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Background:

For the following older questions, I found them by using the search noted in Let's clean up the "this is a duplicate" answers:

is:answer isaccepted:1 body:"duplicate" url:"*stackoverflow.com/*"

The following questions contain an accepted answer which notes the duplicate question. (For simplicity, I've included the excerpt from the accepted answer in the first question which may be a duplicate of the second question.)

My Question:

Are these questions too old to be closed as duplicates? Or if not, Should they be closed? Should I flag question pairs like these as duplicates or not?

  • There are appears to be hesitation in closing them as several have a few votes, but none have enough to close? Some of these questions are over two years old?
  • I believe that all of these questions almost exactly duplicate the questions as noted.
  • It appears that most if not all of these are fairly open and shut cases -- for all of them, the OP marked the answer (which I've linked to) as accepted and it contains the a note of the duplicate.
  • My favorite by far is #17 which the answerer included:

Marking this as CW because it's not meant as an answer but the reason for closevoting as duplicate

And yet they aren't closed?


Currently Open

1. Jquery: calculating width of hidden input

May be a duplicate of jQuery - Get Width of Element when Not Visible (Display: None)

Also, this appears to be a duplicate of: jQuery - Get Width of Element when Not Visible (Display: None)

2. to validate date in aspx

May be a duplicate of date validation

this is a duplicate of this question: date validation answers there. Edit: duplicate in that being an aspx page really makes no difference. You can embed the code in the aspx page or better yet use a code behind class.

3. clear FileUpload object on c#

May be a duplicate of How to prevent repeated postbacks from confusing my business layer

Here are some links: (1) How to prevent repeated postbacks from confusing my business layer and (2) Asp.Net SQL Refresh page duplicate inserts?`

4. .NET 3.5 WinForms: Changing the value in DataGridViewComboxBoxCell modifies other ComboBox controls on the form

May be a duplicate of How to separate the selected item of two combobox with a single DataSource?

How to separate the selected item of two combobox with a single DataSource? Duplicate question. Still, this seems ridiculously stupid - we have to clone datasources for WinForms?

5. Flex: time how long HTTPService takes to load?

May be a duplicate of In Flex, is there a way to determine how long an HTTPService.send() call takes round-trip?

This is a duplicate, go here to see my previous answer to the question: In Flex, is there a way to determine how long an HTTPService.send() call takes round-trip?

6. Unable to perfom LINQ on this XML

May be a duplicate of My linq-query doesn't work when adding the xmlns-attribute to the root-element in my XML-document

The issue is not with your SolutionProfile tags, but rather the presence of the xmlns attribute in it. Duplicate of an existing SO question. Look here for the exact answer.

7. Filtering with Fiddler

May be a duplicate of Filter Fiddler traffic

Basically a duplicate of Filter Fiddler traffic . Just go to the Filters tab in Fiddler and then the "Client Process" fieldset and then choose "Show only traffic from " and choose the appropriate process.

8. Extract Json values as Map with lift-json

May be a duplicate of Can I use the Scala lift-json library to parse a JSON into a Map?

Somehow I missed the duplicate of this in my search: Can I use the Scala lift-json library to parse a JSON into a Map?

9. MySQL - The Installation Failed on Snow Leopard

May be a duplicate of Re-install MySql in mac os x 10.6.6

There is a duplicate of this question here with a solution to follow here.

10. Writing ALL program output to a txt file in C++

May be a duplicate of How can I redirect stdout to some visible display in a Windows Application?

This is a duplicate of: this question

11. How to create a friendly date format (for example "submitted 2 days ago")

May be a duplicate of How do I calculate relative time?

This is a duplicate of this question

12. elisp how to check if Shift key is pressed

May be a duplicate of Can I send a <shift> keypress to Windows from Emacs?

Duplicate question (ignoring the 'Windows' part of the other one).

Can I send a keypress to Windows from Emacs?

13. Jquery Update Browser Location, Don't Redirect

May be a duplicate of Is there a way to change the browser's address bar without refreshing the page?

Exact duplicate of #352343 Changing browser’s address bar without refreshing.

update: HTML5 now allows pushState, but only within the same domain.

14. Screen-scraping of a secure page of any site on https:// with asp.net in C#

May be a duplicate of Screen scraping HTTPS using C#

See also this duplicate question

15. Verifying Mercurial Changesets are from who they say they're from

May be a duplicate of Verify Mercurial Checkins

Ry4an also pointed out this (essentially duplicate) question with some good answers that confirm what I'd found elsewhere.

16. Is there a decent html editor that works in-browser?

May be a duplicate of http://stackoverflow.com/q/1505761/317773

Duplicate of http://stackoverflow.com/questions/1505761/textarea-with-syntax-code-highlighting and Textarea that can do syntax highlighting on the fly?

17. what does $this mean within a class definition?

May be a duplicate of What is the meaning of $this

Please see the PHP Manual on Classes and Objects. $this refers to the object instance. Also see these questions:

Marking this as CW because it's not meant as an answer but the reason for closevoting as duplicate

18 . XML Comments -- How (or where) do you create XML comments for your namespaces and library?

May be a duplicate of Namespace documentation on a .Net project (Sandcastle)?

Since the question is tagged with "sandcastle", I assume you are indeed using it. If so, this SO answer should give the details.

Update: OK, I just (in that same thread) saw that apparently Sandcastle understands NamespaceDoc-classes as well. Somebody might want to close this question as a duplicate.

19. Post/Redirect/Get in Webkit causes a full page reload

May be a duplicate of Full page reload on Post/Redirect/Get ignoring cache control

Also, this question is a duplicate of "Full page reload on Post/Redirect/Get ignoring cache control".


Already Closed

1. Is there a way to identify an element on the page at a specified location in javascript?

Closed as a duplicate of How do I find the DOM node that is at a given (X,Y) position? (Hit test)

(This is a duplicate of How do I find the DOM node that is at a given (X,Y) position? (Hit test))

share|improve this question
    
12. is actually not a duplicate - the linked question is about the reverse process. –  Paŭlo Ebermann Sep 4 '11 at 13:24
    
10. Also is not really a duplicate, even if the accepted answer says so. This question has two parts, one of them asking about the strange behaviour of sOutFile << stdout;, which is not explained in the other question. –  Paŭlo Ebermann Sep 4 '11 at 13:43

2 Answers 2

To answer your original questions:

  • I think these should be closed, no matter how old they are.
  • The hesitation to close-vote is mainly caused by people not knowing that these are duplicates ... and nobody looks at old questions.
  • Whether you should flag these for moderator attention, I'm not sure. Wait for a moderator's comment. It could be that them being here already helps a lot for people to vote on them.

I'm going through the list and will vote everywhere where I think you are right.

share|improve this answer

About #17 ($this in PHP):

There are more similar posts.

  1. what does $this mean within a class definition? (accepted answer mentions 2. and 3.)
  2. What does the variable $this mean in PHP? (your proposal)
  3. What is the meaning of $this (has a close-vote to 4.)
  4. How to explain 'this' keyword in a best and simple way?
  5. What does $this mean in PHP? (closed as duplicate for 6., also a link to 4)
  6. PHP: self vs. $this
  7. $this vs function name (has an old duplicate vote to 1.)
  8. Where's the difference between self and $this-> in a PHP class or PHP method? (old duplicate vote for 6.)
  9. PHP: This and Self (closed as duplicate of 6.)
  10. Meaning of $this-> in CakePHP (links to 6.)
  11. Referencing $this->User from within UsersController - CakePHP (link to 6., old duplicate vote for 10.)
  12. Help me understand how is $this used in PHP (Has no links at all, but the accepted answer looks like a quite good explanation.)
  13. what is the function of self keyword in php (closed as duplicate of 6.)

I'm not quite sure which one we should select as the canonical question/answer here.

Not a duplicate:

share|improve this answer
1  
There may be a discrepancy as to which question(s) it is closed as a duplicate of, but I don't think that's a reason not to close it. (Several of these provide directly applicable, useful answer of questions which are essentially 98% duplicates) –  M. Tibbits Sep 4 '11 at 15:49
    
Perhaps we should be more agressive in merging? –  M. Tibbits Sep 4 '11 at 15:52

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