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super() in Java
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super() calls the parent constructor with no arguments.
It can be used also with arguments. I.e. super(argument1) and it will call the constructor that accepts 1 parameter of the type of argument1 (if exists).
Also it can be used to call methods from the parent...
Where is virtualenvwrapper.sh after pip install?
...e, pointing towards virtualenvwrapper.sh. I've checked all the python and site-packages directories, and I can't find any virtualenvwrapper.sh. Is this something I need to download separately? Is pip not installing correctly?
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How can I get query string values in JavaScript?
...here a plugin-less way of retrieving query string values via jQuery (or without)?
73 Answers
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What's the difference between :: (double colon) and -> (arrow) in PHP?
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This means that -> is mostly used to access instance members (though it can also be used to access static members, such usage is discouraged), while :: is usually used to access static members (though in a few special cases, it's used to access instance members).
In general, :: is used for sc...
Swapping two variable value without using third variable
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Using the xor swap algorithm
void xorSwap (int* x, int* y) {
if (x != y) { //ensure that memory locations are different
*x ^= *y;
*y ^= *x;
*x ^= *y;
}
}
Why the test?
The test is to ensure that x and y have diffe...
file_put_contents(meta/services.json): failed to open stream: Permission denied
...follow
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edited Nov 5 '18 at 19:43
answered Jun 23 '14 at 15:17
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Getting the client's timezone offset in JavaScript
How can I gather the visitor's time zone information? I need the Timezone, as well as the GMT offset hours.
26 Answers
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Automatically start forever (node) on system restart
...stem restart. Is there any way I can automatically start the node server (with forever) when the system restarts?
15 Answer...
Find when a file was deleted in Git
I have a Git repository with n commits.
6 Answers
6
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Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...e DBMS!) may operate
contrary to this, so you'll want to
double-check with your target DBMS
before assuming all of this still holds.
I've been a Sybase ASE, MySQL, and SQL Server DBA on-and off since for almost a decade (along with application development in C, PHP, PL/SQL, C#.NET, and Ru...