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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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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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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 to rotate a bitmap 90 degrees
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256
You can also try this one
Matrix matrix = new Matrix();
matrix.postRotate(90);
Bitmap scale...
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...
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...
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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pytest: assert almost equal
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249
I noticed that this question specifically asked about py.test. py.test 3.0 includes an approx(...
How to increase font size in a plot in R?
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answered Nov 22 '10 at 2:41
Dirk EddelbuettelDirk Eddelbuettel
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