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• Error 424 from Twitter API

  - by Ted

  I'm experitmenting with the Twitter API (OAuth). I have a test bed that can tweet from my dev box, but fails in production. I get a status code of 424 returned when trying to tweet. I can't spot the difference between my live environment and my dev environment so really need to understand what a '424' is, but can find no documentation relating to it.

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• Managed DirectX as a starting point

  - by numerical25

  I know the difference between manage and unmanaged DirectX. My question is if I decided to do managed directX as a starting point, would it help me to better understand unmanaged DirectX. Honestly, the only thing I see different about the 2 is how you initiate and access resources. Matrix Math is Matrix no matter what so If I learn it in managed, then I should be fine in unmanaged

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• How to mask an view with an black-white image?

  - by mystify

  I've heard that it's possible to mask views with black/white images, where black means fully transparent and white means view is visible. The big difference to clipsToBounds is that the view could be clipped in funny shapes like circles or stars. How could I do that?

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• add color style to value based on condition

  - by rod

  Hi All, How do I conditionally add the style 'color:red' to the .CurrentDifference if the value happens to be a negative value? Thanks, rod. <div class="sRow"> <div class="sLabel p40"> Difference: </div> <%= (!String.IsNullOrEmpty(Model.Amount)?Model.Amount.CurrentDifference.ToString("c"):string.Empty) %> </div>

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• LINQ Single vs First

  - by BahaiResearch.com

  LINQ: Is it more efficient to use the Single() operator over First() when ever I know for certain that the query will return a single record? Is there a difference?

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• Is it bad to explicitly compare against boolean constants?

  - by polygenelubricants

  Is it bad to write: if (b == false) //... while (b != true) //... Is it always better to instead write if (!b) //... while (!b) //... Presumably there is no difference in performance (or is there?), but how do you weigh the explicitness, the conciseness, the clarity, the readability, etc between the two?

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• What is the best way to declare sorted association in grails domain classes ?

  - by fabien7474

  It seems that there are two different ways of declaring sorted associations in Grails : Method 1 (see here) using default sort order class Book { String title } class Author { static hasMany = [books : Book] static mapping = { books sort: "title"} } Method 2 (see here) using SortedSet class Book implements Comparable { String title int compareTo(obj) { title <=> obj.title } } class Author { SortedSet books static hasMany = [books : Book] } I am not sure which one to use and what is the difference (if any), pros and cons between using one against the other. I would appreciate any clarification. Thank you

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• Loading data in constructors and not in constructors

  - by Richeve S. Bebedor

  I just want to know the difference between loading the data inside the constructor and loading the data outside the constructor but not inside any methods example: Loading inside constructor public class Model{ Object testobject; public Model(){ testobject=new Object(); } } VS example: Loading outside constructor public class Model{ Object testobject=new Object(); public Model(){ } }

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• Class method differences in Python: bound, unbound and static

  - by Franck Mesirard

  What is the difference between the following class methods? Is it that one is static and the other is not? Class Test(Object): def method_one(self): print "Called method_one" def method_two(): print "Called method_two" a_test = Test() a_test.method_one() a_test.method_two()

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• Is it bad to explicitly compare against boolean constants e.g. if (b == false) in Java?

  - by polygenelubricants

  Is it bad to write: if (b == false) //... while (b != true) //... Is it always better to instead write: if (!b) //... while (!b) //... Presumably there is no difference in performance (or is there?), but how do you weigh the explicitness, the conciseness, the clarity, the readability, etc between the two? Note: the variable name b is just used as an example, ala foo and bar.

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• [r] Converting unix seconds in milliseconds to POSIXct/POSIXlt

  - by signalseeker

  Why do I see a difference when I convert a unix timestamp to datetime object in R? > as.POSIXlt(1268736919, origin="1970-01-01", tz="America/New_York") [1] "2010-03-16 06:55:19 EDT" > as.POSIXct(1268736919, origin="1970-01-01", tz="America/New_York") [1] "2010-03-16 11:55:19 EDT" The result from POSIXlt is actually correct. Also, is there a way to do this conversion without specifying the origin? Thanks

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• Why is my number being rounded incorrectly?

  - by izb

  This feels like the kind of code that only fails in-situ, but I will attempt to adapt it into a code snippet that represents what I'm seeing. float f = myFloat * myConstInt; /* Where myFloat==13.45, and myConstInt==20 */ int i = (int)f; int i2 = (int)(myFloat * myConstInt); After stepping through the code, i==269, and i2==268. What's going on here to account for the difference?

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• How can I call Objective-C code (specifically code from Mac system libraries) from C++/Qt?

  - by Jake Petroules

  Also, what is the difference between a .m and a .mm file? Or is that just some convention that Nokia uses for Qt?

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• Git for Local Branches

  - by Rachel

  How can I differentiate between two local branches in git ? How can I copy one local branch to another local branch ? In general how can I perform difference operation between two local branches on my server using git. I tried looking it up online but there is not enough documentation on that or there is not clear documentation on that. Any suggestions or links to useful material would be highly appreciated. Thanks.

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• MySQLi -- OO or Procedural?

  - by Kerry

  I know OO is the "way to go" but I'm thinking procedural might be easier to use in the wrapper I'm making. Any difference in performance between MySQLi Object Oriented vs Procedural?

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• jQuery is not defined on my staging server but works fine on my local

  - by Tony

  If you pop open this page with your javascript console, you'll notice a bunch of JS errors. I don't get these errors in my local environment and it seems like it is happening because $ is not defined. I have tried to mimic my local environment exactly on staging by using the same environment.rb file and removing all JS caching but it is making no difference. Can anyone tell why jQuery is crapping out? It might be something really stupid, but I need a second pair of eyes.

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• Eclipse plugins vs features vs dropins

  - by autobiographer

  What is the difference between the plugins, features and dropins folder from an eclipse installation? What is the correct use of these folders?

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• Regarding Application Templates

  - by user185590

  Hi Folks , Here is Jagadeesh, New to the Iphone Development Platform , i need to know the Difference among the Templates for our Applications( like we have Navigation, view, window, Open Gl, Tab Bar, Utility type application)over there and there is a small description at the bottom of the pane , can anyone let me know the Complete description and Templates Screen shot(like View based aPpliction screen shot, Window based Screen Shot Etc..., ) so that as a beginner it is very easy to learn....

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• WPF application

  - by Senthilkumar

  Hi I am new to WPF.. Can any one tell what is the difference between standalone applications and XAML browser applications (XBAPs) and how it differs in handling navigation and other stuff..

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• Class constructor in java

  - by aladine

  Please advise me the difference between two ways of declaration of java constructor public class A{ private static A instance = new A(); public static A getInstance() { return instance; } public static void main(String[] args) { A a= A.getInstance(); } } AND public class B{ public B(){}; public static void main(String[] args) { B b= new B(); } } Thanks

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• w3wp versus mvsmon

  - by 4ecomm

  Hi, I'm trying to figure out the difference between w3wp and msvsmon. Both seem to be remote debugging tools that run on the web server, and we can attach to them via Visual Studio to help in debugging live applications. Is this correct ? If so what are the differences between them ? many thanks.

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• GORM "getNextException" equivalent

  - by Josh K

  GORM sits on top of [Hibernate](http://en.wikipedia.org/wiki/Hibernate_(Java). The issue is that sometimes Hibernate will throw exceptions from the JDBC driver that I can't figure out how to investigate. Specifically: Could not execute JDBC batch update; /* snip */ Caused by: java.sql.BatchUpdateException: /* snip */ [insert] was aborted. Call getNextException to see the cause. If it makes any difference I'm using PostgreSQL.

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• Is arithmetic overflow/underflow generally checked in .Net framework methods?

  - by YWE

  For example, let's use the Add method of the ArrayList class. If I am using the default compiler settings in Visual Studio C# project in which arithmetic overflow is not checked, would ArrayList.Add() throw an OverflowException if I added too many items? Would surrounding the method call with checked or unchecked make any difference? BTW, I would write a test program to determine the answer to this question if I had Visual Studio available to me right now.

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• Synchronise structure of multiple database

  - by phenevo

  Hi, I have 2 database: production and to test. Production should have the same fields and tables like testdatabase. is there any software, or script to show difference between this two databases?

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• copy files to nework path or Drive using python

  - by user218976

  hi , Mine is similar to this question. http://stackoverflow.com/questions/2042342/network-path-and-variables-in-python/2042376 The only difference is my network drive has a password protect with user name and password . I need to copy files to a samba share using python and verify it. if i manually login in then the code works but without logging in the shutil command does not work Thanks

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