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  • wxHaskell on OS X

    - by Bill
    I want to use wxHaskell on OS X (Snow Leopard, MacBook Pro). I was able to install the library successfully and the script below: module Main where import Graphics.UI.WX main :: IO () main = start hello hello :: IO () hello = do f <- frame [text := "Hello!"] quit <- button f [text := "Quit", on command := close f] set f [layout := widget quit] does result in a window being displayed with a single button, as specified. However, nothing happens when I click the button - I don't even get the visual response of the button turning blue to indicate that it's been depressed (haha, no pun intended). I've heard that you have to run a package called "macosx-app" on wxHaskell binaries to get them to run, but I can't find this anywhere. It's not on my machine or (as far as I can tell) in the WX or wxHaskell distros. Anyone know what I need to do to get this to work?

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  • Git pull error: unable to create temporary sha1 filename

    - by gnus.es
    Hi everyone, I've got a small git repo setup with the only real purpose to be able to develop locally on several machines (work, home, laptop). Thus I have one branch and I commit/push once I leave a computer, pull once I sit down at the next. Has worked fine, up to now that is. Now when I pull on my 'live test' machine, I get the following: remote: Counting objects: 38, done. remote: Compressiremote: ng objects: 100% (20/20), done. remote: Total 20 (delta 17), reused 0 (delta 0) error: unable to create temporary sha1 filename .git/objects/ed: File exists fatal: failed to write object fatal: unpack-objects failed Searching around the net the only real answer I could find was the following: http://marc.info/?l=git&m=122720741928774&w=2 which basically states that this is a bogus error that's on top of the pile and thus says nothing about what really is wrong. Where do I go from here to find out what is wrong? Edit: Removed the local copy and re-cloned

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  • atlbase.h not found when using Visual C++ Express 2010

    - by hcwang
    So I tried moving my project to Visual C++ Express 2010 on Windows 7 from a previous version on Windows XP. I got all sorts of errors where atlbase.h was not found. This isn't so much a question but I wanted to document what my resolution was for others. Copied the following PlatformSDK files from my previous install and put them on my Windows 7 machine. PlatformSDK/include/atl PlatformSDK/include/mfc PlatformSDK/lib PlatformSDK/src/atl I then change the VC++ Directories in the project Properties to point to those directories. Include Directories- *include/atl *include/mfc Library Directories- *lib Source Directories- *src/atl Make a change to stdafx.h right after this line: #include "atlbase.h" add this line: extern CComModule _Module; Hopefully you're ready to go now! Probably not but perhaps you are well on your way.

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  • Override Java System.currentTimeMillis

    - by Mike Clark
    Is there a way, either in code or with JVM arguments, to override the current time, as presented via System.currentTimeMillis, other than manually changing the system clock on the host machine? A little background: We have a system that runs a number of accounting jobs that revolve much of their logic around the current date (ie 1st of the month, 1st of the year, etc) Unfortunately, a lot of the legacy code calls functions such as new Date() or Calendar.getInstance(), both of which eventually call down to System.currentTimeMillis. For testing purposes, right now, we are stuck with manually updating the system clock to manipulate what time and date the code thinks that the test is being run. So my question is: Is there a way to override what is returned by System.currentTimeMillis? For example, to tell the JVM to automatically add or subtract some offset before returning from that method? Thanks in advance!

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  • How many records can i store in a Sql server table before it's getting ugly?

    - by Michel
    Hi, i've been asked to do some performance tests for a new system. It is only just running with a few client, but as they expect to grow, these are the numbers i work with for my test: 200 clients, 4 years of data, and the data changes per.... 5 minutes. So for every 5 minutes for every client there is 1 record. That means 365*24*12 = 105.000 records per client per year, that means 80 milion records for my test. It has one FK to another table, one PK (uniqueidentifier) and one index on the clientID. Is this something SqlServer laughs about because it isn't scaring him, is this getting too much for one quad core 8 GB machine, is this on the edge, or..... Has anybody had any experience with these kind of numbers?

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  • JQuery post not working when moving web-app to a win server 2003

    - by karl
    I have build a webapplication using ASP.NET MVC and JQuery. On my local machine this works fine,but when moving it to a Windows server 2003 the JQuery method post stops working. I'm also using the load method and this works fine. function methodOne(id) { alert("debug1: <%= Url.Action( "MethodOne", "controller" ) + "/" %>" + id); $.post <%= Url.Action( "MethodOne", "controller" ) + "/" %>" + id, function(data) { alert("debug2"); ... } else { alert("Debugg: Add presentation to user failed"); } }); } The debug2 is never outputed. $('#panel').load("<%= Url.Action( "Method", "Controller" ) %"); Works fine.

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  • How to solve JavaScript origin problem with an application and static file server

    - by recipriversexclusion
    In a system that I'm building I want to serve Static files (static HTML pages and a lot of images), and Dynamic XML generated by my servlet. The dynamic XML is generated from my database (through Hibernate) and I use Restlets to serve it in response to API calls. I want to create a static file server (e.g. Apache) so that this does not interfere with the dynamic server traffic. Currently both servers need to run on the same machine. I've never done something like this before and this is where I'm stuck: The static HTML pages contain JavaScript that makes API calls to the dynamic server. However, since the two servers operate on different ports, I get stuck with the same origin problem. How can this be solved? As a bonus, if you can point me to any resources that explain how to create such a static/dynamic content serving system, I'll be happy. Thanks!

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  • Adding custom/new properties to any file regardless of type and extension e.g. setting 'Author' on a

    - by Vaibhav Garg
    I want the ability add properties and tags to a file (specifically ebook files and ebook related properties in Windows 7 but interested to go so for as many OSes as possible) For e.g. Example.txt or Example.doc or Example.epub should all store and carry properties like 'Author', 'Publication date', 'Tags' etc.. the properties should be stored with the file itself. Such that if it is transferred to another system it retains the properties (even if i need to install 'my app' to support this function on the other machine) How do I make this possible using .net (preferred) and what file system concepts should I learn to understand the underlying concepts and limitations to be able to implement this feature? Any application that already does this? Thank you

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  • usedefaultcredentials in order to call DirectoryEntry

    - by Copeleto
    Hi, I am working in a Login page and teh logic is like - try { DirectoryEntry LDAPLogin = new DirectoryEntry(ConfigurationSettings.AppSettings ["LDAPPath"].ToString(), Usuario, Txt_Contrasenia.Text.ToString()); if (LDAPLogin.NativeGuid != LDAPLogin.Name) ValidarGrupo(); } catch (Exception exc) { Label_Info.Text = "Sus credenciales no son validas: " + Usuario.ToString() + " " + exc.Message; } If the user enters the rights credentials I call a method ValidarGrupo that implements a lookup in the AD for a group of the user I woould like to replace the username and password with UseDefaultCredentials in order to avoid that the user has to enter the username and password and the Login pages use the credentials of the user that is login on the machine.

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  • IIS 7 Can't read data from ASP.Net application services tables

    - by vikp
    Hi, I'm working on deploying a web application written in C# with ASP.Net Application services databases. The application runs fine on the development machine. Windows Server 2003 has been built to test the application. The database has been scripted across using MS SQL Server GUI. ASP.Net application services tables were created using an utility. The connection strings are stored in the web.config and connectionStrings.config. The application connects to the database successfully, but then it times out after 10 seconds.

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  • Unable to update the snapshot view in clearcase on linux

    - by crystal
    Hi I am trying to create a new snapshot view on my machine and i am using the following procedure: creating the view using ct mkview -snapshot -tag testview -vws /home/store/testview.vws /home/view/testview here the view gets created but fails to register which i register using the ct update on this /home/view/testview location tried to change the configspec using ct edcs & but got error "cleartool: Error: Cannot get view info for current view: not a ClearCase object." explicitly modifying the config_spec using vi editor, and the updating the view ends up creating a log...but no files are copied :( Can someone please direct me as to where i am going wrong?

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  • Fastest way to deploy rails apps with Passenger

    - by yuval
    I am working on a Dreamhost server with Rails 2.3.5. Every time I make changes to a site, I have to ssh into the site, remove all the files, upload a zip file containing all the new files for the site, unzip that file, migrate the database, and go. Something tells me there's a faster way to deploy rails apps. I am using mac Time Machine to keep track of different versions of my applications. I know git tracks files, but I don't really know how to work with it to deploy my applications, since passenger takes care of all the magic for me. What would be a faster way to deploy my applications (and avoid the downtime associated with my method when I delete all files on the server)? Thanks!

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  • Which langauge should i use for Artificial intelligence on web projects

    - by Mirage
    I have to do one project for my thesis involving Artificial intelligence, collaborative filtering and machine learning methods. I only know PHP/mysq/JS, and there is not much AI stuff examples in PHP. There are some books on AI on internet but they use Java , Python. Now I have to apply AI techniques on web application. Which language should i choose java or python. I searhed on internet that I can call java classes inside my php so that can help as as I am very good at php I have also seen that python can also be used with php as well So which way should I go and roughly how much it will take me to learn java I have done java basics but that was 6 years ago

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  • Creating a new project from a project skeleton using git

    - by asciitaxi
    In order to get a new django project up and running faster, I'd like to maintain a separate "project skeleton" on which I base all my new projects. It would be great if, as I improved the skeleton, I could bring those improvements into my active projects. How can I accomplish this with git? So, maybe in my remote git repository machine I would have 1 repo for each project and one for the skeleton? proj-A-repo proj-B-repo skeleton-repo If I want to create a new proj-C locally based on the skeleton, then push my local changes up to the remote server in a new repo called proj-C-repo, how might I do this? I've read through quite a bit of git documentation, but I'm confused about how to go about this. Do I need to clone the skeleton, or create an empty repo and then track a remote branch, or something else?

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  • Why the difference in speed?

    - by AngryHacker
    Consider this code: function Foo(ds as OtherDLL.BaseObj) dim lngRowIndex as long dim lngColIndex as long for lngRowIndex = 1 to ubound(ds.Data, 2) for lngColIndex = 1 to ds.Columns.Count Debug.Print ds.Data(lngRowIndex, lngColIndex) next next end function OK, a little context. Parameter ds is of type OtherDLL.BaseObj which is defined in a referenced ActiveX DLL. ds.Data is a variant 2-dimensional array (one dimension carries the data, the other one carries the column index. ds.Columns is a Collection of columns in 'ds.Data`. Assuming there are at least 400 rows of data and 25 columns, this code takes about 15 seconds to run on my machine. Kind of unbelievable. However if I copy the variant array to a local variable, so: function Foo(ds as OtherDLL.BaseObj) dim lngRowIndex as long dim lngColIndex as long dim v as variant v = ds.Data for lngRowIndex = 1 to ubound(v, 2) for lngColIndex = 1 to ds.Columns.Count Debug.Print v(lngRowIndex, lngColIndex) next next end function the entire thing processes in barely any noticeable time (basically close to 0). Why?

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  • HTML Audio performance

    - by user1888309
    I'm working on HTML drum machine, and I`ve met some performance issues, rhythm start to break if BPM is higher than 110 but I'm expecting to make it work on BPM over 180. I guess that it can be related with format or codec of audio files, however it also maybe that my code is not very optimised (as I can see from JS CPU profiling it's not). So I'm expecting you guys give me some code review or some hints on optimisation. Although all similar projects I've found on internet didn't work good and maybe it's just restrictions of Audio API. By the way, it's very raw and sounds works only on Chrome under Mac OS, so any advise on audio encoding for web also would be great Project on Github pages Screenshot of Groove which breaks UPDATE Ok, I've found that I was encoding audio files incorrectly, after fixing that rhythm stopped breaking, and also it started working in Mozilla. But still there are issues on windows OS.

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  • How to ask database server for current datetime using entity framework?

    - by Levelbit
    I don't want for my current ModifeidDateTime to be machine time already server time. Every time I want to update or add a person to my datebase on SQL Server 2008 I want to fill ModifiedDateTime filed. It's not like I can change update query as with data adapter command when I work with dataset and to define for my ModifiedDateTime filed to be =GetDate(). I created stored function to retutn me a value of GetDate() method, but I have a problem to import procedure which returns values as int, string ... or no value at all, already just entity values as Person for example in my case. Why is that? Anyway, It would be of great help if you can provide me any solution that works to retrieve DateTime value from server.

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  • Starting a new process in a asp.net web service

    - by Deumber
    I have the following code: public void BeginConvert(object data) { ConverterData cObject = (ConverterData)data; string argument = string.Format("-i \"{0}\" -b {1} \"{2}\"", cObject.Source, compression, cObject.Destiny); Process converterProcess = new Process(); converterProcess.StartInfo.FileName = ffPath; converterProcess.StartInfo.Arguments = argument; converterProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; converterProcess.Start(); converterProcess.WaitForExit(); } I use it in a webservice, i start it in a new thread and it return exit code 1 (error, i'm trying to do a video convertion with ffmpeg library), i impersonate ASP.NET to use a local account with permissions to read and write files, when i run it in my machine running or debugging it works but know thta the web service is running in IIS doest'n. Could someone help me?

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  • Receving multiple multicast feeds on the same port - C, Linux

    - by Gigi
    I have an application that is receiving data from multiple multicast sources on the same port. I am able to receive the data. However, I am trying to account for statistics of each group (i.e. msgs received, bytes received) and all the data is getting mixed up. Does anyone know how to solved this problem? If I try to look at the sender's address, it is not the multicast address, but rather the IP of the sending machine. I am using the following socket options: struct ip_mreq mreq; mreq.imr_multiaddr.s_addr = inet_addr("224.1.2.3"); mreq.imr_interface.s_addr = INADDR_ANY; setsockopt(s, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)); and also: setsockopt(s, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(reuse)); I appreciate any help!!!

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  • PHP exec() and system() functions always return false in IIS

    - by Loftx
    Hi there, I'm trying to use the PHP exec() or system() (or any other similar function) to run a batch file, but I can't seem to get these to return anything. The simplest example I've seen is this, which outputs nothing: <?php echo system('dir'); ?> The script is running on a windows XP machine on IIS with PHP installed and I've also tried it on my shared hosting account running windows 2003 server/IIS. Can anyone suggest what I need to do to get this working, or provide any commands I can use for troubleshooting? Cheers, Tom

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  • Cannot use scp on Mac OS X

    - by Robert
    Hi all, when I try to copy any file with scp on Mac OS X Snow Leopard from another machine I get this error: scp [email protected]:/home/me/file.zip . Password: ... ---> Couldn't open /dev/null: Permission denied this is the output of "ls -l /dev/null": crw-rw-rw- 1 root wheel 3, 2 May 14 14:10 /dev/null I am in the group wheel, and even if I do "sudo scp..." it doesn't work. It's driving me crazy, do you have any suggestion? Thanx!

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  • Copying a massive databse for local ruby on rails development?

    - by tesmar
    Hi guys, There is a massive database (GB) that I am working with now and all of the previous development has been done on a slicehost slice. I am trying to get ready for more developers to come in and work so I need each person to be able to setup his own machine for development, which means potentially copying this database. Selecting only the first X rows in each table to cut size could be problematic for data consistency. Is there any way around this, or is a 1 hour download for each developer going to be necessary? And beyond that, what if I need to copy the production DB down for dev purposes in the future? Sincerely, Tyler

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  • java.io in debian

    - by Stig
    Hello, i try to compile a java program but in the import section of the code fails: import java.net.; import java.io.; import java.util.; import java.text.; import java.awt.; //import java.awt.image.; import java.awt.event.; //import java.awt.image.renderable.; import javax.swing.; import javax.swing.border.; //import javax.swing.border.EtchedBorder; //import javax.media.jai.; //import javax.media.jai.operator.; //import com.sun.media.jai.codec.; //import java.lang.reflect.; how can i fix the problem in a linux debian machine?. Thanks

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  • Why does use of H264 in sender/receiver pipelines introduce just HUGE delay?

    - by Serguey Zefirov
    When I try to create pipeline that uses H264 to transmit video, I get some enormous delay, up to 10 seconds to transmit video from my machine to... my machine! This is unacceptable for my goals and I'd like to consult StackOverflow over what I (or someone else) do wrong. I took pipelines from gstrtpbin documentation page and slightly modified them to use Speex: This is sender pipeline: #!/bin/sh gst-launch -v gstrtpbin name=rtpbin \ v4l2src ! ffmpegcolorspace ! ffenc_h263 ! rtph263ppay ! rtpbin.send_rtp_sink_0 \ rtpbin.send_rtp_src_0 ! udpsink host=127.0.0.1 port=5000 \ rtpbin.send_rtcp_src_0 ! udpsink host=127.0.0.1 port=5001 sync=false async=false \ udpsrc port=5005 ! rtpbin.recv_rtcp_sink_0 \ pulsesrc ! audioconvert ! audioresample ! audio/x-raw-int,rate=16000 ! \ speexenc bitrate=16000 ! rtpspeexpay ! rtpbin.send_rtp_sink_1 \ rtpbin.send_rtp_src_1 ! udpsink host=127.0.0.1 port=5002 \ rtpbin.send_rtcp_src_1 ! udpsink host=127.0.0.1 port=5003 sync=false async=false \ udpsrc port=5007 ! rtpbin.recv_rtcp_sink_1 Receiver pipeline: !/bin/sh gst-launch -v\ gstrtpbin name=rtpbin \ udpsrc caps="application/x-rtp,media=(string)video, clock-rate=(int)90000, encoding-name=(string)H263-1998" \ port=5000 ! rtpbin.recv_rtp_sink_0 \ rtpbin. ! rtph263pdepay ! ffdec_h263 ! xvimagesink \ udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0 \ rtpbin.send_rtcp_src_0 ! udpsink port=5005 sync=false async=false \ udpsrc caps="application/x-rtp,media=(string)audio, clock-rate=(int)16000, encoding-name=(string)SPEEX, encoding-params=(string)1, payload=(int)110" \ port=5002 ! rtpbin.recv_rtp_sink_1 \ rtpbin. ! rtpspeexdepay ! speexdec ! audioresample ! audioconvert ! alsasink \ udpsrc port=5003 ! rtpbin.recv_rtcp_sink_1 \ rtpbin.send_rtcp_src_1 ! udpsink host=127.0.0.1 port=5007 sync=false async=false Those pipelines, a combination of H263 and Speex, work fine enough. I snap my fingers near camera and micropohne and then I see movement and hear sound at the same time. Then I changed pipelines to use H264 along the video path. The sender becomes: #!/bin/sh gst-launch -v gstrtpbin name=rtpbin \ v4l2src ! ffmpegcolorspace ! x264enc bitrate=300 ! rtph264pay ! rtpbin.send_rtp_sink_0 \ rtpbin.send_rtp_src_0 ! udpsink host=127.0.0.1 port=5000 \ rtpbin.send_rtcp_src_0 ! udpsink host=127.0.0.1 port=5001 sync=false async=false \ udpsrc port=5005 ! rtpbin.recv_rtcp_sink_0 \ pulsesrc ! audioconvert ! audioresample ! audio/x-raw-int,rate=16000 ! \ speexenc bitrate=16000 ! rtpspeexpay ! rtpbin.send_rtp_sink_1 \ rtpbin.send_rtp_src_1 ! udpsink host=127.0.0.1 port=5002 \ rtpbin.send_rtcp_src_1 ! udpsink host=127.0.0.1 port=5003 sync=false async=false \ udpsrc port=5007 ! rtpbin.recv_rtcp_sink_1 And receiver becomes: #!/bin/sh gst-launch -v\ gstrtpbin name=rtpbin \ udpsrc caps="application/x-rtp,media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264" \ port=5000 ! rtpbin.recv_rtp_sink_0 \ rtpbin. ! rtph264depay ! ffdec_h264 ! xvimagesink \ udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0 \ rtpbin.send_rtcp_src_0 ! udpsink port=5005 sync=false async=false \ udpsrc caps="application/x-rtp,media=(string)audio, clock-rate=(int)16000, encoding-name=(string)SPEEX, encoding-params=(string)1, payload=(int)110" \ port=5002 ! rtpbin.recv_rtp_sink_1 \ rtpbin. ! rtpspeexdepay ! speexdec ! audioresample ! audioconvert ! alsasink \ udpsrc port=5003 ! rtpbin.recv_rtcp_sink_1 \ rtpbin.send_rtcp_src_1 ! udpsink host=127.0.0.1 port=5007 sync=false async=false This is what happen under Ubuntu 10.04. I didn't noticed such huge delays on Ubuntu 9.04 - the delays there was in range 2-3 seconds, AFAIR.

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  • MySQL ALTER TABLE on very large table - is it safe to run it?

    - by Timothy Mifsud
    I have a MySQL database with one particular MyISAM table of above 4 million rows. I update this table about once a week with about 2000 new rows. After updating, I then perform the following statement: ALTER TABLE x ORDER BY PK DESC i.e. I order the table in question by the primary key field in descending order. This has not given me any problems on my development machine (Windows with 3GB memory), but, even though 3 times I have tried it successfully on the production Linux server (with 512MB RAM - and achieving the resulted sorted table in about 6 minutes each time), the last time I tried it I had to stop the query after about 30 minutes and rebuild the database from a backup. I have started to wonder whether a 512MB server can cope with that statement (on such a large table) as I have read that a temporary table is created to perform the ALTER TABLE command?! And, if it can be safely run, what should be the expected time for the alteration of the table? Thanks in advance, Tim

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