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Proxies with Python 'Requests' module
...', proxies=urllib.request.getproxies())
It works really well and urllib knows about getting Mac OS X and Windows settings as well.
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Execute code when Django starts ONCE only?
...
Update from Pykler's answer below: Django 1.7 now has a hook for this
Don't do it this way.
You don't want "middleware" for a one-time startup thing.
You want to execute code in the top-level urls.py. That module is imported and executed once.
urls.py
from django...
What is the difference between is_a and instanceof?
... must accept an Object as the first argument, but PHP versions >= 5.3.9 now accept an optional third boolean argument $allow_string (defaults to false) to allow comparisons of string class names instead:
class MyBaseClass {}
class MyExtendingClass extends MyBaseClass {}
// Original behavior, ev...
How to chain scope queries with OR instead of AND?
...ou would do
Person.where('name=? OR lastname=?', 'John', 'Smith')
Right now, there isn't any other OR support by the new AR3 syntax (that is without using some 3rd party gem).
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What is the logic behind the “using” keyword in C++?
...the using keyword can bring member functions into scope. In C++11, you can now do this for constructors (another Bjarne Stroustrup example):
class Derived : public Base {
public:
using Base::f; // lift Base's f into Derived's scope -- works in C++98
void f(char); // provide a new f ...
How to uninstall editable packages with pip (installed with -e)
... install --editable .
Uninstall:
rm -r $(find . -name '*.egg-info')
Now you can use:
pip uninstall package_name
or python setup.py develop --uninstall or python setup.py develop -u
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Templated check for the existence of a class member function?
...
return 0;
}
I've just tested it with Linux and gcc 4.1/4.3. I don't know if it's portable to other platforms running different compilers.
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Gitignore not working
...m your system use: git rm --cached filename
To untrack every file that is now in your .gitignore:
First commit any outstanding code changes, and then, run this command:
git rm -r --cached .
This removes any changed files from the index(staging area), then just run:
git add .
Commit it:
git ...
How to use clock() in C++
...d::chrono::high_resolution_clock Clock;
int main()
{
auto t1 = Clock::now();
auto t2 = Clock::now();
std::cout << "Delta t2-t1: "
<< std::chrono::duration_cast<std::chrono::nanoseconds>(t2 - t1).count()
<< " nanoseconds" << std:...
Compiling with cython and mingw produces gcc: error: unrecognized command line option '-mno-cygwin'
... error with ld. But this is a different question. I will post it tomorrow. Now need some rest... why is so difficult to compile in windows?
– joaquin
May 17 '11 at 20:54
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