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str performance in python
...time.
>>> import dis
>>> dis.dis(lambda: str(100000))
8 0 LOAD_GLOBAL 0 (str)
3 LOAD_CONST 1 (100000)
6 CALL_FUNCTION 1
9 RETURN_VALUE
>>> dis.dis(lambda: '%s' % 100000)
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Rails mapping array of hashes onto single hash
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answered Aug 8 '12 at 1:54
cjhvealcjhveal
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Annotating text on individual facet in ggplot2
...ta.frame(mpg = 15,wt = 5,lab = "Text",
cyl = factor(8,levels = c("4","6","8")))
p + geom_text(data = ann_text,label = "Text")
It should work without specifying the factor variable completely, but will probably throw some warnings:
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how to check redis instance version?
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edited Aug 13 '18 at 7:32
answered Feb 4 '14 at 15:03
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Cannot serve WCF services in IIS on Windows 8
When I try to serve a WCF service on IIS in a Windows 8 machine, I get the well known error
6 Answers
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)
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Unicode is not equal to UTF-8. The latter is just an encoding for the former.
You are doing it the wrong way around. You are reading UTF-8-encoded data, so you have to decode the UTF-8-encoded String into a unicode string.
So just replace .encode with...
How can I obtain the element-wise logical NOT of a pandas Series?
...ean Series, use ~s:
In [7]: s = pd.Series([True, True, False, True])
In [8]: ~s
Out[8]:
0 False
1 False
2 True
3 False
dtype: bool
Using Python2.7, NumPy 1.8.0, Pandas 0.13.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, bes...
Set encoding and fileencoding to utf-8 in Vim
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TL;DR
In the first case with set encoding=utf-8, you'll change the output encoding that is shown in the terminal.
In the second case with set fileencoding=utf-8, you'll change the output encoding of the file that is written.
As stated by @Dennis, you can set them...
Postgresql aggregate array
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edited Jun 13 '12 at 23:18
answered Jun 7 '12 at 8:56
Mich...
Efficient way to rotate a list in python
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287
A collections.deque is optimized for pulling and pushing on both ends. They even have a dedicat...