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How can you detect the version of a browser?
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27 Answers
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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...
Pandas get topmost n records within each group
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Did you try df.groupby('id').head(2)
Ouput generated:
>>> df.groupby('id').head(2)
id value
id
1 0 1 1
1 1 2
2 3 2 1
4 2 2
3 7 3 1
4 8 4 1
(Keep in mind that you might nee...
SQL Server: Filter output of sp_who2
Under SQL Server, is there an easy way to filter the output of sp_who2? Say I wanted to just show rows for a certain database, for example.
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
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answered May 22 '11 at 4:11
Caley WoodsCaley Woods
4,62944 gold badges2626 silver badges3636 bronze badges
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What is the difference between int, Int16, Int32 and Int64?
What is the difference between int , System.Int16 , System.Int32 and System.Int64 other than their sizes?
10 Answers
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nonlocal keyword in Python 2.x
I'm trying to implement a closure in Python 2.6 and I need to access a nonlocal variable but it seems like this keyword is not available in python 2.x. How should one access nonlocal variables in closures in these versions of python?
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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...rray. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
7 Answers
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Write a function that returns the longest palindrome in a given string
I thought of a solution but it runs in O(n^2) time
22 Answers
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“for loop” with two variables? [duplicate]
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201
If you want the effect of a nested for loop, use:
import itertools
for i, j in itertools.prod...