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• Using the Facebook Graph APIs PHP library

  - by briggins5

  I am using the PHP library for the Graph API (http://github.com/facebook/php-sdk) but am a bit confused about how it is all working (or not). I just want to authenticate the user and get the user ID back. What I really want to know is what to do once the user has logged in to Facebook and returned to my site. There is data called 'session' in the URL. Does this need to be stored in order to continually get the user ID? It is really not apparent, to me, from the samples or (lack of) documentation. Also, would it be easier to just cut out the PHP library altogether and just handle the reponse myself, storing it in a session variable. If i were to do this, what is the best method of getting/extracting the current users ID?

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• wxruby - Set max length of ComboBox

  - by Jonas Söderström

  Is is possible to set the Max length of a ComboBox in wxruby? I have looked in the documentation but find nothing http://wxruby.rubyforge.org/doc/combobox.html But if i do my_combobox.methods.sort I get set_max_size and set_min_size in the list. But When I call it my_combobox.set_max_length(100) I only get undefined method 'set_max_length' for #<Wx::ComboBox:0x4d4a914> I've also tried to call it as a private method def my_combobox.max(i) set_max_length(i) end my_combobox.max(100) But with the same result. The issue I want to avoid is that if somebody pastes 6000+ characters in my Combobox the text becomes white.

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• Implement Camera on Android Emulator | Need some knowledge

  - by Thisara

  I'm interested in doing some enhancements to android emulator (implement webcam on emulator). Therefore I'm following the android source and emulators source to get basic understanding & the connection between modules. But its really hard to understand it for someone who is new to android. Therefore can anyone please direct me to some resource to understand this. May be some proper documentation, tutorials or anything that i can understand this. And since i'm interested in emulator if i change the code of emulator with in "external\qemu" , then build it using "m emulator" and run using "emulator" , will those changes effect or apply onto the started emulator. And if anyone know please let me know that, what is the sdk it uses when it run as "emulator" from the build android source code. Cos if i want to install some application to that emulator how can i do that? Please help if anyone know...

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• Unable to encode to iso-8859-1 encoding for some chars using Perl Encode module

  - by ppant

  I have a HTML string in ISO-8859-1 encoding. I need to pass this string to HTML:Entities::decode_entities() for converting some of the HTML ASCII codes to respective chars. To so i am using a module HTML::Parser::Entities 3.65 but after decode_entities() operation my whole string changes to utf-8 string. This behavior seems fine as the documentation of the HTML::Parse. As i need this string back in ISO-8859-1 format for further processing so i have used Encode::encode("iso-8859-1",$str) to change the string back to ISO-8859-1 encoding. My results are fine excepts for some chars, a question mark is coming instead. One example is single quote ' ASCII code (’) Can anybody help me if there any limitation of Encode module? Any other pointer will also be helpful to solve the problem. Thanks

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• How to access a flash object embedded via swfobject's embedSWF?

  - by Andree

  Hi there, I have to call an ActionScript method via Javascript, but I have a problem accessing the flash object itself. I embed the flash file via the help of swfobject. Previously, when I use the static publishing approach, I could easily get the flash object by calling these methods: swfobject.registerObject("flash_object", "9", "expressInstall.swf"); var flash_object = swfobject.getObjectById("flash_object"); For some technical reasons, now I have to use the dynamic publishing approach (using swfobject.embedSWF). But, as mentioned in the documentation, the method getObjectById can only be used if you use static publishing approach. Now, how can I access the flash object? Cheers, Andree

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• Pylons 1.0 AttributeError: 'module' object has no attribute 'metadata'

  - by shiki

  Python noob trying to learn Pylons. I'm using the QuickWiki tutorial (http://pylonshq.com/docs/en/1.0/tutorials/quickwiki_tutorial/) from the 1.0 documentation, but this alleged "1.0" doc seems to just be "0.9.7"; I suspect that this has something to do with the error I'm getting. When I execute "paster setup-app development.ini", I get this: (mydevenv)lucid@lucid-laptop:~/QuickWiki$ paster setup-app development.ini Traceback (most recent call last): ... edited for brevity... File "/home/lucid/mydevenv/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 1954, in load File "/home/lucid/QuickWiki/quickwiki/config/middleware.py", line 11, in <module> from quickwiki.config.environment import load_environment File "/home/lucid/QuickWiki/quickwiki/config/environment.py", line 12, in <module> from quickwiki.model import init_model File "/home/lucid/QuickWiki/quickwiki/model/__init__.py", line 27, in <module> pages_table = sa.Table('pages', meta.metadata, AttributeError: 'module' object has no attribute 'metadata' (mydevenv)lucid@lucid-laptop:~/QuickWiki$

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• Calling activateWindow on QDialog sends window to background

  - by Stan

  I am debugging certain application written with C++/Qt4. On Linux it has problems that with certain window managers (gnome-wm/metacity), the main window (based on QDialog) is created in the background (it's not raised). I managed to re-create the scenario using PyQt4 and following code: from PyQt4.QtCore import * from PyQt4.QtGui import * import sys class PinDialog(QDialog): def showEvent(self, event): QDialog.showEvent(self, event) self.raise_() self.activateWindow() if __name__ == "__main__": app = QApplication(sys.argv) widget = PinDialog() app.setActiveWindow(widget) widget.exec_() sys.exit(0) If I remove self.activateWindow() the application works as expected. This seems wrong, since documentation for activateWindow does not specify any conditions under which something like this could happen. My question is: Is there any reason to have activateWindow in showEvent in the first place? If there is some reason, what would be good workaround for focusing issues?

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• Cross-Page communication in firefox extension

  - by OzBarry

  I have two tabs that my extension uses and I wanted to pass events back and forth between them. I've already developed a Google Chrome extension that does this via the background page api, but there doesn't seem to be an equivalent in firefox. I thought message-manager in the firefox extension docs would do the trick, but the documentation on the object is quite poor. I'd be just as happy with using one of the tabs to control the other if I can't directly import the ideas of a background page from google chrome api. Any help/guidance would be great.

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• .Net Compact Framework 2.0 touch and nice controls [.netcf 2.0]

  - by eridem

  Hello! I would like to know if somebody knows free custom nice controls for .NET Compact Framework 2.0. There are nice controls as Manila Interface SDK (http://forum.xda-developers.com/showthread.php?t=566188), Sense Interface SDK (http://forum.xda-developers.com/showthread.php?t=648906) and so on for free, but they work only on .NET CF 3.5. Furthermore, there are others that you have to pay for them and for .NET CF 2.0 and 3.5 (Resco or Touch Control Suite). And there is one called Fluid (http://fluid.codeplex.com/) but it's so complicated, there are not exactly controls (are classes added to a host control) and there is not much documentation to work with it. Any nice controls for free and working in .NET CF 2.0? And with list sliders if it's possible? Thanks!

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• How to structure Python package that contains Cython code

  - by Craig McQueen

  I'd like to make a Python package containing some Cython code. I've got the the Cython code working nicely. However, now I want to know how best to package it. For most people who just want to install the package, I'd like to include the .c file that Cython creates, and arrange for setup.py to compile that to produce the module. Then the user doesn't need Cython installed in order to install the package. But for people who may want to modify the package, I'd also like to provide the Cython .pyx files, and somehow also allow for setup.py to build them using Cython (so those users would need Cython installed). How should I structure the files in the package to cater for both these scenarios? The Cython documentation gives a little guidance. But it doesn't say how to make a single setup.py that handles both the with/without Cython cases.

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• How do I detect a click event on a google map through an overlay?

  - by freddoo

  My problem is that I have a circle map overlay but I want to be able to move the circle by clicking the map to set the new center, the actual problem is that when I click on the overlay and call my method 'setCenter(overlay, latlng) ' , I get undefined latlang and a valid overlay. here is an example that can illustrate the problem, if you click the map a polygon is drawn and if you click inside the polygon no new polygon is drawn, if you click anywhere else on the map a polygon is drawn http://code.google.com/apis/maps/documentation/examples/polygon-simple.html I want to be able to click the polygon and draw a new one making them overlap thanks

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• Element binding in Silverlight

  - by Matt

  Where can I find some good documentation on data/element binding? My Google searches haven't turned much up. I had a custom class with two properties named Text and Value. When I tried binding a list to a listbox it wouldn't work. By chance I modifed my datatemplate from this <TextBox Text="{Binding Text}"></TextBox> to this <TextBox Text="{Binding Path=Text}"></TextBox> and then everything worked great. I need some indepth documenation/samples to data/element binding. I don't understand why some examples have the path set whereas others do not. A full explanation of this, and all other nice to know tips would be much appreciated.

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• How do I use Python's itertools.groupby()?

  - by James Sulak

  I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this: take a list - in this case, the children of an objectified lxml element - divide it into groups based on some criteria, and then later iterate over each of these groups separately. I've reviewed the documentation (http://docs.python.org/lib/itertools-functions.html), and the examples, (http://docs.python.org/lib/itertools-example.html), but I've had trouble trying to apply them beyond a simple list of numbers. So, how do I use of itertools.groupby()? Is there another technique I should be using? Pointers to good "prerequisite" reading would also be appreciated.

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• Facebook Graph and PHP API

  - by Wes

  I've been working at this for a few hours, but the poor documentation is of no help. All I want to do is grab the data that exists at https://graph.facebook.com/cocacola/ as an example, and I cant even do that. I'm using the latest php API from facebook. This is my code, which returns nothing: <?php require '../src/facebook.php'; // Create our Application instance. $facebook = new Facebook(array( 'appId' => '254752073152', 'secret' => '904270b68a2cc3d54485323652da4d14', 'cookie' => true, )); $coke = $facebook->api('/cocacola'); echo '<pre>'; print_r($coke); echo '</pre>'; Any idea?

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• Discrete and Continuous Classifier on Sparse Data

  - by Chris S

  I'm trying to classify an example, which contains discrete and continuous features. Also, the example represents sparse data, so even though the system may have been trained on 100 features, the example may only have 12. What would be the best classifier algorithm to use to accomplish this? I've been looking at Bayes, Maxent, Decision Tree, and KNN, but I'm not sure any fit the bill exactly. The biggest sticking point I've found is that most implementations don't support sparse data sets and both discrete and continuous features. Can anyone recommend an algorithm and implementation (preferably in Python) that fits these criteria? Libraries I've looked at so far include: Orange (Mostly academic. Implementations not terribly efficient or practical.) NLTK (Also academic, although has a good Maxent implementation, but doesn't handle continuous features.) Weka (Still researching this. Seems to support a broad range of algorithms, but has poor documentation, so it's unclear what each implementation supports.)

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• What is the underlying reason for not being able to put arrays of pointers in unsafe structs in C#?

  - by cons

  If one could put an array of pointers to child structs inside unsafe structs in C# like one could in C, constructing complex data structures without the overhead of having one object per node would be a lot easier and less of a time sink, as well as syntactically cleaner and much more readable. Is there a deep architectural reason why fixed arrays inside unsafe structs are only allowed to be composed of "value types" and not pointers? I assume only having explicitly named pointers inside structs must be a deliberate decision to weaken the language, but I can't find any documentation about why this is so, or the reasoning for not allowing pointer arrays inside structs, since I would assume the garbage collector shouldn't care what is going on in structs marked as unsafe. Digital Mars' D handles structs and pointers elegantly in comparison, and I'm missing not being able to rapidly develop succinct data structures; by making references abstract in C# a lot of power seems to have been removed from the language, even though pointers are still there at least in a marketing sense. Maybe I'm wrong to expect languages to become more powerful at representing complex data structures efficiently over time.

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• Finding out all about Android Uri class - use and purpose

  - by Peter vdL

  Does anyone have some helpful links to find out about Android Uri's? For example, you get a Uri back from a "take a picture" Intent. What does a URI look like and how do you use it. Why are they used instead of filenames or file handles? The Dev documentation on the Uri class is practically worthless. http://developer.android.com/reference/android/net/Uri.html It is only clear if you already know exactly what it is, and how to use it. Thanks for any links.

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• Paypal subscription API - transaction variables not POSTed

  - by morpheous

  I am writing a payments system based around paypal, I am using the HTML 'API'. I am passing the following form fields to PayPal: 'rm' = 2 'return = http://www.example.com/payment-handler.php?token=sometoken Where 'token' is a token I generated. According to the paypal documentation, a return method (rm) of 2 indicates to Paypal that the transaction data be posted back to the callback url using the POST method. When processing items using 'buy_now' buttons, the transaction items are correctly POSTed to my callback url (payment-handler.php), but for 'subscribe' operations, although the callback url is called, no POST data is sent to the url, and also, the 'token' field is missing. Instead, there is a parameter called 'auth'. I cant see anything in the paypal docs about a 'auth' field - so I dont know whats generating it and if I can reliably using it. Can anyone shed some light on this?

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• Select Box not filling properly in rails

  - by CaptnCraig

  I am creating a select box for a form using this in _form.html.erb <%= f.select(:category_id,options_for_select(@cats)) %> @cats is an array created in my controller like this: @cats = [] categories.each do |c| @cats.push([c.full_name,c.id]) end The select box is properly filled, and the selected foreign key is even properly saved to the database. The problem is, when I come back in my edit action, the select box is moved back to the first item in the list, not the one corresponding to category_id. Reading the documentation it seems like this should just magically work. How do I get it to select the proper value?

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• Hibernate MySQL transaction configuration issue

  - by James

  I'm having trouble starting a transaction with Hibernate and MySQL while running in JUnit. I'm getting a HibernateException which states: "No TransactionManagerLookup specified". I believe this error is because I don't have a proper configuration setting for hibernate.transaction.manager_lookup_class. I see that under the namespace of org.hibernate.transaction there are quite a few different lookup classes that I could use. All of the documentation that I could find on these was very vague. My question is what is the appropriate one for MySQL?

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• How to use Page Object pattern with Cucumber and Webrat / Selenium?

  - by Will Sargent

  I'm looking at a cucumber test suite that is somewhat brittle right now; many small steps, and no knowledge of the page itself. I'd like to factor out the logic involved in the step definitions inside a series of Selenium PageObjects. As seen here. However, because I'm using Webrat and not Selenium, everything has to go through the Webrat model. So I cannot do class MyPage < Selenium::WebPage end because that adds a direct dependency. So I have to route everything through Webrat while still maintaining the Selenium Page object goodness. No documentation on this that I can see: if someone has anything on Webrat + PageModel I'd love to see it.

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• Problems with South/Django: not recognizing the Django App

  - by christmasgorilla

  I've got a Django project on my machine and when I try to use South to migrate the data schema, I get several odd errors. Example: $ python manage.py convert_to_south thisLocator /Library/Python/2.6/site-packages/registration/models.py:4: DeprecationWarning: the sha module is deprecated; use the hashlib module instead import sha /Users/cm/code/thisLocator/../thisLocator/batches/models.py:6: DeprecationWarning: the md5 module is deprecated; use hashlib instead import md5 There is no enabled application matching 'thisLocator'. I've followed the South documentation. Settings.py has it in the installed apps, I can run import south from the manage.py shell. Everyone else on my team is calling the app thisLocator. Am I doing something really stupid?

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• jQuery events .load(), .ready(), .unload()

  - by Eric

  Hi folks, Just a simple question, for the jquery event. Are the .load(), .ready() and .unload() run in order when the DOM is loaded? The answer seems yes when I see the jQuery Documentation. <script type="text/javascript"> $(window).load(function () { // run code initializeCode(); }); $(document).ready(function() { //run code that MUST be after initialize }); $(window).unload(function() { Cleanup(); }); </script> However, the code inside the .ready() is execute before the initializeCode(); is execute, so I feel really strange. And now I have to place my code inside the .onload() method and just after the initializeCode(); line, which means to be inside the .ready() block. Could someone explain me more about this, as I am new to jQuery. Thank you so much.

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• How can I learn a multitouch screen's communication protocol and write a C# application for it?

  - by puri

  I have got a monitor with multitouch overlay on top of it. It works fine with Windows 7 but I want to write a multitouch application in C# for Windows XP which doesn't support touch feature out of the box. There is no documentation whatsoever and I emailed the manufacturer but never got a reply. However the device works with Google Earth, which doesn't natively support multitouch, on Windows XP. So I think it generates many types of messages together i.e. WM_TOUCH for Windows 7, one for Google Earth COM API, and probably its own messages either in UDP or Windows message form. How can I trap all communications and learn the protocol?

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• IIS log analysis - how to retrieve referer information

  - by balalakshmi

  Per this documentation http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/676400bc-8969-4aa7-851a-9319490a9bbb.mspx?mfr=true , it says cs(Referrer) contains the referer information that can be read from the IIS log I am trying to display the log information using a asp.net repeater control: <asp:Repeater ID="rptlIISLogEntries" runat="server"> ... ... <ItemTemplate> <tr> <td><%# Eval("time")%></td> <td><%# Eval("cs(Referrer)")%></td> Eval("cs(Referrer)" throws an error DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'cs'. my Question: how to display the referer information in the repeater

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