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What is the purpose of .PHONY in a Makefile?

...y're not associated with files, e.g.: .PHONY: clean clean: rm -rf *.o Now make clean will run as expected even if you do have a file named clean. In terms of Make, a phony target is simply a target that is always out-of-date, so whenever you ask make <phony_target>, it will run, independ...
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WebSockets protocol vs HTTP

...each client to server message. - what about streaming of response body? i know, XMLHttpRequest API does not allow this, but it is exists. with streaming to the server you can stream from client side. – 4esn0k Feb 5 '13 at 16:48 ...
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Reading binary file and looping over each byte

... # Do stuff with byte. byte = f.read(1) python 3.8 From now on thanks to := operator the above code can be written in a shorter way. with open("myfile", "rb") as f: while (byte := f.read(1)): # Do stuff with byte. ...
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How to test code dependent on environment variables using JUnit?

... I know this question is old, but I wanted to say that this is the correct answer. The accepted answer encourages poor design with a hidden dependency on System, whereas this answer encourages a proper design treating System as j...
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Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?

...ype(8), .rest:nth-of-type(9), .rest:nth-of-type(10){ display:none; } Now you must be wondering what is the difference between nth-child and nth-of-type so this is the difference Suppose the html is <div class="one">...</div> <div class="two">...</div> <div class="...
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Should I use char** argv or char* argv[]?

... array, but instead it will be a pointer to the respective element type. Now, if you try to pass an array, what is passed instead is a pointer to the arrays' first element. Excursion: Functions as parameters For completion, and because I think this will help you better understand the matter, le...
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Build a simple HTTP server in C [closed]

... Don't read RFC 2616 now, it obsoleted by: RFC 7230, RFC 7231, RFC 7232, RFC 7233, RFC 7234, RFC 7235 – songhir Jun 10 '14 at 12:53 ...
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Filter rows which contain a certain string

... option 1 is to know for sure that dplyr loaded last. option 2 is you prefix dplyr::filter. – userJT Mar 1 '16 at 14:30 ...
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Will docker container auto sync time with the host machine?

...ning your container with -v /etc/localtime:/etc/localtime:ro Instead, for now, you have to periodically run this on OSX: /usr/local/bin/boot2docker ssh sudo ntpclient -s -h pool.ntp.org Update for users of Kitematic If you are running Kitematic, which is now the suggested mechanism for getting...
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Performance of foreach, array_map with lambda and array_map with static function

... Thanks for the benchmarks. However, I would like to know why there is such difference. Is it because of a function call overhead? – Pavel S. Jan 25 '14 at 13:06 ...