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• Silverlight MediaElement Position Property Weirdness

  - by BarrettJ

  I have a MediaElement that is reporting its position incorrectly and weirdly, but consistently. It seems like when it gets to the last second of the audio (and it's always the last second, regardless if the sound is two seconds or 10), it doesn't update it's position until it finishes. Example output: Playback Progress: 0/3.99 - 0 Playback Progress: 0.01/3.99 - 0 Playback Progress: 0.03/3.99 - 0 Playback Progress: 0.06/3.99 - 1 Playback Progress: 0.07/3.99 - 1 Playback Progress: 0.08/3.99 - 2 Playback Progress: 0.11/3.99 - 2 Playback Progress: 0.14/3.99 - 3 Playback Progress: 0.19/3.99 - 4 Playback Progress: 0.23/3.99 - 5 Playback Progress: 0.25/3.99 - 6 Playback Progress: 0.28/3.99 - 7 Playback Progress: 0.3/3.99 - 7 Playback [SNIP] Playback Progress: 2.8/3.99 - 70 Playback Progress: 2.83/3.99 - 70 Playback Progress: 2.88/3.99 - 72 Playback Progress: 2.9/3.99 - 72 Playback Progress: 2.91/3.99 - 72 Playback Progress: 2.92/3.99 - 73 Playback Progress: 2.99/3.99 - 74 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3/3.99 - 75 Playback Progress: 3.99/3.99 - 100 That is the result of: WriteLine("Playback Progress: " + Position + "/" + LengthInSeconds + " - " + (int)((Position / LengthInSeconds) * 100)); public double Position { get { return my_media_element != null ? my_media_element.Position.TotalSeconds : 0; } } public double LengthInSeconds { get { return my_media_element != null ? my_media_element.NaturalDuration.TimeSpan.TotalSeconds : 0; } } Anyone have any ideas why this is occurring?

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• Jquery button.click bug?

  - by Chris

  I have the following home-grown jquery plugin: (function($) { $.fn.defaultButton = function(button) { var field = $(this); var target = $(button); if (field.attr('type').toLowerCase() != 'text') return; field.keydown(function (e) { if ((e.which || e.keyCode) == 13) { console.log('enter'); target.click(); return false; } }); } })(jQuery); I'm using it like so: $('#SignUpForm input').defaultButton('#SignUpButton'); $('#SignUpButton').click(function(e) { console.log('click'); $.ajax({ type: 'post', url: '<%=ResolveUrl("~/WebServices/ForumService.asmx/SignUp")%>', contentType: 'application/json; charset=utf-8', dataType: 'json', data: JSON.stringify({ email: $('#SignUpEmail').val(), password: $('#SignUpPassword').val() }), success: function(msg) { $.modal.close(); } }); }); The first time, it works. The second time, nothing happens. I see enter and click the first time in the firebug log, but the second time I only see the enter message. It's almost like the button's click handler is being unregistered somehow. Any thoughts?

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• iPhone: addAnnotation not working when called from another view

  - by Nic Hubbard

  I have two views, the first view has an MKMapView on it named ridesMap. The second view is just a view with a UITableView in it. When you click the save button in the second view, it calls a method from the first view: // Get my first views class MyRidesMapViewController *rideMapView = [[MyRidesMapViewController alloc] init]; // Call the method from my first views class that removes an annotation [rideMapView addAnno:newRidePlacemark.coordinate withTitle:rideTitle.text withSubTitle:address]; This correctly calls the addAnno method, which looks like: - (void)addAnno:(CLLocationCoordinate2D)anno withTitle:(NSString *)annoTitle withSubTitle:(NSString *)subTitle { Annotation *ano = [[[Annotation alloc] init] autorelease]; ano.coordinate = anno; ano.title = annoTitle; ano.subtitle = subTitle; if ([ano conformsToProtocol:@protocol(MKAnnotation)]) { NSLog(@"YES IT DOES!!!"); } [ridesMap addAnnotation:ano]; }//end addAnno This method creates an annotation which does conform to MKAnnotation, and it suppose to add that annotation to the map using the addAnnotation method. But, the annotation never gets added. I NEVER get any errors when the annotation does not get added. But it never appears when the method is called. Why would this be? It seems that I have done everything correctly, and that I am passing a correct MKAnnotation to the addAnnotation method. So, I don't get why it never drops a pin? Could it be because I am calling this method from another view? Why would that matter?

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• Strange activity stack behavior when using MapActivity

  - by AndroidDev

  I have the following activity structure in my application A simple "splash screen" activity is started when the application is fired up (let's call it "Splash"). This activity starts the main activity when the user presses a button (I will call it "Main"). Main can in turn start two activities from the menu. The first activity presents a simple form (let's call this one "Form"), the second is a MapActivity that presents a map (it is called "Map"). Main, Form, and Map are declared exactly the same in the manifest: <activity android:name="fully qualified activity class" android:screenOrientation="landscape" android:configChanges="keyboard|keyboardHidden|orientation" > <intent-filter> <action android:name="android.intent.action.DEFAULT" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> When Main is active and I start Form and press "back", Main comes up again. Pressing "back" again brings up "Splash". Nothing strange here. Now comes the strange part: when I am in Main, start Map, and press "back", Main comes up as expected. But pressing "back" again just restarts Main. A second press on "back" is needed to bring me back to Splash! So it seems that starting the Map activity somehow results in Main ending up on the activity stack twice while starting the Form activity does not! Both Form and Map are started like this: startActivity(new Intent(this, MyActivity.class)); I don not catch the back key in any activity. Any clues on what is going on or how to debug this?

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• JQueryUI with Google's CDN help

  - by TenaciousImpy

  Hi, I'm having trouble loading JQueryUI from Google's CDN. I've got an ASP.NET application that and am using this to call the scripts: <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.js" type="text/javascript"></script> <link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/ui-darkness/jquery-ui.css" rel="stylesheet" type="text/css" /> <script type="text/javascript"> $(function() { $("#accordion").accordion(); }); </script> </asp:Content> I then have a test accordion: <div id="accordion"> <h3><a href="#">First header</a></h3> <div>First content</div> <h3><a href="#">Second header</a></h3> <div>Second content</div> </div> However, this doesn't work. I used Chrome's Dev tool and I get this error: Uncaught Error: The 'accordion' plugin requires Sys.scripts.ExtendedAccordion to be loaded with a call to Sys.require() first I'm also using MS' Ajax CDN in my masterpage, so could that be causing a problem? Thanks

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• "Public" nested classes or not

  - by Frederick

  Suppose I have a class 'Application'. In order to be initialised it takes certain settings in the constructor. Let's also assume that the number of settings is so many that it's compelling to place them in a class of their own. Compare the following two implementations of this scenario. Implementation 1: class Application { Application(ApplicationSettings settings) { //Do initialisation here } } class ApplicationSettings { //Settings related methods and properties here } Implementation 2: class Application { Application(Application.Settings settings) { //Do initialisation here } class Settings { //Settings related methods and properties here } } To me, the second approach is very much preferable. It is more readable because it strongly emphasises the relation between the two classes. When I write code to instantiate Application class anywhere, the second approach is going to look prettier. Now just imagine the Settings class itself in turn had some similarly "related" class and that class in turn did so too. Go only three such levels and the class naming gets out out of hand in the 'non-nested' case. If you nest, however, things still stay elegant. Despite the above, I've read people saying on StackOverflow that nested classes are justified only if they're not visible to the outside world; that is if they are used only for the internal implementation of the containing class. The commonly cited objection is bloating the size of containing class's source file, but partial classes is the perfect solution for that problem. My question is, why are we wary of the "publicly exposed" use of nested classes? Are there any other arguments against such use?

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• C++ Newbie: Passing an fstream to a function to read data

  - by vgm64

  I have a text file named num.txt who's only contents is the line 123. Then I have the following: void alt_reader(ifstream &file, char* line){ file.read(line, 3); cout << "First Time: " << line << endl; } int main() { ifstream inFile; int num; inFile.open("num.txt"); alt_reader(inFile, (char*)&num); cout << "Second Time: " << num << endl; } The output is: First Time: 123 Second Time: 3355185 Can you help me figure out how to get an fstream that is read in a function still assign the variable in main? I'm doing this because alt_reader really has a lot more to it, but this is the part I'm stuck on. Thanks a lot for the help.

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• SQL Where Clause Against View

  - by Adam Carr

  I have a view (actually, it's a table valued function, but the observed behavior is the same in both) that inner joins and left outer joins several other tables. When I query this view with a where clause similar to SELECT * FROM [v_MyView] WHERE [Name] like '%Doe, John%' ... the query is very slow, but if I do the following... SELECT * FROM [v_MyView] WHERE [ID] in ( SELECT [ID] FROM [v_MyView] WHERE [Name] like '%Doe, John%' ) it is MUCH faster. The first query is taking at least 2 minutes to return, if not longer where the second query will return in less than 5 seconds. Any suggestions on how I can improve this? If I run the whole command as one SQL statement (without the use of a view) it is very fast as well. I believe this result is because of how a view should behave as a table in that if a view has OUTER JOINS, GROUP BYS or TOP ##, if the where clause was interpreted prior to vs after the execution of the view, the results could differ. My question is why wouldn't SQL optimize my first query to something as efficient as my second query?

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• Newbie question: How do you layout an icon, 2 text lines and a button?

  - by Keith Barrows

  I am trying to extend a sample I found at http://developer.android.com/resources/articles/layout-tricks-efficiency.html. I am a brand new MonoDroid developer, just installed it yesterday, and trying to jump right into UI design and so far it is not clicking for me completely. I have this main.xml: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="?android:attr/listPreferredItemHeight" android:padding="6dip"> <ImageView android:id="@+id/icon" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentTop="true" android:layout_alignParentBottom="true" android:layout_marginRight="6dip" android:src="@drawable/icon" /> <TextView android:id="@+id/secondLine" android:layout_width="200dip" android:layout_height="26dip" android:layout_toRightOf="@id/icon" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:singleLine="true" android:ellipsize="marquee" android:text="Second line which is a long line of text and needs to scroll" /> <TextView android:id="@+id/firstLine" android:layout_width="200dip" android:layout_height="wrap_content" android:layout_toRightOf="@id/icon" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:layout_above="@id/secondLine" android:layout_alignWithParentIfMissing="true" android:singleLine="true" android:ellipsize="marquee" android:gravity="center_vertical" android:text="First line" /> <Button android:id="@+id/logonButton" android:layout_width="50dip" android:layout_height="wrap_content" android:layout_toRightOf="@id/secondLine" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:gravity="center_vertical" android:text="Login" /> /> </RelativeLayout> What I am trying to do is have an icon on the left, 2 lines of text stacked in the middle and a button on the right. When I run this in my emulator I am seeing: The second line is not scrolling. The button does not show up. Is there by any chance a simple WYSIWYG editor for layout? Or is there an app to give me a quick view of my layout XML? Something like FireBug in FireFox would be fine. Barring the slim chance there are UI helpers for Droid, what am I doing wrong? :)

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• django: grouping in an order_by query?

  - by AP257

  Hi all, I want to allocate rankings to users, based on a points field. Easy enough you'd think with an order_by query. But how do I deal with the situation where two users have the same number of points and need to share the same ranking? Should I use annotate to find users with the same number of points? My current code, and a pseudocode description of what I'd like to do, are below. top_users = User.objects.filter(problem_user=False).order_by('-points_total') # Wrong - in pseudocode, this should be # Get the highest points_total, find all the users with that points_total, # if there is more than one user, set status to 'Joint first prize', # otherwise set status to 'First prize' top_users[0].status = "First prize" if (top_users[1]): top_users[1].status = "Second prize" if (top_users[2]): top_users[2].status = "Third prize" if (top_users[3]): top_users[3:].status = "Highly commended" The code above doesn't deal with the situation where two users have the same number of points and need to share second prize. I guess I need to create a query that looks for unique values of points_total, and does some kind of nested ranking? It also doesn't cope with the fact that sometimes there are fewer than 4 users - does anyone know how I can do (in pseudocode) 'if top_users[1] is not null...' in Python?

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• Flex: View Stack Navigator

  - by Deena

  Hi, I have a component mxml file in which i have a view stack, on click of a button i navigate to the first child, now i need to navigate to the second child during onclick of a button present in the second child. All the childs are component files included within the view stack. How could this be done, Sample code is present below, --------------------Application.mxml--------------------- <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" > <mx:Script> <![CDATA[ private function loadScreen():void { navigationViewStack.selectedChild=id_offering; } ]]> </mx:Script> <mx:Button label="Save" click="loadScreen();"/> </mx:Canvas> <mx:ViewStack id="navigationViewStack" width="100%" height="100%"> <components:dashboard id="id_dashboard" label="Dashboard" /> <components:offering id="id_offering" label="Offering" /> <components:IssueSec id="id_issueSec" label = "Issues"/> </mx:ViewStack> -------------------------Ends-------------------------------------- Now in my offering.mxml file if i try to access navigationViewStack i am getting an error stating 'Access of undefined property navigationViewStack. Help me on how to access the view stack from my component mxml file. Thanks! Cheers, Deena

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• Get a JQuery function to execute after and independently of onLoad

  - by lewicki

  Is is possible to execute a JQuery function by injecting it into the page? IT CAN'T be attached to the .ready function. The reason is that the user will be uploading an image via iframe. I need JCrop to execute after I display the uploaded image. echo "<script>$('#pictures_step1_right_bottom1', window.parent.document).html('<img id=\"cropbox\" src=\"../../box/" . 'THM' . $filenameAlt . '.jpg' . "\">');</script>"; echo "<script>jQuery(function(){jQuery('#cropbox').Jcrop();});</script>"; This is executed in the iframe that is processing the image. it then sends it to the main page. This does not work however. EDIT: Ended up running a timer: function checkPic() { if($('#cropbox1').length != 0) { jQuery(function() { jQuery('#cropbox1').Jcrop(); }); } timer(); // Check size again after 1 second } function timer(){ var myTimer = setTimeout('checkPic()', 3000); // Check size every 1 second}

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• Rotation Portrait Landscape with 2 XIB

  - by Ploetzeneder

  Hello, i have got 2 GUIs and 2 Controllers 1 is called landscapeguicontroller and the second is called highguicontroller. Now generally i call the highguicontroller, and when i rotate my iphone it detects that and then it shows the landscapeguicontroller: Code: landscapeguicontroller *neu =[[landscapeguicontroller alloc] initWithNibName:nil bundle:nil]; [self presentModalViewController:neu animated:YES]; [self dismissModalViewControllerAnimated:YES]; The Problem is that then the animation pushes the new window from the beyond side of the iphone up into the window. In the Landscapeguicontroller,i have added to the the following lines: Code: (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } when i want go back to the highguicontroller i call: [self dismissModalViewControllerAnimated:YES]; that all works , but just in the second animation i see the correct "rotation animation". Have you got any suggestions? So a short Problem description: in the 1. animation from high to landscape, the landscape is pushed into the window BUT in the 2. animation from landscape to high, the rotation looks like a real rotation... i want the 1.animation look like the 2. animation best regards Ploetzeneder

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• Problems with WCF endpoints hosted from Windows Service

  - by Dilip

  I have a managed Windows Service that hosts a couple of WCF endpoints. The service is set to start automatically when the PC is restarted. On reboot I find that this line of code: ServiceHost wcfHost1 = new ServiceHost(typeof(WCFHost1)); in the OnStart() method of the service takes somewhere between 15 - 20 seconds to execute. Actually I have two such statements but the second one executes in a flash. It is the first one that takes so long. Does anyone know what could be causing the bottleneck? Because of this, sometimes the call exceeds 30 seconds and as a result the SCM thinks my service timed out while trying to initialize itself. Now, I know its easy for me to just spin off a thread to do this and return from OnStart() right away but I'd like to know what could cause this delay. This happens only when the service starts up on PC reboot. If the PC is up and running, the service starts & stops in less than a second.

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• Android -Layout Manager not showing buttons

  - by Arun

  The following is my code. I want an interface where I have a single line textbox, a multiline textbox with 2 buttons below. I want the multiline textbox to occupy all the space available after rendering the buttons and textbox. For this I created two LinearLayouts inside the main layout. The first one has vertical orientation with layout_width set to fill_parent. The second one is horizontal with fill_parent again. The first one has a textbox for which I have set the layout_height to fill parent. The second one has two textboxes OK and Cancel. When I run this application I get the UI, but the Buttons are very small. I have to set the button height manually. What am I doing wrong here. I don't want to hard code the button height. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Name"></TextView> <EditText android:layout_width="fill_parent" android:layout_height="wrap_content"></EditText> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Contents"></TextView> <EditText android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="top" /> </LinearLayout> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"> <Button android:id="@+id/okbutt" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="OK" android:layout_weight="1" /> <Button android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="Cancel" android:layout_weight="1" /> </LinearLayout> Thanks, Arun

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• Beginner SQL question: querying gold and silver tag badges in Stack Exchange Data Explorer

  - by polygenelubricants

  I'm using the Stack Exchange Data Explorer to learn SQL, but I think the fundamentals of the question is applicable to other databases. I'm trying to query the Badges table, which according to Stexdex (that's what I'm going to call it from now on) has the following schema: Badges Id UserId Name Date This works well for badges like [Epic] and [Legendary] which have unique names, but the silver and gold tag-specific badges seems to be mixed in together by having the same exact name. Here's an example query I wrote for [mysql] tag: SELECT UserId as [User Link], Date FROM Badges Where Name = 'mysql' Order By Date ASC The (slightly annotated) output is: as seen on stexdex: User Link Date --------------- ------------------- // all for silver except where noted Bill Karwin 2009-02-20 11:00:25 Quassnoi 2009-06-01 10:00:16 Greg 2009-10-22 10:00:25 Quassnoi 2009-10-31 10:00:24 // for gold Bill Karwin 2009-11-23 11:00:30 // for gold cletus 2010-01-01 11:00:23 OMG Ponies 2010-01-03 11:00:48 Pascal MARTIN 2010-02-17 11:00:29 Mark Byers 2010-04-07 10:00:35 Daniel Vassallo 2010-05-14 10:00:38 This is consistent with the current list of silver and gold earners at the moment of this writing, but to speak in more timeless terms, as of the end of May 2010 only 2 users have earned the gold [mysql] tag: Quassnoi and Bill Karwin, as evidenced in the above result by their names being the only ones that appear twice. So this is the way I understand it: The first time an Id appears (in chronological order) is for the silver badge The second time is for the gold Now, the above result mixes the silver and gold entries together. My questions are: Is this a typical design, or are there much friendlier schema/normalization/whatever you call it? In the current design, how would you query the silver and gold badges separately? GROUP BY Id and picking the min/max or first/second by the Date somehow? How can you write a query that lists all the silver badges first then all the gold badges next? Imagine also that the "real" query may be more complicated, i.e. not just listing by date. How would you write it so that it doesn't have too many repetition between the silver and gold subqueries? Is it perhaps more typical to do two totally separate queries instead? What is this idiom called? A row "partitioning" query to put them into "buckets" or something?

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• Beginner python - stuck in a loop

  - by Jeremy

  I have two begininer programs, both using the 'while' function, one works correctly, and the other gets me stuck in a loop. The first program is this; num=54 bob = True print('The guess a number Game!') while bob == True: guess = int(input('What is your guess? ')) if guess==num: print('wow! You\'re awesome!') print('but don\'t worry, you still suck') bob = False elif guess>num: print('try a lower number') else: print('close, but too low') print('game over')`` and it gives the predictable output of; The guess a number Game! What is your guess? 12 close, but too low What is your guess? 56 try a lower number What is your guess? 54 wow! You're awesome! but don't worry, you still suck game over However, I also have this program, which doesn't work; #define vars a = int(input('Please insert a number: ')) b = int(input('Please insert a second number: ')) #try a function def func_tim(a,b): bob = True while bob == True: if a == b: print('nice and equal') bob = False elif b > a: print('b is picking on a!') else: print('a is picking on b!') #call a function func_tim(a,b) Which outputs; Please insert a number: 12 Please insert a second number: 14 b is picking on a! b is picking on a! b is picking on a! ...(repeat in a loop).... Can someone please let me know why these programs are different? Thank you!

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• Execute multiple command lines with the same process using C#

  - by rima

  Hi according to my last question here I try to write a sql Editor or some thing like this,in this way I try to connect to CMD from C# and execute my command. now my problem is for example I connect to SQLPLUS after that I cant get SQLPLUS command,and the other resource I review don't satisfy me.Please help me how after I connected to Sqlplus ,I can a live my process to run my sql command? right now I use this code: //Create process System.Diagnostics.Process pProcess = new System.Diagnostics.Process(); //strCommand is path and file name of command to run pProcess.StartInfo.FileName = strCommand; //strCommandParameters are parameters to pass to program pProcess.StartInfo.Arguments = strCommandParameters; pProcess.StartInfo.UseShellExecute = false; //Set output of program to be written to process output stream pProcess.StartInfo.RedirectStandardOutput = true; //Optional pProcess.StartInfo.WorkingDirectory = strWorkingDirectory; //Start the process pProcess.Start(); //Get program output string strOutput = pProcess.StandardOutput.ReadToEnd(); //Wait for process to finish pProcess.WaitForExit(); but i customize it.I separate the initialize, i mean i just create process object one time,but I still have problem. to run the second command I use these codes for second time calling: pProcess.StartInfo.FileName = strCommand; //strCommandParameters are parameters to pass to program pProcess.StartInfo.Arguments = strCommandParameters; //Start the process pProcess.Start(); //Get program output string strOutput = pProcess.StandardOutput.ReadToEnd(); //Wait for process to finish pProcess.WaitForExit(); Thanks in advance

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• Android - Linear Layout arrangement, not positioning as expected

  - by Arun

  The following is my code. I want an interface where I have a single line textbox, a multiline textbox with 2 buttons below. I want the multiline textbox to occupy all the space available after rendering the buttons and textbox. For this I created two LinearLayouts inside the main layout. The first one has vertical orientation with layout_width set to fill_parent. The second one is horizontal with fill_parent again. The first one has a textbox for which I have set the layout_height to fill parent. The second one has two textboxes OK and Cancel. When I run this application I get the UI, but the Buttons are very small (about 5px in height). I have to set the button height manually. What am I doing wrong here. I don't want to hard code the button height. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_weight="1"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Name"></TextView> <EditText android:layout_width="fill_parent" android:layout_height="wrap_content"></EditText> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Contents"></TextView> <EditText android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="top" /> </LinearLayout> <LinearLayout android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_weight="1"> <Button android:id="@+id/okbutt" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="OK" android:layout_weight="1" /> <Button android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="Cancel" android:layout_weight="1" /> </LinearLayout> Thanks, Arun

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• Impact of ordering of correlated subqueries within a projection

  - by Michael Petito

  I'm noticing something a bit unexpected with how SQL Server (SQL Server 2008 in this case) treats correlated subqueries within a select statement. My assumption was that a query plan should not be affected by the mere order in which subqueries (or columns, for that matter) are written within the projection clause of the select statement. However, this does not appear to be the case. Consider the following two queries, which are identical except for the ordering of the subqueries within the CTE: --query 1: subquery for Color is second WITH vw AS ( SELECT p.[ID], (SELECT TOP(1) [FirstName] FROM [Preference] WHERE p.ID = ID AND [FirstName] IS NOT NULL ORDER BY [LastModified] DESC) [FirstName], (SELECT TOP(1) [Color] FROM [Preference] WHERE p.ID = ID AND [Color] IS NOT NULL ORDER BY [LastModified] DESC) [Color] FROM Person p ) SELECT ID, Color, FirstName FROM vw WHERE Color = 'Gray'; --query 2: subquery for Color is first WITH vw AS ( SELECT p.[ID], (SELECT TOP(1) [Color] FROM [Preference] WHERE p.ID = ID AND [Color] IS NOT NULL ORDER BY [LastModified] DESC) [Color], (SELECT TOP(1) [FirstName] FROM [Preference] WHERE p.ID = ID AND [FirstName] IS NOT NULL ORDER BY [LastModified] DESC) [FirstName] FROM Person p ) SELECT ID, Color, FirstName FROM vw WHERE Color = 'Gray'; If you look at the two query plans, you'll see that an outer join is used for each subquery and that the order of the joins is the same as the order the subqueries are written. There is a filter applied to the result of the outer join for color, to filter out rows where the color is not 'Gray'. (It's odd to me that SQL would use an outer join for the color subquery since I have a non-null constraint on the result of the color subquery, but OK.) Most of the rows are removed by the color filter. The result is that query 2 is significantly cheaper than query 1 because fewer rows are involved with the second join. All reasons for constructing such a statement aside, is this an expected behavior? Shouldn't SQL server opt to move the filter as early as possible in the query plan, regardless of the order the subqueries are written?

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• PHP Performance Metrics

  - by bigstylee

  I am currently developing a PHP MVC Framework for a personal project. While I am developing the framework I am interested to see any notable performance by implementing different techniques for optimization. I have implemented a crude BenchMark class that logs mircotime. The problem is I have no frame of reference for execution times. I am very near the beginnig of this project with a database connection and a few queries but no output (bar some debugging text and BenchMark log). I have a current execution time of 0.01917 seconds. I was expecting this to be lower but as I said before I have no frame of reference. I appreciate there are many variables to take into account when juding performance but I am hoping to find some sort of metric to a) techniques to measure performance for example requests per second and b) compare results for example; how a "moderately" sized PHP application on a "standard" webserver will perform. I appreciate "moderately" and "standard" are very subjective words so perhaps a table of known execution times for a particular application (eg StackOverFlow's executing time). What are other techniques of measuring performance are there other than execution time? When looking at MVC Framework Performance Comparisom it talks about Requests Per Second (RPS). How is this calculated? I am guessing with my current execution time of 0.01917 seconds can handle 52 RPS (= 1 / 0.01917 ). This seems to be significantly lower than that quoted on the graph especially when you consider my current limited funcitonality.

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• New CATransform3DMakeRotation deletes old transformation?!

  - by david

  I added a CATransform3DMakeRotation to a layer. When I add another one it deletes the old one? The first one: [UIView beginAnimations:@"rotaty" context:nil]; [UIView setAnimationDuration:0.5]; [UIView setAnimationDelegate:self]; CGAffineTransform transform = CGAffineTransformMakeRotation(-3.14); kuvert.transform = CGAffineTransformRotate(transform, DegreesToRadians(134)); kuvert.center = CGPointMake(kuvert.center.x-70, kuvert.center.y+100); [UIView commitAnimations]; and the second one: CABasicAnimation *topAnim = [CABasicAnimation animationWithKeyPath:@"transform"]; topAnim.duration=1; topAnim.repeatCount=0; topAnim.fromValue = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(0.0, 0, 0, 0)]; float f = DegreesToRadians(180); // -M_PI/1; topAnim.toValue=[NSValue valueWithCATransform3D:CATransform3DMakeRotation(f, 0,1, 0)]; topAnim.delegate = self; topAnim.removedOnCompletion = NO; topAnim.fillMode = kCAFillModeBoth; [topAnim setValue:@"flippy" forKey:@"AnimationName"]; [[KuvertLasche layer] addAnimation:topAnim forKey:@"flippy"]; The second one resets the view and applies itself after that. How do I fix this??

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• Most efficient way to send images across processes

  - by Heinrich Ulbricht

  Goal Pass images generated by one process efficiently and at very high speed to another process. The two processes run on the same machine and on the same desktop. The operating system may be WinXP, Vista and Win7. Detailled description The first process is solely for controlling the communication with a device which produces the images. These images are about 500x300px in size and may be updated up to several hundred times per second. The second process needs these images to display them. The first process uses a third party API to paint the images from the device to a HDC. This HDC has to be provided by me. Note: There is already a connection open between the two processes. They are communicating via anonymous pipes and share memory mapped file views. Thoughts How would I achieve this goal with as little work as possible? And I mean both work for me and the computer. I am using Delphi, so maybe there is some component available for doing this? I think I could always paint to any image component's HDC, save the content to memory stream, copy the contents via the memory mapped file, unpack it on the other side and paint it there to the destination HDC. I also read about a IPicture interface which can be used to marshall images. What are your ideas? I appreciate every thought on this!

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• Modify Executing Jar file

  - by pinkynobrain

  Hello Stack Overflow friends. I have a simple problem which i fear doesnt have a simple solution and i need advice as to how to proceed. I am developing a java application packaged as and executable JAR but it requires to modify some of its JAR file contents during execution. At this stage i hit a problem because some OS lock the file preventing writes to it. It is essential that the user sees an updated version of the jar file by the time the application exits allthough i can be pretty flexible as to how to achieve this. A clean and efficient solution is obviously prefereable but portability is the only hard requirement. The following are three approaches i can see to solving the problem, feel free to comment on them or suggest others. Tell Java to unlock the JAR file for writing(this doesnt seem possible but it would be the easyest solution) Copy the executable class files to a tempory file on application startup, use a class loader to load these files and unload the ones from the initial JAR file.(Not had much experience with the classloaders but hopefully the JVM would then be smart enough to realize that the original JAR is nolonger in use and so unlock it) Put a Second executable JAR File inside the First, on startup extract the inner jar to e temporaryfile, invoke a new java process and pass it the location of the Outer JAR, first process exits, second process modifys the Outer jar unincumbered.(This will work but im not sure there is a platform independant way of one java app invoking another) I know this is a weird question but any help would be appreciated.

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• NHibernate flush should save only dirty objects

  - by Emilian

  Why NHibernate fires an update on firstOrder when saving secondOrder in the code below? I'm using optimistic locking on Order. Is there a way to tell NHibernate to update firstOrder when saving secondOrder only if firstOrder was modified? // Configure var cfg = new Configuration(); var configFile = Path.Combine( AppDomain.CurrentDomain.BaseDirectory, "NHibernate.MySQL.config"); cfg.Configure(configFile); // Create session factory var sessionFactory = cfg.BuildSessionFactory(); // Create session var session = sessionFactory.OpenSession(); // Set session to flush on transaction commit session.FlushMode = FlushMode.Commit; // Create first order var firstOrder = new Order(); var firstOrder_OrderLine = new OrderLine { ProductName = "Bicycle", ProductPrice = 120.00M, Quantity = 1 }; firstOrder.Add(firstOrder_OrderLine); // Save first order using (var tx = session.BeginTransaction()) { try { session.Save(firstOrder); tx.Commit(); } catch { tx.Rollback(); } } // Create second order var secondOrder = new Order(); var secondOrder_OrderLine = new OrderLine { ProductName = "Hat", ProductPrice = 12.00M, Quantity = 1 }; secondOrder.Add(secondOrder_OrderLine); // Save second order using (var tx = session.BeginTransaction()) { try { session.Save(secondOrder); tx.Commit(); } catch { tx.Rollback(); } } session.Close(); sessionFactory.Close();

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