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Why does Java's Arrays.sort method use two different sorting algorithms for different types?
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edited Jul 3 '18 at 18:21
rogerdpack
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Difference between author and committer in Git?
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3 Answers
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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...]: df.drop_duplicates(subset='A', keep="last")
Out[10]:
A B
1 1 20
3 2 40
4 3 10
You can do also something like:
In [12]: df.groupby('A', group_keys=False).apply(lambda x: x.loc[x.B.idxmax()])
Out[12]:
A B
A
1 1 20
2 2 40
3 3 10
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What is the maximum number of characters that nvarchar(MAX) will hold?
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How can I set the aspect ratio in matplotlib?
... = im[0].get_extent()
ax.set_aspect(abs((extent[1]-extent[0])/(extent[3]-extent[2]))/aspect)
data = np.random.rand(10,20)
fig = plt.figure()
ax = fig.add_subplot(111)
ax.imshow(data)
ax.set_xlabel('xlabel')
ax.set_aspect(2)
fig.savefig('equal.png')
ax.set_aspect('auto')
fig.savefig('auto.png'...
Rails.env vs RAILS_ENV
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According to the docs, #Rails.env wraps RAILS_ENV:
# File vendor/rails/railties/lib/initi...
Get current stack trace in Ruby without raising an exception
I want to log the current backtrace (stacktrace) in a Rails 3 app without an exception occurring. Any idea how?
3 Answers...
Adding a y-axis label to secondary y-axis in matplotlib
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Stretch child div height to fill parent that has dynamic height
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edited Oct 5 '16 at 7:03
answered Nov 4 '13 at 13:44
Mr_...
Convert a list to a dictionary in Python
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from itertools import izip
i = iter(a)
b = dict(izip(i, i))
In Python 3 you could also use a dict comprehension, but ironically I think the simplest way to do it will be with range() and len(), which would normally be a code smell.
b = {a[i]: a[i+1] for i in range(0, len(a), 2)}
So the iter(...