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MAC addresses in JavaScript

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How to safely open/close files in python 2.4

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How should the ViewModel close the form?

...: protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); MainWindow window = new MainWindow(); var viewModel = new MainWindowViewModel(); viewModel.RequestClose += window.Close; window.DataContext = viewModel; window.Show...
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Declaring variables inside or outside of a loop

...performance requirements instead of having to go all over your entire code base and tweak and hack things in order to squeeze clock cycles here and there. share | improve this answer | ...
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How to use SCNetworkReachability in Swift

... Swift 3, IPv4, IPv6 Based on the Martin R's answer: import SystemConfiguration func isConnectedToNetwork() -> Bool { guard let flags = getFlags() else { return false } let isReachable = flags.contains(.reachable) let needsConnec...
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redirect COPY of stdout to log file from within bash script itself

... I made some little "sourceable" scripts based on this. Can use them in a script like . log or . log foo.log: sam.nipl.net/sh/log sam.nipl.net/sh/log-a – Sam Watkins Jul 16 '15 at 3:22 ...
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Add a space (“ ”) after an element using :after

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Which are more performant, CTE or temporary tables?

...Notice in the plan above there is no mention of CTE1. It just accesses the base tables directly and is treated the same as SELECT A, ABS(B) AS Abs_B, F FROM T WHERE A = 780 Rewriting by materializing the CTE into an intermediate temporary table here would be massively counter pr...
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How does one output bold text in Bash?

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How to determine the content size of a UIWebView?

...ds rectangle. Subclasses can override this method to return a custom value based on the desired layout of any subviews. For example, a UISwitch object returns a fixed size value that represents the standard size of a switch view, and a UIImageView object returns the size of the image it is currently...