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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...
Fastest way to count exact number of rows in a very large table?
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edited Mar 28 '18 at 14:37
Felipe Augusto
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Logic to test that 3 of 4 are True
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248
I suggest writing the code in a manner that indicates what you mean. If you want 3 values to be ...
Redirect non-www to www in .htaccess
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absiddiqueLive
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answered Aug 21 '12 at 8:09
Randall HuntRandall Hunt
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Difference in System. exit(0) , System.exit(-1), System.exit(1 ) in Java
... range:
1-127 are user defined codes (so generated by calling exit(n))
128-255 are codes generated by termination due to different unix signals like SIGSEGV or SIGTERM
But I don't think you should care while coding on Java, it's just a bit of information. It's useful if you plan to make your pro...
download and install visual studio 2008 [closed]
...
Visual Studio 2008: (3,30 GB)
http://download.microsoft.com/download/8/1/d/81d3f35e-fa03-485b-953b-ff952e402520/VS2008ProEdition90dayTrialENUX1435622.iso
MSDN Library 2008: (2,15 GB)
http://www.microsoft.com/downloads/info.aspx?na=90&p=&...
What does the number in parentheses shown after Unix command names in manpages mean?
... Jeroen
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answered Sep 15 '08 at 13:42
Ian GIan G
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Adding two numbers concatenates them instead of calculating the sum
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edited Aug 20 '19 at 18:38
Peter Mortensen
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How to sort with a lambda?
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8
Shouldn't it be operator<, not operator>?
– Warpspace
Sep 11 '13 at 10:02
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undefined method `source_index' for Gem:Module (NoMethodError)
... this problem myself while trying to upgrade an older Rails app from REE 1.8.7 to 1.9.3-p385. Oddly, Ruby 1.9.3-p327 works just fine. What it came down to was ruby-1.9.3-p385 had installed RubyGems version 2.0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been deprec...