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When does invoking a member function on a null instance result in undefined behavior?

... Both (a) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute. The first thin...
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What is a MIME type?

I have been reading about how to build plug-ins and this "MIME type" keeps getting discussed in it. I have tried to look into it and know that it is Multipurpose Internet Mail Extensions (MIME) but no suitable explanation of how it relates to browser plug-ins, as in what I need to know about it for ...
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Wait for a process to finish

... solution for MacOS that does not use polling. – Alexander Mills Feb 28 '18 at 16:58 1 ...
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How do I restart nginx only after the configuration test was successful on Ubuntu?

When I restart the nginx service on a command line on an Ubuntu server, the service crashes when a nginx configuration file has errors. On a multi-site server this puts down all the sites, even the ones without configuration errors. ...
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How to send a simple string between two programs using pipes?

...r pipe can only connect two related processes. It is created by a process and will vanish when the last process closes it. A named pipe, also called a FIFO for its behavior, can be used to connect two unrelated processes and exists independently of the processes; meaning it can exist even if no one...
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Can I make git recognize a UTF-16 file as text?

I'm tracking a Virtual PC virtual machine file (*.vmc) in git, and after making a change git identified the file as binary and wouldn't diff it for me. I discovered that the file was encoded in UTF-16. ...
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How to exit pdb and allow program to continue?

I'm using the pdb module to debug a program. I'd like to understand how I can exit pdb and allow the program to continue onward to completion. The program is computationally expensive to run, so I don't want to exit without the script attempting to complete. continue doesn't seems to work. How can...
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Return string without trailing slash

... answered Jul 13 '11 at 14:52 ChanduChandu 72.1k1616 gold badges118118 silver badges122122 bronze badges ...
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Most efficient way to determine if a Lua table is empty (contains no entries)?

...e a habit of comparing to nil instead in the future, just as a good habit. And yes, I've been binding common utility functions to local vars for speed. Thanks for the input though. – Amber Aug 10 '09 at 1:41 ...
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Bootstrap close responsive menu “on click”

... I slide up a white div (as seen in attached). When in responsive (mobile and tablet), I would like to automaticly close the responsive navbar and only show the white bar. ...