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Simple way to calculate median with MySQL
What's the simplest (and hopefully not too slow) way to calculate the median with MySQL? I've used AVG(x) for finding the mean, but I'm having a hard time finding a simple way of calculating the median. For now, I'm returning all the rows to PHP, doing a sort, and then picking the middle row, but ...
What is a singleton in C#?
What is a Singleton and when should I use it?
16 Answers
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Selecting the last value of a column
...spreadsheet with some values in column G. Some cells are empty in between, and I need to get the last value from that column into another cell.
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How to delete a file or folder?
...os.rmdir() removes an empty directory.
shutil.rmtree() deletes a directory and all its contents.
Path objects from the Python 3.4+ pathlib module also expose these instance methods:
pathlib.Path.unlink() removes a file or symbolic link.
pathlib.Path.rmdir() removes an empty directory.
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How does grep run so fast?
..., earlier I used to use substring method in java but now I use GREP for it and it executes in a matter of seconds, it is blazingly faster than java code that I used to write.(according to my experience I might be wrong though)
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The following untracked working tree files would be overwritten by merge, but I don't care
...his will track all files, remove all of your local changes to those files, and then get the files from the server.
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How to do relative imports in Python?
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I don't understand: where is the answer here? How can one import modules in such a directory structure?
– Tom
Sep 29 '12 at 16:34
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How to scale threads according to CPU cores?
...termined the number of processors available, create that number of threads and split up your work accordingly.
Update: To further clarify, a Thread is just an Object in Java, so you can create it just like you would create any other object. So, let's say that you call the above method and find tha...
AsyncTaskLoader vs AsyncTask
Since Honeycomb and the v4 Compatibility Library it is possible to use AsyncTaskLoader . From what I understand, the AsyncTaskLoader can survive through config changes like screen flips.
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Test if a command outputs an empty string
How can I test if a command outputs an empty string?
11 Answers
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