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What is :: (double colon) in Python when subscripting sequences?

... 257 it means 'nothing for the first argument, nothing for the second, and jump by three'. It gets ...
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Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术

Oracle 11.2.0.4 RAC FOR redhat 6.41、安装REDHAT 6.41.1语言选择 中文 键盘布局 美国英语磁盘选择,我第一次安装忘了把磁盘柜断开了,断开再次安装,没有这个选项了选着...1、安装REDHAT 6.4 1.1语言选择 中文 键盘布局 美国英语 磁盘...
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Knight's Shortest Path on Chessboard

... 28 You have a graph here, where all available moves are connected (value=1), and unavailable moves...
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Rename Pandas DataFrame Index

...t with df.rename() only the column name is renamed. Bug? I'm on version 0.12.0 9 Answers ...
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How do you detect where two line segments intersect? [closed]

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What's the bad magic number error?

... stack trace when the import fails? As an aside, the first word of all my 2.5.1(r251:54863) pyc files is 62131, 2.6.1(r261:67517) is 62161. The list of all magic numbers can be found in Python/import.c, reproduced here for completeness (current as at the time the answer was posted, it may have chan...
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Python and pip, list all versions of a package that's available?

... (update: As of March 2020, many people have reported that yolk, installed via pip install yolk3k, only returns latest version. Chris's answer seems to have the most upvotes and worked for me) The script at pastebin does work. However it's not v...
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How can I get the intersection, union, and subset of arrays in Ruby?

...union def |(other) @set | other.set end end x = MultiSet.new([1,1,2,2,3,4,5,6]) y = MultiSet.new([1,3,5,6]) p x - y # [2,2,4] p x & y # [1,3,5,6] p x | y # [1,2,3,4,5,6] share | impro...
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廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术

廉价共享存储解决方案2-drbd+cman+gfs21、修改hosts文件[root@localhost ~]# vi etc hosts127.0.0.1localhost localhost.localdomain localhost4 localhost4.localdomain4...1、修改hosts文件 [root@localhost ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost...
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Why is lazy evaluation useful?

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