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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/...
Can I store images in MySQL [duplicate]
I'm trying to develop a website where users upload their images as part of registration. I want it that for each image, there should be a thumb created with PHP (which is not that difficult). I want to save the thumbs (since they are very small) in the database and I use MySQL. (I don't want to save...
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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Get attribute name value of
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edited Jul 10 '14 at 15:08
gung - Reinstate Monica
10k66 gold badges5151 silver badges7272 bronze badges
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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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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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Get an object properties list in Objective-C
...pertyType(property);
NSString *propertyName = [NSString stringWithCString:propName
encoding:[NSString defaultCStringEncoding]];
NSString *propertyType = [NSString stringWithCString:propType
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How can I match on an attribute that contains a certain string?
...:
//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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getExtractedText on inactive InputConnection warning on android
...(20010): Skipped 30 frames! The application may be doing too much work on its main thread.
My situation:
I have an EditText view the user types into. The EditText gets cleared when user presses a button. Lots of inactive InputConnection entries stream out when I rapidly press the button.
Ex:
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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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