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What is better, adjacency lists or adjacency matrices for graph problems in C++?
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It depends on the problem.
Adjacency Matrix
Uses O(n^2) memory
It is fast to lookup and check for presence or absence of a specific edge
between any two nodes O(1)
It is slow to iterate over all edges
It is slow to add/...
Get attribute name value of
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edited Jul 10 '14 at 15:08
gung - Reinstate Monica
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What are the differences between the threading and multiprocessing modules?
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What Giulio Franco says is true for multithreading vs. multiprocessing in general.
However, Python* has an added issue: There's a Global Interpreter Lock that prevents two threads in the same process from running Python code at the same time. This means that if yo...
How do you log all events fired by an element in jQuery?
... like to see all the events fired by an input field as a user interacts with it. This includes stuff like:
12 Answers
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python NameError: global name '__file__' is not defined
...ive shell.
Python Shell doesn't detect current file path in __file__ and it's related to your filepath in which you added this line
So you should write this line os.path.join(os.path.dirname(__file__)) in file.py. and then run python file.py, It works because it takes your filepath.
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How can I match on an attribute that contains a certain string?
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//div[contains(@class, 'atag') and contains(@class ,'btag')]
However, it will also find partial matches like class="catag bobtag".
If you don't want partial matches, see bobince's answer below.
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How to disable admin-style browsable interface of django-rest-framework?
I am using django-rest-framework . It provides an awesome Django admin style browsable self-documenting API. But anyone can visit those pages and use the interface to add data (POST). How can I disable it?
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When do we have to use copy constructors?
...iler creates a copy constructor for a class. In which case do we have to write a user-defined copy constructor? Can you give some examples?
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getActivity() returns null in Fragment function
I have a fragment (F1) with a public method like this
15 Answers
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How is an overloaded method chosen when a parameter is the literal null value?
..., as per section 15.12.2.5 of the JLS. In particular:
The informal intuition is that one method is more specific than another if any invocation handled by the first method could be passed on to the other one without a compile-time type error.
In your second case, both methods are still applica...