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What exactly is nullptr?

...d::nullptr_t, and it's a prvalue (you cannot take the address of it using &). 4.10 about pointer conversion says that a prvalue of type std::nullptr_t is a null pointer constant, and that an integral null pointer constant can be converted to std::nullptr_t. The opposite direction is not allow...
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What does the 'b' character do in front of a string literal?

...x. So yes, b'...' literals in Python have the same purpose that they do in PHP. Also, just out of curiosity, are there more symbols than the b and u that do other things? The r prefix creates a raw string (e.g., r'\t' is a backslash + t instead of a tab), and triple quotes '''...''' or """...""" a...
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PHP expects T_PAAMAYIM_NEKUDOTAYIM?

...ember called $mouse, then foreach($cats as cat::$mouse) is perfectly valid php, but a statement with anything other than :: after the cat would be a syntax error. If $mouse were not a declared property of cat you would get a fatal error, but still not a syntax error. – chiliNUT...
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List all indexes on ElasticSearch server?

... list: curl -s localhost:9200/_aliases?pretty=true | awk -F\" '!/aliases/ && $2 != "" {print $2}' – Yaron Apr 21 '15 at 15:14 ...
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Execute raw SQL using Doctrine 2

...for running raw queries in Doctrine 2: forum.symfony-project.org/viewtopic.php?f=23&t=37872 – Jason Swett Mar 30 '12 at 15:11 ...
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What is setup.py?

...f you share your knowledge on how to create or handle this modules? For example, how to create a basic module, or how to test a script on ./mymodule/bin which imports from ./mymodule/libs/ – Paulo Oliveira Nov 23 '14 at 15:11 ...
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What is the best way to prevent session hijacking?

...nt != $_SESSION['ident']) { end_session(); header("Location: login.php"); // add some fancy pants GET/POST var headers for login.php, that lets you // know in the login page to notify the user of why they're being challenged // for login again, etc. } What this does is capture ...
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How to rename with prefix/suffix?

...th Brace Expansion. This simply expands a list of items in braces. For example: # echo {vanilla,chocolate,strawberry}-ice-cream vanilla-ice-cream chocolate-ice-cream strawberry-ice-cream So you can do your rename as follows: mv {,new.}original.filename as this expands to: mv original.filena...
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UILabel text margin [duplicate]

...sicContentSize so that it works with auto layout. I've added that to the sample code in @Brody's answer. – progrmr Jul 28 '14 at 13:02 10 ...
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Is it possible to move/rename files in Git and maintain their history?

... I believe you are correct. I was just trying to use php-cs-fixer to reformat the source for my Laravel 5 project but it insists on changing the capitalization of the namespace clauses to match the lowercase value of the app folder. But namespaces (or composer autoloads) only ...