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How to retrieve the hash for the current commit in Git?

...rev-parse --short HEAD Sidenote: If you want to turn references (branches and tags) into SHA-1, there is git show-ref and git for-each-ref. share | improve this answer | fol...
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Why do you have to call .items() when iterating over a dictionary in Python?

...f least astonishment, in would also have to take such a tuple as its left-hand operand in the containment check. How useful would that be? Pretty useless indeed, basically making if (key, value) in C a synonym for if C.get(key) == value -- which is a check I believe I may have performed, or wanted...
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What is the purpose of willSet and didSet in Swift?

...seems to be that sometimes, you need a property that has automatic storage and some behavior, for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is mo...
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MS-DOS Batch file pause with enter key

Is it possible in MS-DOS batch file to pause the script and wait for user to hit enter key? 5 Answers ...
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How do I show/hide a UIBarButtonItem?

... Save your button in a strong outlet (let's call it myButton) and do this to add/remove it: // Get the reference to the current toolbar buttons NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy]; // This is how you remove the button from the toolbar and animate it [toolb...
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How to delete every other line in Vim?

... You can use a macro for this. Do the following. Start in command mode. Go to the beginning of the file by pressing gg. Press qq. Click arrow down and press dd after. Press q. Press 10000@q PS: To go to command mode just press Escape a couple of times. ...
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Keyboard shortcut to paste clipboard content into command prompt window (Win XP) [closed]

...re a keyboard shortcut for pasting the content of the clipboard into a command prompt window on Windows XP (instead of using the right mouse button)? ...
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from jquery $.ajax to angular $http

...ethod) AngularJS will take care of converting JS objects into JSON string and setting headers (those are customizable) Callback functions are named success and error respectively (also please note parameters of each callback) - Deprecated in angular v1.5 use then function instead. More info of the...
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Should I use Java's String.format() if performance is important?

We have to build Strings all the time for log output and so on. Over the JDK versions we have learned when to use StringBuffer (many appends, thread safe) and StringBuilder (many appends, non-thread-safe). ...
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Make Visual Studio understand CamelCase when hitting Ctrl and cursor keys

Is there a way that I can configure Visual Studio 2008 to understand CamelCase? Specifically, I'd like to be able to get Ctrl + right or left cursor to take me to a subsection of a variable or type name. ...