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• ListView Item Detail Screen: New or Same Activity?

  - by stormin986

  I have a listview where each item correlates to an instance of an item in an array. When the user selects an item, it will bring up a 'Details' page that reads and displays other data members of the list item. Would this be better implemented with the Details page as its own activity, or a new view within the same activity? Pros and cons of each? A new activity makes my job a little easier in terms of handling the 'back' button, but then I have the challenge of how do I pass the rest of the data structure to the new activity since I can't bundle it up (unless I serialize it).

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• Membership provider to use or not to use?????

  - by Shekhar_Pro

  Hi every one , Wish u all a Happy New Year. I am developing a website that uses facebook. Now for managing user i thought Using membrship provider. and choose'd to develop a Custom membership provider. Now my problem is that My data base schema dosn't match the Standred membership schema and the functions provided to Override take different argument than i expect. Like membership uses username as a username to log in. But i haev to use User email ID as the user name, also its searching functions is based on using Username as way to serach but i want it to search by UserID. Same Goes for User insertion, deletion, Updation.. please help me .... Edit Its just an idea, Would it be feasible to forcefully pass my values in the arguments and then handle them in my code.

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• How to set a value from another class

  - by Ram

  Its said that property should not be "Set" only and it should be "Get" as well. What should i do if I need to set value to a variable from some other class? The will keep changing so I cannot pass it through constructor. Shall I create a function for this as shown below? class A { public void SetValue() { b = new B(); b.SetTest(10); } } class B { int test; public void SetTest(int value) { test = value; } } What are the other alternatives?

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• Using try vs if in python

  - by artdanil

  Is there a rationale to decide which one of try or if constructs to use, when testing variable to have a value? For example, there is a function that returns either a list or doesn't return a value. I want to check result before processing it. Which of the following would be more preferable and why? result = function(); if (result): for r in result: #process items or result = function(); try: for r in result: #process items except TypeError: pass; Related discussion: Checking for member existence in Python

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• Web Service Security java

  - by WhoAmI

  My web service was created some time back using IBM JAX-RPC. As a part of enhancement, I need to provide some security to the existing service. One way is to provide a handler, all the request and response will pass through that handler only. In the request I can implement some authentication rules for each and every application/user accessing it. Other than this, What are the possible ways for securing it? I have heard someting called wsse security for web service. Is it possible to implement it for the JAX-RPC? Or it can be implemented only for JAX-WS? Need some helpful inputs on the wsse security so that i can jump learning it. Other than handler and wsse security, any other possible way to make a service secure? Please help.

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• Jquery adding events

  - by JBone

  I want to add an event handler to some dynamically added elements. I simplified my problem into the basic code below. I am using the new JQuery 1.7 on feature to say "hey for all labels in the CancelSurvey id element call this notify function when they are clicked." function notify(event) { console.log(event.data.name); } $('#CancelSurvey').on('click', 'label', { name: $(this).attr("id") }, notify); I want to pass the id of the label as parameter "name". When I try to alert this it is undefined (they are defined in the html created). I believe that using the $(this) is not referencing the label selector in this case. It actually seems to be referencing the document itself. Any ideas on how to accomplish this?

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• Class templating std::set key types

  - by TomFLuff

  I have a class to evaluate set algebra but wish to template it. At the minute it looks a bit like this set.h: template<typename T> class SetEvaluation { public: SetEvaluation<T>(); std::set<T> evaluate(std::string in_expression); } set.cpp template<typename T> std::set<T> SetEvaluation<T>::evaluate(std::string expression) { std::set<T> result; etc etc... } But i'm getting undefined reference errors when compiling. Is it possible to declare the return type as std::set<T> and then pass std::string as the class template param. There are no errors in the class but only when I try to instantiate SetEvaluation<std::string> Can anyone shed light on this problem? thanks

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• Changing find to echo

  - by waszak

  This is almost good find *.txt -print0 | xargs -0 rm -f And i want to have something like that echo *.txt ./zad3.sh | xargs -l rm -f First version is good because I can delete file with white spaces but I can't use my script to select file to delete. Second version I can select files but I can't delete file with white spaces. I want to find files with end on .txt and delete some of them. zad3.sh is a script wich is returning file name if i agree to delete it rm catch the name and delete it. It works only for file without white space and special characters. Second version is better but i cant put my script inside it. find *.txt -print0| xargs -0 ./zad3.sh |xargs rm -f it works almost but i cant pass arg to rm and part of my code Thx

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• mysql_num_rows(): supplied argument is not a valid MySQL result resource

  - by php-b-grader

  I am getting this error when I pass an invalid SQL string... I spent the last hour trying to find the problem assuming - It's not my SQL it must be the db handle... ANyway, I've now figured out that it was bad SQL... What I want to do is test the result of the mysql_query() for a valid resultset. I am simply using empty($result)... Is this the most effective test? Is there a more widely accepted method of testing a resultset for a valid result?

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• Can JQuery/JavaScript be used to write a substantial client side application?

  - by Ian

  I have an unusual situation - I have an embedded video streaming device with a complicated UI, and I need to use an embedded web server to reproduce that UI through a web browser. I'm thinking of using JavaScript/JQuery on a C++ backend (I am NOT coding all this myself, I need to hire people for the grunt work). The embedded web server is much less powerful than a PC, so I want to write an application that runs the entire UI in the browser, and only communicates with the server to pass new program settings back and forth, get status updates from the device, and control video playback. In other words, the client gets one big page or a small number of big pages (effectively downloading the application), the application maintains significant local memory storage, and once the pages are first loaded the server never sends anything layout-related. The application has two rows of tabs to navigate ~40 menu pages, drag-and-select controls to pick cells in a grid, sorted lists, lots of standard data entry options, and it should be able to control up to 16 embedded video players at once (preferably VLC). Is this possible in JavaScript/JQuery with a C++ backend?

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• Interesting XSL Dilemma

  - by bobber205

  I've got this issue. A template called "checkbox" that's called from while inside a table HTML element and also outside of it. To solve an issue, I've added tags to "checkbox" input control. Here's what I'd like to do to but I'm not sure if it's possible or not. When I hit my "row" (part of the custom table markup) template, I would set some variable or pass some parameter, that for each template applied afterwards, would know it was in a "row" and do something special based on this information. I know I can't add parameters to apply-templates. I may be able to add a row "mode" but I can't make changes to each template and have one copy with the mod parameter and one without. Thanks for any suggestions. I know the ideal solution would to be to make changes to the XML but I'm not sure if I can do that as this point. That's a "content" issue. :P Thanks!

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• Callback Timer function in C++

  - by user3596609

  I am trying to implement a callback timer function in C++ which should do a callback after a timeout. I am listening on a socket and then waiting for messages on it. so if I have something like getMessages() and I want to pass the timer function in it as an argument. So how can it be implemented that after the receive of a message, the timer is started and the callback happens if there is a timeout before the next messages arrives. I am new to callback functions. Any help is greatly appreciated. Thanks!

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• Assign parameters to function according to parameter names

  - by Korcholis

  I have an assoc array with a list of what are parameters to me. Here's an example: array( 'param1' => 'value1', 'param4' => 'value4', 'param3' => 'value3', 'param2' => 'value2', ); Note that they may come unsorted. Now, is there a way I can make a call (static or from an instance, using call_user_func_array or similar) and correctly pass each value to each parameter? Just to be sure, an example function I'd like to call using that parameter array is one such this: exampleFunction($param1, $param2, $param3, $param4) { ... } PS: Reflection is great, but I'm concerned about execution times (which, at least, in Java tends to increase a lot when using Reflection). If you know any other way to do so, it would be awesome.

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• how to specify a pointer to an overloaded function?

  - by davka

  I want to pass an overloaded function to the std::for_each() algorithm. e.g.: void f(char c); void f(int i); std::string s("example"); std::for_each(s.begin(), s.end(), f); I'd expect the compiler to resolve f() by the iterator type. Apparently, it (gcc 4.1.2) doesn't do it. So, how can I specify which f() I want? thanks a lot

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• func_get_args detect context

  - by Steve

  I have a script where it accepts a varying number of arguments. I want to use func_get_args to perform operations on said arguments. If I have one function like this: function Something() { foreach(func_get_args($this) as $functions) { // Do something } // Return.. } I want to be able to call this function in, for example, another function to add/save entries. The add/save function would have arguments 'title', 'description' etc.. I basically want to know if there is a way to detect the context of a function call. Can I pass something to func_get_args that will let it know that its called in a certain function? So if I do: function Save($title, $desc) { $vars = $this->Something(); } I want $vars to contain $title and $desc after modifying them.

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• How to convert a void pointer to array of classes

  - by user99545

  I am trying to convert a void pointer to an array of classes in a callback function that only supports a void pointer as a means of passing paramaters to the callback. class person { std::string name, age; }; void callback (void *val) { for (int i = 0; i < 9; i++) { std::cout << (person [])val[i].name; } } int main() { person p[10]; callback((void*)p); } My goal is to be able to pass an array of the class person to the callback which then prints out the data such as their name and age. However, the compile does not like what I am doing and complains that error: request for member 'name' in 'val', which is of non-class type 'void*' How can I go about doing this?

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• Do not want Form to display over other application windows

  - by Cat

  I am displaying a Form from one process by passing the Show method a window handle from another process. I only want this new Form to display above the passed Form, like a MessageBox. However, this newly launched Form appears above other application windows, despite: Setting Process.WindowStyle.Hidden to the Form-displaying process Overriding the ShowWithoutActivation and CreateParams properties of the Form. Making sure Form.TopMost is not true I have checked that the window handle is valid from the second process. Focus is not stolen, however. Process A: Pass (Form) window handle to a new Process B via the command line Process B: Display a new Form using Form.Show(anotherProcessWindowHandle)

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• dropdownlist's Datavaluefield is not working

  - by Ranjana

  i am getting the datas from database and storing in a collectionobject. The collectionobj contains the Datas 'Name' and 'ID'. My code: <asp:dropdownlist id="dropdown1" runat="server" DataTextField="Name" DataValueField="ID"/> collectionobj=objbs.GetNAmes() for intloop as integer in Collectionobj.Count.Rows-1 dropdown.Items.Add( Collectionobj.Items(intloop).Name) dropdown.DataValueField=Collectionobj.Items(intloop).ID Next dropdown.DataBind() Im getting the Value binded in the dropdown as "Names" . when i select the dropdown i need to pass the respective ID of that name. But when I assign the Dim strid as String=dropdown1.DataValueField The dropdown1.DataValueField is holding the id of last name binded in the dropdown.it is not taking the id which im selecting n the dropdown.. Any suggestion..........

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• How do I quiet image_submit_tag from params hash?

  - by Alan S

  Does anyone know how to eliminate the x and y params when you use image_submit_tag with a get method? I have a simple search form, and using get to pass the value in the url. When I use image_submit_tag, it also appends the x and y coords, so I get urls like http://example.com?q=somesearchterm&x=15&y=12 When I have used submit_tag, I can use the :name = nil attribute (was in one of Ryan Bates' Railscasts), but it doesn't seem to work for image_submit_tag. Granted it doesn't affect functionality, but I don't need them and would like them quieted.

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• Google Analytics - Goal Funnel Steps

  - by Daniel

  Is there a way to test the url you're entering in a step, to see if Google Analytics will recognize it? What I'd like to do is provide some web page or some web service with a URL, and get a pass or fail. It passes if Google Analytics recognizes a page hit to the url. Let me give some context. We've been having issues with our goal funnel steps in Google Analytics. The instructions on adding steps say not to use the domain. e.g. DO NOT use : http://www.mysite.com/step1.html INSTEAD use: /step1.html Our custom CRM uses friendly urls and as a result GA is having a hard time picking up on them. So we've experimented with changing around url we've placed in the step, however we've got to wait a day to see if the new url we've provided is going to work! Hence why we're looking for something quicker.

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• What is the purpose of Process class in Java?

  - by Nitesh Panchal

  Runtime objRuntime = Runtime.getRuntime(); String strBackupString = "mysqldump -u " + userName + " -p" + password + " " + dbName; Process objProcess = objRuntime.exec(strBackupString); This is used for backup of database. But what exactly happens? Can anybody make me explain, what is the purpose of Runtime and Process class? Is this class used to act as if we are typing command from command prompt? Then what should i pass to objRuntime.exec() if i want to open notepad? And is the command executed as soon as we call exec method? If yes, then what purpose does Process serve here? I really can't understand these two classes. Please make me understand. Thanks in advance :)

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• Java synchronizing static list ?

  - by JavaUser

  Hi, In a Java class , i am having a static list so this list is shared across all the objects of this class.The business logic in this class will run periodically which is invoked by some method with out passing instance parameters.Now I want to invoke this run method based on the list(I will add some vales into this list based on JMS) ,this list may empty sometimes and after finishing the run , i am emptying this list.Now my question is , whether I need to synchronize this list or not? Also let me know is there any other way to pass value in one object instance(Thread1) to other object instance (Thread2) other than having Static variable(static list)? Thx

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• How do I provide a string with a list of values to an "IN" statement

  - by Degan

  I am creating a string that is a list of comma-delimitted values by looping through the selections in a CheckBoxList. I am able to display this value, so I know that it is creating what I expect. I am attempting to pass this list to an IN statment in a SELECT query: SelectCommand="SELECT ThisDate, DATEPART(dw, ThisDate) AS Expr1 FROM fbCalendar WHERE (ThisDate &gt;= @ThisDate) AND (ThisDate &lt;= @ThisDate2) AND (DATEPART(dw, ThisDate) IN (@TheseDays))" <asp:ControlParameter ControlID="Label1" Name="TheseDays" PropertyName="Text" Type="String" /> This works fine as long as there is only a single item selected, but selecting a second item fails with the message: Conversion failed when converting the nvarchar value '4,5' to data type int. However, I do not understand when this would be converted to an INT. I have tried many different formatting attempts (such as encapsulating the string in parenthesis (e.g. "(4,5)" ) for the SELECT query, but I have yet to find the right one to make this work. It seems like formatting is the problem, but perhaps I am missing something else.

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• How to search with parameters in MVC?

  - by SnowJim

  Hi, I need to be able to provide a page for the end user where thay can search in the following : Search work Category Price AdType Location and so on. Its important that the user can copy the url and then use it later(and get the same settings). Its also important to be able to save these settings on the user in the database. So far I have created a ModelView class that contains the parameters but I am not sure that this is the right way to go? Maby I should pass all inte the URL. If so, how do I accomplish this? Is there any samples I could look at? BestRegards

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• this pointer to base class constructor?

  - by Rolle

  I want to implement a derived class that should also implement an interface, that have a function that the base class can call. The following gives a warning as it is not safe to pass a this pointer to the base class constructor: struct IInterface { void FuncToCall() = 0; }; struct Base { Base(IInterface* inter) { m_inter = inter; } void SomeFunc() { inter->FuncToCall(); } IInterface* m_inter; }; struct Derived : Base, IInterface { Derived() : Base(this) {} FuncToCall() {} }; What is the best way around this? I need to supply the interface as an argument to the base constructor, as it is not always the dervied class that is the interface; sometimes it may be a totally different class. I could add a function to the base class, SetInterface(IInterface* inter), but I would like to avoid that.

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