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Is returning by rvalue reference more efficient?

... I had always assumed the dangling reference problem went away automagically when the return type was an r-value reference. Glad I got that straighted out before it bit me. Stack smashing bugs suck. – deft_code Jul 15 '09 at 3:03 ...
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Semicolons superfluous at the end of a line in shell scripts?

...e superfluous, since the newline is also a command separator. case specifically needs double semicolons at the end of the last command in each pattern block; see help case for details. share | impro...
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Django 1.7 - makemigrations not detecting changes

... may happen due to the following reasons: You did not add the app in INSTALLED_APPS list in settings.py (You have to add either the app name or the dotted path to the subclass of AppConfig in apps.py in the app folder, depending on the version of django you are using). Refer documentation: INST...
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Migrating from JSF 1.2 to JSF 2.0

... JSP 2.x If you're using JSP 2.x and want to keep using it, then you basically don't need to change anything else. Gradually upgrading If you're already using a suffix url-pattern for the FacesServlet, like *.jsf, then it's good to know that the FacesServlet will first scan for *.xhtml file and ...
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Why do most fields (class members) in Android tutorial start with `m`?

...art with a lower case letter. Public static final fields (constants) are ALL_CAPS_WITH_UNDERSCORES. Note that the linked style guide is for code to be contributed to the Android Open Source Project. It is not a style guide for the code of individual Android apps. ...
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How to “properly” create a custom object in JavaScript?

...e result is that in mixed company you will have a mishmash of metaclasses, all behaving slightly differently. What's worse, most JavaScript tutorial material is terrible and serves up some kind of in-between compromise to cover all bases, leaving you very confused. (Probably the author is also confu...
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Proper Repository Pattern Design in PHP?

...te a complete example of a basic controller for viewing and editing Users. All code must be fully testable and mockable. The controller should have no idea where the data is stored (meaning it can be changed). Example to show a SQL implementation (most common). For maximum performance, controllers s...
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How do I get the path to the current script with Node.js?

... So basically you can do this: fs.readFile(path.resolve(__dirname, 'settings.json'), 'UTF-8', callback); Use resolve() instead of concatenating with '/' or '\' else you will run into cross-platform issues. Note: __dirname is the l...
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Opening Android Settings programmatically

How can I open settings programmatically? 11 Answers 11 ...
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How do you mock out the file system in C# for unit testing?

... Edit: Install the NuGet package System.IO.Abstractions. This package did not exist when this answer was originally accepted. The original answer is provided for historical context below: You could do it by creating an interface: inter...