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• Callbacks in Thrift Asynchronous Functions?

  - by Roberto Aloi

  Hi all, In Thrift it is possible to use the oneway modifier to specify a call as asynchronous. Apparently, it's not possible to define a callback, though, to be executed when the execution of the function is completed. It seems that the only possibility I have is to give my Thrift client (PHP) some "server" capabilities, so that, when the heavy computation is completed on the server side, I can send a notification to it. This means that I should have a new .thrift file, with new definitions, new services and all the rest and that I should generate php-server side code with Thrift. Even if this is feasible, it looks like an overkill to me and I'm wondering if there's a more clever way to implement the callback. Looking forward for some feedback from you, guys.

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• How to use htaccess to rewrite url to html anchor tag (#)

  - by Lee L

  Hi - I have a situation where I want to take the following URL: /1/john and have it redirect using Apache's htaccess file to go to /page.php?id=1&name=john#john so that it goes to an html anchor with the name of john. I've found a lot of reference to escaping special characters, and to adding the [NE] flag so that the redirect ignores the # sign, but these don't work. For example, adding [NE,R] means that the URL just appears in the browser address as the original: http://mysite.com/page.php?id=1&name=john#john. Any help would be appreciated.

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• Sharepoint create site navigation through programming

  - by Sachin

  Hi All, I have a requirement in sharepoint where I want to Create the top link navigation based on excel file. Means The site navigation structure (along with parent site subsite under parent site) is mention in excel file. I need to read that structure and based on modify the navigation in sharepoint. Please can any one tell me is it possible to configure navigation in such a way. If yes then please tell me how to achive it. FYI: I am using MOSS 2007. thanks in advance sachin katkar

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• C# "Enum" Serialization - Deserialization to Static Instance

  - by Walt W

  Suppose you have the following class: class Test : ISerializable { public static Test Instance1 = new Test { Value1 = "Hello" ,Value2 = 86 }; public static Test Instance2 = new Test { Value1 = "World" ,Value2 = 26 }; public String Value1 { get; private set; } public int Value2 { get; private set; } public void GetObjectData(SerializationInfo info, StreamingContext context) { //Serialize an indicator of which instance we are - Currently //I am using the FieldInfo for the static reference. } } I was wondering if it is possible / elegant to deserialize to the static instances of the class? Since the deserialization routines (I'm using BinaryFormatter, though I'd imagine others would be similar) look for a constructor with the same argument list as GetObjectData(), it seems like this can't be done directly . . Which I would presume means that the most elegant solution would be to actually use an enum, and then provide some sort of translation mechanism for turning an enum value into an instance reference. How might one go about this?

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• Spring GAE/J Could Not find API version error

  - by Julie Paltrow

  Hello, I am trying to use Spring MVC 3 on GAE/J and I got this error and I do not know what it means, does anybody have an idea and perhaps give me pointers on how to fix this? May 21, 2010 9:50:23 AM com.google.appengine.tools.info.LocalVersionFactory getVersion INFO: Could not find API version from /opt/home/me/workspace/SpringMVC/war/WEB-INF/lib/.svn java.util.zip.ZipException: error in opening zip file at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.<init>(ZipFile.java:114) at java.util.jar.JarFile.<init>(JarFile.java:133) at java.util.jar.JarFile.<init>(JarFile.java:97) at com.google.appengine.tools.util.ApiVersionFinder.findApiVersion(ApiVersionFinder.java:37) at com.google.appengine.tools.info.LocalVersionFactory.getVersion(LocalVersionFactory.java:65) at com.google.appengine.tools.info.UpdateCheck.getLocalVersion(UpdateCheck.java:112) at com.google.appengine.tools.info.UpdateCheck.checkForUpdates(UpdateCheck.java:91) at com.google.appengine.tools.info.UpdateCheck.doNagScreen(UpdateCheck.java:164) at com.google.appengine.tools.info.UpdateCheck.maybePrintNagScreen(UpdateCheck.java:132) at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:150) at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48) at com.google.appengine.tools.development.DevAppServerMain.<init>(DevAppServerMain.java:113) at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:89)

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• ASP.NET MVC 2 validation using DTOs instead of domain entities

  - by Kevin Pang

  I'm struggling to mesh two best practices together: Using DataAnnotations + ModelBinding for validation in ASP.NET MVC 2 Using DTOs instead of domain entities when passing data via the ViewModel If I want to pass over DTOs instead of domain entities, then leveraging DataAnnotations + ModelBinding for validation would require me to specify validation attributes on my DTO classes. This results in a lot of duplicated work since multiple DTOs may hold overlapping fields with the same validation restrictions. This means that any time I change a validation rule in my domain, I have to go find all DTOs that correspond with that value and update their validation attributes.

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• Dealing with the lack of closures in Objective-C

  - by Sean Clark Hess

  Maybe it's just the fact that I've been using http://nodejs.org/ lately, but the lack of closures in Objective-C (iphone) has been really hard to work around. For example, I'm creating service classes. Each service class can have several methods, each of which makes a different URL request. I can use the delegate pattern, but that means that I have to create a new service each time I want to call a method on it (because it has to store the delegate and selector for that request, and new method calls would overwrite them). Even more difficult for me is the fact that I can't easily keep local variables around in the scope for a callback. I have to store anything I want to send back to the delegate on the service class itself, which makes it harder to have more than one method on each class. How do you pros do it? Should I just quit whining and do it another way?

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• Custom View with Bindings in a NSTableCellView

  - by Kyle Kinkade

  i have an XCode 4 project for mac desktop. It has a tableview in it that uses NSTableCellViews. The TableView is connected to an NSArrayController to provide it's content. This is using bindings for custom labels and the like, which has worked out rather well. I have a custom view that i would like to put in the NSTableCellView, which will use custom drawing based on a NSNumber value from my Table Cell View binding. Since XCode 4, you can no longer have ibplugins, which means i can no longer create custom bindings for interface builder to work with. How can I still get this value to my custom view?

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• "TypeError: draw() takes exactly 1 non-keyword argument (3 given)"

  - by Amorack

  I wrote this code to open a window with Pyglet in Python... import pyglet from pyglet import window class Window(pyglet.window.Window): def __init__(self): super(Window, self).__init__() myLabel = pyglet.text.Label("Prototype") windowText = myLabel.draw(Window, "Hello World", font_name = "Times New Roman", font_size = 36, color = (193, 205, 193, 255)) def on_draw(self): self.clear() self.label.draw() if __name__ == '__main__': window = Window() pyglet.app.run() however every time I run it I get this error: TypeError: draw() takes exactly 1 non-keyword argument (3 given) AFAIK the "(3 given)" means the problem is with the font_size or color arguments but I'm not sure. Could someone explain what's wrong and help me make this work?

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• Killing a deadlocked Task in .NET 4 TPL

  - by Dan Bryant

  I'd like to start using the Task Parallel Library, as this is the recommended framework going forward for performing asynchronous operations. One thing I haven't been able to find is any means of forcible Abort, such as what Thread.Abort provides. My particular concern is that I schedule tasks running code that I don't wish to completely trust. In particular, I can't be sure this untrusted code won't deadlock and therefore I can't be certain if a Task I schedule using this code will ever complete. I want to stay away from true AppDomain isolation (due to the overhead and complexity of marshaling), but I also don't want to leave a Task thread hanging around, deadlocked. Is there a way to do this in TPL?

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• Datamining on a mysql database

  - by sliptix

  Hello, I Begin with textmining. I have two database tables with thousands of data.. a table for "skills" and a table for "skills categories" every "skill" belongs to a skills categorie. a "skill" is , physicaly, a varchar(200) field in the database, where there is some text describing the skill. Here are some skills extracted from the skills table: "PHP (good level), Java (intermediaite), C++" "PHP5" "project management and quality management" "begining Javascript" "water engineering" "dfsdf zerze rzer" "cibling customers" what i want to do is to extract knowledge from those fields, i mean extract only the real skill and ignore the rest of useless text. for the above example i want to get only an array with: "PHP" "Java" "C++" "PHP5" "project management" "quality management" "Javascript" "water engineering" "cibling customers" what should i do to extract the skills from tons of data please ? do you know specific algorithms to do this ? ex : k-means ... ? Thanks in advance.

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• Drag/Drop image url in IE

  - by pierre

  I have a requirement in our web app. to allow users to drag an image from an external site and drop it in a text editor they have open in our app. This is, as you'd expect, to let them embed the image in the document (its a rich text editor). In IE 8 this functionality appears to be broken. If I drag/drop, IE uses a relative URL for the 'src' tag on the image - which means I cannot then download the file and store it since I dont know the full address (eg: '../../imgs/myImage.png') Safari and Firefox do not do this; they provides the fully-qualified address (eg: www.mysite.com/imgs/myImage.png). Is this a bug in IE or just WebKit/Mozilla going the extra mile?

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• What does Siebel Error SBL-BPR-00176 mean?

  - by braveterry

  My webapp talks to Siebel just fine in one test environment, but in another we are getting the following error message: <Exception> <Major No.>256</Major No.> <Minor No.>6750384</Minor No.> <Message> The workflow/task engine cannot determine a next step while executing process definition 'Dynamic Pricing Procedure'. The last step that it executed was 'Start'.(SBL-BPR-00176) </Message> <DetailedMessage>Unknown<DetailedMessage> </Exception> Any idea about what the error message means and what we might do to get around it?

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• Python-MySQLdb problem: wrong ELF class: ELFCLASS32

  - by jsalonen

  As part of trying out django CMS (http://www.django-cms.org/), I'm struggling with getting Python-MySQLdb to work (http://pypi.python.org/pypi/MySQL-python/). I have installed Django CMS and all of its dependencies (Python 2.5, Django, django-south, MySQL server) I'm trying out the example code within Django CMS code with MySQL as chosen database type When I execute python manage.py syncdb, the following error occurs: django.core.exceptions.ImproperlyConfigured: Error loading MySQLdb module: /root/.python-eggs/MySQL_python-1.2.3c1-py2.5-linux-i686.egg-tmp/_mysql.so: wrong ELF class: ELFCLASS32 I have been able to trace the problem specifically to python-mySQLdb (as also visible in the stack trace). Other than that, I am completely puzzled. I don't have a clue what ELFCLASS32 means, or what ELF class is anyway. I suspect that this error could have something to do with the fact that I am running 64-bit version of Debian 5 (on a VPS). Any good ideas how to troubleshoot?

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• How can I ensure that when I shuffle my puzzle I still end up with an even permutation?

  - by Mithrax

  I'm interested making an implementation of the 14-15 puzzle: I'm creating an array with the values 0 - 15 in increasing order: S = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } Now, what I want to do is shuffle them to create a new instance of the puzzle. However, I know that if I create a board with an "odd permutation" than it is unsolvable. Wikipedia says I need to create the puzzle with an even permutation. I believe this means that I simply have to do ensure I do an even number of swaps? How would I modify Fisher-Yates so I ensure I end up with an even permutation at the end? If I do a swap for every element in the array that would be 16 swaps which I believe would be an even permutation. However, do I need to be concerned about swapping with itself? Is there any other way to ensure I have a valid puzzle?

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• Sharing application link via the same application, iphone

  - by Nithin

  Possible duplicate: How can i give app store link in my apps before approving another apps linking to an app on the Itunes store How to link to apps on the app store Hi all, I'm a littile bit confused. I need to provide the download link of my application (the iTunes link) inside my application. ie when the user would like to invite others via mail or some other means, have to provide the application link too with that.Is there any way to provide that before submitting the application to apple. Or i need to use the link as an update after getting my application approved by apple?

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• Django and floatformat tag

  - by Hellnar

  Hello, I want to modify / change the way the floatformat works. By default it changes the input decimal as such: {{ 1.00|floatformat }} -> 1 {{ 1.50|floatformat }} -> 1.5 {{ 1.53|floatformat }} -> 1.53 I want to change this abit as such: If there is a floating part, it should keep the first 2 floating digits. If no floating (which means .00) it should simply cut out the floating part. IE: {{ 1.00|floatformat }} -> 1 {{ 1.50|floatformat }} -> 1.50 {{ 1.53|floatformat }} -> 1.53

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• Get svn revision without an appropriate svn binary installed

  - by Sridhar Ratnakumar

  For some reason, we can't update the SVN in some build machines. Installed svn version is 1.3.x. But Hudson slave used 1.6 to create a checkout. This means we can't run "svn info" on those checkouts: $ svnversion subversion/libsvn_wc/questions.c:110: (apr_err=155021) svn: This client is too old to work with working copy '.'; please get a newer Subversion client $ svn info subversion/libsvn_wc/questions.c:110: (apr_err=155021) svn: This client is too old to work with working copy '.'; please get a newer Subversion client $ My question, is there a way to access the revision number without having to invoking the svn binary? You know, like trying to look into the .svn/ directory? Assume that the checkout is using latest svn version (1.6).

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• How can I walk through two files simultaneously in Perl?

  - by Alex Reynolds

  I have two text files that contain columnar data of the variety position-value, sorted by position. Here is an example of the first file (file A): 100 1 101 1 102 0 103 2 104 1 ... Here is an example of the second file (B): 20 0 21 0 ... 100 2 101 1 192 3 193 1 ... Instead of reading one of the two files into a hash table, which is prohibitive due to memory constraints, what I would like to do is walk through two files simultaneously, in a stepwise fashion. What this means is that I would like to stream through lines of either A or B and compare position values. If the two positions are equal, then I perform a calculation on the values associated with that position. Otherwise, if the positions are not equal, I move through lines of file A or file B until the positions are equal (when I again perform my calculation) or I reach EOF of both files. Is there a way to do this in Perl?

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• Sinatra 1.0 fastcgi deployment

  - by TheMoonMaster

  I am trying to deploy my sinatra app to my hosting(shared) and I keep getting this error. /usr/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/fastcgi.rb:23:in `initialize': Address family not supported by protocol - socket(2) (Errno::EAFNOSUPPORT) from /usr/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/fastcgi.rb:23:in `new' from /usr/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/handler/fastcgi.rb:23:in `run' from /usr/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:946:in `run!' from /usr/lib/ruby/gems/1.8/gems/sinatra-1.0/lib/sinatra/main.rb:25 from dispatch.fcgi:17 I have no idea what this means and I have tried many different things to fix it but nothing I tried seemed to work. My dispatch.fcgi is the following #!/usr/bin/ruby require 'rubygems' require 'sinatra' fastcgi_log = File.open("fastcgi.log", "a") STDOUT.reopen fastcgi_log STDERR.reopen fastcgi_log STDOUT.sync = true set :logging, false set :server, "FastCGI" load 'simple.rb' And finally, my .htaccess (fcgid is how my host told me to set it up) RewriteEngine on AddHandler fcgid-script .fcgi Options +FollowSymLinks +ExecCGI RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]

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• Career advice for a frustrated newbie programmer.

  - by Satoru.Logic

  Hi, all. This is my first year as a programmer. The programming language that I'm most familiar with is Python. I am maintaining a web2py based legacy system, alone, which means I have to grow up as an all-rounder. The original programmers on this project are nowhere to find, and there are hardly any usable documents about requirements or anything. I find it very frustrating every time I hear the users criticize the system, and I can't help explaining that "that was not my fault, those mess was there even before I entered this company." I wonder what should I do with this situation. Please give me some advice, thanks in advance.

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• How to deal with arrays of data in cookies

  - by peter

  Hi all, I want to store data in a cookie and I am not exactly sure how I will go about it. The data is the UserName, and Password values for the users that are logging into a website, e.g. sometime like this UserName = bob, Password=Passw0rd1 UserName = harry, Password=BLANK UserName = george, Password=R0jjd6s What this means is that bob and george logged into the site and chose to have their password remembered, but harry chose for his password not to be remembered. So on the login dialog a dropdown will be present with all the usernames in it 'bob', 'harry', 'george'. If they select the username bob the password will automatically be filled in, etc. So how does that information need to be stored in the cookie? Like it is above, or does it have to be, UserName1 = bob, Password1=Passw0rd1 UserName2 = harry, Password2=BLANK UserName3 = george, Password3=R0jjd6s Are the username and password values actually stored in the same cookie, or is each piece of data separate? Any information would be good.

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• How to fix Jersey POST request parameters warning?

  - by Brabster

  I'm building a very simple REST API using Jersey, and I've got a warning in my log files that I'm not sure about. WARNING: A servlet POST request, to the URI http://myserver/mycontext/myapi/users/12345?action=delete, contains form parameters in the request body but the request body has been consumed by the servlet or a servlet filter accessing the request parameters. Only resource methods using @FormParam will work as expected. Resource methods consuming the request body by other means will not work as expected. My webapp only has the Jersey servlet defined, mapped to /myapi/* How can I stop these warnings?

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• Django-pyodbc SQL Server/freetds server connection problems on linux

  - by wizard

  Error: ('IM002', '[IM002] [unixODBC][Driver Manager]Data source name not found, and no default driver specified (0) (SQLDriverConnectW)') I'm migrating from developing on a windows development machine to Linux machine in production and I'm having issues with the freetds driver. As far as I can tell that error message means it can't find the driver. I can connect via the cli via sqsh and tsql. I've setup my settings.py as such. 'bc2db': { 'ENGINE': 'sql_server.pyodbc', 'NAME': 'DataTEST', 'USER': 'appuser', 'PASSWORD': 'PASS', 'HOST': 'bc2.domain.com', 'options': { 'driver': 'FreeTDS', } }, Does anyone have any SQL Server experience with django? do I have to use a dns? (how would I format that?)

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• BSD Sockets don't behave in a iPhone 3G environment

  - by Kyle

  I noticed that many times while developing for an iPhone 3G, BSD socket functions will simply fail. I also noticed at the time, the 3G antenna wasn't even ON, nor was there WIFI Access to back up the network call (So it seems ridiculous that it doesn't turn on to support the network request).. This information was verified with an app from Apple in the SDK called Connectivity Test, or something of the sort. Basically if you load Safari or something, then quickly load up the App it would be fine.. Of course that's not ideal. Apparently, to apple, gethostbyname() or something of the sort is by no means a reason to turn on the Antenna. I contacted Apple about this, and they said that the BSD functions do not switch the Antenna on, but calling all of the Objective-C CFNetwork functions do. I want portable code, so is there a way to keep my existing BSD setup? I really dislike coding in Objective-C, so if anyone knows a work around, that would be awesome.

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