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• Exemplars of large document-centric applications with COM/XPCOM/.NET interfaces.

  - by Warren P

  I am looking for exemplars (design examples) showing the use of interfaces (aka 'protocols' for you smalltalkers) to design a document management architecture in a large Word Processor, Spreadsheet, vector graphic or publishing package, or office-productivity (non-database) application with support for as many of the following as possible: any open source project, will be ideal, and language of implementation is unimportant since I am looking for design examples, however an object oriented language with support for "interfaces" is a must. I know at least a dozen languages, and I'm willing to study any application's source. use of "interface" could loosely be applied to either XPCOM or COM interfaces, or .NET interfaces, or even the use of pure-virtual (virtual+abstract) base-classes for OOP languages that lack the ability to declare an interface distinct from a class. I am mostly looking for a robust, thorough and flexible implementation for a document, IDocument, various document views (IDocumentView), and whatever operations make sense in that case. I am particular interested in cases where the product in question is a real-world product. For example, if anybody familiar with OpenOffice can tell me if the code contains a good sample design. I am looking for design documentation that outlines the design of the interfaces for such an application. So for example, if the openoffice spreadsheet has such an interface design, then that might be the best case, because it is a widely used real-world design, with millions of users, rather than a textbook example, which is minimal, and contrived. I know that the Mozilla platform uses XPCOM, and its design is heavily "interface" oriented, but I am looking more for a "word processor" or "spreadsheet" type of document design, rather than a web-browser. I am particularly interested in the interfaces used to access to data and meta-data such as markup (attributes like bold, and italics, and font size), and the ability to search and look up named entities within a document.

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• Sql Server 2005 Check Constraint not being applied in execution when using variables

  - by DarylS

  Here is some SQL sample code: --Create 2 Sales tables with constraints based on the saledate create table Sales1(SaleDate datetime, Amount money) ALTER TABLE dbo.Sales1 ADD CONSTRAINT CK_Sales1 CHECK (([SaleDate]>='01 May 2010')) GO create table Sales2(SaleDate datetime, Amount money) ALTER TABLE dbo.Sales2 ADD CONSTRAINT CK_Sales2 CHECK (([SaleDate]<'01 May 2010')) GO --Insert some data into Sales1 insert into Sales1 (SaleDate, Amount) values ('02 May 2010', 50) insert into Sales1 (SaleDate, Amount) values ('03 May 2010', 60) GO --Insert some data into Sales2 insert into Sales2 (SaleDate, Amount) values ('30 Mar 2010', 10) insert into Sales2 (SaleDate, Amount) values ('31 Mar 2010', 20) GO --Create a view that combines these 2 tables create VIEW [dbo].[Sales] AS SELECT SaleDate, Amount FROM Sales1 UNION ALL SELECT SaleDate, Amount FROM Sales2 GO --Get the results --Query 1 select * from Sales where SaleDate < '31 Mar 2010' -- if you look at the execution plan this query only looks at Sales2 (Which is good) --Query 2 DECLARE @SaleDate datetime SET @SaleDate = '31 Mar 2010' select * from Sales where SaleDate < @SaleDate -- if you look at the execution plan this query looks at Sales1 and Sales2 (Which is NOT good) Looking at the execution plan you will see that the two queries are differnt. For Query 1 the only table that is accessed is Sales1 (which is good). For Query 2 both tables are accessed (Which is bad). Why are these execution plans different, and how do i get Query 2 to only access the relevant table when variables are used? I have tried to add indexes for the SaleDate column and that does not seem to help.

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• Appended content using jQuery 'append' is not submitted?

  - by YourMomzThaBomb

  I'm new to jQuery so this may be a real simple answer. I have a ASP.NET project that I'm trying to dynamically add content to a span element by typing into a text box and clicking a button. Sounds simple right? Well, I can get the content to added, but when the form is submitted the span element is still empty? Why is the new data not submitted? What step am I missing? Please help. Here's some sample code: < span id="tagContainer" runat="server"< /span < input type="text" name="tag" id="tag" / < input type="button" name="AddTag" value="Add" class="button" onclick="addTag();" / function addTag() {    if ($("#tag").val() != "") {       $("#tagContainer").append('$("#tag").val()');       $("#tag").val("");    } }

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• Single Loader to multiple Sprite Possible?

  - by Jeffrey Chee

  I've looked in various resources regarding this topic, and it seems to me that I need a Loader for every Sprite which contains an image file (png). I'm trying to make a Tile Rendering System, and have created a grid of X by Y sprites, but all of them actually reference the same image file. Is there any other way to do this? (Make the sprite share the same png data file) Some sample code of what I have done. // Create an array of X * Y Loaders var cTileLoaders:Array = new Array( 100 ); // for example 10 by 10 grid var cTiles:Array = new Array( 100 ); var nIndex:int = 0; var nImgLoadCount:int = 0; for ( ; 100 > nIndex; ++nIndex ) { cTileLoaders[ nIndex ] = new Loader(); cTiles[ nIndex ] = new Sprite(); // perform more sprite initialization .... cTileLoaders[ nIndex ].contentLoaderInfo.addEventListener( Event.COMPLETE, ImageLoaded cTileLoaders[ nIndex ].Load( new URLRequest( "some image path" ) ); } // handler for image loaded function ImageLoaded( eEvent:Event ):void { ++nImgLoadCount; // when all 100 sprite data are loaded // assuming there is no i/o error if ( 100 == nImgLoadCount ) { cTiles[ nIndex ].addChild( cTileLoaders[ nIndex ].content ); } }

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• Linear Interpolation. How to implement this algorithm in C ? (Python version is given)

  - by psihodelia

  There exists one very good linear interpolation method. It performs linear interpolation requiring at most one multiply per output sample. I found its description in a third edition of Understanding DSP by Lyons. This method involves a special hold buffer. Given a number of samples to be inserted between any two input samples, it produces output points using linear interpolation. Here, I have rewritten this algorithm using Python: temp1, temp2 = 0, 0 iL = 1.0 / L for i in x: hold = [i-temp1] * L temp1 = i for j in hold: temp2 += j y.append(temp2 *iL) where x contains input samples, L is a number of points to be inserted, y will contain output samples. My question is how to implement such algorithm in ANSI C in a most effective way, e.g. is it possible to avoid the second loop? NOTE: presented Python code is just to understand how this algorithm works. UPDATE: here is an example how it works in Python: x=[] y=[] hold=[] num_points=20 points_inbetween = 2 temp1,temp2=0,0 for i in range(num_points): x.append( sin(i*2.0*pi * 0.1) ) L = points_inbetween iL = 1.0/L for i in x: hold = [i-temp1] * L temp1 = i for j in hold: temp2 += j y.append(temp2 * iL) Let's say x=[.... 10, 20, 30 ....]. Then, if L=1, it will produce [... 10, 15, 20, 25, 30 ...]

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• Recreating http request with cURL incl. files

  - by Toby

  I consistently get the error 'failed creating formpost data' from the below code, the same thing works perfectly on my local testing server, but on my shared host it throws the error. The sample part is just to simulate building the array with both files and non-file data. Essentially all I'm trying to do here is redirect the same http request to another server, but I'm running into so many troubles. $count=count($_FILES['photographs']['tmp_name']); $file_posts=array('samplesample' => 'ladeda'); for($i=0;$i<$count;$i++) { if(!empty($_FILES['photographs']['name'][$i])) { $fn = genRandomString(); $file_posts[$fn] = "@".$_FILES['photographs']['tmp_name'][$i]; } } $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,"http://myurl/wp-content/plugins/autol/rec.php"); curl_setopt($ch,CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)"); curl_setopt($ch,CURLOPT_HEADER,TRUE); curl_setopt($ch,CURLOPT_POST,TRUE); curl_setopt($ch,CURLOPT_POSTFIELDS,$file_posts); curl_exec($ch); print curl_error($ch); curl_close($ch);

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• DLL Export C/C++ 6.00 function invoked by VB6

  - by nashth

  Hi all, I have been attemptng to create a DLL with C/C++ that can be accessed by VB6, and that's right I get error "453 Can't find DLL entry point myFunctionName in myDllName.dll" upon calling the function from a VB6 app. After searching the Web, including this site, I see that I am not alone, and I have tried the various solutions posted but error "453" is unexcapable. This is Not a COMM dll, and I believe that is possible when created via C/C++. In any case, please help, if you can. Please refer to the following simple test case below: The DLL created as a C/C++ 6.00 Win32 Dynamic-Link Library: #include // Note that I did try the line below rather than the def file, but to no avail... // #pragma comment(linker, "/EXPORT:ibask32=_ibask32@0") // Function definition extern "C" int __declspec(dllexport) __stdcall ibask32() { MessageBox(NULL,"String","Sample Code", NULL); return 0L; } The def file: LIBRARY "Gpib-32" EXPORTS ibask32 Now for the VB App: The following is the entire content of the startup Form1, Form_Load Option Explicit Private Sub Form_Load() Call ibask End Sub The following is a BAS module file that is added to the project: Option Explicit Declare Function ibask32 Lib "Gpib-32.dll" Alias "ibask" () As Long Sub ibask() Call ibask32 ' Note: This is the point of failure End Sub Thanks in advance if a workable solution can be provided, Tom

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• How is covariance cooler than polymorphism...and not redundant?

  - by P.Brian.Mackey

  .NET 4 introduces covariance. I guess it is useful. After all, MS went through all the trouble of adding it to the C# language. But, why is Covariance more useful than good old polymorphism? I wrote this example to understand why I should implement Covariance, but I still don't get it. Please enlighten me. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Sample { class Demo { public delegate void ContraAction<in T>(T a); public interface IContainer<out T> { T GetItem(); void Do(ContraAction<T> action); } public class Container<T> : IContainer<T> { private T item; public Container(T item) { this.item = item; } public T GetItem() { return item; } public void Do(ContraAction<T> action) { action(item); } } public class Shape { public void Draw() { Console.WriteLine("Shape Drawn"); } } public class Circle:Shape { public void DrawCircle() { Console.WriteLine("Circle Drawn"); } } public static void Main() { Circle circle = new Circle(); IContainer<Shape> container = new Container<Circle>(circle); container.Do(s => s.Draw());//calls shape //Old school polymorphism...how is this not the same thing? Shape shape = new Circle(); shape.Draw(); } } }

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• Positioning objects in views during re-orientation in iPad

  - by Arni

  iPad Gurus: Apple wants us to support all orientations. I take that to mean that a particular layout should either rotate so that all objects are positioned relatively the same OR, if that doesn't look good, then they ought to be repositioned, OR two views ought to be designed and built. If I rely on the built-in rotation mechanism, the objects either get resized or they straddle the edge of the page in one orientation or the other, or they disappear from view altogether. I can't seem to find the right settings to get the objects to align clearly so they are seen in each orientation. Repositioning leads to a lot of if statements in the View Controller. So I don't think Apple had that in mind. I tried replacing views and even view controllers in "willRotateToInterfaceOrientation" method, but that either causes crashes or the portrait views end up in landscape unexpectedly and vv. Moreover, two view controllers means double the coding for the same view. There must be proper way to handle orientation changes, but I have searched the internet and documentation and sample code in vain for something that works. How is this done properly? Thanks!

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• Have a clickable button on top of a combobox in WPF

  - by Travyguy9

  I can get a button to appear and be clickable in the drop down list of a combo box, but I cannot get the selected combo box item (the drop list is closed) to have the button be clickable. It always skips the button click and just opens the drop down list. I basically want the Button_Click event handler that I setup to be called once it is clicked. Here is my sample combo box that shows the button but is not clickable once it is in the selected item: <ComboBox x:Name="MyCombo" Width="200" Height="30" ItemsSource="{Binding ListCombo}"> <ComboBox.Resources> <DataTemplate DataType="{x:Type local:ComboItemClass}"> <StackPanel Orientation="Horizontal"> <TextBlock Text="{Binding Path=SampleText}" Width="120" /> <Button Width="20" Content="..." Click="Button_Click"/> </StackPanel> </DataTemplate> </ComboBox.Resources> </ComboBox>

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• Single-entry implementation gone wrong

  - by user745434

  I'm doing my first single-entry site and based on the result, I can't see the benefit. I've implemented the following: .htaccess redirects all requests to index.php at the root Url is parsed and each /segment/ is stored as an element in an array First segment indicates which folder to include (e.g. "users" » "/pages/users/index.php"). index.php file of each folder parses the remaining elements in the segments array until array is empty. content.php file of each folder is included if there are no more elements in the segments array, indicating that the destination file is reached Sample File structure ( folders in [] ): [root] index.php [pages] [users] index.php content.php [profile] index.php content.php [edit] index.php content.php [other-page] index.php content.php Request: http://mysite.com/users/profile/ .htaccess redirects request to http://mysite.com/index.php URL is parsed and segments array contains: [1] users, [2] profile index.php maps [1] to "pages/users/index.php", so includes that file pages/users/index.php maps [2] to pages/users/profile/index.php, so includes that file Since no other elements in the segments array, the contents.php file in the current folder (pages/users/profile) is included. I'm not really seeing the benefit of doing this over having functions that include components of the site (e.g. include_header(), include_footer(), etc.), so I conclude that I'm doing something terribly wrong. I'm just not sure what it is.

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• Copy Word format into Outlook message

  - by Jaster

  Hi, I have an outlook automation. I would like to use a Word document as template for the message content. Lets say i have some formatted text containing tables, colors, sizes, etc. Now I'd like to copy/paste this content into an Outlook message object.I'm used to the interop stuff, i just have no idea how to copy/paste this correctly. Here is some Sample Code (no cleanup): String path = @"file.docx"; String savePath = @"file.msg"; Word.Application wordApp = new Word.Application(); Word.Document currentDoc = wordApp.Documents.Open(path); Word.Range range = currentDoc.Range(0, m_CurrentDoc.Characters.Count); String wordText = range.Text; oApp = new Outlook.Application(); Outlook.NameSpace ns = oApp.GetNamespace("MAPI"); ns.Logon("MailBox"); Outlook._MailItem oMsg = oApp.CreateItem(Outlook.OlItemType.olMailItem); oMsg.To = "[email protected]"; oMsg.Body = wordtext; oMsg.SaveAs(savePath); Using Outlook/Word 2007, however the word files still mayb in 2000/2003 format (.doc). Visual Studio 2010 with .net 4.0 (should obvious due to the samplecode). Any suggestions?

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• NHibernate Entity code conversion from #C to VB.Net

  - by CoderRoller

  Hello and thanks for your help in advance. I am starting on the NHibernate world and i am experimenting with the NHibernate CookBook recipes, i am trying to set a base entity class for my entities and this is the C# code for this. I would like to know whats the VB.NET version so i can implement it in my sample project. This is the C# code: public abstract class Entity<TId> { public virtual TId Id { get; protected set; } public override bool Equals(object obj) { return Equals(obj as Entity<TId>); } private static bool IsTransient(Entity<TId> obj) { return obj != null && Equals(obj.Id, default(TId)); } private Type GetUnproxiedType() { return GetType(); } public virtual bool Equals(Entity<TId> other) { if (other == null) return false; if (ReferenceEquals(this, other)) return true; if (!IsTransient(this) && !IsTransient(other) && Equals(Id, other.Id)) { var otherType = other.GetUnproxiedType(); var thisType = GetUnproxiedType(); return thisType.IsAssignableFrom(otherType) || otherType.IsAssignableFrom(thisType); } return false; } public override int GetHashCode() { if (Equals(Id, default(TId))) return base.GetHashCode(); return Id.GetHashCode(); } } I tried using an online converter but puts a Nothing reference in place of default(TId) that doesn't seem right to me that's why I request for help: Private Shared Function IsTransient(obj As Entity(Of TId)) As Boolean Return obj IsNot Nothing AndAlso Equals(obj.Id, Nothing) End Function I Would appreciate the insight you may give me on the subject.

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• how to skip first 3 row of text file.

  - by Dilantha Chamal

  hey when i reading the text file using java, how can i skip first 3 rows of the text file. Show me how to do that. public class Reader { public static void main(String[] args) { BufferedReader reader; try { reader = new BufferedReader(new InputStreamReader( new FileInputStream("sample.txt"))); Map<String, Integer result = new LinkedHashMap<String, Integer(); Map<String, Integer result2 = new LinkedHashMap<String, Integer(); while (reader.ready()) { String line = reader.readLine(); /split a line with spaces/ String[] values = line.split("\s+"); /set a key date\tanimal/ String key = values[0] + "\t" + values[1]; int sum = 0; int count = 0; /get a last counter and sum/ if (result.containsKey(key)) { sum = result.get(key); count = result2.get(key); } else{ } /increment sum a count and save in the map with key/ result.put(key, sum + Integer.parseInt(values[2])); result2.put(key, count + 1); } /interate and print new output/ for (String key : result.keySet()) { Integer sum = result.get(key); Integer count = result2.get(key); System.out.println(key + " " + sum + "\t" + count); } reader.close(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }

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• Javascript code refactoring and assessment

  - by neitony

  I'm using javascript to toggle the display state of some objects based on the time of day. A sample of the code is given below. I was wondering if anyone could give a suggestion as to how I can refactor this code while at the same time improving the logic. switch(tcode) { case 'eur' : eur.setAttribute('style', 'display:block; opacity:0.5'); us.style.display = 'none'; asia.style.display = 'none'; us_inactive.style.display = 'block'; asia_inactive.style.display = 'block'; break; case 'us' : us.style.display = 'block'; eur.style.display = 'none'; asia.style.display = 'none'; eur_inactive.style.display = 'block'; asia_inactive.style.display = 'block'; break; case 'asia' : asia.setAttribute('style', 'display:block; opacity:0.5'); us.style.display = 'none'; eur.style.display = 'none'; eur_inactive.style.display = 'block'; us_inactive.style.display = 'block';

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• What are the benefits of `while(condition) { //work }` and `do { //work } while(condition)`?

  - by Shaharyar

  I found myself confronted with an interview question where the goal was to write a sorting algorithm that sorts an array of unsorted int values: int[] unsortedArray = { 9, 6, 3, 1, 5, 8, 4, 2, 7, 0 }; Now I googled and found out that there are so many sorting algorithms out there! Finally I could motivate myself to dig into Bubble Sort because it seemed pretty simple to start with. I read the sample code and came to a solution looking like this: static int[] BubbleSort(ref int[] array) { long lastItemLocation = array.Length - 1; int temp; bool swapped; do { swapped = false; for (int itemLocationCounter = 0; itemLocationCounter < lastItemLocation; itemLocationCounter++) { if (array[itemLocationCounter] > array[itemLocationCounter + 1]) { temp = array[itemLocationCounter]; array[itemLocationCounter] = array[itemLocationCounter + 1]; array[itemLocationCounter + 1] = temp; swapped = true; } } } while (swapped); return array; } I clearly see that this is a situation where the do { //work } while(cond) statement is a great help to be and prevents the use of another helper variable. But is this the only case that this is more useful or do you know any other application where this condition has been used?

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• wget not completely processing the http call

  - by user578458

  Here is a wget command that executes a HTML / PHP stack report suite that is hosted by a third party - we don't have control over the PHP or HTML page wget --no-check-certificate --http-user=/myacc --http-password=mypass -O /tmp/myoutput.csv "https://myserver.mydomain.com/mymodule.php?myrepcode=9999&action=exportcsv&admin=myappuserid&password=myappuserpass&startdate=2011-01-16&enddate=2011-01-16&reportby=mypreferredview" All the elements are working perfectly: --http-user / --http-pass as offered by a browsers standard popup for username and password prompt -O /tmp/myoutput.csv - the output file of interest https://myserver.mydomain.com/mymodule.php?myrepcode=9999&action=exportcsv&admin=myappuserid&password=myappuserpass&startdate=2011-01-16&enddate=2011-01-16&reportby=mypreferredview" The file generated on the fly by the parameters myrepcode=9999 - a reference to the report in question action=exportcsv internally written in the function admin=myappuserid the third party operats SSL to access the site - then internal username and password stored in a database to access the functions of the site) password=myappuserpass startdate=2011-01-16 this and end data are parameters specific to the report 9999 enddate=2011-01-16 reportby=mypreferredview This is an option in the report that facilitates different levels of detail or aggregation The problem is that the reportby parameter is a radio button selection in a list of 5 selections (sure I enough the default is highest level of aggregation , I want the last one which is the most detailed) Here is a sample of the HTML page code for the options of reportby View by The Default My Least Preferred My Second Least Preferred My Third Least Preferred My Preferred No matter which of the reportby items I select in the wget statement - thedefault is always executed. Questions 1) Has anyone come across this notation in HTML (id=inputname[inputelement]) I spoke to a senior web developer and he has never seen this notation for inputs (id=inputname[inputelement]) - and w3schools do not appear familiar with this either based on an extensive search 2) Can a wget command select a none default radio item when executing the command ? This probably will be initially received with a "Use CURL" response- however the wget approach works very well in the limited environment I am operating in - particularly as I need to download 10000 of these such items. Thanks ahead of response

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• Merging two arrays in PHP

  - by Industrial

  Hi everyone, I am trying to create a new array from two current arrays. Tried array_merge, but it will not give me what I want. $array1 is a list of keys that I pass to a function. $array2 holds the results from that function, but doesn't contain any non-available resuls for keys. So, I want to make sure that all requested keys comes out with 'null':ed values, as according to the shown $result array. It goes a little something like this: $array1 = array('item1', 'item2', 'item3', 'item4'); $array2 = array( 'item1' => 'value1', 'item2' => 'value2', 'item3' => 'value3' ); Here's the result I want: $result = array( 'item1' => 'value1', 'item2' => 'value2', 'item3' => 'value3', 'item4' => '' ); It can be done this way, but I don't think that it's a good solution - I really don't like to take the easy way out and suppress PHP errors by adding @:s in the code. This sample would obviously throw errors since 'item4' is not in $array2, based on the example. foreach ($keys as $k => $v){ @$array[$v] = $items[$v]; } So, what's the fastest (performance-wise) way to accomplish the same result?

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• Stop lazy-loading images?

  - by Greg

  Here's the issue – I followed along with the Apple lazy-load image sample code to handle my graphical tables. It works great. However, my lazy-load image tables are being stacked within a navigation controller so that you can move in and out of menus. While all this works, I'm getting a persistent crash when I move into a table then move immediately back out of it using the "back" button. This appears to be a result of the network connections loading content not being closed properly, or calling back to their released delegates. Now, I've tried working through this and carefully setting all delegates to nil and calling close on all open network connections before releasing a menu. However, I'm still getting the error. Also – short posting my entire application code into this post, I can't really post a specific code snippet that illustrates this situation. I wonder if anyone has ideas for tasks that I may be missing? Do I need to do anything to close a network connection other than closing it and setting it to nil? Also, I'm new to debugging tools – can anyone suggest a good tool to use to watch network connections and see what's causing them to fail? Thanks!

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• problem with include in PHP

  - by EquinoX

  I have a php file called Route.php which is located on: /var/www/api/src/fra/custom/Action and the file I want to include is in: /var/www/api/src/fra/custom/ So what I have inside route php is an absolute path to the two php file I want to include: <?php include '/var/www/api/src/frapi/custom/myneighborlists.php'; include '/var/www/api/src/frapi/custom/mynodes.php'; ............ ........... ?> These two file has an array of large amount of size that I want to use in Route.php. When I do vardump($global) it just returns NULL. What am I missing here? UPDATE: I did an echo on the included file and it prints something, so therefore it is included.. however I can't get access that array... when I do a vardump on the array, it just returns NULL! I did add a global $myarray inside the function in which I want to access the array from the other php file Sample myneighborlists.php: <?php $myarray = array( 1=> array(3351=>179), 2=> array(3264=>172, 3471=>139), 3=> array(3467=>226), 4=> array(3309=>211, 3469=>227), 5=> array(3315=>364, 3316=>144, 3469=>153), 6=> array(3305=>273, 3309=>171), 7=> array(3267=>624, 3354=>465, 3424=>411, 3437=>632), 8=> array(3302=>655, 3467=>212), 9=> array(3305=>216, 3306=>148, 3465=>505), 10=> array(3271=>273, 3472=>254), 11=> array(3347=>273, 3468=>262), 12=> array(3310=>237, 3315=>237)); ?>

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• Triangulation & Direct linear transform

  - by srand

  Following Hartley/Zisserman's Multiview Geometery, Algorithm 12: The optimal triangulation method (p318), I got the corresponding image points xhat1 and xhat2 (step 10). In step 11, one needs to compute the 3D point Xhat. One such method is Direct Linear Transform (DLT), mentioned in 12.2 (p312) and 4.1 (p88). The homogenous method (DLT), p312-313, states that it finds a solution as the unit singular vector corresponding to the smallest singular value of A, thus, A = [xhat1(1) * P1(3,:)' - P1(1,:)' ; xhat1(2) * P1(3,:)' - P1(2,:)' ; xhat2(1) * P2(3,:)' - P2(1,:)' ; xhat2(2) * P2(3,:)' - P2(2,:)' ]; [Ua Ea Va] = svd(A); Xhat = Va(:,end); plot3(Xhat(1),Xhat(2),Xhat(3), 'r.'); However, A is a 16x1 matrix, resulting in a Va that is 1x1. What am I doing wrong (and a fix) in getting the 3D point? For what its worth sample data: xhat1 = 1.0e+009 * 4.9973 -0.2024 0.0027 xhat2 = 1.0e+011 * 2.0729 2.6624 0.0098 P1 = 699.6674 0 392.1170 0 0 701.6136 304.0275 0 0 0 1.0000 0 P2 = 1.0e+003 * -0.7845 0.0508 -0.1592 1.8619 -0.1379 0.7338 0.1649 0.6825 -0.0006 0.0001 0.0008 0.0010 A = <- my computation 1.0e+011 * -0.0000 0 0.0500 0 0 -0.0000 -0.0020 0 -1.3369 0.2563 1.5634 2.0729 -1.7170 0.3292 2.0079 2.6624

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• displaying a physical webpage with frames in iframe

  - by ksa

  i have iframe in my webpage, i have done the coding part for browsing the folders and viewing files in iframe.each folder has a index.html.now i need to display the index.html in iframe.index.html page contains frames divided into 2,each from different sources.i tried to display a sample webpage without frames and it was a success,page with frames spoils the party. my code for getting the html file <% String path=request.getParameter("name"); File directory = new File(path); FileFilter fileFilter=new FileFilter() { @Override public boolean accept(File file) { return file.getName().endsWith("html"); } }; File[] files = directory.listFiles(fileFilter); for (int index = 0; index < files.length; index++) { String s= files[index].getName(); String s1=files[index].getAbsolutePath(); %> <a href="fileview?name=<%=s1%>" target="sss"><%=s%></a> <% } %> mycode for displaying the page in iframe. public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException { res.setContentType("text/html"); PrintWriter out=res.getWriter(); String name=req.getParameter("name"); res.setHeader("Content-Disposition", "inline; filename=\""+name+"\""); java.io.FileInputStream fis=new java.io.FileInputStream(name); int i; while((i=fis.read())!=-1) { out.write(i); } fis.close(); out.close(); }

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• Recursive search Linq to xml

  - by Raj Esh

  this is my sample xml. <Messages> <Conversation> <id>Z100</id> <ReplyToId></ReplyToId> <Message>Topic</Message> </Conversation> <Conversation> <id>A100</id> <ReplyToId></ReplyToId> <Message>This is a test</Message> </Conversation> <Conversation> <id>M100</id> <ReplyToId>A100</ReplyToId> <Message>What kind of test</Message> </Conversation> <Conversation> <id>A200</id> <ReplyToId>M100</ReplyToId> <Message>Stage 1</Message> </Conversation> <Conversation> <id>M200</id> <ReplyToId>A200</ReplyToId> <Message>Test result for </Message> </Conversation> </Messages> How to get the conversation list based on id using linq in C#. Say for example, If i want to get the conversation for id "A100" which has a link to other conversation based on ReplyToid.

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• Why would dynamically changing the stroke type of a GestureOverlayView cause unusual behaviour?

  - by Rob Kent

  I recently introduced multi-stroke gestures into my application. This is a preference so I set the StrokeType dynamically in Activity.OnCreate. What I have discovered is that if you change the StrokeType so that it is different to the setting in the layout file, it changes the behaviour of the GestureOverlayView in the following way. The normal behaviour is that you draw a gesture and it stays on the screen after it is drawn. When you change the stroke type dynamically however, any gesture drawn on the screen disappears immediately after the OnGestureEnded event has fired. I reloaded the sample GesturesBuilder application and confirmed it has the same problem if you add the second line shown here: GestureOverlayView overlay = (GestureOverlayView) findViewById(R.id.gestures_overlay); overlay.setGestureStrokeType(GestureOverlayView.GESTURE_STROKE_TYPE_SINGLE); overlay.addOnGestureListener(new GesturesProcessor()); } The default in the layout is MULTIPLE but changing it to single changes the behaviour. If you keep the above line but set it to what it already is, the behaviour is not affected. Is this a bug in the Android gestures library and does anyone know a workaround? Note that this is on an HTC Magic so it could also be a handset issue.

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• Invoking a SOAP ( Web Services ) from ORACLE DB

  - by Mousarules

  Dears, Kindly note that I’m trying to invoke a SOAP (web services) from ORACLE DB using pl\sql , after I have done some investigations it says that I have to use the UTL_HTTP package but It didn't work with me !!! Kindly to advice me , where should I exactly place the following SOAP in pl\SQL to be invoked .... is it posible ? SOAP 1.1 The following is a sample SOAP 1.1 request and response. The placeholders shown need to be replaced with actual values. POST /gmgwebservice/service.asmx HTTP/1.1 Host: bulk.umniah.com Content-Type: text/xml; charset=utf-8 Content-Length: length SOAPAction: "http://tempuri.org/SendSMS" <SendSMS xmlns="http://tempuri.org/"> <UserName>string</UserName> <Password>string</Password> <MessageBody>string</MessageBody> <Sender>string</Sender> <Destination>string</Destination> </SendSMS> HTTP/1.1 200 OK Content-Type: text/xml; charset=utf-8 Content-Length: length <SendSMSResponse xmlns="http://tempuri.org/"> <SendSMSResult>string</SendSMSResult> </SendSMSResponse> --This web services refers to a web site called Bulk Messaging ; the web site sends SMS to a specific mobile number by filling in some text boxes , I need it to be done from ORACLE forms when a specific action occurs ( JOB ) but I don’t know how to use it inside my pl\sql code . Hope that it’s clear ,is there something else I have to mention ?

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