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  • Erubis block helper throwing error with concat

    - by DEfusion
    I have a couple of block helpers, here's a simple example of what I'm doing: def wrap_foo foo, &block data = capture(&block) content = " <div class=\"foo\" id=\"#{foo}\"> #{data} </div>" concat( content ) end I'm just trying out erubis and it's giving me the following error: You have a nil object when you didn't expect it! You might have expected an instance of Array. The error occurred while evaluating nil.<< Removing the call to concat removes the error but ends up with my wrapper not being rendered Using: Rails 2.3.5 Erubis 2.6.5 And tried this gem that helps Erubis (though 2.6.4) and Rails 2.3 play better together

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  • How can I vertically center an element with GWT?

    - by Camille
    Perhaps I haven't been searching the right way but I cannot figure out for the life of me how to center an element using GWT Layout Panels. I'm using UiBinder and I've tried all panels that implement HasVerticalAlignment (DockPanel, HorizontalPanel, VerticalPanel). None of them seem to have any impact from setting vertical alignment (or even horizontal). I've made sure they're taking 100% width and height, inspected the resulting DOM layout from my browser and nothing seems to be changed from those properties. The quick and dirty fix I've figured out is to create my own "CenterPanel" widget which basically is a wrapper around a HTMLPanel with a HTML table with a valign="middle" cell. However, this basically feels like a throwback to the classical css-layout middle centering problems. Surely GWT has something to do this that I've completely overlooked?

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  • Unix domain socket firewall

    - by lagab
    Hello, everyone. I've got a problem with my debian server. Probably there is some vulnerable script at my web-serser, which is running from www-data user. I also have samba with winbind installed, and samba is joined to windows domain. So, probably this vulnerable script allows hacker to bruteforce out domain controller through winbind unix domain socket. Actually I have lots of such lines at netstat -a output: unix 3 [ ] STREAM CONNECTED 509027 /var/run/samba/winbindd_privileged/pipe And our DC logs contain lots of recorded authentication attems from root or guest accounts. How can I restrict my apaches access to winbind? I had an idea to use some kind of firewall for IPC sockets. Is it possible?

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  • How to insert/update multiple record into SQLite database in a single query.

    - by TuanCM
    Hi Guy. Is it possible to insert/update multiple record in SQLite database using EGODatabase wrapper. If I'm correct I think we can do it with FMDatabase by wrapping it between [db beginTransaction] and [db commit]. I wonder if we can do the same thing by using EGODatabase. Following is the code sample from FMDatabase project: [db beginTransaction]; i = 0; while (i++ < 20) { [db executeUpdate:@"insert into test (a, b, c, d, e) values (?, ?, ?, ?, ?)" , @"hi again'", // look! I put in a ', and I'm not escaping it! [NSString stringWithFormat:@"number %d", i], [NSNumber numberWithInt:i], [NSDate date], [NSNumber numberWithFloat:2.2f]]; } [db commit];

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  • 2 columns 100% height. Can the problem ever be solved in html markup???!!

    - by denja
    I'm in despair trying to draw this simple thing. Two columns stretching 100% vertically. Is this ever possible? here there are two tries <html> <head> <title>Columns</title> </head> <body> <style type="text/css"> .wrapper {font-size:900px; width:1200px; margin:0 auto; } .col1 { width:600px; height:100%; float:left; background:#f00; } .col2 { width:600px; height:100%; float:left; background:#00f; } </style> <div class="wrapper"> <div class="col1"> C o l u m n 1 </div> <div class="col2"> C ol u m n 2 </div> </div> </body> </html> and <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"> <head> <title>2 Column CSS Demo - Equal Height Columns with Cross-Browser CSS</title> <style media="screen" type="text/css"> /* <!-- */ *{ margin:0; padding:0; } html { background-color: #ccc; height: 100%; } body { background-color: white; width: 600px; margin: 0 auto; height:100%; position: relative; border-left: 1px solid #888; border-right: 2px solid black; } #footer { clear:both; width:100%; height:0px;font-size:0px; } #container2 { clear:left; float:left; width:600px; overflow:hidden; background:#ffa7a7; } #container1 { float:left; width:600px; position:relative; right:200px; background:#fff689; } #col1 { float:left; width:400px; position:relative; left:200px; overflow:hidden; } #col2 { float:left; width:200px; position:relative; left:200px; overflow:hidden; } /* --> */ </style> </head> <body> <div id="container2"> <div id="container1"> <div id="col1"> aaaa a a a a a a a a a aa aa a a a a a a a a aa aa a a a a a a a a aa aa a a a a a a a aa a a a a aa aa a a a a a a a a aa aa a a a a a a a a aa aa a a a a aa a a a a aa aa a </div> <div id="col2"> fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn v </div> </div> </div> <div id="footer"> &nbsp; </div> </body>

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  • ldapsearch and vcard creation

    - by Aaron Hoffman
    I'm using openldap on Mac OS X Server 10.6 and need to generate a vcard for all the users in a given group. By using the ldapsearch I can list all the memberUid's for all users in that group. I found a perl script (Advanced LDAP Search or ALS) that was written by someone that will generate the vcard easily. ALS can be found here http://www.ldapman.org/tools/als.gz So what I need to do is create a wrapper script (in python or perl) that will effectively loop through the memberUid's and run the ALS command to create the vcard and append it to the file. This command provides the memberUid's: ldapsearch -x -b 'dc=ldap,dc=server,dc=com' '(cn=testgroup)' Then running ALS gives the vcard: als -b dc=ldap,dc=server,dc=com -V uid=aaronh > vcardlist.vcf If it's easier to do this using Perl since ALS is already using it that would be fine. I've done more work in python but I'm open to suggestions. Thanks in advance, Aaron

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  • vPopmail / xinetd.

    - by Lorren Biffin
    I'm attempting to setup vpopmail on my CentOS server (Media Temple). Everything is working like a charm, with the exception that I cannot login to the server from any pop3 client. Upon trying to login I get the following error: Sending of password did not succeed. Mail server mail.(mydomain).com responded: Login failed. I'm running qmail (of course) with xinetd (not tcpserver). I've placed a file called pop3 into the folder /etc/xinetd.d with the content: service pop3 { disable = no socket_type = stream protocol = tcp wait = no user = root server = /var/qmail/bin/qmail-popup server_args = mail.(mydomain).com /home/vpopmail/bin/vchkpw /var/qmail/bin/qmail-pop3d Maildir log_type = FILE /var/log/xinetd.log log_on_success = HOST log_on_failure = HOST RECORD } Can anybody offer any guidance here? I've been unsuccessfully trying to make this happen for over a week.

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  • shared_ptr requires complete type; cannot use it with lua_State*

    - by topright
    Hello! I'm writing a C++/OOP wrapper for Lua. My code is: class LuaState { boost::shared_ptr<lua_State> L; LuaState(): L( luaL_newstate(), LuaState::CustomDeleter ) { } } The problem is lua_State is incomplete type and shared_ptr constructor requires complete type. And I need safe pointer sharing. (Funny thing boost docs say most functions do not require complete type, but constructor requires, so there is no way of using it. http://www.boost.org/doc/libs/1_42_0/libs/smart_ptr/smart_ptr.htm) Can can I solve this? Thank you.

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  • How to read custom file properties in c#

    - by Randy Gamage
    I'm looking for a way to read document properties in C#. I've heard about dsofile.dll, but it seems like an old COM wrapper, and was wondering if there is something more modern for the .NET framework/C#. What I'm actually reading is not an office document file, but a Solidworks .SLDDRW file, that has Custom properties. You can view and change these in Windows Explorer by right-clicking on the file, and going to the Properties window, Custom tab. Anyone know how to read these custom properties in C# / .NET 3.5? Thanks!

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  • How can I safely raise events in an AsyncCallback?

    - by cyclotis04
    I'm writing a wrapper class around a TcpClient which raises an event when data arrives. I'm using BeginRead and EndRead, but when the parent form handles the event, it's not running on the UI thread. I do I need to use delegates and pass the context into the callback? I thought that callbacks were a way to avoid this... void ReadCallback(IAsyncResult ar) { int length = _tcpClient.GetStream().EndRead(ar); _stringBuilder.Append(ByteArrayToString(_buffer, length)); BeginRead(); OnStringArrival(EventArgs.Empty); }

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  • How to calculate bandwidth limits per user on WiFi network

    - by Lars
    A typical 802.11g access point can provide around 25 Mbps of bandwidth. How is the bandwidth shared among the users? Furthermore, how many users can be served by a single access point using 802.11g in an environment with low interference, and average web activity from the users? The goal is to use bandwidth limitation to avoid starvation for some users in case some of the users start to download a file or stream HD video or some other bandwidth intensive activity. Can someone break down the math on this?

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  • PHPDelicious - Fail to Connect to Delicious

    - by Meander365
    phpdelicious (http://www.phpdelicious.com/) is a wrapper class for pulling in your delicious bookmarks using php. But I can't get it to work. Here's my code - my index.php: <?php require('php-delicious.inc.php'); define('DELICIOUS_USER', 'my-user-name-here'); define('DELICIOUS_PASS', 'my-password-here'); $oDelicious = new PhpDelicious(DELICIOUS_USER, DELICIOUS_PASS); ?> <?php if ($aPosts = $oDelicious->GetAllPosts()) { foreach ($aPosts as $aPost) { echo '<a href="'.$aPost['url'].'">'.$aPost['desc'].'</a>'; echo $aPost['notes']; echo $aPost['updated']; } } else { echo $oDelicious->LastErrorString(); } ?> But I get this error : Notice: Use of undefined constant CACHE_PATH - assumed 'CACHE_PATH' in C:\wamp\www\testing\cache.inc.php on line 44 Connection to del.icio.us failed. Any ideas?

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  • NHibernate session management in ASP.NET MVC

    - by Kevin Pang
    I am currently playing around with the HybridSessionBuilder class found on Jeffrey Palermo's blog post: http://jeffreypalermo.com/blog/use-this-nhibernate-wrapper-to-keep-your-repository-classes-simple/ Using this class, my repository looks like this: public class UserRepository : IUserRepository { private readonly ISessionBuilder _sessionBuilder; public UserRepository(ISessionBuilder sessionBuilder) { _sessionBuilder = sessionBuilder; } public User GetByID(string userID) { using (ISession session = _sessionBuilder.GetSession()) { return session.Get<User>(userID); } } } Is this the best way to go about managing the NHibernate session / factory? I've heard things about Unit of Work and creating a session per web request and flushing it at the end. From what I can tell, my current implementation isn't doing any of this. It is basically relying on the Repository to grab the session from the session factory and use it to run the queries. Are there any pitfalls to doing database access this way?

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  • Recommendation for serial communications in Access 2007

    - by bglenn
    I need to communicate with a bar code scanner connected over a serial port in Microsoft Access. In older versions of Access I was able to use a wrapper around MSCOMM32.ocx that no longer seems to work. I can't use wedge communication because I need to use ACK/NACK which is only supported through the RS232 interface and I need to send messages to the scanner, which is also only supported through the RS232 interface. Are there any controls in widespread use that support serial communication in Access 2007? EDIT: In case anyone comes across this, the newest version of MSCOMM32.ocx (I believe dated 3/09) still works fine as of this writing. It is older versions of MSCOMM32.ocx that do not work.

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  • Is there any graphics library in a higher level than OpenGL

    - by Turtle
    Hello, I am looking for a graphics library for 3D reconstruction research to develop my specific viewer based on some library. OpenGL seems in a low level and I have to remake the wheel everywhere. And I also tried VTK(visualization toolkit). However, it seems too abstract that I need to master many conceptions before I start. Is there any other graphics library? I prefer to program in python. So I would like the library has a python wrapper. I think something like O3D would be better. But O3D is for javascript and it seems that Google already stops the development.

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  • OpenAL - determine maximum sources

    - by Bill Kotsias
    Is there an API that allows you to define the maximum number of OpenAL "sources" allowed by the underlying sound hardware? Searching the internet, I found 2 recommendations : keep generating OpenAL sources till you get an error. However, there is a note in FreeSL (OpenAL wrapper) stating that this is "very bad and may even crash the library" assume you only have 16; why would anyone ever require more? (!) The second recommendation is even adopted by FreeSL. So, is there a common API to define the number of simultaneous "voices" supported? Thank you for your time, Bill

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  • Un-balanced network speed although using fiberoptic cable line

    - by Hoàng Long
    I'm not sure this is a right place to ask this question, but there's a strange thing that I don't quite sure what the reason is. My company has hired a fiberoptic cable line for network use (Wifi and cable through a router). But the strange thing is that, whenever someone view YouTube or listen stream music, then network speed for all the others become extremely slow. The download speed for that person is about 4-5 MB/s (or more), but others suffer. I'm still a newbie about networking. But I know there should be a solution. Could anyone tell me a way to stop this bad behavior? It's not possible for asking people not viewing YouTube, since that's part of their jobs. Any insights about this problem would be very welcome.

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  • Capturing a firewire video feed in Leopard on a G4

    - by Justin Dearing
    Hi, I have a powerbook G4 that I loaded up with Leopard (OSX 10.5). I don't have iMovie, since the Leopard version requires an intel mac. I have a Sony Digital 8 Camcorder with firewire and usb output. The usb output requires a special driver on windows. I don't think OSX will support it. I wish to capture the video stream from the camera on my G4. VLC does not support firewire capture on OSX, I don't want to pay for QT professional. I'm looking for a solution. I'd prefer open source, but I'd consider freeware and inexpensive for pay options. On a related note, if it can capture still frames, I have a related question.

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  • Video Streaming in Windows 7

    - by Adam Haile
    I just got Windows 7 up and running, and I turned on the new media streaming feature and added all of my music and videos to the corresponding libraries on my machine. I can then go to my XBox 360 and pull up my entire music collection with no problem, but when I try to find the videos it says there are none. Now, I DID NOT import any of the music or videos into Windows Media Player...I know you used to have to stream things this way. But why does it work with Music and not with Videos?? They are all in formats that I know both Windows 7 and the Xbox can play as well...I used to use TVersity and didn't have to even transcode the files to play them.

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  • CSS - Could use some pointers on correct positioning

    - by Kenny Bones
    Hi, I'm in need for some pointers on positioning. I've got this square which should be centered on the page. And with a logo and a logo font image kinda wrapped around the square. Now, I want this as dynamic as possible, because I use both the square and images elsewhere as well. So I can't really use stiff static positioning. This is the site: www.matkalenderen.no How should I do this? I want to logo to appear on the left side of the square. And the font to appear above the square. And the square itself should be centered. You probably get the picture :) Right now I've got a wrapper around everything, which is also centered.

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  • install red5 demos via installer or within war file manually

    - by dursunturan
    I'm using Ubuntu 10.10 and installed the red5-server package. I've also downloaded oflaDemo.war file from that address. First I tried to install the oflaDemo via installer, but I couldnt reach the goal. I see the .war file under the /tmp directory, I got stuck with this message: "This may take a couple minutes, please wait". After that, I put the downloaded war file into the /webapps directory and wait 10 minutes as mentioned in red5-common.xml. Unfortunately, nothing changed ... So I decided to extract war file manually. I did this: jar -xvf oflaDemo.war Ok, I see all of the unzipped content under the webapps directory, but how can I preview the demo via a web browser? I really need to make live stream via Red5. Please help me.

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  • Seeking webcam with own IP address

    - by Mawg
    I am not sure if this is the correct place to post, but I couldn't find anywhere better. I am looking for a webcam/movie cam and this site seems more addressed to still images, but ... I am looking for a small, rugged web-cam which can be hand-held or perhaps head-mounted (failing that I can settle for a tripod mount, but I need portability). It must have its own IP address so that anyone can view its video stream from a web browser. I would prefer 2 way voice communication too. Encryption of data is nice, as is compression (H.264). Maybe also remote control, like causing it to zoom from the browser. Does anyone have any suggestions, even suggestions of somewhere else to look? Thanks very much in advance.

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  • How to organize code using an optional assembly reference?

    - by apoorv020
    I am working on a project and want to optionally use an assembly if available. This assembly is only available on WS 2008 R2, and my ideal product whould be a common binary for both computers with and without the assembly. However, I'm primarily developing on a Windows 7 machine, where I cannot install the assembly. How can I organize my code so that I can (with minimum changes) build my code on a machine without the assembly and secondly, how do I ensure that I call the assembly functions only when it is present. (NOTE : The only use of the optional assembly is to instantiate a class in the library and repeatedly call a (single) function of the class, which returns a boolean. The assembly is fsrmlib, which exposes advanced file system management operations on WS08R2.) I'm currently thinking of writing a wrapper class, which will always return true if the assembly is not present. Is this the right way to go about doing this?

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  • How do I combine an unmanaged dll and a managed assembly into one file?

    - by Lasse V. Karlsen
    SQLite from PHX Software has combined a managed assembly (System.Data.SQLite) with an unmanaged dll (the SQLite 32- or 64-bit dll) into one file, and managed to link them together. How do I do this? Do I need to embed the managed assembly into the unmanaged dll, or vice versa? ie. my questions are: In which order do I need to do this? What tools or knowledge do I need in order to do this? How (if different) do I link to the exported functions from the unmanaged dll in my managed code? The reason I ask this is that I want to build a managed zLib wrapper. I know there is managed classes in .NET but from experience they're a bit limited (and a bit boneheaded in that they don't do proper buffering), so I'd like to create my own copy, also because I want to learn how to do this. So does anyone know what I need to do and how?

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  • How to auto-restart a python script on fail?

    - by norm
    This post describes how to keep a child process alive in a BASH script: http://stackoverflow.com/questions/696839/how-do-i-write-a-bash-script-to-restart-a-process-if-it-dies This worked great for calling another BASH script. However, I tried executing something similar where the child process is a Python script: #!/bin/bash PYTHON=/usr/bin/python2.6 function myprocess { $PYTHON daemon.py start } NOW=$(date +"%b-%d-%y") until myprocess; do echo "$NOW Prog crashed. Restarting..." >> error.txt sleep 1 done Now the behaviour is completely different. It seems the python script is no longer a child of of the bash script but seems to have 'taken over' the BASH scripts PID - so there is no longer a BASH wrapper round the called script...why?

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