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Difference between std::system_clock and std::steady_clock?

What is the difference between std::system_clock and std::steady_clock ? (An example case that illustrate different results/behaviours would be great). ...
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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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Change directory command in Docker?

In docker I want to do this: 3 Answers 3 ...
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Difference between “git checkout ” and “git checkout -​- ”

http://norbauer.com/notebooks/code/notes/git-revert-reset-a-single-file 2 Answers 2 ...
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Use of undeclared identifier 'kUTTypeMovie'

I am getting the error message - Use of undeclared identifier 'kUTTypeMovie' 6 Answers ...
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How SignalR works internally?

Can anyone let me know how SignalR works internally in a high level way? 2 Answers 2 ...
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How to copy yanked text to VI command prompt

I want to know if there is any way by which I can paste yanked text to the command window. For instance if I have yanked a word and I want to grep it in some location I can't simply paste the word using 'p'. However if I copy it to clipboard, Shift-Insert will paste the same thing. ...
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CSS @font-face - what does “src: local('☺')” mean?

I'm using @font-face for the first time and downloaded a font-kit from fontsquirrel 3 Answers ...
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Block commenting in Ruby

Does Ruby have block comments? 4 Answers 4 ...
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Computational complexity of Fibonacci Sequence

I understand Big-O notation, but I don't know how to calculate it for many functions. In particular, I've been trying to figure out the computational complexity of the naive version of the Fibonacci sequence: ...