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• Using YQL and Jquery to check URL validity

  - by user102533

  The answer in this post http://stackoverflow.com/questions/2119680/use-jquery-to-check-if-a-url-on-another-domain-is-404-or-not shows how to use YQL in Jquery to check if URL is valid or not. However, I can't get this to work for me. The only difference I can think of is that my URL is a text file (http://mycrossdomain.com/sometext.txt) and not HTML.I think the YQL query needs to be adjusted accordingly. Any help is appreciated.

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• Need an algorithm for this problem

  - by Heisenburgor

  There are two integer sequences A[] and B[] of length N,both unsorted. Requirement: through the swapping of elements between A[] and B[], make the difference between {the sum of all elements in A[]} and {the sum of all elements in B[]} to be minimum. Many thanks

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• sizeof float (3.0) vs (3.0f)

  - by kumar

  Hi, What is the difference between sizeof(3.0) and sizeof(3.0f) I was expecting both of them to give the same result (sizeof float)..but its different. In 32 bit machine,gcc compiler, sizeof(3.0f) =4 sizeof(3.0) = 8 Why so?

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• Wpf. Chart optimization. More than million points

  - by Evgeny

  I have custom control - chart with size, for example, 300x300 pixels and more than one million points (maybe less) in it. And its clear that now he works very slowly. I am searching for algoritm which will show only few points with minimal visual difference. I have link to component which have functionallity exactly what i need (2 million points demo): http://www.mindscape.co.nz/demo/SilverlightElements/demopage.html#/ChartOverviewPage I will be grateful for any matherials, links or thoughts how to realize such functionallity.

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• What are Interfaces and Delegates in c# ?

  - by karthik

  Since i am new to c#, would like to know about Interfaces and Delegates in c#, the difference between them and scenarios both these to be used. Please don't provide any links, i would like an explanation in simple words.

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• How to tell if ob_gzhandler is working?

  - by Amien

  How can I check to see if ob_start("ob_gzhandler"); is working and test the difference with or without it? Thanks,

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• The fundamentals of Hash tables?

  - by kylex

  I'm quite confused about the basic concepts of a Hash table. If I were to code a hash how would I even begin? What is the difference between a Hash table and just a normal array? Basically if someone answered this question I think all my questions would be answered: If I had 100 randomly generated numbers (as keys), how would I implement a hash table and why would that be advantageous over an array? Psuedo-code or Java would be appreciated as a learning tool...

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• UpdateLayout throwing an ambigious exception

  - by Ouais

  the stack trace displays my method's name then "external code" then app_unhandledexception method, I'm developing within VS2008 SP1 for silverlight on firefox and windows 7(if that makes a difference). the weird thing is, the updatelayout method is called elsewhere and it generates no exception there, that said, if I put the method within a try-catch clause, it doesn't catch the exception, so if anyone has an idea, I'd appreciate it.

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• Arithmetic + and Bitwise OR

  - by Mohanavel

  Is there any difference between Arithmetic + and bitwise OR. For the below operation i used arithmetic operation, my friend told that this is wrong. In what way this is differing. uint a = 10; uint b = 20; uint arithmeticresult = a + b; uint bitwiseOR = a | b; Both the results are 30.

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• Static and default constuctor

  - by Ram

  A non static class can have static as well as default constructor at the same time. What is the difference between these two constructors? When shall I go for only static or static with default constructor?

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• Need to write a daemon in linux, not sure what to use C++ or C

  - by Bluescrod

  Hello everyone, I have a little problem picking the right language to write my daemon, I am confused between C and C++, I want to use C++ because it is more expanded than C, but I want to use C because it is the starting point of everything in linux, I want to go for C++ as I have many resources about it, so, does it make any difference if I pick C++ instead of C? and what I will have good if I learn C more? I feel like if I go into C++ I will cover C within C++... Regards

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• C++ Structure v/s Class

  - by Ankur

  Hi, Please let me know whats the difference between a C++ structure and a C++ class apart from access specifier. I have seen inheritence , polymorphism in C++ structure?

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• Whats is active record A design Pattern OR A module

  - by piemesons

  Whats is active record "a design Pattern" OR "a module". Basically whats the difference between design pattern, module and some other terms we use.

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• Bash script if statements

  - by Jonhnny Weslley

  In Bash script, what is the difference between the following snippets? 1) Using single brackets: if [ "$1" = VALUE ] ; then # code fi 2) Using double brackets: if [[ "$1" = VALUE ]] ; then # code fi

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• Apache + mod_wsgi + django - large uploads timeout on IE but not on FF

  - by CrashRoX

  I'm running Apache, mod_wsgi and Django. Uploading a file over 100mb causes a timeout on IE 7 and 8, but successfully uploaded on Firefox 3.5. Specifically the error is "Internet Explorer cannot display the webpage". The timeout is not immediate, it runs for quite some time before it fails. Any suggestions? UPDATE: I set TimeOut to 1200 and it made no difference

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• MOD_REWRITE HELP!

  - by shahinkian

  I want to use mode rewrite to display the following: mydomain.com/Florida/Tampa/ instead of mydomain.com/place.php?state=Florida&city=Tampa I've akready done this: (since I think it might make a difference!) mydomain.com/[name].html instead of mydomain.com/profile?user=[name] Here is the code! Options +FollowSymLinks Options +Indexes RewriteEngine On RewriteBase / RewriteCond %{SCRIPT_FILENAME}! !-f RewriteCond %{SCRIPT_FILENAME}! !-d RewriteRule (.*).html profile.php?user=$1 [QSA.L]

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• What's the purpose of the unnamed namespace?

  - by bbazso

  In a .cpp file, if I decare a constant as follows: namespace { const int UDP_PORT_MIN = 1024; const int UDP_PORT_MAX = 65535; } vs. just: const int UDP_PORT_MIN = 1024; const int UDP_PORT_MAX = 65535; What's the difference between these two? I often see constant definitions declared in an unnamed namespace, so I was wondering what's the purpose of the unnamed namespace in this context?

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• When does n++ execute faster than n=n+1 ?

  - by gcc

  Related: http://stackoverflow.com/questions/24853/c-what-is-the-difference-between-i-and-i In C language, Why does n++ execute faster than n=n+1? (int n=...; n++;) (int n=...; n=n+1;) Our instructor asked that question in today's class. (this is not homework)

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• When should use Readonly and Get only properties

  - by Ram

  In a .NET application when should I use "ReadOnly" properties and when should I use just "Get". What is the difference between these two.

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• jquery css transform, why translate?

  - by Mark

  The CSS transform translate property, I don't get the difference between changing that value and changing the margin or position with css2. Where would you want to use transform? (ignoring the ie incompat for the moment)

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• (iphone) how can I tell I need a 3.0 + iOS installed device when looking at apple doc?

  - by Eugene

  Hi, I've seen iphone related open source library which says something like, "You need 4.0+ iOS build environment but the code will run on 3.0+ iOS device." I wonder how those two requirements can differ and how can I tell a minimum 'device' iOS version which a certain api would need. For instance I want to use UIGestureRecognizer but the apple doc says it's 3.2+, but I want my app run on 3.12+. Is there a difference between build os requirement and device os requirement to run an app? Thank you

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• Best three tier C# Implement "style"

  - by nXqd

  I'm new to C# three tier implement and I've found a lot of implementations in Internet. I don't know what difference and benefit from its . Thanks a lot for reading this and I'm waiting for your answers. And I really want to know your implementation :)

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• Class hierarchy of objective c in iphone -for xcode

  - by vijay

  i want to know what is the hierarchy we have in xcode first we have to get window and from that i have to understand completely if i use the class as property of another like this //child inherits the parents @interface child:parent { // parent *parentobject; child *child; } then what is the difference b/w the class behaviour while using the as property for another class then what is contrast between the inheritance and property

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• Date & time query question (sql-server 2008)

  - by Gold

  hi i have table that contain date and time field. id|date|time ========= 1|01/01/2001|10:45 2|01/02/2002|11:45 3|01/03/2003|12:45 4|01/04/2004|12:55 i need to know the difference between the MAX(date) and the MIN(date) and the MAX(time) and the MIN(time) something like.... MAX(date)-MIN(date) ???..... thank's in advance

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• hash_map and stdext:: hash_map?

  - by bit-question

  Under the visual C++, we have " hash_map" and "hash_set". In g++, we have " stdext::hash_map" and " stdext::hash_set". Is there any difference in terms of their respective performance or other factors?

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