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Setting variable to NULL after free
In my company there is a coding rule that says, after freeing any memory, reset the variable to NULL . For example ...
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In Django, how does one filter a QuerySet with dynamic field lookups?
Given a class:
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Sample random rows in dataframe
I am struggling to find the appropriate function that would return a specified number of rows picked up randomly without replacement from a data frame in R language? Can anyone help me out?
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“X does not name a type” error in C++
I have two classes declared as below:
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How do you force a CIFS connection to unmount
I have a CIFS share mounted on a Linux machine. The CIFS server is down, or the internet connection is down, and anything that touches the CIFS mount now takes several minutes to timeout, and is unkillable while you wait. I can't even run ls in my home directory because there is a symlink pointin...
std::function vs template
Thanks to C++11 we received the std::function family of functor wrappers. Unfortunately, I keep hearing only bad things about these new additions. The most popular is that they are horribly slow. I tested it and they truly suck in comparison with templates.
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Why is a 3-way merge advantageous over a 2-way merge?
Wikipedia says a 3-way merge is less error-prone than a 2-way merge, and often times doesn't need user intervention. Why is this the case?
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Is there a way to provide named parameters in a function call in JavaScript?
I find the named parameters feature in C# quite useful in some cases.
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Using std Namespace
There seem to be different views on using 'using' with respect to the std namespace.
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What is an NP-complete in computer science?
What is an NP-complete problem? Why is it such an important topic in computer science?
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