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Change one value based on another value in pandas
I'm trying to reprogram my Stata code into Python for speed improvements, and I was pointed in the direction of PANDAS. I am, however, having a hard time wrapping my head around how to process the data.
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Code Golf: Lasers
The shortest code by character count to input a 2D representation of a board, and output 'true' or 'false' according to the input .
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How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
I am just starting to think about how api keys and secret keys work. Just 2 days ago I signed up for Amazon S3 and installed the S3Fox Plugin . They asked me for both my Access Key and Secret Access Key, both of which require me to login to access.
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Class type check in TypeScript
...onScript, it is possible to check the type at run-time using the is operator :
3 Answers
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VB.NET equivalent of C# property shorthand?
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There is no shorthand for Visual Studio 2008 or prior for VB.NET.
In Visual Studio 2010 and beyond, you can use the following shorthand:
public property FirstName as String
This will be handled as your short version in C# is - I think...
Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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pandas.isnull() (also pd.isna(), in newer versions) checks for missing values in both numeric and string/object arrays. From the documentation, it checks for:
NaN in numeric arrays, None/NaN in object arrays
Quick example:
import pandas as pd
import numpy as np
s = pd.Series(['...
CMake: Print out all accessible variables in a script
... --help-variables option. I'm talking about my variables that I defined, or the variables defined by included scripts.
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check if jquery has been loaded, then load it if false
... @Pawel I've seen some implementations insert the element before/after the first script tag, since you know there has to be one of those.
– Daniel LeCheminant
Jul 31 '12 at 12:23
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Inheriting class methods from modules / mixins in Ruby
... include adds instance methods, extend adds class methods. This is how it works. I don't see inconsistency, only unmet expectations :)
– Sergio Tulentsev
May 21 '12 at 21:49
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Excluding directories in os.walk
I'm writing a script that descends into a directory tree (using os.walk()) and then visits each file matching a certain file extension. However, since some of the directory trees that my tool will be used on also contain sub directories that in turn contain a LOT of useless (for the purpose of thi...