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• What should come first: testing or code review?

  - by Silver Light

  Hello! I'm quite new to programming design patterns and life cycles and I was wondering, what should come first, code review or testing, regarding that those are done by separate people? From the one side, why bother reviewing code if nobody checked if it even works? From the other, some errors can be found early, if you do the review before testing. Which approach is recommended and why? Thank you!

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• Google I/O 2012 - Meet the Go Team

  Google I/O 2012 - Meet the Go Team Andrew Gerrand , Rob Pike The Go programming language is an open source project to make programmers more productive. Go is expressive, concise, clean, and efficient. It's a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language. In this fireside chat, Have your Go questions answered by the gophers themselves. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 168 11 ratings Time: 01:00:29 More in Science & Technology

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• Shared storage solution for our sql server backups

  - by Gokhan

  We have 3 clustered sql servers. We have 5+ multi terrabyte databases and their backup files (compressed using quest litespeed) are hitting over 600gb each, We are required to keep at least a week or two weeks (if we can) of weekly full backups and then 6 days differential backups, and a week or 2 weeks worth of log backups local. We are currently limited to 2TB volumes from our san team, we can have multiple volumes but they are expensive ($200 per raw TB per month) and having to deal with many backup volumes instead of a single big volume is difficult. I think if we could have a shared network storage of 20TB+ raid 10 or so for all our servers for keeping the backups and another department will copy them to tape from the network storage and delete files according to the retention period would be good, if this box would be a build in operating system (even unix a complete file storage system) that would be good. What do you guys think, does this make sense to you, is there any manufacturer that sells a storage product like that which that work in a clustered environment? Thank you

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• An Events Based Algorithm for Distributing Concurrent Tasks on Multicore Architectures

  This algorithm makes effcient use of memory resources by limiting the need for garbage collection and takes optimal advantage of multiple cores by employing a "hungry" pull strategy. Algorithm - Garbage collection - Programming - Memory Management - Languages

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• Open Office APIs e Migração de Macros - 23/Fev/11

  - by Paulo Folgado

  AGENDAIntroduction on Oracle Open Office/OpenOffice.org API Oracle Open Office Basic IDE Hallo World and more Oracle Open Office dialog Programming Integrating Macros in Oracle Open Office Appetizer - Using JavaMicrosoft Office Macro MigrationEstimation Macro Migration effortMigrating Macros Migration pitfallsOs participantes deverão ter conhecimentos sólidos de Microsoft Office e de programação VBA.

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• How do I get a Belkin F5D8053 wireless adapter working?

  - by disassembler

  I've tried getting my Belkin N Wireless adapter to work on Ubuntu many times with no luck at all. Each time I seem to arrive at a dead end. After some thorough searching of UbuntuForums and WifiDocs I've gathered some information and narrowed the problem down to an issue with the rtl819xU driver. Here's some info that may help: $ sudo lshw -C network *-network DISABLED description: Wireless interface physical id: 1 bus info: usb@1:2 logical name: wlan0 serial: 00:22:75:38:52:ac capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl819xU multicast=yes wireless=802.11b/g/n $ sudo lsmod Module Size Used by vesafb 13449 1 snd_ice1724 106559 2 snd_ice17xx_ak4xxx 13163 1 snd_ice1724 snd_ac97_codec 105614 1 snd_ice1724 ac97_bus 12642 1 snd_ac97_codec snd_ak4xxx_adda 18436 2 snd_ice1724,snd_ice17xx_ak4xxx snd_ak4114 14326 1 snd_ice1724 snd_pt2258 12986 1 snd_ice1724 snd_i2c 13831 2 snd_ice1724,snd_pt2258 snd_ak4113 14307 1 snd_ice1724 snd_pcm 80244 4 snd_ice1724,snd_ac97_codec,snd_ak4114,snd_ak4113 fglrx 2434640 121 snd_seq_midi 13132 0 snd_rawmidi 25269 2 snd_ice1724,snd_seq_midi binfmt_misc 13213 1 snd_seq_midi_event 14475 1 snd_seq_midi snd_seq 51291 2 snd_seq_midi,snd_seq_midi_event ppdev 12849 0 snd_timer 28659 2 snd_pcm,snd_seq snd_seq_device 14110 3 snd_seq_midi,snd_rawmidi,snd_seq dcdbas 14054 0 r8192u_usb 297246 0 snd 55295 16 snd_ice1724,snd_ac97_codec,snd_ak4xxx_adda,snd_ak4114,snd_pt2258,snd_i2c,snd_ak4113,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 12600 1 snd parport_pc 32111 1 snd_page_alloc 14073 1 snd_pcm shpchp 32345 0 lp 13349 0 parport 36746 3 ppdev,parport_pc,lp usbhid 41704 0 hid 77084 1 usbhid e100 40108 0 floppy 60032 0 $ sudo iwconfig wlan0 802.11b/g/n Mode:Managed Access Point: Not-Associated Bit Rate:1 Mb/s Retry min limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=0/100 Signal level=0 dBm Noise level=0 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 I'd like to know if 1) Is the driver is properly installed and recognized by Ubuntu? 2) What can I do to load the drivers properly and make use of the adapter? Thanks!

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• SQL2008 Won't Work After SP1 Install?

  - by leen3o

  I have SQL2008 installed on my Win2008 server, and its been working fine - I have sites running using SQL databases etc.. I thought I would install SQL2008 SP1, but after install I cannot connect to SQL via Management Studio, and in configuration manager I cannot start SQL? TITLE: Connect to Server Cannot connect to #MYINSTANCENAME#. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=-1&LinkId=20476 BUTTONS: OK I'm not really a techie so a bit stuck?? any ideas??

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• Create SQL Server Analysis Services Partitions using AMO

  When you have SSAS cubes with millions of rows of data, it is very helpful to create partitions. If you have a few cubes you could probably do this manually, but if there are many or if you want to automate this process you should look for smarter solutions such as programming the creation of partitions dynamically. NEW! Never waste another weekend deployingDeploy SQL Server changes and ASP .NET applications fast, frequently, and without fuss, using Deployment Manager, the new tool from Red Gate. Try it now.

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• Writing a Master's Thesis on evaluating visual scripting systems

  - by user1107412

  I am thinking to write my Master's thesis around theorizing, and then implementing a PlayMaker or Kismet-like (building game logic by visually arranging FSMs) tool in Unity. The only thing I am still concerned about is the actual research question that I should pose. I was kinda hoping that the more experienced game designers out there might know. Update: What about reducing the use of visual programming to graphically designing FSM-Action-Transition flows, which can then be attached to game entities (very much like http://playmaker.com does it)?

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• Some notebooks can connect to internet via certain wireless router, some can't

  - by Nathaniel

  I take a class in the building of a business and we sometimes use their internet via Wi-Fi. In the last few weeks, though, some notebooks haven't been able to connect to the internet even though they are connected to the router. It affected first a few of us and then all of us. Last week I tweaked around the network settings on the router (yes, the admin password is the same as the network key) and even moved the internet cable on the router from port 1 to the internet port. None of this really worked so I put things more or less back as I found them and alerted someone that someone who knew more than me had better have a look at the router. So, I don't know if anybody has had a look at it but now 2 of us can again connect to the internet. I had a look at the router settings last week and I really couldn't see what might be creating this issue. What might be the problem?

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• IPv6 connections routed to IPv4 device

  - by Yvan JANSSENS

  I have an IBM 9406-250 with V5R1 and IPv4 only connectivity, and want it to be reachable over IPv6. I cannnot install an IPv6 stack on it, but I want it to be accessible by IPv6 so I can drop the requirement to VPN to my home network. I have an OpenWRT device running, which takes care of the IPv6 routing on my network and the tunnel to SIXXS, and I was wondering if it is possible to assign another IPv6 address to that device, and route it to the IPv4 IBM computer. Which software do I need for this, and how is this technique called?

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• Liberate Your Laptops! The Return of Virtual Developer Day

  - by Justin Kestelyn

  Many enterprises are reducing travel, conference, and training budgets for their developers without any change in expectation for the results those developers must deliver. How can you keep up? Well, some months back we offered you a Virtual Developer Day on the subject of building Rich Enterprise Applications, the key piece of which was free access to a cloud development environment for hands-on. Now it's back, new and improved! Join us for a FREE, online, multi-language event series for developers (English version is on July 27) at Oracle Technology Network 's Virtual Developer Day. This unique one-day event provides you the opportunity to: 1. Get trained on Oracle Tuxedo from the comfort of your laptop 2. Get hands-on, locally with Oracle VM VirtualBox or via the Cloud 3. Learn what Python, Ruby, and PHP have to do with Oracle Tuxedo 4. Network online with peers, Oracle Tuxedo architects and developers worldwide 5. Sessions, Labs, and Live Help in LOCAL Languages! Review the agenda details, dates, and language support options. Space is limited, so register for this event now! For information and to register go to: www.oracle.com/goto/otnvdd

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• Windows 7 stopped connecting to samba share

  - by Jan

  I have a problem with Windows 7 Home connecting to samba on linux server. It's worked fine for a year and without any changes in configuration or updates it suddenly stopped working. The strangest thing for me is that it stopped working for no reason that I could think of. After a few minutes after trying to connect I get: \\ip is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. Other computers in that network (XP machines) connect to samba without any problem. I've tried adding LmCompatibilityLevel as described here: http://www.tomshardware.com/forum/75-63-windows-samba-issue , but it didn't help.

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• C# 5: At last, async without the pain

  - by Alex.Davies

  For me, the best feature in Visual Studio 11 is the async and await keywords that come with C# 5. I am a big fan of asynchronous programming: it frees up resources, in particular the thread that a piece of code needs to run in. That lets that thread run something else, while waiting for your long-running operation to complete. That's really important if that thread is the UI thread, or if it's holding a lock because it accesses some data structure. Before C# 5, I think I was about the only person in the world who really cared about asynchronous programming. The trouble was that you had to go to extreme lengths to make code asynchronous. I would forever be writing methods that, instead of returning a value, accepted an extra argument that is a "continuation". Then, when calling the method, I'd have to pass a lambda in to it, which contained all the stuff that needed to happen after the method finished. Here is a real snippet of code that is in .NET Demon: m_BuildControl.FilterEnabledForBuilding(     projects,     enabledProjects = m_OutOfDateProjectFinder.FilterNeedsBuilding(         enabledProjects,         newDirtyProjects =         {             // Mark any currently broken projects as dirty             newDirtyProjects.UnionWith(m_BrokenProjects);             // Copy what we found into the set of dirty things             m_DirtyProjects = newDirtyProjects;             RunSomeBuilds();         })); It's just obtuse. Who puts a lambda inside a lambda like that? Well, me obviously. But surely enabledProjects should just be the return value of FilterEnabledForBuilding? And newDirtyProjects should just be the return value of FilterNeedsBuilding? C# 5 async/await lets you write asynchronous code without it looking so stupid. Here's what I plan to change that code to, once we upgrade to VS 11: var enabledProjects = await m_BuildControl.FilterEnabledForBuilding(projects); var newDirtyProjects = await m_OutOfDateProjectFinder.FilterNeedsBuilding(enabledProjects); // Mark any currently broken projects as dirty newDirtyProjects.UnionWith(m_BrokenProjects); // Copy what we found into the set of dirty things m_DirtyProjects = newDirtyProjects; RunSomeBuilds(); Much easier to read! But how is this the same code? If we were on the UI thread, doesn't the UI thread have to block while FilterEnabledForBuilding runs? No, it doesn't, and that's the magic of the await keyword! It cuts your method up into its constituent pieces, much like I did manually with lambdas before. When you run it, only the piece up to the first await actually runs. The rest is passed to FilterEnabledForBuilding as a continuation, which will get called back whenever that method is finished. In the meantime, our thread returns, and can go back to making the UI responsive, or whatever else threads do in their spare time. This is actually a massive simplification, and if you're interested in all the gory details, and speed hacks that the await keyword actually does for you, I recommend Jon Skeet's blog posts about it.

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• is there a way to prespecify to overwrite files with same name?

  - by Celeritas

  Connections to network drives are ridiculously slow (e.g. 15kb/sec on really good days) and when I'm copying files I leave my desk. My problem is when there is a file with the same name to be overwritten, is there a way to specify in advanced to overwrite files? I know it has the option "do same for next x conflicts" but that doesn't popup until (in some cases) a long time after the files start copying. See my dilemma? Example: copying 500 files, estimated time 2 hours, I leave, after 10 minutes message comes up about file with same name and asks if it should overwrite (in this time copying stalls), I come back 30 minutes latter to find only the files in the 10 minutes copied. Out of curiosity how could the network speed be so bad? I asked the boss and he said because it gets routed around a lot and is just bad :(

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• Basic networking: Centos Server Router + Ubuntu Client setup.. unable to access outside world from client

  - by ale

  I am trying to set up my Centos Server with two NICs as a router. eth0 is connected to the outside world and eth1 is connected to an Ubuntu client. Here's eth0 on the server: DEVICE=eth0 BOOTPROTO=dhcp ONBOOT=yes TYPE=Ethernet eth1 on the server: DEVICE=eth1 BOOTPROTO=static IPADDR=192.168.0.10 # a free address on my network ONBOOT=yes TYPE=Ethernet My server has IPv4 packet forwarding turned on and my iptables only contains: # iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE # iptables --append FORWARD --in-interface eth1 -j ACCEPT My Ubuntu client has this in its /etc/network/interfaces auto lo iface lo inet loopback iface eth0 inet dhcp gateway 192.168.0.10 but I can't get an Internet connection from the server for my client. I can't even ping my server from the client: $ ping 192.168.0.10 Destination Host Unreachable

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• Characteristics and Common Usage Scenarios of SSIS Variables

  SQL Server Integration Services' primary purpose is to serve as a database development platform. As such, it is subject to standard best practices of software programming, which among other recommendations, advocate reusability. Realizing this objective in SSIS frequently involves the use of variables. Their characteristics and most common usage scenarios will be the primary subject of our presentation.

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• Windows 8.1 killed my wifi

  - by char1es

  Was running Windows 8 on a Lenovo G780 and updated to windows 8.1 Wifi does not work anymore, i always receive a dns server not responding error. I have tried using public dns servers from Google but with still no results. I've restarted my router with no results. All other devices on my network are having no trouble at all. I've tried updating the wireless driver but the manufacturers website claims that the Win8.1 driver should be updated with the update from windows. So i cant find a wireless driver... Anyone else having this error and does anyone have any ideas on how to fix it?? EDIT: here are the driver details: Broadcom 802.11n Network Adapter Provider: Microsoft Driver Date: 2013-05-31 Driver Version: 6.30.223.102 Digital Signer: Microsoft Windows Thanks

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• GWB -- Little More Interesting Info

  - by lavanyadeepak

  GWB -- Little More Interesting Info Whilst writing the post on 'Warming with GWB', I just recalled another historic entity often shortly known as GWB. It is in fact 'GWBasic' which we I started programming about fifteen years back way back in 1994 to 1995.   GWBASIC was actually a version of BASIC in the lines of BASICA from Compaq. Eventually it was absorbed into QBasic and QuickBasic suite of products. Just thought I would share this recollection too in this context.

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• What is Finder doing when it has a spinner in the bottom-right?

  - by rspeicher

  Whenever I open a folder on a remote network share that hasn't been opened since I last booted, Finder displays this animated spinner in the bottom-right (see picture below) for about 30 seconds and won't display any of the folder's contents until it's done doing whatever it's doing. This makes browsing the share painfully slow for seemingly no reason. Why's it doing this? I should note that I've disabled .DS_Store files littering network shares using defaults write com.apple.desktopservices DSDontWriteNetworkStores true, so maybe that's why. I'm kind of hoping it's something else, though.

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• How to connect MTS MBlaze on ubuntu 11.04

  - by murali_ma

  i have installed ubuntu 11.04 inside the windows xp. i have MTS Mblaze USB Modem. (my service provider is MTS MBlaze,india) i want to use Mblaze into ubuntu so that i did the following steps for make connecting the device. from the task bar->edit connections->mobile broadband->choose country->mts mblaze and ok i give username and password ([email protected] and password MTS. ok now i enable mobile broadband , MTS MBlaze connection1(connection name) from task bar. steps followed from "http://randomshandom.wordpress.com/2010/12/20/how-to-connect-mts-mblaze-device-in-ubuntu-10-10-11-04/#more-3" for the first time it successfully connected and browse the internet. after i restart the system i connect it. it does not connected. it shows Modem network disconnected. i accessed many times and delete the connection and recreated but i does not help me. if i try to connect device i think it the search the network, i saw the wave signal. img Image for showing problem:

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• Frequent disconnects using wlan AR9285

  - by John Neil

  I'm getting a large number of disconnects from my wireless when I switched to oneiric server (I did not see these happen with oneiric desktop) from my AR9285 wireless LAN device. Here is the syslog snippet: Oct 17 09:43:17 weather kernel: [ 1537.329138] wlan0: deauthenticated from 00:12:17:7a:8e:42 (Reason: 7) Oct 17 09:43:17 weather kernel: [ 1537.340409] cfg80211: All devices are disconnected, going to restore regulatory settings Oct 17 09:43:17 weather kernel: [ 1537.340423] cfg80211: Restoring regulatory settings Oct 17 09:43:17 weather kernel: [ 1537.340435] cfg80211: Calling CRDA to update world regulatory domain Oct 17 09:43:17 weather kernel: [ 1537.348571] cfg80211: Ignoring regulatory request Set by core since the driver uses its own custom regulatory domain Oct 17 09:43:17 weather kernel: [ 1537.348581] cfg80211: World regulatory domain updated: Oct 17 09:43:17 weather kernel: [ 1537.348586] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Oct 17 09:43:17 weather kernel: [ 1537.348594] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348600] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348607] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348613] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Oct 17 09:43:17 weather kernel: [ 1537.348620] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Here is the relevant lspci output: # lspci | grep Atheros 02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) I have done quite a bit of searching and saw discussions for previous versions of ubuntu that recommended installing the linux-backports-modules package. However, this does not appear to be available for oneiric (just the headers are listed as a package). Any advice on how to achieve a stable wireless connection for this server? It's location mitigates against using a wired connection.

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• dns hierarchy not working !! Please help

  - by nikhilelite

  (DNS1 ,WWW1, Gateway1) (sub-internal network) (DNS0,WWW0,Gateway0) (internal network) DNS1: 192.168.250.3/24 WWW1: 192.168.250.4/24 Gateway1: 192.168.250.1 /24 (internal) :: 192.168.0.150 to 192.168.0.175 (external) DNS0:192.168.0.197/24 WWW0:192.168.0.197/24 Gateway0: 192.168.0.1 (internal) :: 69.94.x.x (external, dynamic ,isp control) Expected behavior: When using dig from internal (192.168.250.0/24) hosts, and query about domain from 192.168.0.197/16 nameserver's hosts (for which its authoritative) , it should return the ip address. Whats happening: After dig, answer section empty, the query is trying to access a.root server instead of 192.168.0.197 ,even though i have defined 192.168.0.197 as dns in gateway1's resolv.conf Why? I need this working asap, can anyone here help ?

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• My 5th App

  - by Richard Jones

  So, I’ve just completed my 5th commercial iPhone App.   Always when I move to a new programming language I take a test application and port it to learn.   So my equivalent of “Hello World” app.  is - http://itunes.apple.com/gb/app/iching-master/id424495901?mt=8 I built this, as an app about a year ago,  but figured that it worked so well on iOS that I would get it published. Technorati Tags: I-Ching,iChing,iPhone,iTunes

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• What if a computer with Ethernet

  - by George Nixon

  I'm just revising for an exam on Networks and Data Communications, and there's one thing I don't get about CSMA/CD and Ethernet. It's supposed to be fairly stable, for instance if a computer drops out of the network, it's not a problem like it might be in a token ring network (I think). But Ethernet works by all the other computers waiting for the currently transmitting computer to finish what it's doing, and then the others use CMSA/CD to determine who goes next. What if one computer malfunctioned and kept sending a continuous stream of data in an infinite loop? In fact, is there a standard time for pcs to transmit before they yield to others?

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