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• In Linux, how can I completely disregard the contents of /etc/ld.so.cache?

  - by BillyBBone

  Hi, For the purposes of prototyping a new set of shared libraries in a development sandbox (to which I don't have root access), I'd like to know how to execute a binary while completely overriding the contents of /etc/ld.so.cache, so that none of the system libraries get loaded. How can this be done? I have looked at mechanisms like setting the LD_LIBRARY_PATH environment variable or launching the program wrapped inside /lib/ld-linux.so, but these methods all seem to supplement the loading of libraries from /etc/ld.so.cache, but not override it completely. Help?

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• PHP: Class extends problem "Call to private method ... from context ..."

  - by sombe

  I have 3 classes in WordPress (the question itself is unrelated to it): class WP_Widget class Theme_Widget extends WP_Widget class Specific_Widget extends Theme_Widget Essentially Theme_Widget contains some extension functions to the basic WP_Widget. Inside Specific_Widget I call one of Theme_Widget's methods: class Specific_Widget { function __construct() { $this->some_method_that_belongs_to_Theme_Widget(); } } When I instantiate Specific_Widget, PHP throws a fatal error as follows: Fatal error: Call to private method Theme_Widget::some_method_that_belongs_to_Theme_Widget() from context 'Specific_Widget' in ... Do you have an idea as to how I can resolve this? This is the first time I've received this error from PHP. Could it be derive from WordPress itself?

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• Joomla forwarding code to the View...is this the correct way to do it?

  - by jax

  Here are some sample methods from my Controller class. Now when the user clicks the New button $task=add is sent to the Controller and the add() method is called. As you can see it does not really do anything, it just creates a url and forwards it off to the correct view. Is this the correct way of doing things in the MVC pattern? /** * New button was pressed */ function add() { $link = JRoute::_('index.php?option=com_myapp&c=apps&view=editapp&cid[]=', false); $this->setRedirect($link); } /** * Edit button was pressed - just use the first selection for editing */ function edit() { $cid = JRequest::getVar( 'cid', array(0), '', 'array' ); $id = $cid[0]; $link = JRoute::_("index.php?option=com_myapp&c=apps&view=editapp&cid[]=$id", false); $this->setRedirect($link); }

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• How to load an entity by a key other than primary key?

  - by stacker

  In a customized servlet (seam 2.1.2) this works fine TableNameHome tableNameHome = (TableNameHome) Component.getInstance( "tableNameHome " ); tableName entity = tableNameHome.getInstance(); entity.setXXX(); tableNameHome.persit(); However this one fails: entityManager = tableNameHome .getEntityManager(); Query query = entityManager.createQuery( "SELECT b FROM tablename b WHERE b.box_id = :key2nd" ); query.setParameter( "key2nd", value); List results = query.getResultList(); and leads to this error message: org.hibernate.hql.ast.QuerySyntaxException: tablename is not mapped [SELECT b FROM tablename b WHERE b.key2nd = :key2nd] In EJB 2.1 I could implement other finder-methods. EntityHome.find() searches only by primary key. What do I need to do in order to query by a different criteria than primary key?

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• XML-RPC in CodeIgniter is for creating a API?

  - by ajsie

  I have read some tutorials about creating an API and i wonder if XML-RPC and XML-RPC server in CodeIgniter are for creating this? If yes, what are the benefits of using these classes rather than im just using regular class/methods/params to create my API interface. This is what it said in the documentation: Quite simply it is a way for two computers to communicate over the internet using XML. One computer, which we will call the client, sends an XML-RPC request to another computer, which we will call the server. Once the server receives and processes the request it will send back a response to the client.

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• Swap byte 2 and 4 from integer

  - by czar x

  I had this interview question - Swap byte 2 and byte4 within an integer sequence. Integer is a 4byte wide i.e. 32 bits My approach was to use char *pointer and a temp char to swap the bytes. For clarity i have broken the steps otherwise an character array can be considered. unsigned char *b2, *b4, tmpc; int n = 0xABCD; b2 = &n; b2++; b4 = &n; b4 +=3; ///swap the values; tmpc = *b2; *b2 = *b4; *b4 = tmpc; Any other methods?

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• Importing Liferay portlet into Eclipse IDE

  - by jyo

  Hi I haved created a portlet through plugins SDK and wanted to import that into the eclipse ,but it did not imported as it is , But after creating the portlet if i give " ant setup-eclipse " then the project get imported into the eclipse .i have searched for this almost 2 days then i found the solution .. How do i know what all the commands i have in ant . like in the API i will have all the methods where i can see there and get on with my coding work ,how with ant ? how do i know wat all the commands i need to implement ? Thanks

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• C++ include header conventions

  - by user231536

  Suppose I have a file X.h which defines a class X, whose methods are implemented in X.cc. The file X.h includes a file Y.h because it needs Y to define class X. In X.cc, we can refer to Y because X.h has already included Y.h. Should I still include Y.h in X.cc ? I understand that I don't need to and I can depend on header guards to prevent multiple inclusions. But on the one hand, including Y.h makes X.cc a little more independent of X.h (can't be completely independent of course). What is the accepted practice? Another example: including <iostream> in both .h and .cc files. I see some people do this and some don't.

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• jQuery mobile 1.1.0 slider: JS-object properties access?

  - by Koniak

  EDIT: This could be seen as a pure javascript objects question. The code can be found here: jquery.mobile-1.1.0.js I need to access properties of a jQuery mobile JS-object but is not sure how that is possible. In the jquery.mobile-1.1.0.js and mobile.slider is the following (see extend on line 5967): $.widget( "mobile.slider", $.mobile.widget, { ... _create: function() { ... $.extend( this, { slider: slider, handle: handle, valuebg: valuebg, dragging: false, beforeStart: null, userModified: false, mouseMoved: false }); Primarily the property I would like to read is the "dragging". I know i can execute the methods using: $("#slider").slider("refresh") Is there a similair way to access the properties? Thanks

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• Update database using restful ASP.NET MVC 1.0

  - by Mike

  We are building an MVC 1.0 application right now and using Linq - SQL for our DAL. Following the restful approach we have multiple action events depending on if you are updating or loading or what not. The two that I'm concerned with at this point are the edit and update action methods. Here is the signatures. public ActionResult Update(int customerId, int Id, AggregateModel viewModel) public ActionResult Edit(int customerId, int Id, AggregateModel viewModel) So the idea is that in the Edit method we load up our viewModel and pass it to the view. The user makes changes to the model and then posts back to the Update method. The first thing I could think of to do would be to get the viewModel from the database again, copy the changes in one by one from the posted back model and then submit it back. This would work but does seem clunky to me. What is the best way to insert those changes into the database at this point?

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• Design guide-lines for writing a Typed SQL Statement API ?

  - by this. __curious_geek

  Last night I came up to sometihng intersting while designing my new project that brought me to ask this qustion here. My project is supposed to follow Table Gateway pattern using tradional ADO.Net datasets for data access. I don't want to write plain queries in my data-access classes. So I came up with an idea of writing a parser kindaa api that exposes objects and methods to generate queries on the move based on my domain objects. Later I want this api to hook up to my Business objects and provide Typed SQL generator api right on the business object instances. Any idea or references how can I do this ? This seems very wide to start with that I'm compelled take your opinions here. Does there anything already exists that can do this ?

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• In ASP.NET MVC, how does response.redirect work?

  - by Swoop

  I have used response.redirect in classic ASP and ASP.NET webforms. However, with MVC 2.0, I am running into something peculiar. I have a private method in a controller class that is used by multiple controller methods to help load and validate some information. This private method is setup to redirect if a problem is discovered to a generic error message page. The big problem I am noticing is that the calling controller class and page view attempt to complete rendering and loading before the redirect actually takes place. This is annoying in development because the View throws exceptions that I need to ignore before my generic error page finally loads. As mentioned above, I am used to the older model of response.redirect which prevented subsequent code on a page from being executed as the new page would then load. Any help or advice on redirects in MVC would be greatly appreciated.

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• Best Automation Frame work design

  - by Vijay Prasath

  Using Nunit Frame work or Creating Visual studio Test Projects which one is the best way to save the time and effective automation? Now i am using selenium IDE to script the maximum parts in my application to reduce the time of execution(i feel ide execution is faster than test project execution) using gotoif, while, regexp ..etc and would go Selenium RC only for data driven methods and the events which have not been handled by IDE. Please suggest me Am i in the right way? because i am in the beginning stage on Automating my applications asking this Question for early correction is better.

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• Sharing base object with inheritance

  - by max

  I have class Base. I'd like to extend its functionality in a class Derived. I was planning to write: class Derived(Base): def __init__(self, base_arg1, base_arg2, derived_arg1, derived_arg2): super().__init__(base_arg1, base_arg2) # ... def derived_method1(self): # ... Sometimes I already have a Base instance, and I want to create a Derived instance based on it, i.e., a Derived instance that shares the Base object (doesn't re-create it from scratch). I thought I could write a static method to do that: b = Base(arg1, arg2) # very large object, expensive to create or copy d = Derived.from_base(b, derived_arg1, derived_arg2) # reuses existing b object but it seems impossible. Either I'm missing a way to make this work, or (more likely) I'm missing a very big reason why it can't be allowed to work. Can someone explain which one it is? [Of course, if I used composition rather than inheritance, this would all be easy to do. But I was hoping to avoid the delegation of all the Base methods to Derived through __getattr__.]

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• Changing dalvik/libcore causes rebuilding the whole framework

  - by ZelluX

  I'm adding some interception routines to Dalvik libcore methods (e.g. file open method in libcore/luni/src/main/java/org/apache/harmony/luni/platform/OSFileSystem.java), which I think only changes basic sharing libraries. But to my surprise, every time I run make after modifications, it rebuilds nearly everything of the framework, such as Calculator application, W3C DOM parser, etc. It really takes time to build the framework after a small modification. I'm wondering if it is possible to reduce number of rebuilt components after modifying dalvik libcore? Thanks.

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• Creating a jQuery Plugin, How do I do Custom Scopes?

  - by viatropos

  I would like to create a jQuery plugin with an API something like this: $("#chart").pluginName().attr("my_attr"); Instead of these: $("#chart").pluginName_attr("my_attr"); $.pluginName.attr("#chart", "my_attr"); Basically, instead of having to namespace every method that acts similar to ones in jQuery, I'd like to "scope" the methods to a custom api, where $("#chart).pluginName() would return an object such that get, attr, find, and a few others would be completely rewritten. I'm sure this is not a well-liked idea as it breaks convention (does it?), but it's easier and more readable, and probably more optimized, than the two options above. What are your thoughts?

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• method returning wrong variable

  - by cocoanewbie

  This class I'm working with has three instance variables I'm interested in, NSmutablearrays xArray yArray and zArray, there are also other NSmutablearrays, a, bArray and c. I just added accessors - (NSMutableArray *) xArray { return xArray; } ditto for y and z. However, it's returning yArray, zArray and bArray for some reason. Why is that happening? Okay, I just changed the names of the methods to GetXArray and everything seems to be returning the right variables. Now I'm really confused. How the heck did this happen and how do I prevent this from happening in the future?

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• Deactivate any calls to Log before publishing: are there tools to do this?

  - by Nicolas Raoul

  According to Google, I must "Deactivate any calls to Log methods in the source code" before publishing my Android app (section 4 of the publication checklist). My open-source project is large and it is a pain to do it manually every time I release. Additionally, removing a Log line is potentially tricky, for instance: if(condition) Log.d(LOG_TAG, "Something"); data.load(); data.show(); If I comment the Log line, then the condition applies to the next line, and chances are load() is not called. Are such situations rare enough that I can decide it should exist? This is on the official checklist, so I guess many people do this on a regular basis. So, is there a tool that removes all Log lines? Preferably one that is not tricked by code like the above.

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• Make sure base method gets called in C#

  - by Fnatte

  Can I somehow force a derived class to always call the overridden methods base? public class BaseClass { public virtual void Update() { if(condition) { throw new Exception("..."); // Prevent derived method to be called } } } And then in a derived class : public override void Update() { base.Update(); // Forced call // Do any work } I've searched and found a suggestion to use a non-virtual Update() but also a protected virtual UpdateEx(). It just doesn't feel very neat, isn't there any better way? I hope you get the question and I am sorry for any bad English.

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• Apache mod_rewrite replace characters in REQUEST_URI

  - by frio80

  I'm trying to write some .htaccess rules that replace certain characters in the REQUEST_URI parameter. Specifically, I want to replace the following: "<" = &lt; "" = &gt; "'" = &apos; '"' = &#x22; ")" = &#x29; "(" = &#x28; Example URL could be http://www.example.com/?<script>alert(1)</script>&q=")("<script') I've tried a whole bunch of methods with no success. Can someone point me in the right direction? Thanks.

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• Python: Using `copyreg` to define reducers for types that already have reducers

  - by cool-RR

  (Keep in mind I'm working in Python 3, so a solution needs to work in Python 3.) I would like to use the copyreg module to teach Python how to pickle functions. When I tried to do it, the _Pickler object would still try to pickle functions using the save_global function. (Which doesn't work for unbound methods, and that's the motivation for doing this.) It seems like _Pickler first tries to look in its own dispatch for the type of the object that you want to pickle before looking in copyreg.dispatch_table. I'm not sure if this is intentional. Is there any way for me to tell Python to pickle functions with the reducer that I provide?

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• When I use WinForms (C#) designer in VS2010, it still generates code that StyleCop complains about.

  - by Hamish Grubijan

  Some problems that I recall (there may be more): Includes regions Does not use this. prefix for member variables and methods Includes comments like the one below ( having // by itself catches the eye of StyleCop) // // fileNameTextBox // If I make a change to the text, and then open the designer again, and screws up my previously perfected fruits of hard labor. How did / would you solve this problem? I heard but did not personally experience a similar problem with WPF. How did / would you fix that? Thanks.

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• How to send complete POST to Model in Code Igniter

  - by Constant M

  Hi there, What would be the best way to send a complete post to a model in Code Igniter? Methods I know are as follow: Name form elements as array, eg. <input type="text" name="contact[name]"> <input type="text" name="contact[surname]"> and then use: $this->Model_name->add_contact($this->input->post('contact')); The other would be to add each element to an array and then send it to the model as such: <input type="text" name="name"> <input type="text" name="surname"> and $contact_array = array('name' => $this->input->post('name'), 'surname' => $this->input->post('surname')); $this->Model_name->add_contact($this->input->post('contact')); Which one of these would be best practice, and is there a way to directly send a whole POST to a model (or a whole form maybe?)

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• Is there a faster way to download a page from the net to a string?

  - by cphil5

  I have tried other methods to download info from a URL, but needed a faster one. I need to download and parse about 250 separate pages, and would like the app to not appear ridiculously slow. This is the code I am currently using to retrieve a single page, any insight would be great. try { URL myURL = new URL("http://www.google.com"); URLConnection ucon = myURL.openConnection(); InputStream inputStream = ucon.getInputStream(); BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream); ByteArrayBuffer byteArrayBuffer = new ByteArrayBuffer(50); int current = 0; while ((current = bufferedInputStream.read()) != -1) { byteArrayBuffer.append((byte) current); } tempString = new String(byteArrayBuffer.toByteArray()); } catch (Exception e) { Log.i("Error",e.toString()); }

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• wav stopped working with AudioServices on my iPhone app?

  - by user157733

  I have a wav file that was working fine. It is played using the AudioServices methods. Suddenly it stopped working. The weird thing is if i change he wav file to a different one that works. Any idea what is going on? The non working sound is slightly longer (still <10seconds) but it was originally working so I just can't figure it out. Any suggestions of what to try would be most appreciated. Thanks :-)

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