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What's the difference between an id and a class?
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324
ids must be unique where as class can be applied to many things. In CSS, ids look like #elementI...
Why is “if not someobj:” better than “if someobj == None:” in Python?
... obj in ['', (), [], {}, 0, 0., A(), B(), C(), D(), None]:
... print '%4s: bool(obj) -> %5s, obj == None -> %5s, obj is None -> %5s' % \
... (repr(obj), bool(obj), obj == None, obj is None)
'': bool(obj) -> False, obj == None -> False, obj is None -> False
(): bool(...
How to write an async method with out parameter?
...ible on this MSDN thread: http://social.msdn.microsoft.com/Forums/en-US/d2f48a52-e35a-4948-844d-828a1a6deb74/why-async-methods-cannot-have-ref-or-out-parameters
As for why async methods don't support out-by-reference parameters?
(or ref parameters?) That's a limitation of the CLR. We chose to
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A Java collection of value pairs? (tuples?)
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Dave Jarvis
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answered Feb 6 '09 at 17:24
Paul BrinkleyPaul...
Is there a cross-browser onload event when clicking the back button?
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answered Oct 14 '08 at 14:32
user123444555621user123444555621
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What is the difference between linear regression and logistic regression?
...l in nature. For instance, yes/no, true/false, red/green/blue,
1st/2nd/3rd/4th, etc.
Linear regression is used when your response variable is continuous. For instance, weight, height, number of hours, etc.
Equation
Linear regression gives an equation which is of the form Y = mX + C,
means equat...
How can you profile a Python script?
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1414
Python includes a profiler called cProfile. It not only gives the total running time, but also...
Is there a practical use for weak references? [duplicate]
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49
If you want to keep a reference to something as long as it is used elsewhere e.g. a Listener, y...
How to clone ArrayList and also clone its contents?
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204
You will need to iterate on the items, and clone them one by one, putting the clones in your res...
Simple way to find if two different lists contain exactly the same elements?
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edited Mar 29 '18 at 6:42
answered Jul 2 '09 at 17:34
La...