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Custom dealloc and ARC (Objective-C)

In my little iPad app I have a "switch language" function that uses an observer. Every view controller registers itself with my observer during its viewDidLoad: . ...
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Co-variant array conversion from x to y may cause run-time exception

I have a private readonly list of LinkLabel s ( IList<LinkLabel> ). I later add LinkLabel s to this list and add those labels to a FlowLayoutPanel like follows: ...
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How to test if list element exists?

... This is actually a bit trickier than you'd think. Since a list can actually (with some effort) contain NULL elements, it might not be enough to check is.null(foo$a). A more stringent test might be to check that the name is actually defined in the list: foo <- list(a...
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How to fallback to local stylesheet (not script) if CDN fails

I am linking to the jQuery Mobile stylesheet on a CDN and would like to fall back to my local version of the stylesheet if the CDN fails. For scripts the solution is well known: ...
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Efficient paging in SQLite with millions of records

I need to show the SQLite results in a list view. Of course, I need to page the results. 1 Answer ...
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Event listener for when element becomes visible?

I am building a toolbar that is going to be included into a page. the div it is going to be included in will default to display:none . Is there a way i can put an event listener on my toolbar to listen for when it becomes visible so it can initialize? or will I have to pass it a variable from the c...
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Undoing a git rebase

... The easiest way would be to find the head commit of the branch as it was immediately before the rebase started in the reflog... git reflog and to reset the current branch to it (with the usual caveats about being absolutely sure before reseting with t...
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Reason to Pass a Pointer by Reference in C++?

Under which circumstances would you want to use code of this nature in c++? 6 Answers ...
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Unix tail equivalent command in Windows Powershell

I have to look at the last few lines of a large file (typical size is 500MB-2GB). I am looking for a equivalent of Unix command tail for Windows Powershell. A few alternatives available on are, ...
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How do I change tab size in Vim?

Every time I add a selector in CSS and I press Enter to define the properties it ends up like this: 6 Answers ...