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What are the rules about using an underscore in a C++ identifier?

...e allowed to add template specializations, though.) From the 2003 C++ Standard: 17.4.3.1.2 Global names [lib.global.names] Certain sets of names and function signatures are always reserved to the implementation: Each name that contains a double underscore (__) or begins with an u...
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How do I reverse an int array in Java?

... And I would like to put validData.length / 2 part to the outside of the for-loop. – Jin Kwon Mar 10 '14 at 3:28 ...
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Remove .php extension with .htaccess

Yes, I've read the Apache manual and searched here. For some reason I simply cannot get this to work. The closest I've come is having it remove the extension, but it points back to the root directory. I want this to just work in the directory that contains the .htaccess file. ...
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How can I change the version of npm using nvm?

...S for my node work. It works totally fine for installing separate versions and switching between them. It also installs the latest version of NPM within each local .../bin folder along with the node binary. However, there doesn't seem to be any way to switch the version of NPM that I'm using (or at ...
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How Python web frameworks, WSGI and CGI fit together

... How WSGI, CGI, and the frameworks are all connected? Apache listens on port 80. It gets an HTTP request. It parses the request to find a way to respond. Apache has a LOT of choices for responding. One way to respond is to use CGI to r...
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What is the difference between “screen” and “only screen” in media queries?

What is the difference between screen and only screen in media queries? 5 Answers ...
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How do I associate a Vagrant project directory with an existing VirtualBox VM?

...irtualBox VM, so that when I vagrant up Vagrant will import the base-box and create a new virtual machine. 10 Answers ...
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Java maximum memory on Windows XP

...ate 1400 megabytes for Java SE running on 32-bit Windows XP (Java 1.4, 1.5 and 1.6). 13 Answers ...
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Count number of rows within each group

I have a dataframe and I would like to count the number of rows within each group. I reguarly use the aggregate function to sum data as follows: ...
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What does void* mean and how to use it?

...d *func(void* i); , what does this void* mean here for the function name and for the variable type, respectively? 10 Ans...