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Read an Excel file directly from a R script
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12 Answers
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In-memory size of a Python structure
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146
The recommendation from an earlier question on this was to use sys.getsizeof(), quoting:
>...
Why are dates calculated from January 1st, 1970?
Is there any reason behind using date(January 1st, 1970) as default standard for time manipulation? I have seen this standard in Java as well as in Python. These two languages I am aware of. Are there other popular languages which follows the same standard?
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WinDBG用法详解 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
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Reverse Range in Swift
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185
Update For latest Swift 3 (still works in Swift 4)
You can use the reversed() method on a ran...
Inline labels in Matplotlib
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mask = (xy[:,0] >= 0) & (xy[:,0] < N) & (xy[:,1] >= 0) & (xy[:,1] < N)
xy = xy[mask]
# add to pop
for p in xy:
pop[l][tuple(p)] = 1.0
# find whitespace, nice place for labels
ws = 1.0 - (np.sum(pop, axis=0) > 0) *...
How to determine if a decimal/double is an integer?
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14 Answers
14
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Latest jQuery version on Google's CDN
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182
UPDATE 7/3/2014: As of now, jquery-latest.js is no longer being updated.
From the jQuery blog:...
Is there a Python function to determine which quarter of the year a date is in?
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13 Answers
13
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how do I insert a column at a specific column index in pandas?
... the beginning
df.insert(loc, column, value)
df = pd.DataFrame({'B': [1, 2, 3], 'C': [4, 5, 6]})
df
Out:
B C
0 1 4
1 2 5
2 3 6
idx = 0
new_col = [7, 8, 9] # can be a list, a Series, an array or a scalar
df.insert(loc=idx, column='A', value=new_col)
df
Out:
A B C
0 7 1 ...