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How do you delete all text above a certain line

... | edited Mar 22 '18 at 10:20 Rich 14.8k1414 gold badges7272 silver badges120120 bronze badges a...
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Get last n lines of a file, similar to tail

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Check if Python Package is installed

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Adding multiple class using ng-class

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Facebook database design?

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tmux set -g mouse-mode on doesn't work

... So this option has been renamed in version 2.1 (18 October 2015) From the changelog: Mouse-mode has been rewritten. There's now no longer options for: - mouse-resize-pane - mouse-select-pane - mouse-select-window - mode-mouse Instead there is just...
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Xcode 4 says “finished running ” on the targeted device — Nothing happens

... 4.2, and attempting to run on an earlier device (e.g. iPhone 3G, 2G, iPod 1st gen, etc) I have another solution. New projects created in Xcode 4.2 by default specify 'armv7' in the 'Required Device Capabilities'. You'll need to remove this if wanting to support devices that run armv6 (e.g. the iPh...
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Remove last character from string. Swift language

... let name: String = "Dolphin" let stringLength = count(name) // Since swift1.2 `countElements` became `count` let substringIndex = stringLength - 1 name.substringToIndex(advance(name.startIndex, substringIndex)) // "Dolphi" Alternatively (for a more practical, but less educational example) you can...
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How to remove focus around buttons on click

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surface plots in matplotlib

... 122 For surfaces it's a bit different than a list of 3-tuples, you should pass in a grid for the d...