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How to use permission_required decorators on django class-based views
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For those who didn't understand (like I did, at first) - the 'dispatch' method should be added to the ViewSpaceIndex class
– o_c
Feb 11 '16 at 16:27
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Doing something before program exit
How can you have a function or something that will be executed before your program quits? I have a script that will be constantly running in the background, and I need it to save some data to a file before it exits. Is there a standard way of doing this?
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PHP passing $_GET in linux command prompt
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Typically, for passing arguments to a command line script, you will use either argv global variable or getopt:
// bash command:
// php -e myscript.php hello
echo $argv[1]; // prints hello
// bash command:
// php -e myscript.php -f...
Blocks on Swift (animateWithDuration:animations:completion:)
...compiler that this closure takes a Bool labeled 'value' and returns void.
For reference, if you wanted to write a closure that returned a bool the syntax would be
{(value: Bool) -> bool in
//your stuff
}
share
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How to get the Power of some Integer in Swift language?
...2³ = 8
I used two carets so you can still use the XOR operator.
Update for Swift 3
In Swift 3 the "magic number" precedence is replaced by precedencegroups:
precedencegroup PowerPrecedence { higherThan: MultiplicationPrecedence }
infix operator ^^ : PowerPrecedence
func ^^ (radix: Int, power: ...
Quick easy way to migrate SQLite3 to MySQL? [closed]
...ned is: use an ORM class that abstracts specific database differences away for you. e.g. you get these in PHP (RedBean), Python (Django's ORM layer, Storm, SqlAlchemy), Ruby on Rails (ActiveRecord), Cocoa (CoreData)
i.e. you could do this:
Load data from source database using the ORM class.
Stor...
Threading pool similar to the multiprocessing Pool?
Is there a Pool class for worker threads , similar to the multiprocessing module's Pool class ?
9 Answers
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Why is there no xrange function in Python3?
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Some performance measurements, using timeit instead of trying to do it manually with time.
First, Apple 2.7.2 64-bit:
In [37]: %timeit collections.deque((x for x in xrange(10000000) if x%4 == 0), maxlen=0)
1 loops, best of 3: 1.05 ...
Migrating from JSF 1.2 to JSF 2.0
...rently using and which you want to use.
JSP 2.x to JSP 2.x = Almost no effort.
Facelets 1.x to Facelets 2.0 = Little effort.
JSP 2.x to Facelets 2.0 = Lot of effort. Double this if you also have custom components.
Basic changes
Regardless of the view technology switch, at least the following ...
Is there a difference between “==” and “is”?
...se Python caches small integer objects, which is an implementation detail. For larger integers, this does not work:
>>> 1000 is 10**3
False
>>> 1000 == 10**3
True
The same holds true for string literals:
>>> "a" is "a"
True
>>> "aa" is "a" * 2
True
>>>...