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• What are the standard practices for throwing JavasScript Exceptions?

  - by T.R.

  w3schools says that exceptions can be strings, integers, booleans, or objects, but the example given doesn't strike me as good practice, since exception type checking is done through string comparison. Is this the preferred method of exception handling in JavaScript? Are there built-in exception types (like NullPointerException)? (if so, what are they, what kind of inheritance do they use, and are they preferred over other options?)

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• Does Core Data take appropriate action automatically when there's a Low Memory Warning?

  - by dontWatchMyProfile

  Does it turn some managed objects into faults when there's a Low Memory Warning? Or must we do that manually by calling the -refreshObjects:mergeChanges: method which puts the affected managed objects on diet quickly? And...would that actually hurt? What if these objects are currently used by an NSFetchedResultsController to show up on a table view?

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• How to include a C array in -description

  - by bgw

  I'm trying to include the elements of an array in the NSString that's returned by the -description method in my class. No clue how to do this in Objective-C...in Java there's string concatenation or StringBuilder, what's the equivalent in Obj-C? TIA..

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• empty() doesn't work with codeigniter input class

  - by BabyAzerty

  This is really weird. Whenever I call something like if(empty($this->input->post("foo")){//blabla} The whole PHP is "down" and I get a blank page from the website (even when I don't pass through this empty(input) line). I know this is not the right method and it is stupid, I change the code to if(!$this->input->post("foo")){//blabla} Better I guess ? Seriously, how come the empty(input) breaks down the entire PHP page ? (I can't get any echo "something").

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• Is an Object the smallest pageable unit in the Heap?

  - by DonnieKun

  Hi, If I have a 2 GB ram and I have an 2 instances of an Object which is 1.5 GB each, the operating system will help and context switch the pages to and from harddisk. What if I have 1 instances but is 3 GB. Can the same paging method breakdown this instances into 2 pages? Or will I encounter out-of-memory issue? Thanks.

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• What useful minor features of C# 4.0 can you list?

  - by sashaeve

  C# 4.0 has a lot of new major features such as dynamic type, covariance and contravariance, named arguments etc. But C# 4.0 contains new minor (but useful) changes such as TryParse method for TimeSpan, Enum, Guid data types, String.IsNullOrWhiteSpace, System.IO.Stream.CopyTo etc. What other minor and useful features of C# 4.0 can you list?

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• Painless way to trim leading/trailing whitespace in C?

  - by coledot

  Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution.

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• How can I add to List<? extends Number> data structures?

  - by kunjaan

  I have a List which is declared like this : List<? extends Number> foo3 = new ArrayList<Integer>(); I tried to add 3 to foo3. However I get an error message like this: The method add(capture#1-of ? extends Number) in the type List<capture#1-of ? extends Number> is not applicable for the arguments (ExtendsNumber)

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• Reduce Triangle in DirectX 9

  - by Himadri

  Hello everyone, I have a 3D object with about 2000 or 3000 triangles. I want to reduce the number of triangle without affecting shape of object. for eg, I have two triangles, (1,1.5,2) (1.5,1.5,2) (1.7,2,2) (1.5,1.5,2) (1.7,2,2) (2,1.5,2) In this case these two triangle is same as a single triangle - (1,1.5,2) (2,1.5,2) (1.7,2,2) I dont want the manual method, But if there is any direct function or such thing which will reduce my triangle list. Thank You.

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• What does the 'a' prefix represent in aString?

  - by psoon

  I'm just looking at NSString.h and wonder why some method declaration args use (NSString *)string; while others use (NSString *)aString. What are the conventions practiced here? Thanks for any insight.

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• Javascript plugin creation

  - by Aneesh

  I want to create a plugin called 'myPlugin'. Which method should I use and what is the difference between these two methods? Please tell me the advantages too. I am from designing background and not much programming knowledge. var myPlugin = { myId:"testId", create:function(){}, destroy:function(){} } OR function myPlugin() { this.myId = "testId"; this.create = function(){}; this.destroy = function(){}; }

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• Mocking ISession.Query<T>() for testing consumer

  - by TheCloudlessSky

  I'm trying to avoid using an in memory database for testing (though I might have to do this if the following is impossible). I'm using NHibernate 3.0 with LINQ. I'd like to be able to mock session.Query<T>() to return some dummy values but I can't since it's an extension method and these are pretty much impossible to test. Does anyone have any suggestions (other than using an in memory database) for testing session queries with LINQ?

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• Question about centering a Div .

  - by Sakti

  div { margin:90px auto; } This code centers the div in chrome with a top margin of 90px, but the results are different in all other browsers .. is there a common method to center the div and have a top margin at the same time ?

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• Why can't I get jQuery's live() or load() to work?

  - by dtryan

  Why does only the third method work? $('#jqtest').live('load', function() {$(this).html('hi');}); //1 $('#jqtest').load(function() {$(this).html('hi');}); //2 $(window).load(function() {$('#jqtest').html('hi');}); //3 <div id="jqtest">kldjfglkj</div>

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• How to list all the branches in TFS 2008 programmatically ?

  - by Cleyton

  Hi, I would like to list all the branches in a TFS 2008 project. Currently, I'm trying to use this: VersionControlServer vcs = (VersionControlServer)tfs.GetService(typeof(VersionControlServer)); But, there's no method like "GetAllBranches()". Is it possible? Thanks!

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• C++ shared objets

  - by Klaus

  Hello, I have got four classes A, B, C and D. Class A has a member b of class B. Class B has a member c of class C. A has a member D* dpointer; This hierarchy has to be preserved (in fact this is a GUI with app, window, panel as A, B and C). Now B and C must use a method from *dpointer. Is there something more elegant than giving dpointer as a member of B and C ?

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• Why I cannot call setSomething()?

  - by badgirl

  Hello. I dont know how to acces my method of my class ProjectNode, that is returned from ExplorerManager mgr like this: mgr.getRootContext().setSomething() getRootContext() returns Node object, but I put class ProjectNode (extends AbstractNode, abstractNode extends Node)into rootContext. The compiler does not want to eat that line of code. But it must!

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• Display different iphone views depending on logged in status

  - by user330936

  I want to display a login view to my users if they are not logged in and the main view if they are. In my header file I define a variable to hold the logged in status #define loggedIn 0 I figure I should then reference this in the initWithNibName method and then decide which nib to load. Is the right way of doing it? If so can someone help me out with the exact code? Thanks for any help

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• Can I use a attribute to make .net impersonate another user?

  - by Rising Star

  I am familiar with impersonating an account in .net by using: dim myIdentity as WindowsIdentity = someIdentity using ctx as WindowsImpersonationContext = myIdentity.Impersonate() doStuff() end using Is it possible to define a .net attribute so that I could write something like: < runAsUser(someIdentity) public sub doStuff() and then have the .net framework always impersonate when running the method doStuff()?

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• custom height UITableViewCell

  - by nevva

  I have a custom UITableViewCell that loads in a programmatically created UITableView that is pushed from another view onto a UINavigationController, why cant i specify the height of my cells? The other weird thing is that when i push the cell, the didSelectRowAtIndexPath:indexPath method isn't called.

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• Do you use __autoload() ? Will it be compatible to all host ?

  - by Relax

  I'm hesitating whether or not to use this mechanism. PHP Doc says autoloading is not available if using PHP in CLI interactive mode. So, should we avoid to use this method for just in case, your application get installed in a host happenly running PHP in CLI ?

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• Can I get a raw pointer from boost's weak_ptr?

  - by Czubaka

  Is it possible to get a raw pointer from boost::weak_ptr? Boost's shared_ptr has get() method and "-" operator. Is there some rationale behind weak_ptr not having the same functionality?

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• How to get the duration of the video uploaded ?

  - by Holicreature

  i'm using ffmpeg to convert videos to desired formats and to generate the thumbnails.. I want to find the total duration of the video to display in the main page along with the thumbnails.. Can i use ffmpeg to find the duration when its being uploaded and store them on the database.? Is storing the duration in db is necessary or else is there any other method?

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• Swing application -> Drag & drop to the desktop / folder

  - by ffffff

  When Finder of Mac, Explorer of Windows did drag & drop of a specific item in the Swing application to a desktop and a folder, How to get the former path which I dropped? I am happy teach me a necessary class and method.

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• jquery.ajax returns content-type "html" on iis while it returns content-type "json" on local host

  - by Sridhar

  Hi, I am using jQuery.ajax function to make an ajax call to a page method in asp.net. I specifically set the content-type to "application/json; charset=utf-8". When I looked at the response in the firebug it says the content-type is html. Following is the code to my ajax call $.ajax({ async: asyncVal, type: "POST", url: url + '/' + webMethod, data: dataPackage, contentType: "application/json; charset=UTF-8", dataType: "json", error: errorFunction, success: successFunction });

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