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Painless way to install a new version of R?
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75
Just for completeness, there are some ways to prevent you from having this problem. As Dirk said...
What exactly does the .join() method do?
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Look carefully at your output:
5wlfgALGbXOahekxSs9wlfgALGbXOahekxSs5
^ ^ ^
I've highlighted the "5", "9", "5" of your original string. The Python join() method is a string method, and takes a list of things to join with th...
MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...查看集群状态,可以看到192.168.1.3已经作为Master运行
5 节点类型
MongoDB的节点类型有主节点(Master)，副本节点(Slave或者称为Secondary)，仲裁节点，Secondary-Only节点，Hidden节点，Delayed节点和Non-Voting节点。
仲裁节点不存储数据，...
Formula to determine brightness of RGB color
...minance?
Luminance (standard for certain colour spaces): (0.2126*R + 0.7152*G + 0.0722*B) [1]
Luminance (perceived option 1): (0.299*R + 0.587*G + 0.114*B) [2]
Luminance (perceived option 2, slower to calculate): sqrt( 0.241*R^2 + 0.691*G^2 + 0.068*B^2 ) → sqrt( 0.299*R^2 + 0.587*G^2 + 0.114*B^...
Where do I use delegates? [closed]
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Dale RaganDale Ragan
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scp or sftp copy multiple files with single command
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Lambda function in list comprehensions
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Guillaume Jacquenot
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answered May 20 '11 at 18:41
Winston EwertWinston ...
How can you automatically remove trailing whitespace in vim
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l0b0
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answered Dec 10 '08 at 14:03
Paul D. Ede...
Loading local JSON file
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DᴀʀᴛʜVᴀᴅᴇʀ
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answered Sep 8 '11 at 10:30
seppo0010seppo0010
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Floating point vs integer calculations on modern hardware
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35
Alas, I can only give you an "it depends" answer...
From my experience, there are many, many va...