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Why is __init__() always called after __new__()?
...ou're
subclassing an immutable type like
str, int, unicode or tuple.
From April 2008 post: When to use __new__ vs. __init__? on mail.python.org.
You should consider that what you are trying to do is usually done with a Factory and that's the best way to do it. Using __new__ is not a good clea...
What is the difference between named and positional parameters in Dart?
... parameters are referenced by name, they can be used in an order different from their declaration.
getHttpUrl('example.com', '/index.html');
getHttpUrl('example.com', '/index.html', port: 8080);
getHttpUrl('example.com', '/index.html', port: 8080, numRetries: 5);
getHttpUrl('example.com', '/index.h...
Why does Android use Java? [closed]
OK, this should really be asked to someone from Google, but I just want other opinions.
9 Answers
...
C# namespace alias - what's the point?
...ith extern aliases for using types with the same fully-qualified type name from different assemblies - rare, but useful to be supported.
Actually, I can see another use: when you want quick access to a type, but don't want to use a regular using because you can't import some conflicting extension...
MVVM in WPF - How to alert ViewModel of changes in Model… or should I?
...r specific messages. So you might broadcast a PlayerScoreHasChangedMessage from one object, and another object can subscribe to listen for those types of messages and update it's PlayerScore property when it hears one.
But I don't think this is needed for the system you have described.
In an ideal...
How to store custom objects in NSUserDefaults
...jectForKey:@"subcategory"];
}
return self;
}
Reading and writing from NSUserDefaults:
- (void)saveCustomObject:(MyObject *)object key:(NSString *)key {
NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];
NSUserDefaults *defaults = [NSUserDefaults standardU...
What happens if you call erase() on a map element while iterating from begin to end?
...C++03
Erasing elements in a map does not invalidate any iterators.
(apart from iterators on the element that was deleted)
Actually inserting or deleting does not invalidate any of the iterators:
Also see this answer:
Mark Ransom Technique
But you do need to update your code:
In your code you i...
What are queues in jQuery?
... hasn't started.
'inprogress' sentinel: Whenever you dequeue() a function from the fx queue, it will unshift() (push into the first location of the array) the string "inprogress" - which flags that the queue is currently being run.
It's the default! The fx queue is used by .animate() and all functi...
Encode String to UTF-8
...
@Michael: he is clearly having trouble getting bytes from string. How is getBytes(encoding) missing the point? I think second line is there just to check if he can convert it back.
– Peter Štibraný
Apr 20 '11 at 12:01
...
How do I check CPU and Memory Usage in Java?
...ge collection logging. You simply add -verbose:gc to the startup command.
From the Sun documentation:
The command line argument -verbose:gc prints information at every
collection. Note that the format of the -verbose:gc output is subject
to change between releases of the J2SE platform. For ...