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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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• When Debugging in Xcode what does "out of scope" mean?

  - by Buffernet

  I'm in xcode debugging my iphone application. when i get to a break point and I roll over my object and properties of that object say "out of scope" instead of their respective values. Here's what I do: I have inited a view with nib name (initwithnibname). Then set the property of that view to the object that I want. I have placed the breakpoint in the viewwillappear method. I rollover my reference to the variable that was is my property. All properties in the object say "out of scope" Does anyone know why this is happening?

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• Modify headers in Pylons using Middleware

  - by Anders

  Hi all, I'm trying to modify a header using Middleware in Pylons to make my application RESTful, basically, if the user request "application/json" via GET that is what he get back. The question I have is, the variable headers is basically a long list. Looking something like this: [('Content-Type', 'text/html; charset=utf-8'), ('Pragma', 'no-cache'), ('Cache-Control', 'no-cache'), ('Content-Length','20'), ('Content-Encoding', 'gzip')] Now, I'm looking to just modify the value based on the request - but are these positions fixed? Will 'Content-Type' always be position headers[0][0]? Best Regards, Anders

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• Rotating text in postscript

  - by Mrgreen

  I have the following postscript code: /outputtext { /data exch def /rot exch def /xfont exch def /Times-Roman findfont xfont scalefont setfont /y1 exch def /x1 exch def x1 y1 moveto rot rotate data show } def % x y fontsize rotation (text) outputtext 20 300 12 0 (text1) outputtext 20 400 12 90 (text2) outputtext 20 500 12 90 (text3) outputtext 20 600 12 0 (text4) outputtext showpage The function simply outputs text based on a x, y co-ords and the text to display, there is also a variable for rotation. For some reason when I output text with a rotation of 0 degrees, all other text that comes after that will not work, I can't seem to figure out why this is the case. In the example above, 'text1' and 'text2' will display, but not 3 and 4.

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• Traverse list to add elements, C#.

  - by Addie

  I have a list of objects. Each object has an integer quantity and a DateTime variable which contains a month and year value. I'd like to traverse the list and pad the list by adding missing months (with quantity 0) so that all consecutive months are represented in the list. What would be the best way to accomplish this? Example: Original List { Jan10, 3 }, { Feb10, 4 }, { Apr10, 2 }, { May10, 2 }, { Aug10, 3 }, { Sep10, -3 }, { Oct10, 6 }, { Nov10, 3 }, { Dec10, 7 }, { Feb11, 3 } New List { Jan10, 3 }, { Feb10, 4 }, {Mar10, 0}, { Apr10, 2 }, { May10, 2 }, { Jun10, 0 }, { Jul10, 0 } { Aug10, 3 }, { Sep10, -3 }, { Oct10, 6 }, { Nov10, 3 }, { Dec10, 7 }, { Jan11, 0 }, { Feb11, 3 }

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• Best practice for making code portable for domains, subdomains or directores

  - by Duopixel

  I recently coded something where it wasn't known if the end code would reside in a subdomain (http://user.domain.com/) or in a subdomain (http://domain.com/user), and I was lost as to the best practice for these unknown scenarios. I could thinks of a couple: Use absolute paths (/css/styles.css) and modrewrite if it ends up being /user Have a settings file and declare a variable with the path (<? php echo $domain . "/css/styles" ?>) Use relative paths (../css/styles.css). What is the best way to handle this?

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• Ho to get PHP setrawcookie value back?

  - by user250343

  The IETF recommends to use base64 encoding for binary cookie values. http://tools.ietf.org/html/draft-ietf-httpstate-cookie-07 So I use setrawcookie(..) but I don't know what variable to use to get the cookie back because $_COOKIE[..] still uses the URL decoding that matches setcookie(..). This replaces "+" with " " in the output. <?php var_dump($_COOKIE['TEST']); $binary_string = ""; for($index = 0; $index < 256; $index++){ $binary_string .= chr($index); } $encoded_data = base64_encode($binary_string); var_dump($encoded_data); $cookie_set = setrawcookie('TEST', $encoded_data, time() + 3600); ?

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• C++0x regex in GCC

  - by rwallace

  The following code: #include <regex> using namespace std; (snippage) regex_search(s, m, re); works in Microsoft C++, but GCC 4.4.3 gives the following error message: /usr/include/c++/4.4/tr1_impl/regex:2255: warning: inline function ‘bool std::regex_search(_Bi_iter, _Bi_iter, std::match_results<_Bi_iter, _Allocator&, const std::basic_regex<_Ch_type, _Rx_traits&, std::regex_constants::match_flag_type) [with _Bi_iter = __gnu_cxx::__normal_iterator, std::allocator , _Allocator = std::allocator, std::allocator , _Ch_type = char, _Rx_traits = std::regex_traits]’ used but never defined Of course it wouldn't surprise me if regex were simply one of the C++0x features still on the to-do list for GCC, but what I'm scratching my head over is, in that case, why does it happily take the include directive, variable declarations etc. and only trip over the function call (which it even seems to understand). Is there something I'm missing?

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• Implementing Brainf*ck loops in an interpreter

  - by sub

  I want to build a Brainf*ck (Damn that name) interpreter in my freshly created programming language to prove it's turing-completeness. Now, everything is clear so far (<+-,.) - except one thing: The loops ([]). I assume that you know the (extremely hard) BF syntax from here on: How do I implement the BF loops in my interpreter? How could the pseudocode look like? What should I do when the interpreter reaches a loop beginning ([) or a loop end (])? Checking if the loop should continue or stop is not the problem (current cell==0), but: When and where do I have to check? How to know where the loop beginning is located? How to handle nested loops? As loops can be nested I suppose that I can't just use a variable containing the starting position of the current loop. I've seen very small BF interpreters implemented in various languages, I wonder how they managed to get the loops working but can't figure it out.

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• Checking a checkbox node programmatically with jsTree

  - by Raj

  In a tree built with jsTree, I have the text within the <a> tag sitting in a variable. I would like to check that node. How can I do so? I am currently finding that node, using jQuery, and altering its class. However, this does not repair the parent node by making the parent undetermined in its class. I tried doing $('.colors').jstree("checkbox_repair"), but that didn't seem to do anything. It would be great if someone could actually answer both those questions, since they are related to the same problem. Here is a jsFiddle, illustrating the issue-- http://jsfiddle.net/thapar/5XAjU/

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• How can I only allow certain filetypes on upload in php?

  - by Chris

  I'm making a page where the user upload a file. I want an if statement to create an $error variable if the file type is anything other jpg, gif, and pdf. Here's my code: $file_type = $_FILES['foreign_character_upload']['type']; //returns the mimetype if(/*$file_type is anything other than jpg, gif, or pdf*/) { $error_message = 'Only jpg, gif, and pdf files are allowed.'; $error = 'yes'; } I'm having difficulty structuring the if statement. How would I say that?

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• PHP Form Validation Regular Expression, no symbols or numbers

  - by MrEnder

  Ok I am trying to get the users First Name the form gets their name perfectly fine and posts it into a variable. Now I am trying to do error checking else if(!preg_match("/^[\w-]+$/", $firstNameSignup)) { $firstNameSignupError = "Your first name cannot contain numbers or symbols, you entered " . $firstNameSignup; $firstNameSignup = ""; } I tried the above code and it does not like me but my if statement if(!isset($firstNameSignup) || $firstNameSignup == "") { $firstNameSignupError = "You must enter your first name"; } works fine so I know that the error is in that else if statement... most likely in my regular expression any help??? I'm totally at a loss (really new to PHP and regular expressions) Thanks Shelby

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• OAuth iPhone client, problems with HTTP_AUTHORIZATION

  - by Rich

  Hi, I've been trying to implement OAuth in my iPhone app. However I have hit a problem. I have two servers, a local web server which is on my machine at home, I use this for testing. The machine is IIS 7 running PHP 5.08. Everything works fine on this server. However my live (web server) is running Apache and PHP 5.12. The problem is when I try to request a RequestToken the HTTP_AUTHORIZATION variable isn't posted to the web server, so I get an error returned from the server saying 'Invaild Consumer Key'. There is clearly a problem with the way the server is setup (as the code works on my local server). The code I am using is from this walkthrough http://code.google.com/p/oauthconsumer/wiki/UsingOAuthConsumer I have tried dumping the PHP headers and indeed HTTP_AUTHORIZATION is missing. Can anyone tell me how to fix this? (as it's driving me mad :)) Thanks Rich

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• create a simple pdf report from html

  - by opensas

  I'm looking for a way to generate pdf files from html In order to make simple tabular reports I would need the following features table rendering variable page size repeating headers / footers on every page calculated page number / total page css support would be nice I know there have been many similar questions in stackoverflow, but I don't know if there's a product that supports the aforementioned features... Ideally, the source would be a plain and simple well built html with css, (I'm building the html files, so I can adapt to the products needs, that is, it won't have to render every piece of html crap you can throw at a browser) and with some custom tags to configure headings, footer, page size, etc... then I would run a command line to convert it from html to pdf. I think http://www.allcolor.org/YaHPConverter/ does something like that

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• Django comparing model instances for equality

  - by orokusaki

  I understand that, with a singleton situation, you can perform such an operation as: spam == eggs and if spam and eggs are instances of the same class with all the same attribute values, it will return True. In a Django model, this is natural because two separate instances of a model won't ever be the same unless they have the same .pk value. The problem with this is that if a reference to an instance has attributes that have been updated by middleware somewhere along the way and it hasn't been saved, and you're trying to it to another variable holding a reference to an instance of the same model, it will return False of course because they have different values for some of the attributes. Obviously I don't need something like a singleton , but I'm wondering if there some official Djangonic (ha, a new word) method for checking this, or if I should simply check that the .pk value is the same with: spam.pk == eggs.pk I'm sorry if this was a huge waste of time, but it just seems like there might be a method for doing this, and something I'm missing that I'll regret down the road if I don't find it.

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• Interpolation of time series data in R

  - by Pierreten

  I'm not sure what i'm missing here, but i'm basically trying to compute interpolated values for a time series; when I directly plot the series, constraining the interpolation points with "interpolation.date.vector", the plot is correct: plot(date.vector,fact.vector,ylab='Quantity') lines(spline(date.vector,fact.vector,xout=interpolation.date.vector)) When I compute the interpolation, store it in an intermediate variable, and then plot the results; I get a radically incorrect result: intepolated.values <- spline(date.vector,fact.vector,xout=interpolation.date.vector) plot(intepolated.values$x,intepolated.values$y) lines(testinterp$x,testinterp$y) Doesn't the lines() function have to execute the spline() function to retrieve the interpolated points in the same way i'm doing it?

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• Using readfile() with remote URL and SSL

  - by ColmF

  I have a php-based website that uses SSL and requires a a user to login before accessing any page. I would like to allow access to this site from another domain, so that the functionality remains the same, but the look, feel and domain changes for the user (with the added advantage that I have to maintain only one version of the code). Having done some reading, I'm using readfile() function calls in php files on the secondary server to corresponding files on the primary server. For example, the login.php on the primary server is accessed from the secondary server by a file called login.php containing readfile("http://www.primarydomain.com/login.php") (and nothing else). Now the problem - I can't even login! The login page appears fine when called initially, but when login user and pwd are entered and submitted, it's as if the remote server doesn't see the $_SERVER['REQUEST_METHOD'] variable that triggers form processing and just loads as an empty form. Any ideas what I'm doing wrong or what configuation I might need to change? Thanks!

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• Sorting List which has object that contains two string members that contains numbers

  - by Lemo

  I want to know the best solution for this my case here is that i am taking values from Excel sheet and pushing them to database field, sometimes that field might contain some strings (thats why I cant make my object members int / double) In my class below size is the variable responsible for showing size of files in bytes public class dataNameValue { public string Name { get; set; } public string Count { get; set; } public string Size { get; set; } } I wanted to sort the list by file Size something like List mylist = new List(); mylist = mylist.OrderByDescending(i = i.Size).ToList(); The problem is that if i sorted it without converting it to "int/double" first -- its not giving right results

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• VB.net Edit-And-Continue: ignore "unable to apply this change while debugging"

  - by FastAl

  When using VB.Net (2008) and paused in debugging, Edit-And-Continue is a great time-saver. However if you change any module/class-level information (variable, sub/function signature, etc), you get the error message like this: "unable to apply this change while debugging" While I can understand the technical challenge to making this work (and why it would be hard), it leaves me in a tight spot with just a few options: 1) Restart and recompile and get the program back to the same state 2) Continue debugging without making the change, and risk forgetting 3) Type up a reminder note to make the change All of which are annoying. Now I know that option '4) Just actually make the change' may not be possible. but does anybody know how to enable the following 'technically easy' possibility? 4) Let me change the code, get it flagged with the purple squiggly underline, so I can save it, but just ignore the change until recompile I have checked the Tools|options|debug|edit and continue, nothing appears to let me do this. thanks!

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• Unselected UIPickerView value

  - by morticae

  According to the documentation, if a UIPickerView has no selected value, the expected return from selectedRowInComponent: should be: "A zero-indexed number identifying the selected row, or -1 if no row is selected." However, if I check the value the very line after initializing one, its value is 0. Even if I then manually set it to -1, it still returns 0. I would like to be able to detect whether the user has chosen a value yet or not, without recording it in a local variable. Is this possible? example: UIPickerView *picker = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 46.0, 320.0, 216.0)]; [picker selectRow:-1 inComponent:0 animated:NO]; NSLog(@"SELECTED %d", [picker selectedRowInComponent:0]); expected output: SELECTED -1 actual output: SELECTED 0

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• Porting from GAE to TomCat or another servlet server

  - by bach

  Hi guys, I'm unhappy from GAE because - One can't have a global variable and the 'synchronize' keyword. Instead one have to catch a basically DB transcational exception and retry in a while loop - which will eat all my free CPU time and will start costing me money as I reach the google's qouata. Is it safe to use synchronize inside a doPost() in tomcat? (i guess that it's ok as long as all the servlets are running on on 1 VM?). If not in all tomcat configurations, how do I configure tomcat to make it safe? How can I convert a GAE app to my own tomcat server? - How to install DataNucleus Access Platform on tomcat? Best regards

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• Shell Script Sequencing with Rake

  - by Haseeb Khan

  Hi All, I am working on a rake utility and want to implement something mentioned below: There are some shell commands in a sequence in my Rake file. What I want is that the sequence should wait for the previous command to finish processing before it moves to the next one. sh "git commit -m \"#{args.commit_message}\"" do |ok, res| # Do some processing end sh "git push heroku master" So, in the above example what I want is that sh "git push heroku master" shouldn't be executed until the processing in the sh "git commit -m \"#{args.commit_message}\"" do |ok, res| # Do some processing end is completed. Also another nice to have would be that if I can store the output of the shell command in a Ruby variable so it can be used in further manipulation if required. Looking forward to a reply from the fellow community member shortly. Thanks in advance.

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• C# - Process.Start - Pass html code to exe as argument

  - by dkirk

  Hello, I am using the code below to start a executable file from a windows service and I need to pass html code (stored in a variable) as an argument. I am escaping with double quotes but this is not working. What do I need to do in order to pass this correctly? Thanks in advance for any guidance that is offered. Inside the service: Process.Start(@"E:\Program Files\MyApp.exe", dr["rec"].ToString() + " \"" + subject + "\" \"" + htmlVar); and then within MyApp.exe: static void Main(string[] args) { Program MyProg = new Program(); MyProg.MyMeth(args[0].ToString(), args[1].ToString(), args[2].ToString()); }

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• Google's Geocoder returns wrong country

  - by 6bytes

  Hi I'm using Google's Geocoder to find lat lng coordinates for a given address. var geocoder = new google.maps.Geocoder(); geocoder.geocode( { 'address': address, 'region': 'uk' }, function(results, status) { if(status == google.maps.GeocoderStatus.OK) { lat: results[0].geometry.location.lat(), lng: results[0].geometry.location.lng() }); address variable is taken from an input field. I want to search locations only in UK. I thought that specifying 'region': 'uk' should be enough but it's not. When I type in "Boston" it founds Boston in US and I wanted the one in UK. How to restrict Geocoder to return locations only from one country or maybe from a certain lat lng range? Thanks

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• Rails belongs_to issues

  - by Rahul

  I was trying to follow the answer provided by this post About Event_calendar.Showing only events for current user and not all events present However when I tried to add the belongs_to user in the event model, it gives me the following error. NameError (undefined local variable or method 'user' for #<Class:0x007fff15d1f6c0>): app/models/event.rb:3:in '<class:Event>' app/models/event.rb:1:in '<top (required)>' app/controllers/calendar_controller.rb:9:in 'index' Rendered .../.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/action_dispatch/middleware/templates/rescues/_trace.erb (2.8ms) Rendered .../.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (2.0ms) Rendered .../.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (23.6ms) in my user.rb model I have included has_many :events Any idea how to fix this?

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