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Extracting specific columns from a data frame
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answered Apr 19 '15 at 21:19
Sam FirkeSam Firke
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No secret option provided to Rack::Session::Cookie warning?
I am running Rails 3.2.3, Ruby 1.9 under Fedora 17. I get this warning, when I run rails s , and how do I fix?
7 Answers
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How do you plot bar charts in gnuplot?
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124
Simple bar graph:
set boxwidth 0.5
set style fill solid
plot "data.dat" using 1:3:xtic(2) wi...
How do I check what version of Python is running my script?
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21 Answers
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Active
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不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...题的时候，可以自动切换到备防火墙上。第一台设备 ASG 425 支持OSPF...拓扑如下
主机A ，B有两个可用路由要实现主备切换，当主防火墙出现问题的时候，可以自动切换到备防火墙上。
第一台设备 ASG 425 支持OSPF BGP PIM路由协...
Change column type from string to float in Pandas
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+200
You have four main options for converting types in pandas:
to_numeric() - provides functionality to safely convert non-numeric type...
Omitting the second expression when using the if-else shorthand
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269
This is also an option:
x==2 && dosomething();
dosomething() will only be called if...
Javascript: formatting a rounded number to N decimals
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That's not a rounding ploblem, that is a display problem. A number doesn't contain information ...
How to find the installed pandas version
...ion__:
In [76]: import pandas as pd
In [77]: pd.__version__
Out[77]: '0.12.0-933-g281dc4e'
Pandas also provides a utility function, pd.show_versions(), which reports the version of its dependencies as well:
In [53]: pd.show_versions(as_json=False)
INSTALLED VERSIONS
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commit: ...
How to tell Jackson to ignore a field during serialization if its value is null?
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1122
To suppress serializing properties with null values using Jackson >2.0, you can configure th...