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  • Is factory method proper design for my problem?

    - by metdos
    Hello Everyone, here is my problem and I'm considering to use factory method in C++, what are your opinions ? There are a Base Class and a lot of Subclasses. I need to transfer objects on network via TCP. I will create objects in first side, and using this object I will create a byte array TCP message, and send it to other side. On the other side I will decompose TCP message, I will create object and I will add this object to a polymorphic queue.

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  • What is wrong with this c# method?

    - by bala3569
    I use this method to get file extension, public string ReturnExtension(string fileExtension) { switch (fileExtension) { case ".doc": case ".docx": return "application/ms-word"; } } When i compile it i got the error BaseClass.ReturnExtension(string)': not all code paths return a value.. Any suggestion...

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  • Using the masters method

    - by Roarke
    On my midterm I had the problem: t(n) = 8T(n/2) +n^3 and I am supposed to find its big theta notation using either the masters or alternative method. So what i did was a = 8, b = 2 k = 3 log8 (base 2) = 3 = k therefore, T(n) is big theta n^3. I got 1/3 points so i must be wrong. What did I do wrong?

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  • get request.session from a model method in django

    - by dotty
    Hay, is it possible to a get a request.session value from a model method in django? Here is what i need def html(self): Template = loader.get_template("inclusions/Template") return Template.render(Context({ 'user_id':request.session['user'].id })) user_id would be request.session['user'].id

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  • Calling javascript method from from inside object

    - by John
    I am struggling with methods in JavaScript. obj = function(){ this.getMail = function getMail (){ } //Here I would like to run the get mail once but this.getMail() or getMail() wont work } var mail = new obj(); mail.getMail(); How do I make the method in a way that I can run it both inside the object and from the outside Thanks

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  • Checking method visibility in PHP

    - by phobia
    Is there any way of checking if a class method has been declared as private or public? I'm working on a controller where the url is mapped to methods in the class, and I only want to trigger the methods if they are defined as public.

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  • ocjective-c Obtain return value from public method

    - by Felix
    I'm pretty new to objective-C (and C in general) and iPhone development and am coming from the java island, so there are some fundamentals that are quite tough to learn for me. I'm diving right into iOS5 and want to use storyboards. For now I am trying to setup a list in a UITableViewController that will be filled with values returned by a web service in the future. For now, I just want to generate some mock objects and show their names in the list to be able to proceed. Coming from java, my first approach would be to create a new Class that provides a global accessible method to generate some objects for my list: #import <Foundation/Foundation.h> @interface MockObjectGenerator : NSObject +(NSMutableArray *) createAndGetMockProjects; @end Implementation is... #import "MockObjectGenerator.h" // Custom object with some fields #import "Project.h" @implementation MockObjectGenerator + (NSMutableArray *) createAndGetMockObjects { NSMutableArray *mockProjects = [NSMutableArray alloc]; Project *project1 = [Project alloc]; Project *project2 = [Project alloc]; Project *project3 = [Project alloc]; project1.name = @"Project 1"; project2.name = @"Project 2"; project3.name = @"Project 3"; [mockProjects addObject:project1]; [mockProjects addObject:project2]; [mockProjects addObject:project3]; } And here is my ProjectTable.h that is supposed to control my ListView #import <UIKit/UIKit.h> @interface ProjectsTable : UITableViewController @property (strong, nonatomic) NSMutableArray *projectsList; @end And finally ProjectTable.m #import "ProjectsTable.h" #import "Project.h" #import "MockObjectGenerator.h" @interface ProjectsTable { @synthesize projectsList = _projectsList; -(id)initWithStyle:(UITableViewStyle:style { self = [super initWithStyle:style]; if (self) { _projectsList = [[MockObjectGenerator createAndGetMockObjects] copy]; } return self; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // only one section for all return 1; - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { NSLog(@"%d entries in list", _projectsList.count); return _projectsList.count; - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { // the identifier of the lists prototype cell is set to this string value static NSString *CellIdentifier = @"projectCell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; Project *project = [_projectsList objectAtIndex:indexPath.row]; cell.textLabel.text = project.name } So while I think everything is correctly set, I expect the tableView to show my three mock objects in its rows. But it stays empty and the NSLog method prints "0 entries in list" into the console. So what am I doing wrong? Any help is appreciated. Best regards Felix

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  • method implementation for this case in Java

    - by Thomas
    Hello, I just saw a code snippet like this: private static class DefaultErrorHandler<RT> implements ErrorHandler<RT> { public RT handle(Object[] params, Throwable e) { return Exceptions.throwUncheckedException(e); } Now I am wondering what the static method "throwUncheckedException (Throwable e)" would return exactly and how it might be implemented regarding the generics. Can anybody give me an example ?

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  • When is a parameterized method call useful?

    - by johann-christoph-jacob
    A Java method call may be parameterized like in the following code: class Test { <T> void test() { } public static void main(String[] args) { new Test().<Object>test(); // ^^^^^^^^ } } I found out this is possible from the Eclipse Java Formatter settings dialog and wondered if there are any cases where this is useful or required.

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  • How to use method hiding (new) with generic constrained class

    - by ongle
    I have a container class that has a generic parameter which is constrained to some base class. The type supplied to the generic is a sub of the base class constraint. The sub class uses method hiding (new) to change the behavior of a method from the base class (no, I can't make it virtual as it is not my code). My problem is that the 'new' methods do not get called, the compiler seems to consider the supplied type to be the base class, not the sub, as if I had upcast it to the base. Clearly I am misunderstanding something fundamental here. I thought that the generic where T: xxx was a constraint, not an upcast type. This sample code basically demonstrates what I'm talking about. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace GenericPartialTest { class ContextBase { public string GetValue() { return "I am Context Base: " + this.GetType().Name; } public string GetOtherValue() { return "I am Context Base: " + this.GetType().Name; } } partial class ContextSub : ContextBase { public new string GetValue() { return "I am Context Sub: " + this.GetType().Name; } } partial class ContextSub { public new string GetOtherValue() { return "I am Context Sub: " + this.GetType().Name; } } class Container<T> where T: ContextBase, new() { private T _context = new T(); public string GetValue() { return this._context.GetValue(); } public string GetOtherValue() { return this._context.GetOtherValue(); } } class Program { static void Main(string[] args) { Console.WriteLine("Simple"); ContextBase myBase = new ContextBase(); ContextSub mySub = new ContextSub(); Console.WriteLine(myBase.GetValue()); Console.WriteLine(myBase.GetOtherValue()); Console.WriteLine(mySub.GetValue()); Console.WriteLine(mySub.GetOtherValue()); Console.WriteLine("Generic Container"); Container<ContextBase> myContainerBase = new Container<ContextBase>(); Container<ContextSub> myContainerSub = new Container<ContextSub>(); Console.WriteLine(myContainerBase.GetValue()); Console.WriteLine(myContainerBase.GetOtherValue()); Console.WriteLine(myContainerSub.GetValue()); Console.WriteLine(myContainerSub.GetOtherValue()); Console.ReadKey(); } } }

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  • How to invoke a method of js object after invoking another method?

    - by Unitpage
    I often saw this code in jQuery. $('div').action1().delay(miliseconds).action2(); I could realize it in one level action in the following code. function $(id) { var $ = document.getElementById(id); $.action1 = function() { }; return $; } How to write the method delay() and action2() so that I could use them this way? $('div').action1().delay(miliseconds).action2();

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  • Week 15: The Telephone Game

    - by sandra.haan
    Have you ever played a game of telephone? Remember the one where you whispered something like "Once bitten, twice shy" to the person next to you, only to find that after this message has been shared around the circle the last person to repeat it says "Pastrami on Rye"? Messages can get distorted and we want to make sure that your past successes are clearly articulated which is why we have put in place a reference program for our partners. Listen in as Judson tells you how to engage with OPN in the Partner Reference program. Take advantage of the opportunity to promote your success to prospects through Oracle. Find out more and submit your nomination for a reference today. Until next time, The OPN Communications Team

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  • Rhino Mocks verify a private method is called from a public method

    - by slowcelica
    I have been trying to figure this one out, how do i test that a private method is called with rhino mocks with in the class that I am testing. So my class would be something like this. Public class Foo { public bool DoSomething() { if(somevalue) { //DoSomething; } else { ReportFailure("Failure"); } } private void ReportFailure(string message) { //DoSomeStuff; } } So my unit test is on class Foo and method DoSomething() I want to check and make sure that a certain message is passed to ReportFailure if somevalue is false, using rhino mocks.

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  • Recommendations on eReader for technical reference material

    - by Aaron Kowall
    I’ve been thinking that an eBook reader would be handy since I travel a lot.  I’m not really all that worried about taking novels and pleasure reading as much as taking along work related books and reference material. I haven’t really done a lot of research into the various options (Sony, Kindle, Nook, iPad, etc.) but am aware that not all content can be read on all readers even if it is in ePub format due to DRM. Anybody got a recommendation on which device/store combination offers the best selection of technical reference for a .Net developer with a particular interest in software process engineering? HELP!! Technorati Tags: eBook,eReader,iPad,Kindle,Nook,Sony,ePub,PDF

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  • Qt undocumented method setSharable

    - by soxs060389
    I stumbled about a method which seems to be present in all DataObjects like QList, QQueue, QHash... I even investigated so far i can see the source code of it, which is inline void setSharable(bool sharable) { if (!sharable) detach(); d->sharable = sharable; } in qlist.h (lines 117) but what effect does it have on the QList, QQueue, QHash... ? And is it in any way related to threading? (which sounds reasonable) Thanks for any answer, and please only answer if you got actual knowledge.

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  • Overload method (specifically drawRect:) without subclassing.

    - by SooDesuNe
    I'm using a container UIView to house a UIImageView and do some custom drawing. At this point I'd like to do some drawing on top of my subview. So overriding drawRect: in my container UIView will only draw below the subviews. Is there a way to overload drawRect: in my subview without subclassing it? I think method swizzling may be the answer, but I'm hoping not. (NOTE: yes, it would have been smarter to have the UIView be the subview of the UIImageView, but unfortunately I'm committed to my mistake now.)

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  • Ruby delete method (string manipulation)

    - by brianheys
    I'm new to Ruby, and have been working my way through Mr Neighborly's Humble Little Ruby Guide. There have been a few typos in the code examples along the way, but I've always managed to work out what's wrong and subsequently fix it - until now! This is really basic, but I can't get the following example to work on Mac OS X (Snow Leopard): gone = "Got gone fool!" puts "Original: " + gone gone.delete!("o", "r-v") puts "deleted: " + gone Output I'm expecting is: Original: Got gone fool! deleted: G gne fl! Output I actually get is: Original: Got gone fool! deleted: Got gone fool! The delete! method doesn't seem to have had any effect. Can anyone shed any light on what's going wrong here? :-\

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  • Why C# calls different overloaded method for different values of same type?

    - by Fabio Veronez
    Hello all, I have one doubt concerning c# method overloading call resolution. Let's suppose I have the following C# code: enum MyEnum { Value1, Value2 } public void test() { method(0); // this calls method(MyEnum) method(1); // this calls method(object) } public void method(object o) { } public void method(MyEnum e) { } Note that I know how to make it work but I would like to know why for one value of int (0) it calls one method and for another (1) it calls another. It sounds awkward since both values have the same type (int) but they are "linked" for different methods. Ps.: This is my first question here, i'm sorry if I made something wrong. =P

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  • How to add a Web Reference to a SSL web service?

    - by Matt W
    Hi, I have a web service in a C#/3.5 project which has been running fine. This is until I set the "SSL port" in IIS to 443 and set the "IIS - Directory Security - Secure Communications - Require secure channel (SSL)" option to true. Now, the web reference cannot be updated and I cannot add a new web reference to the web service in that site. When I try to view the service in a browse using just HTTP I get the "This page must be viewed over a secure channel" and when viewed with HTTPS on the front I get "This web page not available." Could someone tell me how to get a Web Reference added using Visual Studio to this secure web service, please? Thanks, Matt.

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  • VS 2010: New Add Reference dialog, tab layout and options

    - by Fabrice Marguerie
    Microsoft has just published a new free extension for Visual Studio 2010 that provides an improved Add Reference dialog, an improved tab bar, and much more.The new Add Reference dialog comes with a long-awaited feature: it's now searchable!The tab bar allows you to display the close button at the end of the bar and not on each tab. It can also sort tabs by project and alphabetically. Tab color can vary by project or according to regular expressions.I'll let you discover about the other features by yourself (HTML Copy, Triple Click, Current Line Highlighting, etc.).The name of the extension is Visual Studio Pro Power Tools. I believe it's main features will come out-of-the-box with the next version of Visual Studio.

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  • VS 2010: New Add Reference dialog, tab layout and options

    Microsoft has just published a new free extension for Visual Studio 2010 that provides an improved Add Reference dialog, an improved tab bar, and much more.The new Add Reference dialog comes with a long-awaited feature: it's now searchable!The tab bar allows you to display the close button at the end of the bar and not on each tab. It can also sort tabs by project and alphabetically. Tab color can vary by project or according to regular expressions.I'll let you discover about the other features by...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Define Instance Variable Outside of Method Defenition (ruby)

    - by Ell
    Hi all, I am developing (well, trying to at least) a Game framework for the Ruby Gosu library. I have made a basic event system wherebye each Blocks::Event has a list of handlers and when the event is fired the methods are called. At the moment the way to implement an event is as follows: class TestClass attr_accessor :on_close def initialize @on_close = Blocks::Event.new end def close @on_close.fire(self, Blocks::OnCloseArgs.new) end end But this method of implementing events seems rather long, my question is, how can I make a way so that when one wants an event in a class, they can just do this class TestClass event :on_close def close @on_close.fire(self, Blocks::OnCloseArgs.new) end end Thanks in advance, ell.

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