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• What's the output of the following code after removing errors?

  - by asdf

  Class A { public A() { system.out.println("con call"); } static { system.out.println("static call"); } { system.out.println("ins call"); } public static void main(string[] args) { new A(); new A(); } }

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• How to Read a specific element value from XElement in LINQ to XML

  - by Happy

  I have an XElement which has content like this. <Response xmlns="someurl" xmlnsLi="thew3url"> <ErrorCode></ErrorCode> <Status>Success</Status> <Result> <Manufacturer> <ManufacturerID>46</ManufacturerID> <ManufacturerName>APPLE</ManufacturerName> </Manufacturer> //More Manufacturer Elements like above here </Result> </Response> How will i read the Value inside Status element ? I tried XElement stats = myXel.Descendants("Status").SingleOrDefault(); But that is returning null.

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• What should i use to adjust screen brightness with c++ code?

  - by user192390

  I tried gamma ramp, but it simply changes the temperature of the image, while i need some kind of analogue to the brightness control of a display itself.

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• string interning - should this code only create 10 strings in memory?

  - by CodingThunder

  Seems to create a lot more. Please advice why or how to intern correctly here. Thanks IList<string> list = new List<string>(10000); for (int i = 0; i < 10000; i++) { for (int k = 0; k < 10; k++) { list.Add(string.Intern(k.ToString())); } } Console.WriteLine("intern Done"); Console.ReadLine();

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• jsjac openfire chat issue

  - by user1246979

  I am trying to use openFire + jsjac for my application as chat option. I have installed openfire in my local machine and it is running fine on http://127.0.0.1:4040/ and i have downloaded jsjac version 1-3-4. 1) when I run sampleClient.html file directly [URL: C:\tomcat\webapps\jsjac\examples\simpleclient.html] I am able to connect sampleClient with openFire. Select Http Binding http Base : http://127.0.0.1:7070/http-bind/ jabber server : 127.0.0.1 username : admin password : ** 2) But when I put jsjac folder in tomcat/webapps/ directory, I access sampleClient through http://127.0.0.1:8080/jsjac/examples/sampleClient.html, at that time using above setting (which i have used in step 1) it is giving error "Service unavailable". In step 1 when though I am connected with openFire, when I send a message it displays only "message received from admin@localhost", but it does not display the actual message.. I need your advice on these problems... Thanks.

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• simple query Delete records in a table based on count logic

  - by user1905941

  a table with a pk and status column which is having values as 'Y','N','NULL' Query: get the count of records with status column as 'Y', if this count exceeds 1% of total count of records then dont delete , else delete the records in the table. i tried like this Declare v_count Number; v_count1 Number; BEGIN v_count := select count(*) from temp; v_count1 := select count(*) from temp where status = 'Y' ; v_count := v_count + ((0.1) * (v_count)) if (v_count1 > v_count) { insert into temp1 values(pk,status) } else { Delete from temp ; } END;

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• Access different columns from LINQ resultset

  - by Piyush

  I have a query which returns multiple columns from the database using LINQ var donors = from d2 in db.Donors where d2.Status == "Pending" select new { donorID = d2.donorID, bloodGroup = d2.bloodGroup, contactNo = d2.contactMobile, status = d2.Status }; now I want to display the results in different Labels accessing one column value from donors resultset. ex: Label1.Text = donorID; Label2.Text = bloodGroup; ...and so on please help me achieve this.

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• iPhone best location for code used by more than one viewcontroller?

  - by Scott Pendleton

  The more I develop iPhone apps, the more reusable functions I write. At the moment I just copy them into the .m files that need them. But would it be better to have a separate .m file and #import it instead? I don't wish to compile a library, I just want to know how other folks have handled this. Thanks.

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• C++ how position indpendent code works for virtual function calls and more..?

  - by 0xDEAD BEEF

  How does PIC work for shared libraries which use virtual classes (ARM?). Is there any workaround so that i can access programm class object from shared library or vice versa?

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• Forcing a PictureBox to retain its image if the image was drawn on using code in vb.net

  - by Cyclone

  My pictureboxes sometimes clear of all drawings when they are done creating the image, or sometimes halfway through. Calling GC.Collect() before the drawing starts lets it draw MORE before it clears, but how can I stop it from clearing entirely? This is in vb.net Thanks!

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• Unable to return/process JSON in JQuery $.get()

  - by shyam

  I have a problem returning/processing JSON data while calling $.get() function. Here's the code: JQuery: $.get("script.php?", function(data) { if (data.status) { alert('ok'); } else { alert(data.error); } },'json'); PHP if ($r) { $ret = array("status"=>true); } else { $ret = array("status"=>false,"error"=>$error); } echo json_encode( $ret ); So this is the code. But the response is always taken as string in the jquery. data.status and data.error is undefined.

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• How to strip debug code during compile time in C++?

  - by juvenis

  Say I have a C++ function debugPrint(int foo). How can I most conveniently strip that from release builds? I do not want to surround every call to debugPrint with #ifdefs as it would be really time consuming. On the other hand, I want to be 100% sure that the compiler strips all the calls to that function, and the function itself from release builds. The stripping should happen also, if it's called with a parameter that results from a function call. E.g., debugPrint(getFoo());. In that case I want also the getFoo() call to be stripped. I understand that function inlining could be an option, but inlining is not guaranteed to be supported.

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• SQLite issues, escaping certain characters...

  - by CODe

  I'm working on my first database application. It is a WinForms application written in C# using a SQLite database. I've come across some problems, when a apostrophe is used, my SQLite query fails. Here is the structure of my queries. string SQL = "UPDATE SUBCONTRACTOR SET JobSite = NULL WHERE JobSite = '" + jobSite + "'"; For instance, if an apostrophe is used in the jobSite var, it offsets the other apostrophes in the command, and fails. So my questions are: 1. How do I escape characters like the apostrophe and semicolon in the above query example? 2. What characters do I need to escape? I know I should escape the apostrophe, what else is dangerous? Thanks for your help!

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• How do I check if a process is running from c++ code ?

  - by Maciek

  Hey all, I'm writing a C++ app that will communicate with another process via boost::interprocess, however I need to check if the other process is actually running first - as the other process is responsible for creating the inter-process shared memory. How do I check if the other process is running ? folks, I'm specifically required to check other processes

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• What is the best way to write class template-like generic code in C?

  - by Ribtoks

  I need to write AVL-tree with generic type in C. The best way I know is to use [ void* ] and to write some functions for creating, copying, assignment and destruction. Please, tell me some better way.

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• Is there an equivalent of Mac OS X "open" command that can be called from C++/Objective-C code?

  - by phjr

  On Mac OS X there is a very useful "open" command which launches an application suitable for opened file type. Is there some C++/Objective-C function on Mac which does the same? Note: I know I could launch an "open" process. I'm just not sure if it's the best option.

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• Is it possible to add code to a compiled SWF?

  - by acidzombie24

  I asked this question about passing keystrokes to the page. Is there a simple way for me to add this to an already compiled swf?

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• Why does the compiler complain "while expected" when I try to add more code?

  - by user1893578

  Write a program with a word containing @ character as an input. If the word doesn't contain @, it should prompt the user for a word with @. Once a word with @ is read, it should output the word then terminate. This is what I have done so far: public class find { public static void main(String[] args) { System.out.println(" Please enter a word with @ "); Scanner scan = new Scanner(System.in); String bad = "@"; String word = scan.next(); do if (!word.contains(bad)) System.out.println(" Please try again "); else System.out.println(" " + word); while (!word.contains(bad)); } } I can get it to terminate after a word containing "@" is given as input, but if I try to add a Scanner to the line after "please try again", it says while expected.

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• Dont understand the concept of extends in URL.openConnection() in JAVA

  - by user1722361

  Hi I am trying to learn JAVA deeply and so I am digging into the JDK source code in the following lines: URL url = new URL("http://www.google.com"); URLConnection tmpConn = url.openConnection(); I attached the source code and set the breakpoint at the second line and stepped into the code. I can see the code flow is: URL.openConnection() - sun.net.www.protocol.http.Handler.openConnection() I have two questions about this First In URL.openConnection() the code is: public URLConnection openConnection() throws java.io.IOException { return handler.openConnection(this); } handler is an object of URLStreamHandler, define as blow transient URLStreamHandler handler; But URLStreamHandler is a abstract class and method openConnection() is not implement in it so when handler calls this method, it should go to find a subclass who implement this method, right? But there are a lot classes who implement this methods in sun.net.www.protocol (like http.Hanlder, ftp.Handler ) How should the code know which "openConnection" method it should call? In this example, this handler.openConnection() will go into http.Handler and it is correct. (if I set the url as ftp://www.google.com, it will go into ftp.Handler) I cannot understand the mechanism. second. I have attached the source code so I can step into the JDK and see the variables but for many classes like sun.net.www.protocol.http.Handler, there are not source code in src.zip. I googled this class and there is source code online I can get but why they did not put it (and many other classes) in the src.zip? Where can I find a comprehensive version of source code? Thanks!

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• Why does this sql code give error 1066 (Not unique table/alias: ‘customer)?

  - by aadersh patel

  SELECT customer.id, customer.firstName, account.id FROM customer, account INNER JOIN customer ON customer.id = account.customerId ORDER BY customer.id appologies for the poor editing...

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• How should onClick Listener by defined and instantiated for an Activity

  - by Code Droid

  My Activity has multiple lists so I have defined MyClickListener as below: My question is how I should instantiate this class: MyClickListener mMyClickListener = new MyClickListener(); Or maybe it is better to instantiate inside the onCreate(Bundle) and just define above. Whats considered the better way? I don't want too much in onCreate() its already full of stuff. Any thoughts on the declaration and instatiation? Whats the best way? private class MyClickListener implements OnClickListener { @Override public void onClick(View view) { } }

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• What is the oldest code you have worked/working or seen? [closed]

  - by Vishal

  Good if you can provide proof ;)

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• i need a code to prevent users from entering character instead of integer. [closed]

  - by bhavna raghuvanshi

  pls help me....

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• JavaScript: One ID, two functions. How can I do this with minimal code duplication?

  - by user1775598

  I've got an ID and I'd like to assign two functions to it. Here's what it currently looks like: document.getElementById(this.config.dragArea).addEventListener("drop", this._dropFiles, false); document.getElementById(this.config.dragArea).addEventListener("drop", this._handleFileDrop, false); How can I rewrite this file without so much duplication? I tried doing document.getElementById(this.config.dragArea).addEventListener("drop", this._dropFiles, this._handleFileDrop, false); and document.getElementById(this.config.dragArea).addEventListener("drop", function(){this._dropFiles; this._handleFileDrop}, false); All to no avail :(

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• Why does gcc warn about incompatible struct assignment with a `self = [super initDesignatedInit];' c

  - by gavinbeatty

  I have the following base/derived class setup in Objective-C: @interface ASCIICodeBase : NSObject { @protected char code_[4]; } - (Base *)initWithASCIICode:(const char *)code; @end @implementation ASCIICodeBase - (ASCIICodeBase *)initWithCode:(const char *)code len:(size_t)len { if (len == 0 || len > 3) { return nil; } if (self = [super init]) { memset(code_, 0, 4); strncpy(code_, code, 3); } return self; } @end @interface CountryCode : ASCIICodeBase - (CountryCode *)initWithCode:(const char *)code; @end @implementation CountryCode - (CountryCode *)initWithCode:(const char *)code { size_t len = strlen(code); if (len != 2) { return nil; } self = [super initWithCode:code len:len]; // here return self; } @end On the line marked "here", I get the following gcc warning: warning: incompatible Objective-C types assigning 'struct ASCIICodeBase *', expected 'struct CurrencyCode *' Is there something wrong with this code or should I have the ASCIICodeBase return id? Or maybe use a cast on the "here" line?

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