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How do you downgrade rubygems?
I have rubygems 1.3.1 installed but I want to go back to 1.2.0. What's the command to downgrade rubygems?
6 Answers
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What is the most efficient way to create a dictionary of two pandas Dataframe columns?
...: pd.Series(df.Letter.values,index=df.Position).to_dict()
Out[9]: {1: 'a', 2: 'b', 3: 'c', 4: 'd', 5: 'e'}
Speed comparion (using Wouter's method)
In [6]: df = pd.DataFrame(randint(0,10,10000).reshape(5000,2),columns=list('AB'))
In [7]: %timeit dict(zip(df.A,df.B))
1000 loops, best of 3: 1.27 ms...
How to sort git tags by version string order of form rc-X.Y.Z.W?
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Use version sort
git tag -l | sort -V
or for git version >= 2.0
git tag -l --sort=v:refname
git tag -l --sort=-v:refname # reverse
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Principal component analysis in Python
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28
You might have a look at MDP.
I have not had the chance to test it myself, but I've bookmar...
Regular Expression to reformat a US phone number in Javascript
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12 Answers
12
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ValueError: setting an array element with a sequence
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260
From the code you showed us, the only thing we can tell is that you are trying to create an ar...
Installing Google Protocol Buffers on mac
...uld like to install the older version of Google Protocol Buffers (protobuf-2.4.1) on mac using Terminal command line. I tried with brew install protobuf , but the latest version 2.5.0 has been installed. Is it possible to install the older version from terminal.
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How do you use colspan and rowspan in HTML tables?
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112
I'd suggest:
table {
empty-cells: show;
border: 1px solid #000;
}
table td,
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What's the difference between eval, exec, and compile?
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542
The short answer, or TL;DR
Basically, eval is used to evaluate a single dynamically generated P...