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• What's the advantage for 'attach to process' compared with 'Start Debugging'?

  - by Nano HE

  Hi. I am new to programming. I know only Start debug before. Maybe start debug suit for some small application develop better. I found Visual studio IDE provide another method of attach to process for using. When & Why must I use the attach debugging? Such as multi-threading application debugging. Client/Service application debugging. etc. Thank you.

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• What would happen to GC if I run process with priority = RealTime?

  - by Bobb

  I have a C# app which runs with priority RealTime. It was all fine until I made few hectic changes in past 2 days. Now it runs out of memory in few hours. I am trying to find whether it is a memory leak I created of this is because I consume lot more objects than before and GC simply cant collect them because it runs with same priority. My question is - what could happen to GC when it tries to collect objects in application with RealTime priority (there is also at least one thread running with Highest thread priority)? (P.S. by realtime priority I mean Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.RealTime) Sorry forgot to tell. GC is in Server mode

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• What lessons have you learned about using a wiki as a development tool?

  - by Vivek Kodira

  I'd asked a question a while back about ways to encourage my team to collaborate. The tool we use is a wiki. Since this is the first time we are using the wiki (formally and as a team), we are learning by committing mistakes. One of the lessons has been that a wiki isn't suitable for tracking activities. It is better to use a tool built for-the-job (will elaborate if necessary). Are there other such anti-patterns? What development tasks would you NOT recommend using a wiki for (even though it may seem suitable at first glance)? Edit: Making this a community-wiki since it is probably unlikely that there will be 'one' right answer.

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• how to find out how much application memory django process is (or will be) taking?

  - by photographer

  There are different "Application memory" options (like 80MB...200MB) in django-friendly hosting called webfaction and I'm confused deciding which one I should buy. Could someone please walk me through the ideas on how to figure out how much memory my project might require (excluding operating system, the main apache server and the database servers memory requirements)? I understand in theory I'll need to perform some kind of load testing, but thought there might be ways to calculate that in advance with some simple/relatively easy understandable approach. I don't know how hard they enforce application memory usage limit, and another question is: what will happen if more users came to the site and more threads started than what I expected? Will the application crash? Or will delays just become uncomfortable? And - no, application is not ready yet (I can't measure anything right now). Development environment if it matters is Winodows 7, 64-bit. Hosting itself is some kind of Linux I think. (Sorry if it's not a stackoverflow question.)

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• C# What would happen to GC if I run process with priority = RealTime?

  - by Bobb

  I have a C# app which runs with priority RealTime. It was all fine until I made few hectic changes in past 2 days. Now it runs out of memory in few hours. I am trying to find whether it is a memory leak I created of this is because I consume lot more objects than before and GC simply cant collect them because it runs with same priority. My question is - what could happen to GC when it tries to collect objects in application with RealTime priority (there is also at least one thread running with Highest thread priority)? (P.S. by realtime priority I mean Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.RealTime)

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• how to catch the event when the particular application process is being suspended using task manager?

  - by Mohan

  I am developing a simple application where in we have predefined quotas on usage for each user on the system.. and if the quota is up..the system should logoff of the user account.. this will happen if the application is allowed to run.. but if the user is closing the application on his own ..the app should automaticaly logoff the account.. i did exactly that in writing forced logoff code in form-closing event.. but if we are closing the app/process using the taskmanager.. the form closing event is not being called. and so the user is able to continue even if his quota of time is up.. can anybody helpme out with this..

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• Is the development stack of java/spring/hibernate/eclipse/tomcat/mysql riddled with config hacking?

  - by Blankman

  From a M$ development perspective, using things like vs.net/c#/asp.net/asp.net mvc/sql server, things are pretty much smooth. (Obviously for someone coming from a microsoft background like me). Now I love the idea of open source, linux and terminal servering into the computer and doing things via the command line, no license issues really, etc. I've tried firing up eclipse etc., but I always seem to get stuck on some configuration issue or another. Does it get easier or is it just the territory when you are dealing with the java stack?

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• Does the OS make a significant difference for Ruby Development ?

  - by Bragaadeesh

  Hi, I have been working in Java for the past 4 years and I am currently switching over to Ruby. I am so excited about it and I feel good to finally get a hands on experience on a scripting language first time. The task assigned to me is to first pick a OS of my choice and setup a Ruby in it and study for 2 weeks. I have been developing applications in windows and Linux is not my cup of tea. Some part of me wants to try out Linux but I want to first convince myself whether OS really matters for Ruby development. If Linux does matter, which distribution can I start looking at? Please advise.

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• is it a good idea to write tests for environments other than development?

  - by jcollum

  Let's say I have a (fairly typical) set of environments: PROD, UAT, QA, DEV. Is it a good idea to run your tests across all environments? Here's what I'm thinking of. I have a proc in SQL that my code depends on, I'll call it proc_getActiveCustomers. If that proc isn't present my app will go south real fast. So I write a test that checks for the existence of this proc in the database. Nothing new here. But when I then deploy my app to the QA environment, would I also want to have a test that checks that environment for the existence of proc_getActiveCustomers? I think this is a good idea but I've never heard much about testing in environments outside of development. Makes me wonder if there's some downside I'm not aware of. The direction that I'm going is to have a list of environments in code and then passing that environment into my unit test.

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• How do you manage battery health of your development devices when is always plugged in?

  - by Pentium10

  I know this question is not programming related, so for this I made community wiki. Developers are the best guys to answer the question. I am addressed to those that do development on devices that runs on batteries, like phones, gadgets etc. Probably you are constantly develop for them, and therefor they are always plugged in and charged at 100%. We develop mainly for smartphones and we have devices that were always above 90% charged in the last month or so. If a battery is always charged, it degrades it life cycle, so what steps you do to ensure decent battery drain to maximize the life of the batteries.

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• Is it possible to remove folders from a web application build process in vs 2010?

  - by JL

  I had previously asked this question. At the time I was working with VS 2008. To restate the question. I have a web application that generates 1000's of small xml files in a certain directory. I would like to exclude this directory from the build process in visual studio 2010. With vs 2008 it was not possible. Has anything changed? Besides the general wait for VS to iterate through this directory with each build, it also strains my system resources, so I would like to exclude it from the project, but the dir and files need to physically exist on disk, because they are part of the application. Any OOB VS 2010 solutions, or any good workarounds? Thanks

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• How to avoid wasting time during compilation during development?

  - by user259576

  Hello, I'm working with a small team of developers. My job is to convert a Make project (with Intellij Idea 9.0) into a Maven 2 project. The problem is : we spend a lot of time during the development. With Make, only one complete build was required and then any change did not consume a lot of time (almost instantaneously). On the other hand, with Maven 2, a little change takes a lot of time to run. Any solution ? Thanks.

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• Correct way to textually report the remaining time on a long running process?

  - by Ryan

  So you have a long running process, perhaps with a progress bar, and you want a text estimate of the remaining time, eg: "5 minutes remaining" "30 seconds remaining" etc. If you don't actually want to report clock time (due to accuracy or resolution or update-rate issues) but want to stick to the text summary, what is the correct paradigm? Is "one minute" left displayed from 0 to 60 seconds? or from 1:00 to 1:59? Say there's 1:35 Left - is that "2 minutes remaining" or "1 minute remaining"? Do you just pare it down to "A few minutes left" when you're less than 3 minutes? What is the preferred (least user-frustrating) method?

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• Does Visual Studio run Tests with a less privileged process?

  - by Filip Ekberg

  I have an application that is supposed to read from the Registry and when executing a console application my registry access works perfectly. However when I move it over to a test this returns null: var masterKey = Registry.LocalMachine.OpenSubKey("path_to_my_key"); So my question is: Does Visual Studio run Tests with a less privileged process? I tested to see what user this gave me: var x = WindowsIdentity.GetCurrent().Name; and it gives me the same as in the console application. So I am a bit confused here.

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• iPhone / ios development - best way to check if password is secure enough?

  - by Pranoy C

  what is the best way to check the strength of a password in iOS development? I came across this post: What is the best way to check the strength of a password? but this is not iOS specific. My question is - Does Apple or third party libraries provide any libraries by default which I can use to check if the user entered a secure password? If not, then as the above post says, is using regular expressions the best way? Does Apple have any requirements which our app needs to implement to make sure user has a secure password? I am planning on using the keychain to store the password.

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• Why does Apple use Objective-C for iPhone development? (App Store)

  - by Luca Matteis

  I'm interested to know your opinion on why Apple uses a language such as Objective-C for app development. Does Apple's app store allow apps written only in this language? Does apple even look at your source-code or does it just care of the binary output? I learned that most of their app rejection (in the app store) is based upon apps crashing (probably memory leaks in which Objective-c is not very efficient unless you use a GC). Why not let developers use a safer language, like a scripting language? I think these are important questions for a developer (I don't even use Apple's products) because it seems like Apple's app store is the MOST successful app sale place on the web.

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• In Cocoa (or maybe GUI development in general) how do you specify an arbitrary number of things tile

  - by RankWeis

  I'm new to creating GUI's, everything I've done up until this point is using the command line. I'm trying to create a port of minesweeper to the macintosh, as an experiment, and I've got the CLI working, but I'm running into walls everywhere with the gui. The first thing it seems I have to do, however, is be able to tile n x m 'boxes' for grid - and I'm not sure how to do that. The information is ready to be handed to it, but I don't know where to do it, or how. Also, if anyone has any recommendations for sites/Cocoa development books, feel free to drop them in here... Thanks!

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• How can I remove Ruby, Rails & mysql to start the installation process again?

  - by ben

  I've been trying to get setup with Ruby on Rails today, but I think I've followed some bad instructions along the way, and nothing seems to work. I've now borrowed the book "Agile Web Development with Rails, Third Edition" from a friend, and want to follow the setup instructions in that. Firstly, do I need to remove what I've setup previously? If yes, how do I do it? I can't seem to find instructions anywhere. I'm running OSX 10.6.1, so I know that it came with some stuff already setup, but I've been installing customized stuff over the top which I think I'll have to remove. Thanks for reading!

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• Cannot open TUN/TAP dev /dev/as0t0: No such file or directory (errno=2)

  - by Mark

  I just attempted to install OpenVPN Access Server on my Debian VPS that uses OpenVZ. It installed fine, however when I try to start it from the administration panel, I get these errors: process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t0: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t1: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t2: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t3: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t4: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t5: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t6: No such file or directory (errno=2)'] service failed to start or returned error status process started and then immediately exited: ['Sat Sep 22 19:14:33 2012 Cannot open TUN/TAP dev /dev/as0t7: No such file or directory (errno=2)'] service failed to start or returned error status Is there a solution for this?

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• What tells initramfs or the Ubuntu Server boot process how to assemble RAID arrays?

  - by Brad

  The simple question: how does initramfs know how to assemble mdadm RAID arrays at startup? My problem: I boot my server and get: Gave up waiting for root device. ALERT! /dev/disk/by-uuid/[UUID] does not exist. Dropping to a shell! This happens because /dev/md0 (which is /boot, RAID 1) and /dev/md1 (which is /, RAID 5) are not being assembled correctly. What I get is /dev/md0 isn't assembled at all. /dev/md1 is assembled, but instead of using /dev/sda2, /dev/sdb2, /dev/sdc2, and /dev/sdd2, it uses /dev/sda, /dev/sdb, /dev/sdc, /dev/sdd. To fix this and boot my server I do: $(initramfs) mdadm --stop /dev/md1 $(initramfs) mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1 $(initramfs) mdadm --assemble /dev/md1 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2 $(initramfs) exit And it boots properly and everything works. Now I just need the RAID arrays to assemble properly at boot so I don't have to manually assemble them. I've checked /etc/mdadm/mdadm.conf and the UUIDs of the two arrays listed in that file match the UUIDs from $ mdadm --detail /dev/md[0,1]. Other details: Ubuntu 10.10, GRUB2, mdadm 2.6.7.1 UPDATE: I have a feeling it has to do with superblocks. $ mdadm --examine /dev/sda outputs the same thing as $ mdadm --examine /dev/sda2. $ mdadm --examine /dev/sda1 seems to be fine because it outputs information about /dev/md0. I don't know if this is the problem or not, but it seems to fit with /dev/md1 getting assembled with /dev/sd[abcd] instead of /dev/sd[abcd]2. I tried zeroing the superblock on /dev/sd[abcd]. This removed the superblock from /dev/sd[abcd]2 as well and prevented me from being able to assemble /dev/md1 at all. I had to $ mdadm --create to get it back. This also put the super blocks back to the way they were.

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• what is ip 10.1.1.130 to which seems monitored by NT Kernel & System process on Windows 7?

  - by EndangeringSpecies

  I used netstat to see what is happening with network connections, and I see this weird ip address somehow listed together with PID 4 "NT Kernel & System", whatever that might be. Netstat describes it as a "local address" and there is no "foreign address" involved (btw, what are local and foreign addresses anyway?) In the column to the right there is neither "listening" nor "established" record, so no record at all there.

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• How to unlock files using handle.exe and process name?

  - by Radek

  I tried Unlocker 1.9.1 but it doesn't work correctly for me on Windows7 (worked ok on Windows XP) and also I tried LockHunter 2.0.2.103 x64 and reported a bug but .... LockHunter actually unlocks the file from GUI but not from command line. So I want to use handle.exe by SysInternals to unlock one file "TestPro.log". I know the absolut path if it helps. I can list and all processes that locked the file by executing C:\Windows\system32>c:\edutester\progs\handle testpro.log java.exe pid: 2120 type: File 338: C:\Users\Public\TestPro \TestPro Automation Framework\Logs\TestPro.log java.exe pid: 1004 type: File 934: C:\Users\Public\TestPro \TestPro Automation Framework\Logs\TestPro.log What I need to know how to unlock the file using above info from command line automatically. No user intervention is possible. Windows 7 64bit Microsoft Windows [Version 6.1.7601]

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• Prevent important OS X process being swapped out, without code change?

  - by purplie

  I want hotkey-based utilities like Quicksilver or Zooom to respond immediately. But if they have been idle for a while, they (I guess) get swapped out, and respond slowly, sometimes not even responding to the first few keystrokes I wanted to send to them. How can I encourage such processes (i.e. chosen processes, not all processes system wide) to remain in active memory? Or, am I misunderstanding the problem?

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• How to launch a remote process through ssh and end the connection?

  - by Lukasz Lew

  This is still blocking: ssh host nohup cmd This still leaves the connection open: ssh host nohup cmd &

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• How do I prevent infinite recursion in X11 start-up process?

  - by chrisaycock

  I wasn't able to run X11 or Terminal after rebooting my Mac. After digging around, I got them to work when I commented-out this line in my .cshrc: xset b off It appears that xset will attempt to launch X11 if it isn't running already, and since X11 will launch the default shell through xterm and thus encounter the xset line above, we will have an infinite loop. I would like to keep the above line in my .cshrc. Is there a way to prevent X11 from launching itself?

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