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• Python/X11: find out if user switches virtual desktops

  - by Philip

  Hello everyone, I'm looking for a way to determine if the user switches virtual desktops under X11. I'm using Python with X11 libraries and PyGTK. I found some working examples in C, but I lack the expertise to translate them into Python, and I read the source code of several X11 pager applications (fbpanel, pypanel), but I can't seem to find what I'm looking for. Do I have to register for a signal? Using X11 or GTK? Do I have to busy-wait? I'm completely new to both X11 and GTK, so any hints/help would be greatly appreciated. Greets, Philip PS: My current efforts can be found here.

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• SQL DISTINCT Value Question

  - by CPOW

  How can I filter my results in a Query? example I have 5 Records John,Smith,apple Jane,Doe,apple Fred,James,apple Bill,evans,orange Willma,Jones,grape Now I want a query that would bring me back 3 records with the DISTINCT FRUIT, BUT... and here is the tricky part, I still want the columns for First Name , Last Name. PS I do not care which of the 3 it returns mind you, but I need it to only return 3 (or what ever how many DISTINCT fruit there are. ex return would be John,Smith,apple Bill,evans,orange Willma,Jones,grape Thanks in advance I've been banging my head on this all day.

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• Validate password on change of certain fields in RoR

  - by Micke

  Hello, I am building a RoR app, a community. With a User model and some fields. So when a user is updating a certain field, like His/Hers berthday. Then i want to validate that the User typed in the password that is the same in the Database. So I know that it is the right user trying to change the birthday. So i ask you how i can create shuch a validator. Allso i would like to be able to specify an array of which fields the user has to validate the password to change. Ps. I am using RoR3. If it mathers. Thanks, Micke

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• How can I use Moose with Test::Class?

  - by rassie

  I'm currently refactoring a test suite built up by a colleague and would like to use Test::Class[::Most] while doing so. As I started I figured out I could really use a couple of Moose roles to decouple code a little bit. However, it seems it's not quite possible -- I'm getting error messages like this one: Prototype mismatch: sub My::Test::Class::Base::blessed: none vs ($) at /usr/lib/perl5/vendor_perl/5.8.8/Sub/Exporter.pm line 896 So the question is: can I use Moose together with Test::Class and if so, how? PS: The code goes like this: package My::Test::Class::Base; use Moose; use Test::Class::Most; with 'My::Cool::Role'; has attr => ( ... );

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• What's the best BDD framework for working with ASP.NET MVC 2 + C# 4?

  - by Soul_Master

  I just heard about BDD when I watch video of Scott Guthrie in Sweden. One of listener asked question to Scott about How VS2010 and ASP.NET MVC do to support BDD. After that, I search about BDD (Behavior Driven Development) that focus on specification more than unit testing when compares with TDD (Test Driven Development). I found some framework that work with Ruby and Java. But I do not any famous framework for .NET. Please suggest me about BDD framework and summary PROs/CONs of it. PS. Suggested BDD framework must work great on .NET 4, C# 4.0 and ASP.NET MVC 2. Thanks,

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• Anyone using Moles / Pex in production?

  - by dferraro

  Hi all, I did search the forum and did not find a similar question. I'm looking to make a final decision on our mocking framework of choice moving forward as a best practice - I've decided on Moq... untill I just recently discovered MS has finally created a mocking framework called Moles which seems to work similar to TypeMock via the profiler API sexyness etc.. There's a million 'NMock vs Moq vs TypeMock vs Rhino....' threads on here. But I never see Moles involved.In fact, I did not even know if its existence until a short time ago. Anyone using it? In Production? Anyone dump their old mocking framework for it, and if so, which one? How did it compare to ther mocking frameworks you've used? thanks.. ps, we are using VS2008 and are moving to 2010 shortly.

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• Passing URL parameter and a form data together

  - by Fabio

  I have following URL: http://localhost:49970/Messages/Index/9999 And at view "Index" I have a form and I post the form data to the action Index (decored with [HttpPost]) using Jquery, like this: View: <script type="text/javascript"> function getMessages() { var URL = "Index"; $.post( URL, $("form").serialize(), function(data) { $('#tabela').html(data); } ); } </script> <% using (Html.BeginForm()) {%> <%=Html.TextArea("Message") %> <input type="button" id="submit" value="Send" onclick="javascript:getMessages();" /> <% } %> Controller: [HttpPost] public ActionResult Index(FormCollection collection) { //do something... return PartialView("SomePartialView", someModel); } My question: How can I get the parameter "9999" and the form FormCollection in the action Index? PS: Sorry about my english :)

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• Is there a library for editing program flow?

  - by Iulian Serbanoiu

  Hello, I was wondering if there is a library for editing program flow. I refer to conditions if, loops (do, while, for) and other elements that can exist inside a program. What I would like to have is some sort of a CAD application (similar to an UML editor) from where I can take some elements and edit their properties, make connections between them. Do you know similar software that does this, or resembles a little what I'm trying to achieve? Thanks, Iulian PS: It is something that should resemble this image. PS2: I want to write code for doing this, I was wondering if such things exist.

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• Get the date of a given day in a given week...

  - by Sean.C

  i need to start at a year-month and work out what the date it is in a given week, on a given day within that week.. i.e year: 2009 month: 10 week: 5 day-number: 0 would return 2009-10-25 00:00:00 which is a sunday. Notice week 5, there is no day 0 in week 5 in 2009-10 as the sunday in that logical week is 2009-11-01 00:00:00... so week 5 would always return the last possible date for the given day in the given month.. if you havn't guessed already i'm messing with the c struct TIME_ZONE_INFORMATION (link text) which is pretty crazy if i'm fair... Date math and SQL are something to be admired, sadly its something i have never really dug deep into beyond stripping times. Any help would be greatly appriciated. PS: mssql 2005 btw..

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• Transpose a Collection

  - by Joseph Melettukunnel

  Hello, I've a list of different sizes of a T-Shirt, e.g. S, M, L. Since this might change for T-Shirts (sometimes we just have e.g. M, L), we load this into a List sizes. Since most DataGrids (xamDataGrid, WPF Toolkit DataGrid) need Properties for binding to the Columns, I'd like to transpose somehow my data. Does anyone have an idea how to do this? E.g. Instead of having List where Size { string sizeName, int available, int defect, int ordered} Avail. Defect Ordered [S] 1 2 3 [M] 1 2 3 [L] 1 2 3 I want an Object which has the Properties S, M, L containing the Values like this: [S] [M] [L] Avail. 1 2 3 Defect 1 2 3 Ordered 1 2 3 The problem here is that I don't know how many sizes will be available for the tshirt, it might be 3, 4, or 10. Thanks for any help Cheers PS: Here is a mockup of how the final grid should look like http://img39.imageshack.us/img39/9161/multirowspangridfixedel.png

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• How to scale MySQL with multiple machines?

  - by erotsppa

  I have a web app running LAMP. We recently have an increase in load and is now looking at solutions to scale. Scaling apache is pretty easy we are just going to have multiple multiple machines hosting it and round robin the incoming traffic. However, each instance of apache will talk with MySQL and eventually MySQL will be overloaded. How to scale MySQL across multiple machines in this setup? I have already looked at this but specifically we need the updates from the DB available immediately so I don't think replication is a good strategy here? Also hopefully this can be done with minimal code change. PS. We have around a 1:1 read-write ratio.

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• Why does forward declaration not work with classes?

  - by eSKay

  int main() { B bb; //does not compile (neither does class B bb;) C cc; //does not compile struct t tt; //compiles class B {}; struct s { struct t * pt; }; //compiles struct t { struct s * ps; }; return 0; } class C {}; I just modified the example given here. Why is that the struct forward declarations work but not the class forward declarations? Does it have something to do with the namespaces - tag namespace and typedef namespace? I know that the structure definitions without typedefs go to tag namespace. Structures are just classes with all public members. So, I expect them to behave similarly.

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• popen fails with "sh: <command>: not found"

  - by smallmeans

  I'm developing a server application and I recently encountered this wierd error on a testing server (Debian Squeeze). Every executable I pass to popen fails with a msg: sh: sort: not found // happens to any command This happens regardless whether I point to the full path returned by "type" or keep it short . As mentioned earlier, this happens at only one testing environment, to add confusion, am running the same OS and had no problem whatsoever. Popen is apparently using sh to execute commands, but if I run the same command thru the prompt (bash or sh), everything's fine Thanks in advance (PS: even tried Python os.popen just to nail this head scratcher, and it works!) Edit this is a simple call that fails: $command="tail -10 myfile"; $handle = popen($command.' 2>&1','r'); if($handle){ while (!feof($handle)){ ....//process buffer } } returns: sh: tail: not found

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• Android Context.bindService always returns false and ServiceConnection object is never triggered

  - by mosfet

  I have followed the Local Service example provided by Google, but my Context::bindService(...) always returns false and there is ServiceConnection::onServiceConnected is also never called. I understand that Context::bindService() returns immediately, but my ServiceConnection object is never triggered. I don't know if these apply My activity is running inside a tabHost and I was wondering if that can affect service binding in any way. The Service itself may have a problem, but I can call start service to the same service with the same Intent and it works as expected. Does anyone have experience with this? Please help me out. Thanks, P.S. I am targeting Android 1.6

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• shell script redirect output

  - by Andy

  I have a shell script to monitor process due to preventing the process closed. If the process is closed, that script will restart it. BTW, when the system starts, the crontab will run the script automatically. How can I get the output of the process which started by the shell script? #!/bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH while : do if [ -z "$(ps -ef | grep -v grep | grep 225.0.6.4)" ]; then date +"%m-%d-%y %T" >> /home/andy/log/stream.log echo "225.0.6.4 - 103 not worked and restart process" >> /home/andy/log/stream.log echo "225.0.6.4 - 103 not worked and restart process" /usr/bin/tzap -a 1 -c /home/andy/channels.conf -o - -r -p "D" | /home/andy/ffmpeg -f mpegts -i pipe:0 -c:v libx264 -preset medium -crf 23 -bufsize 3000K -minrate 1200k -maxrate 1200k -pix_fmt yuv420p -g 50 -s 1024x768 -acodec libmp3lame -b:a 128k -ac 2 -ar 44100 -f mpegts udp://225.0.6.4:50000 & fi sleep 1 done

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• How to benchmark apache/nginx setup

  - by Saif Bechan

  I am planning to setup nginx as reverse proxy. I will have apache to deliver my dynamic content, and nginx will deliver the static content. My configuration i have now is just Apache with fastCGI. This gives me no configuration problems and runs great. After I have set up nginx I want to run some benchmarks to see if I really got some performance increases, else i will switch back. Does anyone know how I can benchmark this type of setup? Or maybe someone did this already and have some canned results, I will be glad to hear them. PS. I know this is more a serverfault type of question, but i have seen numerous posts about apache and nginx so i thought i give it a try

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• Virtual Mice in C#

  - by jameshong

  Hi guys, Is there anything that we could do for implementing VIRTUAL MICE? I mean, I want to have multiple mice within the whole OS, but they must be all VIRTUAL (I'm not talking about the applications that serve multiple mice driver for PS/2 or USB mice or Microsoft's MultiPoint Mouse SDK.) It is like creating two objects: Mouse mouse1, mouse2; and using them like: mouse1.mouse_event(...); mouse2.mouse_event(...); having a CURSOR on the screen is NOT IMPORTANT. I only need the action (MOUSE DOWN, MOVE, UP for each but separated) and the important thing is that these VIRTUAL MICE should work together, at the same time, click or down-move action with different coordinates(x,y).

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• Shell script [Expected end of line, etc. but found unknown token]

  - by rockinthesixstring

  I'm trying to build a Synergy AutoStart script as per this article, the shell is giving me the error Syntax Error Expected end of line, etc. but found unknown token Here is the script I'm working on... #!/bin/sh . /etc/rc.common run=(/usr/local/bin/synergyc -n $(hostname -s) -1 -f 192.168.0.108) KeepAlive () { proc=${1##*/} while [ -x "$1" ] do if ! ps axco command | grep -q "^${proc}\$" then "$@" fi sleep 3 done } StartService () { ConsoleMessage "Starting Synergy" KeepAlive "${run[@]}" & } StopService () { return 0 } RestartService () { return 0 } RunService "$1" And when the error is thrown, the "period" is highlighted on this line . /etc/rc.common Is there something I'm missing here?

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• JSON webservice response compression in IIS 7

  - by denisioru

  Hello! I have trouble with JSON response compression. I look to response headers after uploading website to production server (Windows 2008, IIS 7) and found uncompressed response. Turning on "Enabled static compression" and ""Enable dynamic compression" in IIS control panel does not effect. ASPX pages was responsed gzipped, but webservice response uncompressed. I looked to google, but no answer found about this trouble. Also, I try this http://stackoverflow.com/questions/2405595/json-ihttpmodule-compression way (and adding to web.config this module) - but this source is excellent working at development machine with ASP.NET development server (and have seven times response size reduced) and totally ignored at IIS7. How I can apply gzip compression to json responses from my webservice? Thanks. PS .NET 3.5

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• How to exit a WPF app programmatically?

  - by j-t-s

  Hi All In the few years I've been using C# (WINFORMS), I've never used WPF. But now I love WPF, but I don't know how the hell I am supposed to exit my application when the user clicks on the Exit menu item from the File menu. Can somone please help me out!? I DID google this, and guess what? For such a Simple? thing... Nothing related came up. Thanks P.S. I have tried: this.Dispose(); this.Exit(); Application.ShutDown(); Application.Exit(); Application.Dispose(); ... Among many others. Nothing works.

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• Pros and cons of programmatically enforcing foreign key than in database

  - by Jeffrey

  It is causing so much trouble in terms of development just by letting database enforcing foreign key. Especially during unit test I can’t drop table due to foreign key constrains, I need to create table in such an order that foreign key constrain warning won’t get triggered. In reality I don’t see too much point of letting database enforcing the foreign key constrains. If the application has been properly designed there should not be any manual database manipulation other than select queries. I just want to make sure that I am not digging myself into a hole by not having foreign key constrains in database and leaving it solely to the application’s responsibility. Am I missing anything? P.S. my real unit tests (not those that use mocking) will drop existing tables if the structure of underlying domain object has been modified.

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• Last byte missing when casting from varbinary to varchar

  - by xaxie

  I got the last byte losing when converting varbinary to varchar in some case. For example: DECLARE @binary varbinary(8000), @char varchar(8000) set @binary = 0x000082 set @char = CAST(@binary as varchar(8000)) select BinaryLength=DATALENGTH(@binary), CharLength=DATALENGTH(@char) The result is BinaryLength CharLength 3 2 The affected byte value is from 0x81 - 0xFE. The stranger thing is that if I use varchar(MAX) instead varchar(8000) when casting, there is no any problem. Could someone tell me the root cause of the issue? PS: I run the sql in MS SQL server 2008. Thanks!

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• Tips on deploying Ror

  - by notnoop

  How can I go about deploying a Rails app on a cluster of Amazon EC2 servers? Any recommended guides? I maintain a RoR app (currently hosted on Heroku) that uses a DB and DelayedJobs). The app has a large footprint, and needs to be distributed on a cluster most likely. Any tips would be appreciated. Are there Amazon AMIs that replicate some of Heroku's features (especially DJ)? P.S. I'm quite a Ruby newbie.

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• Custom view in ListView disappears while scrolling in Android

  - by troorl

  Hi. I wrote a simple custom view for rows in ListView. It works fine, but when I try to scroll the list, I see only white rows without content. And when scrolling is over, rows continue to show again. This is how I draw a custom view: @Override protected void onDraw(Canvas canvas) { if(poster != null) { canvas.drawBitmap(poster, padding, padding, paint); } canvas.drawText(title, 55 + padding, 16 + padding, paint); } Maybe I missed something? P.S. This is short screencast (400kb) http://dl.dropbox.com/u/190203/test.mpeg

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• google maps export driving directions to kml file - java geogoogle

  - by maiky

  Hi Sorry at first for my poor grammar. I am writing a program in Java using geogoogle (Google Geocoder Java API) http://geo-google.sourceforge.net/ I need from two specific points to get the walking directions between these points and also these info to be exported in a KML file. Do you know how can I do it from Java? Is there an API that I can use? Perhaps making a call from the java program to google and handle the result - but how can it be done? Thanks in advance. PS. Google gives this functionality as i saw here http://www.gringod.com/2008/02/26/save-google-maps-driving-directions/ but I need all these to be called from Java.

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