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What is the Python equivalent of static variables inside a function?
...e at the top instead of the bottom, you can create a decorator:
def static_vars(**kwargs):
def decorate(func):
for k in kwargs:
setattr(func, k, kwargs[k])
return func
return decorate
Then use the code like this:
@static_vars(counter=0)
def foo():
foo.coun...
How can we programmatically detect which iOS version is device running on? [duplicate]
...j/CJAMacros/blob/master/CJAMacros/CJAMacros.h
Like this:
#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersi...
What is the instanceof operator in JavaScript?
...there.
Every object in JavaScript has a prototype, accessible through the __proto__ property. Functions also have a prototype property, which is the initial __proto__ for any objects created by them. When a function is created, it is given a unique object for prototype. The instanceof operator uses...
Variable interpolation in the shell
...
Use
"$filepath"_newstap.sh
or
${filepath}_newstap.sh
or
$filepath\_newstap.sh
_ is a valid character in identifiers. Dot is not, so the shell tried to interpolate $filepath_newstap.
You can use set -u to make the shell exit with an...
How to sort a list of objects based on an attribute of the objects?
... work if the object has dynamically added attributes, (if you've done self.__dict__ = {'some':'dict'} after the __init__ method). I don't know why it sould be different, though.
– tutuca
Jan 7 '13 at 20:40
...
Getting Django admin url for an object
...written a small filter that I'd use like this: <a href="{{ object|admin_url }}" .... > ... </a>
9 Answers
...
Redirecting stdout to “nothing” in python
...eference to the original sys.stdout and set it back after. For example old_stdout = sys.stdout before any of the other code, then sys.stdout = old_stdout when you are done.
– Andrew Clark
Aug 20 '14 at 21:05
...
Should I be using object literals or constructor functions?
...on () {
return this.x + this.y + this.z;
}
};
var ObjCon = function(_x, _y, _z) {
var x = _x; // private
var y = _y; // private
this.z = _z; // public
this.add = function () {
return x + y + this.z; // note x, y doesn't need this.
};
};
// use the objects:
objLit.x = 3;
objLit...
How do I remove all .pyc files from a project?
...
This ignores .pyo files and __pycache__ directories. See my answer.
– Wilfred Hughes
Apr 7 '14 at 15:03
...
How to prevent gcc optimizing some statements in C?
...ode is portable to other compilers which don't understand GCC's #pragma or __attribute__ syntax.
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