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Checking for empty queryset in Django
...is the code I refer to is only an example that it contains a line if not my_objects: to demonstrate that this is how they do it in the docs. All else is utterly irrelevant so I do not get your point. They could as well make a thousand queries and it would still be totally irrelevant as this is not t...
What's the fastest way to loop through an array in JavaScript?
...our code
i++
}
I would say, this is definitely a case where I applaud JavaScript engine developers. A runtime should be optimized for clarity, not cleverness.
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What is the maximum recursion depth in Python, and how to increase it?
...mple context manager like this:
import sys
class recursionlimit:
def __init__(self, limit):
self.limit = limit
self.old_limit = sys.getrecursionlimit()
def __enter__(self):
sys.setrecursionlimit(self.limit)
def __exit__(self, type, value, tb):
sys.setr...
Core dump file analysis [duplicate]
...ts possible to run gdb path/to/the/binary path/to/the/core when coredumped app is not compiled with -g flag, but path/to/the/binary is same version app, but with -g flag?
– PSIAlt
Nov 18 '12 at 10:45
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Get the first element of each tuple in a list in Python [duplicate]
...
Use a list comprehension:
res_list = [x[0] for x in rows]
Below is a demonstration:
>>> rows = [(1, 2), (3, 4), (5, 6)]
>>> [x[0] for x in rows]
[1, 3, 5]
>>>
Alternately, you could use unpacking instead of x[0]:
res_li...
static constructors in C++? I need to initialize private static objects
...t ordinary class.
class StaticStuff
{
std::vector<char> letters_;
public:
StaticStuff()
{
for (char c = 'a'; c <= 'z'; c++)
letters_.push_back(c);
}
// provide some way to get at letters_
};
class Elsewhere
{
static StaticStuff staticSt...
How to install XNA game studio on Visual Studio 2012?
...t;/SupportedProducts>
Don't forget to clear/delete your cache in %localappdata%\Microsoft\VisualStudio\12.0\Extensions.
You may have to run the command to tells Visual Studio that new extensions are available. If you see an 'access denied' message, try launching the console as an administrator. ...
How to check if Receiver is registered in Android?
...ter and set flag
this won't work If you restart the device or if your app got killed by
OS. – amin 6 hours ago
@amin - see lifetime of in code (not system registered by manifest entry) registered receiver :)
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How do you add a Dictionary of items into another Dictionary
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@animal_chin Because we have to implement half of the language ourselves? Yes. Impressed. Don't get me wrong I love operator overloading. I just don't love having to use it for basic features that should be built in.
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What is the purpose of the vshost.exe file?
When I create and compile a "Hello, World!" application in C#, I get three files in the Debug folder apart from the main exe (e.g. HelloWorld.exe)
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