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• How to download files directly to disk on the iPhone os?

  - by favo

  Hi, I would like to download files directly from an URL to the disk using objective-c on the iPhone os. Currently I am using NSURLConnection to send a synchronousRequest, writing the returned NSData into a file. How can I change the download handling (still having the request beeing synchronous, it is already in a background thread) to write the data directly to disk, not using memory variables to store the complete content (only small parts)? A sample code would be appreciated. Thank you all in advance for your responses!

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• How can I prevent ADO from creating multiple SPIDs?

  - by stusmith

  I'm working on an application that creates a single ADO connection and keeps it open for the lifetime of the application. I have connection pooling turned off. (Please ignore the fact that this might not be best practice for the purposes of this question). If I spawn a new thread and use the exact same ADO connection, it uses a new SPID behind the scenes. Is there anyway to ensure an ADO connection always uses the same SPID, across all threads? (For reference the application is VC++ using ADO via COM to SQL Server).

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• How to start coding the "Dining Philosophers" simulation?

  - by GrizzlyGuru

  I'm not a beginner at C# but I really need to increase my understanding, so I've picked a classic deadlock problem to code to help teach myself some of the more advanced concepts of C#. The Dining Philosophers Problem seems like a good one, but I need a little help to get started. I know I need to approach the "diners" as objects, but to simulate the random delays between eating, should I look to threading with each diner in a separate thread? Do I need some kind of "master" to monitor all the actions? Any general design concept advice is welcome, but I'd like to do the grunt programming as an exercise. Thanks!

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• Parameter is not valid when getting image from stream

  - by duka1

  Hi guys, I have this code: MemoryStream ms = new MemoryStream(newbytes, 0, newbytes.Length); ms.Position = 0; ms.Write(newbytes, 0, newbytes.Length); Image img = Image.FromStream(ms); img.Save(@"C:\Users\gsira\Pictures\Blue hills5.jpg"); I get this error at the Image.FromStream(ms) call: System.ArgumentException: Parameter is not valid. at System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateIma How can I resolve this? A couple of links which solve this problem (one on an MSDN thread) are broken so I am lost.

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• Custom Control with Localization Support in WP7

  - by Ponmalar

  I have created the DateTimePicker control. Now i want to add localization Support with this. I have followed the below steps. Created CustomControls.de-DE.resx inside the ResourceFolder. added some commonly used strings in that resx file changed the access modifier to Public added <SupportedCulture>de-DE;</SupportedCulture> in the csproj file. set System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo("de-DE"); in sample.cs file before IntializeComponent(). my DateTimevalue was " 2 Day(s): 3 Hr (s): 5 Min(s) : 32 Sec (s) Getting only default language that is english. What i did wrong? Please help me anyone. Is anything i missed?

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• Setting Up My Server to Do DNS On OpenSuse 11.3

  - by adaykin

  Hello, I am attempting to use my server to be a DNS server. I am having trouble getting the domain setup. Here is what I have so far: /var/lib/named/master/andydaykin.com: $TTL 2d @ IN SOA andydaykin.com. root.andydaykin.com. ( 2011011000 ; serial 0 ; refresh 0 ; retry 0 ; expiry 0 ) ; minimum andydaykin.com. IN NS ns1.andydaykin.com. andydaykin.com. IN SOA ns1.andydaykin.com. hostmaster.andydaykin.com. ( @.andydaykin.com. IN NS ns1.andydaykin.com. ns1.andydaykin.com. IN A 204.12.227.33 www.andydaykin.com. IN A 204.12.227.33 /etc/resolve.conf: search andydaykin.com nameserver 204.12.227.33 /etc/named.conf: options { # The directory statement defines the name server's working directory directory "/var/lib/named"; dump-file "/var/log/named_dump.db"; statistics-file "/var/log/named.stats"; listen-on port 53 { 127.0.0.1; }; listen-on-v6 { any; }; notify no; disable-empty-zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA"; include "/etc/named.d/forwarders.conf"; }; zone "." in { type hint; file "root.hint"; }; zone "localhost" in { type master; file "localhost.zone"; }; zone "0.0.127.in-addr.arpa" in { type master; file "127.0.0.zone"; }; Include the meta include file generated by createNamedConfInclude. This includes all files as configured in NAMED_CONF_INCLUDE_FILES from /etc/sysconfig/named include "/etc/named.conf.include"; zone "andydaykin.com" in { file "master/andydaykin.com"; type master; allow-transfer { any; }; }; logging { category default { log_syslog; }; channel log_syslog { syslog; }; }; What I am doing wrong?

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• Global list in C/gtk+

  - by sterh

  Hello, I need in global list in my gtk+ application, i use for it GList: For example: I have structure: typedef struct _data { Glist list; }Data; I want to use one copy of the list in the whole program: I have a function bulid my list: gboolean build_list() { Data->list = g_list_append(mw->a, "First "); Data->list = g_list_append(mw->a, "Second "); Data->list = g_list_append(mw->a, "Third "); g_list_foreach(Data->list, (GFunc)printf, NULL); } After calling this function to display all items in the list. zbut when i try to make it in another function - for example: void foreach() { g_list_foreach(Data->list, (GFunc)printf, NULL); } I see error in gdb: *Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb7335700 (LWP 5364)] 0xb765a7d7 in strchrnul () from /lib/i686/cmov/libc.so.6 * How can i create global list in my application? Thank you.

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• Wordpress SQL_CALC fix causes PHP error

  - by ok1ha

  I'm looking for some followup on an older topic for Wordpress where SQL_CALC was found to slow things down when you have a large DB in Wordpress. I have been using the code, at the bottom of this post, to get around it but it does generate an error in my error log. How would I prevent this error? PHP Warning: Division by zero in /var/www/vhosts/domain.com/httpdocs/wp-content/themes/greatTheme/functions.php on line 19 The original thread: http://wordpress.org/support/topic/slow-queries-sql_calc_found_rows-bringing-down-site?replies=25 The code in my functions.php: add_filter('pre_get_posts', 'optimized_get_posts', 100); function optimized_get_posts() { global $wp_query, $wpdb; $wp_query->query_vars['no_found_rows'] = 1; $wp_query->found_posts = $wpdb->get_var( "SELECT COUNT(*) FROM wp_posts WHERE 1=1 AND wp_posts.post_type = 'post' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private')" ); $wp_query->found_posts = apply_filters_ref_array( 'found_posts', array( $wp_query->found_posts, &$wp_query ) ); $wp_query->max_num_pages = ceil($wp_query->found_posts / $wp_query->query_vars['posts_per_page']); return $wp_query; }

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• How to analyse Wikipedia article's data base with R?

  - by Tal Galili

  Hi all, This is a "big" question, that I don't know how to start, so I hope some of you can give me a direction. And if this is not a "good" question, I will close the thread with an apology. I wish to go through the database of Wikipedia (let's say the English one), and do statistics. For example, I am interested in how many active editors (which should be defined) Wikipedia had at each point of time (let's say in the last 2 years). I don't know how to build such a database, how to access it, how to know which types of data it has and so on. So my questions are: What tools do I need for this (besides basic R) ? MySQL on my computer? RODBC database connection? How do you start planning for such a project?

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• CaptureCameraDialog returns OK but does not save (Motorola ES400)

  - by Dominic

  Ok it seems like everyone in the world has issues with CaptureCameraDialog. In my case the result is OK, but when taking the photo there is a MessageBox that says "Error" that appears and disappears in the blink of an eye, then returns to my app (so I don't have time to actually read the error). It has not saved the file. It does not throw an error to my application. There is also another issue which is exactly the same as the issue talked about here (yet none of the fixes work for me). http://www.pcreview.co.uk/forums/thread-4025602.php Does anyone know how to get the "error message" that the dialogue box displays for an instant?

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• Android: Touch seriously slowing my application

  - by Jason Rogers

  Hi all, I've been raking my brains on this one for a while. when I'm running my application (opengl game) eveyrthing goes fine but when I touch the screen my application slows down quite seriously (not noticeable on powerful phones like the nexus one, but on the htc magic it gets quite annoying). I did a trace and found out that the touch events seem to be handled in a different thread and even if it doesn't take so much processing time I think androids ability to switch between threads is not so good... What is the best way to handle touch when speed is an issue ? Currently I'm using : in the GLSurfaceView @Override public boolean onTouchEvent(MotionEvent event) { GameHandler.onTouchEvent(event); return true; } Any ideas are welcome

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• How to run "android.bat sdk" in Window 7

  - by user1730495

  I have downloaded and installed Android SDK and tried to start android.bat sdk but got following exception: C:\products\Android\tools>android.bat sdk Exception in thread "main" java.lang.UnsatisfiedLinkError: no swt-win32-3550 or swt-win32 in swt.library.path, java.library.path or the jar file at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source) at org.eclipse.swt.internal.C.<clinit>(Unknown Source) at org.eclipse.swt.widgets.Display.<clinit>(Unknown Source) at com.android.sdkmanager.Main.showSdkManagerWindow(Main.java:328) at com.android.sdkmanager.Main.doAction(Main.java:302) at com.android.sdkmanager.Main.run(Main.java:118) at com.android.sdkmanager.Main.main(Main.java:101) I have searched for solution a long time but I cannot get it to work. Is there anything I have to set up first?

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• File.Exists() returns false, but not in debug

  - by Tor Haugen

  I'm being completely confused here folks, My code throws an exception because File.Exists() returns false public override sealed TCargo ReadFile(string fileName) { if (!File.Exists(fileName)) { throw new ArgumentException("Provided file name does not exist", "fileName"); } Visual studio breaks at the throw statement, and I immediately check the value of File.Exists(fileName) in the immediate window. It returns true. When I drag the breakpoint back up to the if statement and execute it again, it throws again. fileName is an absolute path to a file. I'm not creating the file, nor writing to it (it's there all along). If I paste the path into the open dialog in Notepad, it reads the file without problems. The code is executing in a background worker. It's the only complicating factor I can think of. I am positive the file has not been opened already, either in the worker thread or elsewhere. What's going on here?

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• WPF> Using RadioButtonList style. I want to display user friendly enum strings. how?

  - by Saghar

  Hi WPF lovers, I want to display all the possible enum values as Radio buttons. I am using popular RadioButtonList style to display the radiobutton from my enum using DataProvider in a Listcontrol. I can get all the radio buttons but the text appear with the radio button is not user friendly. I am using the following method. http://social.msdn.microsoft.com/forums/en-US/wpf/thread/5137aabc-bb3a-478a-9438-bc93dd9cc0ac/ I want to show "A ball" instead of "a" and "B ball" instead of "b" I thought about using converter. But where to use convert. Or any other way to display user friendly values? As this style is very common, thats why I am not writing whole code. If anything not clear, please ask. I have already invested about 5 hours on this problem.

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• Java: stopping long HTTP operations

  - by kilonet

  I'm using Apache Common library for HTTP operations: HttpClient client = getClient(); PutMethod put = new PutMethod(url); FileRequestEntity countingFileRequestEntity = new FileRequestEntity(file, "application/octet-stream"); put.setRequestEntity(countingFileRequestEntity); client.executeMethod(put); put.releaseConnection(); I wonder how can safely interrup long HTTP operation. Running it in new thread and stopping it seems to be wrong way. HttpMethodBase has abort() method, but I can't understand how to use it because client.executeMethod blocks execution until it complets

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• Getting percentages.

  - by user287798

  Hi, i have got a standing answer in this thread. http://stackoverflow.com/questions/2396203/get-the-count-of-elements-where-candidate-has-won But i am failing to get the percentage, what am i doing wrong. I have the code below. var s4 = from can in allCandidates let noDists= ((from d in root.Elements("Provinces") select d.Attribute("Province").Value).Distinct()).Count() let count = (from winner in (from p in root.Descendants("Province_Data") let maxVotes = (from c in p.Elements("Candidate") select c) .Max(x => ((int)x.Element("votes"))) select (from c in p.Elements("Candidate") select c).Where(x => ((int)x.Element("votes")) == maxVotes) .First().Element("name").Value ) where winner == can select winner).Count() orderby count descending select new { Candidate = can, NumberOfProvincesWon = count,Percentage= (count/noDists)*100}; foreach (var d in s4) Console.WriteLine(" {0}", d.ToString());

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• jQuery JSON help

  - by kim

  okay I'm new to jQuery and JSON but I have now done so I got some information from the database in JSON format and now I want to show the results in a nice way but I don't know how ;) what I want is to show 5 newest threads on my page so will this script try to load all the time or do I need to do something else? I want it to show the 5 newest threads and when there somes a new thread i should slide down and the 6 threads at the bottom should disappear Here is my code <script type="text/javascript"> $.getJSON('ajax/forumThreads', function(data) { //$('<p>' + data[0].overskrift + '</p>').appendTo('#updateMe > .overskrift'); $('<div class="overskrift">' + data[0].overskrift + '</div>') { $(this).hide().appendTo('updateMe').slideDown(1000); } //alert(data[0].overskrift); }); </script>

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• custom Filter Android won't show me the results

  - by TiGer

  Hi, I have been implementing a class which class extends ArrayAdapter and implements Filterable. The filtering part (in the performFiltering method()) seems to go ok, it fills the FilterResults object just as expected. But then I think I'm not doing it right on how to publish the results, atm I have : protected void publishResults(CharSequence prefix, FilterResults results) { // NOTE: this function is *always* called from the UI thread. subItems = (Vector)results.values; notifyDataSetChanged(); } But this simply won't "populate" my List with the received data. So now my question is how do I populate my List with the received results ? Do I have to do that programmatically ?

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• Could/Should I use static classes in asp.net/c# for shared data?

  - by death.au

  Here's the situation I have: I'm building an online system to be used by school groups. Only one school can log into the system at any one time, and from that school you'll get about 13 users. They then proceed into a educational application in which they have to co-operate to complete tasks, and from a code point of view, sharing variables all over the place. I was thinking, if I set up a static class with static properties that hold the variables that are required to be shared, this could save me having to store/access the variables in/from a database, as long as the static variables are all properly initialized when the application starts and cleaned up at the end. Of course I would also have to put locks on the get and set methods to make the variables thread safe. Something in the back of my mind is telling me this might be a terrible way of going about things, but I'm not sure exactly why, so if people could give me their thoughts for or against using a static class in this situation, I would be quite appreciative.

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• iPhone SDK SDL_openAudio with Multitasking Support

  - by brokedid

  Hello, I'm playing audio from a Online Live RTPS Stream with ffmpeg(because Apple doesn't support rtsp live streaming). Now I would play my Stream in the background. I started a thread in the background and registered the music for Background support. When the Application is entering in Background the NSThread is paused, and then Resuming after returning from background. If I start playing a Music (MP3-Stream) in the Application which use official Apple Frameworks then when the App is entering Background both Streams are played. What can I do to fix this?

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• Make text appear briefly in a JPanel

  - by Roo

  Hi, I am trying to make text appear briefly before it disappears. It would be along the lines of 1) Set color to black 2) wait x amount of seconds 3) set color to background color The method I call is repaint(), which then calls paintComponent(Graphics painter). repaint() is called only if I press the space-bar. I thought of trying repaint();Thread.sleep(1000);repaint(); (I do catch the Interrupt exception, just not shown), but it only calls paintComponent once per space-bar . Is there an easy way to do this or is this something that is a bit challenging?

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• Can I safely bind to data on multi-threaded applications?

  - by Paul

  Hi everyone, I'm trying to solve a classic problem - I have a multi-threaded application which runs some processor-intensive calculations, with a GUI interface. Every time one of the threads has completed a task, I'd like to update a status on a table taskID | status I use DataGridView and BindingList in the following way: BindingList<Task> tasks; dataGridView.DataSource = tasks public class Task : INotifyPropertyChanged { ID{get;} Status{get;set;} } Can a background thread safely update a task's status? and changes will be seen in the correct order in the GUI? Second Question: When do I need to call to PropertyChanged? I tried running with and without the call, didn't seem to bother.. Third Question: I've seen on MSDN that dataGridView uses BindingSource as a mediator between DataGridView.DataSource and BindingList Is this really necessary?

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• How to call a function though Control.BeginInvoke in a signal-slot-like fashion?

  - by Dimitri C.

  I'd like a delegate that calls a function in a different thread when it is invoked. Currently, I'm using the following implementation: delegate void someFunctionDelegate(); //... someFunctionDelegate callBackFunction = someForm.SomeFunction; someForm.Invoke(someFunctionDelegate); However, I'd like a more compact form, combining both the someForm instance and the SomeForm.SomeFunction member function. I'm thinking of something like this: var callBackFunction = new AsynchronousCrossThreadDelegate(someForm, SomeForm.SomeFunction); callBackFunction(); // Should call someForm.BeginInvoke(SomeForm.SomeFunction); Is there a way to do so in C#/.NET? Update I'm looking for a solution that will work for functions with 0 or more parameters.

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• How to get ip address programactically on Debian based system?

  - by gc

  I'm trying to retrieve the ip address of the local machine in my program. The OS running is Ubuntu 8.10. I tried using gethostname() and gethostbyname to do it. All I can get is 127.0.1.1. I learned that it seems to be a Debian thing: This thread explained it. The content of my /etc/hosts file is also: 127.0.0.1 localhost 127.0.1.1 mymachine In this case, is there any other way to programactically (prefer C or C++) to get the ip address without modifying the system file on the machine? Thanks in advance. g.c.

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• NSURLSession has NSoperationqueue internally?

  - by JeffWood

  A)If NSURLSession runs task in background in iOS7,Has Apple integrated internally Queue in NSURLSession?How it works in secondary thread and also in App suspended Mode? B)What is the difference between NSURLSession and NSoperationqueue? C)If NSURLSession is the replacement of NSURLCOnnection, Can we integrate NSURLSession into NSOPerationqueue? D)Are both same? E)Can we do the same thing in NSURLSession as in NSoperationQueue? If NSURLSession is the relplacement of NSUrlconnection ,Which one is the best in all situations?What is the future of NSUrlconnection?

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