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What is size_t in C?

... From Wikipedia: According to the 1999 ISO C standard (C99), size_t is an unsigned integer type of at least 16 bit (see sections 7.17 and 7.18.3). size_tis an unsigned data type defined by several C/C++ standards, e.g. the C99 ISO/IEC 9899 standard, that ...
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JQuery - $ is not defined

...e $ variable. You have JavaScript running before the page is fully loaded, and as such, before jQuery is fully loaded. First of all, ensure, what script is call properly, it should looks like <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"&g...
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filter for complete cases in data.frame using dplyr (case-wise deletion)

...works, of course. But that is a) verbose when there are a lot of variables and b) impossible when the variable names are not known (e.g. in a function that processes any data.frame). ...
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What do the different readystates in XMLHttpRequest mean, and how can I use them?

XMLHttpRequest has 5 readyState s, and I only use 1 of them (the last one, 4 ). 5 Answers ...
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Getting only response header from HTTP POST using curl

...rite the protocol headers to the specified file. This option is handy to use when you want to store the headers that a HTTP site sends to you. Cookies from the headers could then be read in a second curl invocation by using the -b, --cookie option! The -c, --...
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How to make child process die after parent exits?

...t when its parent dies. This value is cleared for the child of a fork(2) and (since Linux 2.4.36 / 2.6.23) when executing a set-user-ID or set-group-ID binary. – qrdl Dec 10 '16 at 19:46 ...
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Dynamically set local variable [duplicate]

...ntrary to other answers already posted you cannot modify locals() directly and expect it to work. >>> def foo(): lcl = locals() lcl['xyz'] = 42 print(xyz) >>> foo() Traceback (most recent call last): File "<pyshell#6>", line 1, in <module> foo() ...
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Why isn't sizeof for a struct equal to the sum of sizeof of each member?

...y alignment constraints. Data structure alignment impacts both performance and correctness of programs: Mis-aligned access might be a hard error (often SIGBUS). Mis-aligned access might be a soft error. Either corrected in hardware, for a modest performance-degradation. Or corrected by emulation...
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What does “error: option --single-version-externally-managed not recognized” indicate?

...not recognized when pip install ing varions packages (including PyObjC and astropy ). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has changed. ...
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How can I combine two commits into one commit? [duplicate]

...a branch 'firstproject' with 2 commits. I want to get rid of these commits and make them appear as a single commit. 3 Answ...