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• Will css position method affect browser rendering performance?

  - by Relax

  Considerring two DIVs A and B, which A includes B, and CSS: A { margin-left: -2000px; } B { margin-left: 2000px; } with this CSS, position of B is no difference to its situation with no CSS, i want to know will there be a performance decrease when rendering? Compare to the case of no CSS.

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• Eclipse's Visual Studio Ctrl+Tab and Ctrl+Shift+Tab Equivalent

  - by jasonh

  In Visual Studio, I always use Ctrl+Tab and Ctrl+Shift+Tab to navigate between documents. I see that Eclipse has Ctrl+F6 to navigate between editors, but this isn't nearly the same behavior. The difference being, pressing it once and then again will get you moving back and forth between two files, whereas in VS, it will cause you to navigate forward based on the tab order in the editor. Any ideas on how I can replicate VS's behavior?

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• Ruby (and Rails) nested module syntax

  - by brad

  I'm wondering what the difference is between the following two modules # First Example module Parent module Child end end and # Second Example module Parent::Child end Using the 2nd method, it appears as though the Parent module must be previously defined, otherwise I get an 'uninitialized constant' error Given this, what is the preferred way of defining modules such as this and then adding nested children with regards to syntax and file structure (ie. folders etc). Reference to a Rails way would be greatly appreciated. Are these two examples for all intents and purposes equivalent?

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• Get visual diff of two revisions of a file.

  - by Steve Horn

  I'd like to know the best/easiest way to get a visual diff of a file given 2 revisions in Mercurial. ie: I'd like to visualize the difference between revision 3 and revision 12, etc.

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• What does the word "literal" mean?

  - by ke42

  What does the word "literal" mean when used in context such as literal strings and literal values? what is the difference between a literal value and value?

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• What is the benefit to add W3C logo in site?

  - by jitendra

  http://www.w3.org/QA/Tools/Icons If my code is valid then Should i add logo to all my personal and client sites.? Should i add logo to client sites and tell to client these are good to have? If code is valid but semantically correct even can we use logo? What is benefit and purpose to add these logos for XHTML, CSS accessibility. And what is the difference between Gold and Blue logo Why W3C provide these logos?

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• Need info on "set endian" on solaris machine

  - by kartik

  Hi, Can any 1 please tell or show the difference in the behaviour of any program before and after I "set endian little" in gdb on solaris machine? I want to know the effect of changing it. Thanks!

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• What does @ preceeding a string literal mean in C#?

  - by Rising Star

  In C#, what is the difference between string foo = @"foo string"; and string foo = "foo string"; ?

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• Best way to display a background with a pattern in an iPhone/iPad app

  - by Dr Dork

  Here's an example of the type of background image I'm talking about... Clearly, there's a pattern in it. My question is, if this were an iPad app and the background image was twice the size, would there be any significant benefits to taking advantage of this pattern by tiling the image? Or would it really make no difference in terms of performance and just be easier to load the entire image into a UIImageView? Thanks in advance for all your wisdom!

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• CSS Performance

  - by JaZz

  Is there any performance difference between: p { margin:0px; padding:0px; } and p { margin:0px; padding:0px } Thanks in advance!

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• What is a re-entrant parser?

  - by cloudhead

  Can someone explain this to me? In particular the difference between: http://github.com/whymirror/greg and http://piumarta.com/software/peg/ The former being a re-entrant version of the later.

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• What's behind the 'system' function in perl?

  - by JohnJohnGa

  i can thought that it will open a shell, execute the parameter (shell command) and return the result in a scalar. But, execute 'system' function in a perl script is faster than a shell command. It will call this command in C? If yes, what's the difference between rmdir foo and system('rmdir foo'); Thanks,

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• C++ performance, for versus while

  - by aaa

  hello. In general (or from your experience), is there difference in performance between for and while loops? What if they are doubly/triply nested? Is vectorization (SSE) affected by loop variant in g++ or Intel compilers? Thank you

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• str_replace function wont replace string if i use single quotes

  - by robezy

  I using php's str_replace function to replace some text. Example below. str_replace("{x+{\$v}}", "{x-{\$v}}", $this->introtext); str_replace('{x+{\$v}}', '{x-{\$v}}', $this->introtext); In first case it replace text, but in second case it is not doing so. What is difference between two?

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• Primitive constructors vs casting for conversion

  - by peter

  What is the difference between: long myLong; float myFloat = (float) myLong; and: float myFloat = float(myLong);

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• how to adjust JFrame and JInternal frames with any screen size?

  - by Zakaria Marrah

  I am working on a swing application that starts with JFrame, but all the other frames are included as JInternalFrames, and i am facing some serious screen size problems when i instaled it in different computers, i used the following methode to set the JFrame in full screen Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); setBounds(0, 0, screenSize.width, screenSize.height); JFrame.setExtendedState(JFrame.MAXIMIZED_BOTH); but thre is no no difference, i want also to adjust the JInternalFrames with the screen size too. if you have any suggestions, solution please help :D

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• diffing two databases

  - by flybywire

  Is there a tool to find the difference between two databases. Both the schema and the actual data are pretty much the same, but not 100%. Do you know a tool that can help to succinctly describe the changes.

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• How to subtract dates in YYYYMMDD format?

  - by NinjaBomb

  I have 2 integer fields that represent dates in the YYYYMMDD format. What is the best way to subtract 2 of these fields to get the correct # of days between them? For instance, if I take the difference between 20100511 and 20100428 I would like the result to be 13 and not 83. I know I need to convert the integer fields into date formats but everything I have tried either throws an exception or doesn't work correctly. What am I missing? Answers in vb.net please

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• Localization of attribute values in .NET

  - by Alex Angas

  How can I localize/internationalize attribute values in .NET? My specific example is for ASP.NET web parts such as WebDisplayName, WebDescription, etc. where I inherit from the base class that uses these attributes. Also, is there any difference to doing this with attributes declared in my own classes? Thanks!

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• Confused about Base class libary and Framework Class Library

  - by n0vic3c0d3r

  Is ADO.NET and ASP.NET a part of Base Class Library? The information given in wikipedia looks ambiguous to me. In the figure, it is shown as a separate block. What is the difference between Base Class Library(BCL) and Framework Class Library(FCL)? Is FCL as a part of .NET Framework? If so why is FCL not shown in the figure as part of .NET framework? Got confused!!

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• Apache: Tomcat "any version" .exe or .zip

  - by Nirmal

  Hello..., I have little bit confusion regarding apache tomcat installation. So, I would like to know that whats the difference between the .zip and the .exe tomcat ? Thanks in advance...

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• explain these select statements!

  - by user329820

  Hi, I can not get the difference betwwn these statements? would you please help me,I have read some sample of select statements but I did not get these ones. SELECT 'B' FROM T WHERE A = (SELECT NULL); SELECT 'C' FROM T WHERE A = ANY (SELECT NULL); SELECT 'D' FROM T WHERE A = A; I use MySQL

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• Calculate time in months between two unix timestamps

  - by samwatt

  Hi, what is the shortest way to calculate the difference in months (average num of days in a month as 30) between two unix timestamps? Date::diff is available for working with DateTime objects, but I'm wondering if there's a neat way to work this out with timestamps...

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• Python: Why do some packages get installed as eggs and some as "egg folders"?

  - by cool-RR

  I maintain a few Python packages. I have a very similar setup.py file for each of them. However, when doing setup.py install, one of my packages gets installed as an egg, while the others get installed as "egg folders", i.e. folders with an extension of "egg". I couldn't figure out what is the difference between them that causes this different behavior. What can it be?

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• Why NullPointerException is a runtime exception and RemoteException not?

  - by Tom Brito

  A possible reason because a NullPointerException is a runtime exception is because every method can throw it, so every method would need to have a "throws NullPointerException", and would be ugly. But this happens with RemoteException. And a possible reason because RemoteException is not a runtime exception, is to tell it client to treat the exception. But every method in a remote environment need throws it, so there is no difference of throwing NullPointerException. Speculations? Was I clear?

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