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• Visual Studio 2010 ADO.NET Data Model vs Linq to SQL

  - by LaGrad

  What's the difference between the two? They seem to have the same functionality at first glance. Which one has faster performance which one is easier to use?

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• Is () requested for invoking a Flex ActionScript constructor?

  - by Steve Kuo

  In Flex ActionScript, a new object can be instantiated via the parameterless constructor with or without (). Example: var array:ArrayCollection = new ArrayCollection() or var array:ArrayCollection = new ArrayCollection Is there are difference between these two? Is one preferred over the other?

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• Why do I need the isset() function in php?

  - by Chris

  I am trying to understand the difference between this: if (isset($_POST['Submit'])) { //do something } and if ($_POST['Submit']) { //do something } It seems to me that if the $_POST['Submit'] variable is true, then it is set. Why would I need the isset() function in this case?

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• Use of viewDidUnoad

  - by user338111

  What is the use of viewDidUnload and didReceiveMemoryWarning methods? When they actually get called? what are the difference between dealloc, viewDidUnload and didrecievedmemorywarning?

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• Differens between page["propertyName"] and page.property["propertyName"] in EPiServer?

  - by Clean

  Hi, What is the difference between accessing a property through page["propertyName"] and page.Property["propertyName"] in EPiServer? Thanx!

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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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• What is the most efficient way to create emtpy ListBuffer ?

  - by drypot

  What is the most efficient way to create emtpy ListBuffer ? val l1 = new mutable.ListBuffer[String] val l2 = mutable.ListBuffer[String] () val l3 = mutable.ListBuffer.empty[String] There are any pros and cons in difference ?

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• detect a postback from a radiobutton list

  - by user228777

  I am trying to detect a postback from Radiobutton list. I am trying to use following code: If Page.Request.Params.Get("__EVENTTARGET") = optDownload.UniqueID.ToString Then But Page.Request.Params.Get("__EVENTTARGET") returns "ctl00$ContentPlaceHolder1$pnlBarAccounts$i0$i2$i0$CHChecking$Acct1$optDownload$4" And = optDownload.UniqueID.ToString returns "ctl00$ContentPlaceHolder1$pnlBarAccounts$i0$i2$i0$CHChecking$Acct1$optDownload" There is a difference in last 2 characters, how do I detect a postback from Radiobutton list?

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• C++[MSVC2010]: How does switch compile and how optimized and fast is it?

  - by ekul

  As I found out that I can use only numerical values in C++'s switch statements, I thought that there then must be some deeper difference between it and a bunch of if-else's. Therefore I asked myself: (How) does switch differ from if-elseif-elseif in terms of runtime speed, compile time optimization and general compilation? I'm mainly speaking of MSVC here.

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• In Ruby why won't `foo = true unless defined?(foo)` make the assignment?

  - by LeftHem

  What's going on here? What is the subtle difference between the two forms of "unless"? > irb(main):001:0> foo = true unless defined?(foo) => nil irb(main):002:0> unless defined?(fooo) ; fooo = false ; end => false thx

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• Base64url and Base64 facebook

  - by Shekhar_Pro

  I have actually 2 questions: 1)What is the difference between base64url encoding and base64 encoding and 2)How base64url encode is different from Facebooks base64url encode because facebook mentions that it sends url in a form of base64url but with no padding and two different characters. http://developers.facebook.com/docs/authentication/canvas (under Why Sign calls) Can anyone plese provide a pseudocode with explaination for converting to and from each other.

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• Php_value memory_limit? what happens if increased?

  - by DAVID

  Hi guys i have this in my htaccess file, i was wondering what is it for ? what happens if i increase it to say 128mb or 16mb what difference would it make

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• Flex AdvanceDatagrid

  - by udara

  What is the difference between normal datagrid and advance datagrid.Sorting,draging columns,resizing columns are supported even in normal datagrid. I want to add footer details like summery,average etc of each column,does AdvanceDataGrid supports these features?

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• if `int != 1` or `int == 0`?

  - by Emil

  Hey. I was coding here the other day, writing a couple of if statements with ints that are always either zero or one (~bools), and I asked myself: Should I use if (int == 1) or if (int != 0) ? Is there any difference at all? Please, don't answer with stuff regarding the int may being more/less than 1/0, that's not what I want to know.

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• What is the advantage of using constraints on C# Generics

  - by user313197

  Can someone tell me what the difference is between the following public class CarCollection:List where T:Car { } and public class CarCollection:List { } To me they seem to do the same thing, create type-safe collection of "Car" objects.

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• Determining if an item is a string or a list in Erlang

  - by Zubair

  I am writing a program that can have either a list or a string as an argument. How can I tell the difference between a string and a list programmatically in Erlang. Something like: print(List) -> list; print(String) -> string.

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• Blackberry persistance: ObjectGroup createGroup vs. createGroupIgnoreTooBig

  - by Tamar

  What is the difference between the createGroup and createGroupIgnoreTooBig? I understand that createGroup will throw the too big exception when the object exceeds 64k, and createGroupIgnoreTooBig will not. But does it mean that createGroupIgnoreTooBig allows me to create objects larger than 64k, or will it only partially group it?

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• basic differences between oracle and SQL Server?

  - by I__

  i am going on a job interview and have zero experience with ms sql, however i have 1 year with oracle. is there such a huge difference between the two? what programming questions can i expect?

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• appendChild + createElement

  - by user317005

  what's the difference between var div = document.createElement('div');//output -> [object HTMLDivElement] document.getElementById('container').appendChild(div); and var div = '<div></div>'; document.getElementById('container').appendChild(div);//output -> <div></div> shouldn't both be the same? and if not, how do i get the 2nd version to work?

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• Declaration of pointers in C++

  - by user265260

  In C++ whats the difference between char const *ptr=&ch; and const char *ptr=&ch;

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• how to substract two sums based on different field values in one table (view)

  - by user1749640

  example: i need the numbers of which the sum of the amount where id = 1 is not equal of the sum of the amount where id < 1, together with the id's and difference. The table (view in this case) may look like this: NUMBER AMOUNT ID 0001 500 1 0001 500 2 0002 400 3 0003 299 1 0003 300 3 0003 300 3 Many thanks for your help on this one.

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• Need background sound + play once

  - by Eme

  I have a script and when it detects a difference it plays a little alert sound. When it alerts the sound plays but loops, how can I stop this?

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• About registers Values !!

  - by the-ifl

  Hi Guys ! Well I want to kNow About The Difference Between "registers Variables" In C And "Normal Variables" And Thnks !

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• Throwing exceptions in ASP.NET C#

  - by Chris Westbrook

  Is there a difference between just saying throw; and throw ex; assuming ex is the exception you're catching?

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• Should i use a C function or Obj-C Method?

  - by Daniel Granger

  I'm about to create a function which adds to NSDateComponents together is there any advantage to putting this in a C style function or should it go in a Obj-C method? Is there ever a reason to use one rather then the other or should I always stick to Obj-C? BTW: Not that it makes any difference I'm sure but this is for an app on the iPhone Many thanks

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