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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
I have a data frame df and I use several columns from it to groupby :
7 Answers
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How to run Django's test database only in memory?
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if 'test' in sys.argv:
DATABASES['default'] = {'ENGINE': 'sqlite3'}
And finally in Django 1.3 and 1.4:
if 'test' in sys.argv:
DATABASES['default'] = {'ENGINE': 'django.db.backends.sqlite3'}
(The full path to the backend isn't strictly necessary with Django 1.3, but makes the setting fo...
How to get a substring between two strings in PHP?
... one but really don't think it's the best way to go). Thinking of strpos and substr functions.
Here's an example:
32 A...
CGContextDrawImage draws image upside down when passed UIImage.CGImage
...GContextDrawImage method gets the underlying raw image data with no understanding of orientation.
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How to set custom favicon in Express?
I recently started working in Node.js and in the app.js file there is this line:
13 Answers
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What encoding/code page is cmd.exe using?
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Yes, it’s frustrating—sometimes type and other programs
print gibberish, and sometimes they do not.
First of all, Unicode characters will only display if the
current console font contains the characters. So use
a TrueType font like Lucida Console instead of the...
How does git compute file hashes?
... | shasum
8ab686eafeb1f44702738c8b0f24f2567c36da6d
Source: http://alblue.bandlem.com/2011/08/git-tip-of-week-objects.html
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Remove first element from $@ in bash [duplicate]
...ed into the script. However, the first argument shouldn't be looped over, and instead needs to be checked before the loop.
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what is the difference between a portlet and a servlet?
I am asked to work on portlets and portals.
5 Answers
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Difference between Array and List in scala
In what cases I should use Array(Buffer) and List(Buffer). Only one difference that I know is that arrays are nonvariant and lists are covariant. But what about performance and some other characteristics?
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