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Django - filtering on foreign key properties
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Asset.objects.filter( project__name__contains="Foo" )
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What's the difference between equal?, eql?, ===, and ==?
...d in the Kernel module, included in the Object class, which is the default root of all Ruby objects. Some classes such as Symbol and Integer use the default implementation, others like String and Hash provide their own implementations.
Symbol.instance_method(:hash).owner # Output: => Kernel
In...
How do I abort the execution of a Python script? [duplicate]
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Prints "aa! errors!" and exits with a status code of 1.
There is also an _exit() function in the os module. The sys.exit() function raises a SystemExit exception to exit the program, so try statements and cleanup code can execute. The os._exit() version doesn't do this. It just ends the program...
Reimport a module in python while interactive
...from the importlib library instead:
import importlib
importlib.reload(some_module)
If you are using python 3.2 or 3.3 you should:
import imp
imp.reload(module)
instead. See http://docs.python.org/3.0/library/imp.html#imp.reload
If you are using ipython, definitely consider using the autor...
How to detect total available/free disk space on the iPhone/iPad device?
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Original answer:
I found the following solution working for me:
-(uint64_t)getFreeDiskspace {
uint64_t totalSpace = 0;
uint64_t totalFreeSpace = 0;
NSError *error = nil;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSDic...
Installing Python packages from local file system folder to virtualenv with pip
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The equivalent easy_install command is easy_install --allow-hosts=None --find-links file:///srv/pkg/mypackage mypackage
– Wilfred Hughes
Dec 13 '17 at 16:23
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How to convert CFStringRef to NSString?
...e using ARC, the new casting syntax is as follows:
NSString *aNSString = (__bridge NSString *)aCFString;
works as well. The key thing to note is that CoreFoundation will often return objects with +1 reference counts, meaning that they need to be released (all CF[Type]Create format functions do th...
Check if object is file-like in Python
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why what about operators like __add__, __lshift__ or __or__ in custom classes? (file object and API: docs.python.org/glossary.html#term-file-object )
– n611x007
Sep 8 '12 at 12:56
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Getter and Setter declaration in .NET [duplicate]
...ed property. When the need arises you can expand your property to:
string _myProperty;
public string MyProperty
{
get { return _myProperty; }
set { _myProperty = value; }
}
Now you can add code that validates the value in your setter:
set
{
if (string.IsNullOrWhiteSpace(value))
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How to flush output of print function?
.../python3 to #!/usr/bin/python3 -u - now when you run your script (e.g. ./my_script.py) the -u will always be added for you
– James
Sep 7 at 17:22
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