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Formatting Decimal places in R
I have a number, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that?
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How does collections.defaultdict work?
... understand why.
– Sven Marnach
May 2 '19 at 19:10
How do we know what is the default value for each type? 0 for int()...
Batch files - number of command line arguments
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nimrodmnimrodm
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How can I create a Set of Sets in Python?
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121
Python's complaining because the inner set objects are mutable and thus not hashable. The solut...
How to swap the buffers in 2 windows emacs
I am using emacs I find that sometimes I have 2 files separated into 2 windows.
8 Answers
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PHP case-insensitive in_array function
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102
you can use preg_grep():
$a= array(
'one',
'two',
'three',
'four'
);
print_r( preg_grep( "...
How do I convert dates in a Pandas data frame to a 'date' data type?
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112
Use astype
In [31]: df
Out[31]:
a time
0 1 2013-01-01
1 2 2013-01-02
2 3 2013-...
Pandas every nth row
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207
I'd use iloc, which takes a row/column slice, both based on integer position and following nor...
Linux下部署企业级邮件服务器(postfix + dovecot + extmail) - 开源 & Gith...
...件服务器，公司全部员工使用统一的域名，内网IP为：192.168.0.115
操作系统：RHEL5
所用软件列表：
mysql-5.5.20
postfix-2.9.1
courier-authlib-0.62.4.tar.bz2
extmail-1.2.tar.gz
extman-1.1.tar.gz
Unix-Syslog-1.1.tar.gz
perl-GD-2.35-1.el5.rf.i386.rpm...
Force unmount of NFS-mounted directory [closed]
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254
votes
You might try a lazy unmount:
umount -l
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