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Determine if Python is running inside virtualenv
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error: ‘NULL’ was not declared in this scope
...ot a keyword. It's an identifier defined in some standard headers. You can include
#include <cstddef>
To have it in scope, including some other basics, like std::size_t.
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What is an .inc and why use it?
I often see examples in PHP that include.inc files. What is the meaning of .inc? What it is used for? What are the disadvantages and advantages of using it?
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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
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How to calculate a time difference in C++
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if you are using c++11, here is a simple wrapper (see this gist):
#include <iostream>
#include <chrono>
class Timer
{
public:
Timer() : beg_(clock_::now()) {}
void reset() { beg_ = clock_::now(); }
double elapsed() const {
return std::chrono::duration_cast&l...
Can I change the viewport meta tag in mobile safari on the fly?
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