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Android - Package Name convention
...l files while developing on android).
The reason for having it in reverse order is to do with the layout on the storage media. If you consider each period ('.') in the application name as a path separator, all applications from a publisher would sit together in the path hierarchy.
So, for instance,...
When to use reinterpret_cast?
...is true that reinterpret_cast is not portable because of one reason - byte order (endianness). But this is often surprisingly the best reason to use it. Let's imagine the example: you have to read binary 32bit number from file, and you know it is big endian. Your code has to be generic and works pro...
How are feature_importances in RandomForestClassifier determined?
...s a list of DecisionTreeClassifier (as mentioned in the documentation). In order to compute the feature_importances_ for the RandomForestClassifier, in scikit-learn's source code, it averages over all estimator's (all DecisionTreeClassifer's) feature_importances_ attributes in the ensemble.
In Deci...
Getting key with maximum value in dictionary?
... I thought dict is unsorted, couldn't d.keys and d.values theoretically be ordered differently?
– Dimath
Apr 1 '15 at 13:28
1
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Example for boost shared_mutex (multiple reads/one write)?
... the number of readers. Let each reader take one count of the semaphore in order to read, that way they can all read at the same time. Then let the writer take ALL the semaphore counts prior to writing. This causes the writer to wait for all reads to finish and then block out reads while writing.
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What's the difference between lists and tuples?
..., while lists are homogeneous sequences. Tuples have structure, lists have order.
Using this distinction makes code more explicit and understandable.
One example would be pairs of page and line number to reference locations in a book, e.g.:
my_location = (42, 11) # page number, line number
Yo...
RESTful API methods; HEAD & OPTIONS
I'm writing a RESTful API module for an application in PHP, and I'm a bit mixed on the verbs HEAD and OPTIONS .
3 Answer...
Django South - table already exists
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Perform these steps in order may help you:
1) python manage.py schemamigration apps.appname --initial
Above step creates migration folder as default.
2) python manage.py migrate apps.appname --fake
generates a fake migration.
3) python manage....
Finding duplicate values in a SQL table
...s unpredictable and you need sql_mode=only_full_group_by:
GROUP BY lname ORDER BY showing wrong results;
Which is the least expensive aggregate function in the absence of ANY() (see comments in accepted answer).
Oracle isn't mainstream enough (warning: humour, I don't know about Oracle).
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How to use Boost in Visual Studio 2010
...ould be noted that you must choose Tools > Settings > Expert Mode in order to even see the property sheets. Took me some googling to finally find this out...
– Zack The Human
Aug 18 '10 at 0:41
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