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• Flash to PHP base64 encode/decode

  - by Gus

  I'm using AS3 to base64 encode a JPG and pass it to Javascript. I'm attempting to use AJAX to pass that base64 encoded string to PHP and have PHP decode it. (I know I could send it back to Flash and Flash could decode it and send it to PHP, but I'm trying to eliminate the need for Flash on the decoding end). It appears that AS3's encodeToBase64String() function and and PHP's base64_decode() function do not use the same algorithm, as PHP evaluates it as a base64 encoded object, but does not seem to output it properly. Is there a way to rectify this problem? Note: Please no posts about not needing Javascript. Javascript is a necessary step for reasons not detailed here.

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• How to mark posts as edited?

  - by user156814

  I would like to have questions marked as "Edited", but I dont know what the best way to do this would be. Users post a question, people answer/comment on the question, and if necessary the user edits/updates the question (just like SO). I would like to note that the user edited the question, but I'm not sure of the best way to do this. I was going to add a last_edited column in the table (because thats all thats really important to me), but I'm not sure if I should just split the edit times (and whatever else) into another table and record everytime the question gets edited.

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• Write a MAT file without using matlab headers and libraries.

  - by YuppieNetworking

  Hello all, I have some data that I would like to save to a MAT file (version 4 or 5, or any version, for that matter). The catch: I wanted to do this without using matlab libraries, since this code will not necessary run in a machine with matlab. My program uses Java and C++, so any existing library in those languages that achieves this could help me out... I did some research but did not find anything in Java/C++. However, I found that scipy on python achieves this with mio4.py or mio5.py. I thought about implementing this on java or C++, but it seems a bit out of my time schedule. So the question is: is there any libraries in Java or C/C++ that permits saving MAT files without using Matlab libraries? Thanks a lot

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• Django resizing an image pre save using PIL

  - by Ed

  Ugh, I hate having to ask a question on such a common feature, but. . . I'm using an ImageField in a form to upload a photo to S3. I want to resize the image before it is uploaded to S3. I'm trying to use PIL to test the dimensions and resize if necessary. The Image.open() part is throwing me though. It wants a filepath, and the ImageField from the form is only returning the actual file and filename. How can I resize the image before it's saved to S3? Before we get to this point, I'm not using sorl because I believe sorl is compatible with models using ImageFields. But the model associated with the saved S3 images holds just the url of the image on S3 as opposed to using ImageFields.

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• jQTouch with PhoneGap on webOS

  - by Steve Nay

  I'm writing an application in PhoneGap that I want to run on iOS, Android, and webOS. jQTouch plays nice with everything on iOS and Android, but not webOS. Since the webOS Mojo framework is based on Prototype (which uses the $ variable), it's necessary to use jQuery in noConflict mode. I can handle that much. However, the problem is that I also want to use the jQTouch plugin. The jqtouch.js file uses $ throughout, causing JavaScript errors when that file is loaded. Is there a way to run the jQTouch plugin (or any plugin for that matter) in my PhoneGap application without interfering with Prototype?

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• ClearCase: Versioning at file level

  - by Naveen

  Hi, I have a perculier problem about how to maintain a clearcase project. This project is a xml schema repository where each schema has a version. This repository is common and is used by all the apps in the enterprise. From clearcase prespective the project has a single component. Now the apps can be using different versions of the schema(s). So we are trying to figureout a way to setup the project in such way that a project can have a baseline of what versions of these files are included in a build. The only way we know of how to do this is to create a component for each schema or group of schemas and create a stream for each app to include the components they use. But that would result in too many components. Has anyone dealth with something like this before? We are prepared to restructre the whole project if necessary, so we are open to any idea. Thans for the help.

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• javascript eval backslash in window NT path problem

  - by Hammad Tariq

  I am experiencing a classic JS case (in my opinion) but after a lot of googling, still not able to find a solution. Backslash is considered as a escape character in JS but what you need when you need to pass windows path from the JS and print it? I am using eval because my java applet is executing the code and placing bits when it has a string to evaluate. That's why eval is necessary, however I have made an example which is below: <div id="mainTabs"></div> <script> var s = "document.getElementById('mainTabs').innerHTML='\\C\ganye\file.doc'"; eval(s); </script> I tried double backslashes, not working, if anyone could help me get around this with as less hassle as possible, I will feel grateful.

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• Handling database failover for Rails applications on FreeBSD

  - by bianster

  I'm working on implementing database (Postgresql) failover for a Rails app that runs with Passenger/FreeBSD. Due to certain constraints regarding the server OS, it's necessary to continue using FreeBSD (as opposed to say, Ubuntu). I'm finding it to be quite a challenge to have failover handled within the Rails application, by way of a customised database adapter due to the fact that this application will be load-balanced between several webservers, and the multiple Rails processes that Passenger spawned in each webserver. I previously looked at setting up Pacemaker/Corosync to manage database server failover on a common IP but unfortunately I wasn't able to get past building the packages on FreeBSD. It does work rather well on Ubuntu 10.04 but I'm not likely to be able to use Ubuntu due to the OS constraints. I'm considering a custom witness daemon that simply pings the primary DB server, and this witness daemon switches all the webservers to the standby DB server when the primary becomes uncontactable (permanently/temporarily), to avoid split-brain. Though I would really like to know if there is a way to get Pacemaker(or something similar) to do the switch on FreeBSD.

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• Minimum permissions to COM Object to Instantiate running as LocalService

  - by Paul Farry

  I'm writing a .NET Service that creates a COM object. If I run the Service as the Logged on user (everything is fine). If I run the Service as LocalSystem, everything is fine. If I run the Service as LocalService, then I get an AccessDeniedException when trying to instantiate the COM Object. I've come up with the following block to grant the necessary permissions and it appears to work correctly, but I wanted to make sure I wasn't missing something regarding the COM rules. Private Sub SetAccessToRockeyRegistry() Using reg As RegistryKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey("CLSID\{EE0680D3-AAC3-446B-AFD7-F9DE2D3E28FB}", True) Dim sec As RegistrySecurity sec = reg.GetAccessControl Dim ar As RegistryAccessRule Dim sid As SecurityIdentifier sid = New SecurityIdentifier(WellKnownSidType.LocalServiceSid, Nothing) ar = New RegistryAccessRule(sid, RegistryRights.ReadKey Or RegistryRights.EnumerateSubKeys Or RegistryRights.QueryValues, AccessControlType.Allow) sec.AddAccessRule(ar) ar = New RegistryAccessRule(sid, RegistryRights.ReadKey Or RegistryRights.EnumerateSubKeys Or RegistryRights.QueryValues, _ InheritanceFlags.ObjectInherit Or InheritanceFlags.ContainerInherit, PropagationFlags.InheritOnly Or PropagationFlags.NoPropagateInherit, AccessControlType.Allow) sec.AddAccessRule(ar) reg.SetAccessControl(sec) End Using End Sub

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• Minimum permissions to allow COM Object to be Instantiated when running as LocalService

  - by Paul Farry

  I'm writing a .NET Service that creates a COM object. If I run the Service as the Logged on user (everything is fine). If I run the Service as LocalSystem, everything is fine. If I run the Service as LocalService, then I get an AccessDeniedException when trying to instantiate the COM Object. I've come up with the following block to grant the necessary permissions and it appears to work correctly, but I wanted to make sure I wasn't missing something regarding the COM rules. Private Sub SetAccessToRockeyRegistry() Using reg As RegistryKey = Microsoft.Win32.Registry.ClassesRoot.OpenSubKey("CLSID\{EE0680D3-AAC3-446B-AFD7-F9DE2D3E28FB}", True) Dim sec As RegistrySecurity sec = reg.GetAccessControl Dim ar As RegistryAccessRule Dim sid As SecurityIdentifier sid = New SecurityIdentifier(WellKnownSidType.LocalServiceSid, Nothing) ar = New RegistryAccessRule(sid, RegistryRights.ReadKey Or RegistryRights.EnumerateSubKeys Or RegistryRights.QueryValues, AccessControlType.Allow) sec.AddAccessRule(ar) ar = New RegistryAccessRule(sid, RegistryRights.ReadKey Or RegistryRights.EnumerateSubKeys Or RegistryRights.QueryValues, _ InheritanceFlags.ObjectInherit Or InheritanceFlags.ContainerInherit, PropagationFlags.InheritOnly Or PropagationFlags.NoPropagateInherit, AccessControlType.Allow) sec.AddAccessRule(ar) reg.SetAccessControl(sec) End Using End Sub

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• How to improve my Python regex syntax?

  - by FarmBoy

  I very new to Python, and fairly new to regex. (I have no Perl experience.) I am able to use regular expressions in a way that works, but I'm not sure that my code is particularly Pythonic or consise. For example, If I wanted to read in a text file and print out text that appears directly between the words 'foo' and 'bar' in each line (presuming this occurred one or zero times a line) I would write the following: fileList = open(inFile, 'r') pattern = re.compile(r'(foo)(.*)(bar)') for line in fileList: result = pattern.search(line) if (result != None): print result.groups()[1] Is there a better way? The if is necessary to avoid calling groups() on None. But I suspect there is a more concise way to obtain the matching String when there is one, without throwing errors when there isn't. I'm not hoping for Perl-like unreadability. I just want to accomplish this common task in the commonest and simplest way.

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• Flash Player 10.1 for Flash Professional CS4 playerglobal.swc?

  - by TheDarkIn1978

  Adobe released projector, debugger and plugin for Flash 10.1 yesterday. on my Mac i've installed the standalone player and debugger in Adobe Flash CS4/Players/ and Adobe Flash CS4/Players/Debug respectively. however, i think i need to download the globalplayer.swc for 10.1 so that Flash CS4 IDE is directed to use the new players. i've searched but i could only find the globalplayer.swc that was released during the 10.1 betas, and i'm not sure if that's the .swc i should use for the final 10.1 release. Adobe's site doesn't mention anything about replacing the .swc to use 10.1 in CS4, so i'm not sure if it's necessary. i've tried creating actionscripts to include flash.ui.Multitouch and flashx.textLayout and neither can be found. i have no idea how to make Flash Professional CS4 use the new APIs available in Flash Player 10.1 suggestions?

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• How to use Speech 2 Text in Microsoft Surface

  - by Roflcoptr

  I'd like to use some speech 2 text in my microsoft surface application. I saw that it is possible, but I don't really know where to start. Is there any framework/library available, or a code snippet, or a tutorial?? I don't even know exactly what i should google for ;) ===EDIT=== I read that it is necessary to use a grammar to recognize words. So if I want to proceed free text, is there a predefined grammar for the english language? Or is it a better choice to don't use speech2text but just audio files instead?

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• Advantages of Thread pooling in embedded systems

  - by Microkernel

  I am looking at the advantages of threadpooling design pattern in Embedded systems. I have listed few advantages, please go through them, comment and please suggest any other possible advantages that I am missing. Scalability in systems like ucos-2 where there is limit on number of threads. Increasing capability of any task when necessary like Garbage collection (say in normal systems if garbage collection is running under one task, its not possible to speed it up, but in threadpooling we can easily speed it up). Can set limit on the max system load. Please suggest if I am missing anything.

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• QTableWidget signal cellChanged(): distinguish between user input and chage by routines

  - by crabman

  i am using PyQt but my question is a general Qt one: I have a QTableWidget that is set up by the function updateTable. It writes the data from DATASET to the table when it is called. Unfortunately this causes my QTableWidget to emit the signal cellChanged() for every cell. The signal cellChanged() is connected to a function on_tableWidget_cellChanged that reads the contents of the changed cell and writes it back to DATASET. This is necessary to allow the user to change the data manually. So everytime the table is updated, its contents are written back to DATASET. Is there a way to distinguish if the cell was changed by the user or by updateTable? i thought of disconnecting on_tableWidget_cellChanged by updateTable temporarily but that seems to be a little dirty.

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• Jersey, Apache HTTPD, and javax.annotation.security usage

  - by Nick Klauer

  So I'm having a heck of a time trying to piece together what I think is a pretty simple implementation. This is very similar to another StackOverflow question only I can't leverage Tomcat to handle role based authentication. I have an Apache httpd server in front of my app that handles authentication and then passes LDAP roles to a Jersey service through Headers. I've created a servlet filter to parse the header and tease out the roles the request came from, which works fine globally to the app, but isn't fine-grained enough to dictate what an Admin could do that a User could not. I'm thinking I could use the javax.annotation.security annotations that JAX-RS supports, but I don't know how to take what I've parsed out using a servlet filter to set or instantiate the SecurityContext necessary for the roles @RolesAllowed.

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• Using a checkbox input on a form to send the form data to different email addresses

  - by Cody Thomas

  I am building a form for a client. Here is the rundown. The form will be used as a request to have a staff member contact the person filling out the form. However, there is a list of staff members that will contact them depending on what the subject matter is. So, I want to create a checkbox input section on the form with each staff person's email address attached to a corresponding checkbox. So, the person filling out the form can check only the staff people necessary for their needs. Finally, when the person clicks "submit", the form will be emailed to only the staff members who were checked in the form. I'm at a loss of how to set this up.

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• Is there any good programming books forum out there?

  - by prosseek

  I always feel the internet forums are a good way to gain knowledge - asking questions and get some answers from everybody, and SO is a great example. But when I get questions reading some programming books, I wonder to whom can I ask the questions. O'Reilly and PragProg have their own book forums, and some authors open their own forums. Or, we might be able to send an email to the author if that is absolutely necessary. Is there any good forum on programming books? Can you share any good programming book forums on the web? Or, is SO the best place to ask some questions in programming books? I found some book reading forums, but not programming books.

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• Backbone.js not registering Model.hasChanged event

  - by Brian M. Hunt

  Hello, I'm trying to get a View in Backbone.js to save when there's a 'change' event if (and only if) the data has changed. Long story short, I've a 'change' event set on the View that calls this: function changed_event() { log.debug("Before: " + this.model.get('name')) // not 'contrived!' this.model.set({'name': 'contrived!'}); log.debug("After: " + this.model.get('name')) // 'contrived!' if (this.model.hasChanged()) { alert("This is never called."); } } I'd like to know why the model.hasChanged() is false when clearly the model has been changed. I'm not sure what other information is necessary, but if there is more information that may be helpful please comment and I'll elaborate. Thank you for reading.

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• SSIS DTSX File Repair Tool

  - by Eric Ness

  I'm working with an SSIS 2005 file that crashes Visual Studio 2005 on my workstation. This happens when I open the data flow diagram and Visual Studio attempts to validate the package. I can open it successfully on another computer though. The package itself is fairly simple and only has two control flow tasks and maybe ten tasks in the data flow. I'm wondering if there is a tool that goes through the XML in the dtsx file and repairs any issues or if this is even necessary. The dtsx file is about 171 kB and it seems like there's a lot in it considering what a simple package it is.

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• How to run a PowerShell script?

  - by Pekka

  Guys and Gals, a really stupid question: How do I run a PowerShell script? I have a script named myscript.ps1 I have all the necessary frameworks installed I set that execution policy thing I have followed the instructions on this MSDN help page and am trying to run it like so: powershell.exe 'C:\my_path\yada_yada\run_import_script.ps1' (with or withot --noexit) which returns exactly nothing, except that the file name is output. No error, no message, nothing. Oh, when I add -noexit, the same thing happens but I remain within Powershell, and have to exit manually. The ps1 file is supposed to run a program, and return the error level dependant on that program's output. But I'm quite sure I'm not even getting there yet. What am I doing wrong?

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• Arguments On a Console eMbedded Visual C++ Application

  - by Nathan Campos

  I'm trying to develop a simple application that will read some files, targeted for Windows CE. For this I'm using Microsoft eMbedded Visual C++ 3. This program(that is for console) will be called like this: /Storage Card/Test coms file.cmss As you can see, file.cmss is the first argument, but on my main I have a condition to show the help(the normal, how to use the program) if the arguments are smaller than 2: if(argc < 2) { showhelp(); return 0; } But when I execute the program on the command-line of Windows CE(using all the necessary arguments) I got the showHelp() content. Then I've checked all the code, but it's entirelly correct. But I think that eVC++ don't use argc and argv[] for arguments, then I want some help on how to determine the arguments on it.

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• Synchronizing scroll positions for 2 WPF DataGrids

  - by Philipp Schmid

  I am trying to synchronize the horizontal scroll position of 2 WPF DataGrid controls. I am subscribing to the ScrollChanged event of the first DataGrid: <toolkit:DataGrid x:Name="SourceGrid" ScrollViewer.ScrollChanged="SourceGrid_ScrollChanged"> I have a second DataGrid: <toolkit:DataGrid x:Name="TargetGrid"> In the event handler I was attempting to use the IScrollInfo.SetHorizontalOffset, but alas, DataGrid doesn't expose IScrollInfo: private void SourceGrid_ScrollChanged(object sender, ScrollChangedEventArgs e) { ((IScrollInfo)TargetGrid).SetHorizontalOffset(e.HorizontalOffset); // cast to IScrollInfo fails } Is there another way to accomplish this? Or is there another element on TargetGrid that exposes the necessary IScrollInfo to achieve the synchronization of the scroll positions? BTW, I am using frozen columns, so I cannot wrap both DataGrid controls with ScrollViewers.

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• Hiding Row in DataGridView Very Slow

  - by Ed Schwehm

  I have a DataGridView in a Winforms app that has about 1000 rows (unbound) and 50 columns. Hiding a column takes a full 2 seconds. When I want to hide about half the rows, this becomes a problem. private void ShowRows(string match) { this.SuspendLayout(); foreach (DataGridViewRow row in uxMainList.Rows) { if (match == row.Cells["thisColumn"].Value.ToString())) { row.Visible = false; } else { row.Visible = true; } } this.ResumeLayout(); } I did some testing by adding by addingConsole.WriteLine(DateTime.Now)around the actions, androw.Visible = falseis definitely the slow bit. Am I missing something obvious, like setting IsReallySlow = false? Or do I have to go ahead and enable Virtual Mode and code up the necessary events?

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• Simple MPEG Video Stream player, cross-platform, in java, via NetBeans + Swing?

  - by DanM

  Hello all, Trying to build a very simple video player component in a JPanel (or something similar) to sit in a swing app, connect to an mpeg (or, really, anything VLC can output) video stream, and play it. Don't need any controls or anything -- just a live connection to the video stream. It has to be cross-platform -- at least Mac and Windows (linux would be a nice bonus, but not necessary). I'm developing in NetBeans, so any specifics regarding that would be extra-helpful. JMF? Xuggler? Help! Thanks.

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