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Selecting with complex criteria from pandas.DataFrame
...; from random import randint
>>> df = pd.DataFrame({'A': [randint(1, 9) for x in range(10)],
'B': [randint(1, 9)*10 for x in range(10)],
'C': [randint(1, 9)*100 for x in range(10)]})
>>> df
A B C
0 9 40 300
1 9 70 700
2 5 70 90...
curl : (1) Protocol https not supported or disabled in libcurl
I'm trying to install the Rails environments on Ubuntu 11.04. When I launch the command rvm install 1.9.2 --with-openssl-dir=/usr/local the following error is received:
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Best way to do nested case statement logic in SQL Server
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191
You could try some sort of COALESCE trick, eg:
SELECT COALESCE(
CASE WHEN condition1 THEN ...
Using ls to list directories and their total sizes
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1607
Try something like:
du -sh *
short version of:
du --summarize --human-readable *
Explan...
Does return stop a loop?
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221
Yes, return stops execution and exits the function. return always** exits its function immediate...
Calculating Pearson correlation and significance in Python
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16 Answers
16
Active
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Python memoising/deferred lookup property decorator
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12
For all sorts of great utilities I'm using boltons.
As part of that library you have cachedpro...
How do I get PHP errors to display?
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This always works for me:
ini_set('display_errors', '1');
ini_set('display_startup_errors', '1');
error_reporting(E_ALL);
However, this doesn't make PHP to show parse errors - the only way to show those errors is to modify your php.ini with this line:
display_errors = on
(...
What is the difference between an int and a long in C++?
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112
It is implementation dependent.
For example, under Windows they are the same, but for examp...
Simple C example of doing an HTTP POST and consuming the response
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188
+50
A messa...