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Differences between git pull origin master & git pull origin/master
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edited May 21 '10 at 16:53
answered May 21 '10 at 16:36
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How to find the length of a string in R
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edited Jun 21 '12 at 9:18
answered Jun 21 '12 at 9:04
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Only read selected columns
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1 2009 -41 -27 -25 -31 -31 -39
2 2010 -41 -27 -25 -31 -31 -39
3 2011 -21 -27 -2 -6 -10 -32
Change "integer" to one of the accepted types as detailed in ?read.table depending on the real type of data.
data.txt looks like this:
$ cat data.txt
"Year" "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul...
Filtering a list based on a list of booleans
...ct [2, 6] ?
– Florent
May 30 '18 at 21:03
I get it, list(compress(list_a, [not i for i in fill])) should return [2, 6]...
莱昂氏unix源代码分析 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术
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1.1 UNIX操作系统 209
1.2 公用程序 209
1.3 其他文档 210
1.4 UNIX程序员手册 210
1.5 UNIX文档 211
1.6 UNIX操作系统源代码 211
1.7 源代码中各部分 212
1.8 源代码文件 212
1.9 分析的使用 212
1.10 对程序设计水平的一条注释...
Add a new element to an array without specifying the index in Bash
... highest index + 1.
– mklement0
Sep 21 '12 at 3:01
4
Is there something like that in bash version...
Convert UTC datetime string to local datetime
...= tz.tzlocal()
# utc = datetime.utcnow()
utc = datetime.strptime('2011-01-21 02:37:21', '%Y-%m-%d %H:%M:%S')
# Tell the datetime object that it's in UTC time zone since
# datetime objects are 'naive' by default
utc = utc.replace(tzinfo=from_zone)
# Convert time zone
central = utc.astimezone(to_z...
How to declare constant map
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answered Aug 20 '13 at 18:21
squiguysquiguy
28k66 gold badges4747 silver badges5555 bronze badges
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Turn Pandas Multi-Index into column
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edited Oct 21 '14 at 21:02
Will
9,68888 gold badges5959 silver badges7171 bronze badges
a...
List comprehension rebinds names even after scope of comprehension. Is this right?
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answered Nov 16 '10 at 21:48
Steven RumbalskiSteven Rumbalski
38.2k77 gold badges7575 silver badges107107 bronze badges
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