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Apply .gitignore on an existing repository already tracking large number of files

... This answer solved my problem: First of all, commit all pending changes. Then run this command: git rm -r --cached . This removes everything from the index, then just run: git add . Commit it: git commit -m ".gitignore is now working" ...
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What's the need of array with zero elements?

... This is a way to have variable sizes of data, without having to call malloc (kmalloc in this case) twice. You would use it like this: struct bts_action *var = kmalloc(sizeof(*var) + extra, GFP_KERNEL); This used to be not standard and was considered a hack (as Aniket said), but it was s...
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How to make good reproducible pandas examples

...s. Disclaimer: Writing a good question is HARD. The Good: do include small* example DataFrame, either as runnable code: In [1]: df = pd.DataFrame([[1, 2], [1, 3], [4, 6]], columns=['A', 'B']) or make it "copy and pasteable" using pd.read_clipboard(sep='\s\s+'), you can format the text for Sta...
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How to detect if app is being built for device or simulator in Swift

... ... #endif After Swift 4.1 version Latest use, now directly for all in one condition for all types of simulators need to apply only one condition - #if targetEnvironment(simulator) // your simulator code #else // your real device code #endif For more clarification, you can check S...
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Execute code when Django starts ONCE only?

... entirely a separate problem. The idea of special one-time startup before all management commands is hard to understand. You'll have to provide something specific. Perhaps in another question. – S.Lott Feb 13 '12 at 12:49 ...
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difference between foldLeft and reduceLeft in Scala

...e between reducing and folding The difference is not the implementation at all, just look at the signatures. The question doesn't have anything to do with Scala in particular, it's rather about the two concepts of functional programming. Back to your question: Here is the signature of foldLeft (c...
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retrieve links from web page using python and BeautifulSoup [closed]

...ref'): print(link['href']) The BeautifulSoup documentation is actually quite good, and covers a number of typical scenarios: https://www.crummy.com/software/BeautifulSoup/bs4/doc/ Edit: Note that I used the SoupStrainer class because it's a bit more efficient (memory and speed wise), if you...
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Returning binary file from controller in ASP.NET Web API

...rn result; } A few things to note about the stream used: You must not call stream.Dispose(), since Web API still needs to be able to access it when it processes the controller method's result to send data back to the client. Therefore, do not use a using (var stream = …) block. Web API will di...
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Blocks on Swift (animateWithDuration:animations:completion:)

... dat completion block syntax :( – Chris Allinson Sep 25 '16 at 0:19 add a comment  |  ...
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How to send a PUT/DELETE request in jQuery?

...ch as PUT and DELETE, can also be used here, but they are not supported by all browsers." from: api.jquery.com/jQuery.ajax/#options – andilabs Dec 2 '13 at 8:11 23 ...