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• How do i get ServletContext object in a simple class file?

  - by Nitesh Panchal

  Hello, I am creating a simple web application. I need to get reference to ServletContext object in that class. How can i get it?

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• How to differentiate between two class of same name in different css on same page.

  - by Rajesh Rolen- DotNet Developer

  on my asp.net page i am linking 2 css files which are used by 2 different controls but the main problem is that one class name is same in both so they are conflicting with each other, please tell me how can i distinguish between them. Both are of jquery, 1 is slider control and another one is time picker control. and they are conflicting on their background image as i want to change background image of slider control's scroller. Please give me solution..

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• Java IDE - find all INDIRECT usages/references of a function or class?

  - by GreenieMeanie

  In Netbeans or in Eclipse, you can use "Find Usages" or "References" from the right click context menu. If a() calls b(), using the functionality from b() will show you a(). However, what I want is to be able to see some kind of tree or have an option to see all usages of a given/class or method, such that if z() calls a() that using the functionality will show both z() and a(). Any IDE plugins or external tools that can do this?

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• Implemeting 2 interfaces in a class with same method.Which interface method is overridden?

  - by Jothi

  2 Interfaces with same method names and signatures. But implmented by a single class then how the compiler will identify the which method is for which interface.In java.

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• Can u tell me how to display a composition & Dependency relationship in class diagrams Using VS 2008

  - by Pradeep

  i am trying to display a compostion and dependency relation ship in class diagram using vs 2008 but there are no diagrame associated with the above mention relation ship please help me with this

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• Implemeting 2 interfsaces in a class with same method.Which interface method is overridden?

  - by Jothi

  2 Interfaces with same method names and signatures. But implmented by a single class then how the compiler will identify the which method is for which interface.

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• If I add a public method to a C# class, do I need to recompile other assemblies using that type?

  - by Adal

  Question in the title. I'd like to avoid recompiling since the source code I'm modifying is third party and I'd like to use the original binaries where possible, and replace only the assembly which contains the class I modified. But I'm not sure if this is a safe thing to do. In C++ for example this is definitely a bad idea.

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• Is there any smart enough tool to build UML class-diagram based on not very complicated Java sources

  - by Roman

  I'm using IntelliJ IDEA and I tried its tool for building class diagram. Unfortunatelly, it draws classes from java package as well as necessary classes. That's why built diagram is very messed. Are there any more smart tool? Or, is there any way to 'turn off' drawing java classes in IDEA?

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• Paypal IPN: how get the POSTs from this class?

  - by sineverba

  I'm using this Class <?php class paypalIPN { //sandbox: private $paypal_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr'; //live site: //private $paypal_url = 'https://www.paypal.com/cgi-bin/webscr'; private $data = null; public function __construct() { $this->data = new stdClass; } public function isa_dispute() { //is it some sort of dispute. return $this->data->txn_type == "new_case"; } public function validate() { // parse the paypal URL $response = ""; $url_parsed = parse_url($this->paypal_url); // generate the post string from the _POST vars aswell as load the // _POST vars into an arry so we can play with them from the calling // script. $post_string = ''; foreach ($_POST as $field=>$value) { $this->data->$field = $value; $post_string .= $field.'='.urlencode(stripslashes($value)).'&'; } $post_string.="cmd=_notify-validate"; // append ipn command $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $this->paypal_url); //curl_setopt($ch, CURLOPT_VERBOSE, 1); //keep the peer and server verification on, recommended //(can switch off if getting errors, turn to false) curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $post_string); $response = curl_exec($ch); if (curl_errno($ch)) { die("Curl Error: " . curl_errno($ch) . ": " . curl_error($ch)); } curl_close($ch); return $response; if (preg_match("/VERIFIED/", $response)) { // Valid IPN transaction. return $this->data; } else { return false; } } } ANd i recall in this mode: public function get_ipn() { $ipn = new paypalIPN(); $result = $ipn->validate(); $logger = new Log('/error.log'); $logger->write(print_r($result)); } But I obtain only "VERIFIED" or "1" (whitout or with the print_r function). I just tried also to return directly the raw curl response with return $response; or return $this->response; or also return $this->parse_string; but everytime I receive only "1" or "VERIFIED"....... Thank you very much

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• how can I change top-margin the right way if multiple css class assigned?

  - by Radek

  I assigned these classes menu second_menu menu_about_author to ul so the html code looks like <ul class="menu second_menu menu_about_author"> I wanted this ul to have the same properties like menu and second_menu and then I wanted to move the menu_about_author little bit down. I did so by .menu_about_author { margin-top:40px; } but it didn't work any idea why the margin-top:40px; is crossed? the link to the image is [1]: http://img153.imageshack.us/img153/882/58daeef0c3c846e4a8d6321.png

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• is there a free barcode 128 class for delphi (pdf)?

  - by Tom

  Is there a free alphanumeric barcode font or class that is compatible with Delphi "PowerPDF" component ? code must be code128.

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• What's the recommended way to declare fields of a class in JavaScript?

  - by Bytecode Ninja

  Is it better to declare fields of a class in this way: function MyClass() { this.aMethod = function() { // code } } Or this way: function MyClass() { } MyClass.prototype.aMethod = function() { // code } Any why? Thanks in advance.

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• How to write unit test before the class code?

  - by Scott Faisal

  I am trying to get into the habit of writing a unit test before the actual class. What are some pointers the stack overflow community can give me along with any useful resources. Thank You

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• When should I use a struct instead of a class?

  - by Esteban Araya

  MSDN says that you should use structs when you need lightweight objects. Are there any other scenarios when a struct is preferable over a class? Edit: Some people have forgotten that: 1. structs can have methods! 2. structs have no inheritance capabilites. Another Edit: I understand the technical differences, I just don't have a good feel for WHEN to use a struct.

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• JQuery. Check value of select box and textbox with same class, Is it possible?

  - by Cesar Lopez

  I have several select boxes and textboxes with the same class and I have the following statement. if ($('.selTxtClass:visible').val() == "") { $('.selTxtClass:visible').focus(); } } If I do an alert with ($('.selTxtClass:visible').val()) it comes as undefined. I want to check that the value of these elements are empty, but I cant see what is wrong with this if statement, could you give me a hand, please? Thanks a lot.

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• iterate only through existing objects properties, not them from parent class?

  - by ajsie

  i have a class that extends another. when i iterate the current object i get all properties, even those from the superclass. i only want to iterate through the current object. how could i do that? foreach($this as $key => $value) { echo $key . ': ' . $value; }

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• How is an abstract class different from an Interface from a design point ?

  - by somaraj

  I have seen many answers in stackoverflow , but i didnt find an answere that is matching mine . Apart from all those difference , Does it makesense if we say An Abstract class abstracts the implementation of behaviour while an interface abstracts the type which implements the behaviour.

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• Only static and const varibles can be assign to a class ??

  - by numerical25

  I am learning c++. Just curious, can only Static and constant varibles be assigned a value from within the class declaration ?? is this mainly why when you assign values to normal members, they have a special way doing it void myClass::Init():member1(0), member2(1) { }

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• How to get all property names of a Groovy class?

  - by Klaim

  The title ask it all : How to get all property names of a Groovy class? Is it even possible? I thought I could use collection syntaxes with classes too be it don't seem to work.

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• How do I represent integer array in Visual Studio 2010's UML class diagrams?

  - by AndrejaKo

  How do I represent integer array in Visual Studio 2010's UML class diagrams? I'm new to UML, so I could be missing something obvious here. Should I use Is ordered and Is unique?

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• Do I have to call release on an objective-c retain class variable when setting it to a new object?

  - by Andrew Arrow

  Say I have: @property (nonatomic,retain) NSString *foo; in some class. And I call: myclass.foo = [NSString stringWithString:@"string1"]; myclass.foo = [NSString stringWithString:@"string2"]; Should I have called [myclass.foo release] before setting it to "string2" to avoid a memory leak? Or the fact that nothing is pointing to the first "string1" object anymore is good enough? And in the dealloc method [foo release] will be called.

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• How can we access the variables declared in another class without using extern ?

  - by srikanth rongali

  Can we access the integer type variables in classB which are declared in classA by not using extern? For objects I used ClassA *obj1 = [[ClassA alloc]init]; And accessed the objects of classA into class B. But, I am not able to do them with the int , float, NSTimeInterval. How can we do for them without using extern ? Thank You.

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• PHP: how can a class reference its own name?

  - by Nathan Long

  In PHP, how can a class reference its own name? For example, what would the method look like to do this? Dog::sayOwnClassName(); //echos "Dog";

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• How to get this JavaScript class member to return a value?

  - by George Edison

  I have a JavaScript class that has a method: function someClass() { this.someMethod = someClass_someMethod; } function someClass_someMethod() { // make an AJAX request } The problem is that someClass_someMethod() needs to return the value of the AJAX request. I'm using jQuery's $.getJSON() method to fetch the data. The data needs to be returned but it seems the only way to get the data is through a callback. How can this be done?

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• What should my teacher talk about in my Advanced C++ class? [advice needed]

  - by Goose Bumper

  My teacher for Advanced C++ has opened the class up for students to suggest whatever topics we want. What are some good advanced C++ topics to know? We've already covered: template metaprogramming the STL (obviously) introduction to the boost libraries Please give reasons for suggestions as well.

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