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How to close IPython Notebook properly?
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There still isn't a way to shut it down from inside the notebook UI, but I wrote nbmanager, a tool that can list and kill notebook servers and kernels.
– Thomas K
Dec 28 '14 at 11:21
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Why does printf not flush after the call unless a newline is in the format string?
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fflush(stdout); // Will now print everything in the stdout buffer
Edit: From Andy Ross's comment below, you can also disable buffering on stdout by using setbuf:
setbuf(stdout, NULL);
or its secure version setvbuf as explained here
setvbuf(stdout, NULL, _IONBF, 0);
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In C++, what is a virtual base class?
... foo() ;
int m_iValue ;
} ;
When you'll try to access m_iValue from D, the compiler will protest, because in the hierarchy, it'll see two m_iValue, not one. And if you modify one, say, B::m_iValue (that is the A::m_iValue parent of B), C::m_iValue won't be modified (that is the A::m_iVal...
Error in Swift class: Property not initialized at super.init call
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Quote from The Swift Programming Language, which answers your question:
“Swift’s compiler performs four helpful safety-checks to make sure
that two-phase initialization is completed without error:”
Safety check 1 ...
Why do pthreads’ condition variable functions require a mutex?
... changing it however).
It was technically possible for a thread to return from a condition wait without being kicked by another process (this is a genuine spurious wakeup) but, in all my many years working on pthreads, both in development/service of the code and as a user of them, I never once rece...
Is it safe to push_back an element from the same vector?
...nd is this article:
http://www.drdobbs.com/cpp/copying-container-elements-from-the-c-li/240155771
Inspection of libc++'s and libstdc++'s implementations shows that they are also safe.
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Sending data back to the Main Activity in Android
...en a child Activity is used to get user input - such as choosing a contact from a list or entering data in a dialog box. In this case you should use startActivityForResult to launch your child Activity.
This provides a pipeline for sending data back to the main Activity using setResult. The setResu...
Send JSON data via POST (ajax) and receive json response from Controller (MVC)
...swer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Sort array of objects by object fields
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Use usort, here's an example adapted from the manual:
function cmp($a, $b) {
return strcmp($a->name, $b->name);
}
usort($your_data, "cmp");
You can also use any callable as the second argument. Here are some examples:
Using anonymous functions (from...
Using JQuery - preventing form from submitting
How do I prevent a form from submitting using jquery?
13 Answers
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