G[ OK ] * Starting Bumblebee supporting nVidia Optimus cards[164G[ OK ] * Starting LightDM Display Manager[164G[ OK ] * Starting save kernel messages[164G[ OK ] * Starting anac(h)ronistic cron[164G[ OK ] * Starting ACPI daemon[164G[ OK ] * Starting regular background program processing daemon[164G[ OK ] * Starting deferred execution scheduler[164G[ OK ] speech-dispatcher disabled; edit /etc/default/speech-dispatcher * Starting CPU interrupts balancing daemon[164G[ OK ]

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  • .NET development on Macs

    - by Jeff
    I posted the “exciting” conclusion of my laptop trade-ins and issues on my personal blog. The links, in chronological order, are posted below. While those posts have all of the details about performance and software used, I wanted to comment on why I like using Macs in the first place. It started in 2006 when Apple released the first Intel-based Mac. As someone with a professional video past, I had been using Macs on and off since college (1995 graduate), so I was never terribly religious about any particular platform. I’m still not, but until recently, it was staggering how crappy PC’s were. They were all plastic, disposable, commodity crap. I could never justify buying a PowerBook because I was a Microsoft stack guy. When Apple went Intel, they removed that barrier. They also didn’t screw around with selling to the low end (though the plastic MacBooks bordered on that), so even the base machines were pretty well equipped. Every Mac I’ve had, I’ve used for three years. Other than that first one, I’ve also sold each one, for quite a bit of money. Things have changed quite a bit, mostly within the last year. I’m actually relieved, because Apple needs competition at the high end. Other manufacturers are finally understanding the importance of industrial design. For me, I’ll stick with Macs for now, because I’m invested in OS X apps like Aperture and the Mac versions of Adobe products. As a Microsoft developer, it doesn’t even matter though… with Parallels, I Cmd-Tab and I’m in Windows. So after three and a half years with a wonderful 17” MBP and upgraded SSD, it was time to get something lighter and smaller (traveling light is critical with a toddler), and I eventually ended up with a 13” MacBook Air, with the i7 and 8 gig upgrades, and I love it. At home I “dock” it to a Thunderbolt Display. A new laptop .NET development on a Retina MacBook Pro with Windows 8 Returning my MacBook Pro with Retina display .NET development on a MacBook Air with Windows 8

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  • i can't uninstall ubuntu software

    - by cunix
    root@cunix:/home/cunix# sudo apt-get remove fern-wifi-cracker Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libqt4-test libqt4-sql-mysql mysql-common libqt4-xmlpatterns libqt4-help python-qt4 python-sip libqt4-sql-sqlite libqt4-sql macchanger libqt4-designer libmysqlclient16 python-scapy libqt4-scripttools Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: fern-wifi-cracker 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. After this operation, 3,514kB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 167661 files and directories currently installed.) Removing fern-wifi-cracker ... dpkg (subprocess): unable to execute installed pre-removal script (/var/lib/dpkg/info/fern-wifi-cracker.prerm): Exec format error dpkg: error processing fern-wifi-cracker (--remove): subprocess installed pre-removal script returned error exit status 2 Errors were encountered while processing: fern-wifi-cracker E: Sub-process /usr/bin/dpkg returned an error code (1) how to uninstall?

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  • Strange behavior on Gnome after update on from 13.04 to 13.10

    - by WayneBrady
    I made an automatic update on my Ubuntu 13.10 (from 13.04) system today. Since this point of time, I am in really big trouble. I use a VNC server with Gnome classic, after the update my Gnome was gone. So i tried everything. Checked the xstartup file of vncserver. Right now I reached a point where I can't find the answer. The logfile says that gnome-session-fallback is missing, even directly after I installed it with apt-get (tried it serveral times, installing, uninstalling and so on). I have no chance to use it as you can see in this terminal copy: root@ip-xxx:~/.vnc# apt-get install gnome-session-fallback Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: gnome-session-fallback 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/2,914 B of archives. After this operation, 247 kB of additional disk space will be used. Selecting previously unselected package gnome-session-fallback. (Reading database ... 210977 files and directories currently installed.) Unpacking gnome-session-fallback (from .../gnome-session-fallback_1%3a3.6.2-0ubuntu15_all.deb) ... Setting up gnome-session-fallback (1:3.6.2-0ubuntu15) ... root@ip-xxx:~/.vnc# gnome-session-fallback The program 'gnome-session-fallback' is currently not installed. You can install it by typing: apt-get install gnome-session-fallback If you have some idea, please give me a hint... Thank you!

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  • Search SSIS packages for table/column references

    - by Nigel Rivett
    A lot of companies now use TFS or some other system and keep all their packages in a single project. This means that a copy of all the packages will end up on your local disk. There is major failing with SSIS that it is sometimes quite difficult to find what a package is actually doing, what it accesses and what it affects. This is a simple dos script which will search through all packages in a folder for a string and write the names of found packages to an output file. Just copy the text to a .bat file (I use aaSearch.bat) in the folder with all the package scripts Change the output filename (twice), change the find string value and run it in a dos window. It works on any text file type so you can also search store procedure scripts – but there are easier ways of doing that. echo. > aaSearch_factSales.txt for /f “delims=” %%a in (‘dir /B /s *.dtsx’) do call :subr “%%a” goto:EOF :subr findstr “factSales” %1 if %ERRORLEVEL% NEQ 1 echo %1 >> aaSearch_factSales.txt goto:EOF

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