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How many bytes does one Unicode character take?
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edited Oct 12 '16 at 18:07
Kasravnd
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Pass column name in data.table using variable [duplicate]
...list(x, v))
DT[ , eval(temp)]
# x v
# 1: b 1.52566586
# 2: b 0.66057253
# 3: b -1.29654641
# 4: a -1.71998260
# 5: a 0.03159933
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jumpserver-华为云免费堡垒机解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...irrors.163.com/centos/6.7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm
wget http://mirrors.163.com/centos/6.7/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
3.进行安装yum
rpm -ivh python*
rpm -ivh yum*
注意最后两个包必需同时安装，否...
PHP validation/regex for URL
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nhahtdh
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answered Oct 15 '08 at 19:30
OwenOwen
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CSS opacity only to background color, not the text on it? [duplicate]
...;integer>s or <percentage>s, where the number 255 corresponds to 100%. A (alpha) can be a <number> between 0 and 1, or a <percentage>, where the number 1 corresponds to 100% (full opacity).
RGBa example
rgba(51, 170, 51, .1) /* 10% opaque green */
rgba(51, 170, 51, .4) /...
How to remove leading and trailing whitespace in a MySQL field?
..., newline, etc)
– TM.
Jan 9 '14 at 20:50
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yes you're right @TM so it's better to use: UPDATE FO...
Showing Difference between two datetime values in hours
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120
I think you're confused because you haven't declared a TimeSpan you've declared a TimeSpan? whic...
How to pattern match using regular expression in Scala?
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edited Aug 10 '15 at 16:11
r0estir0bbe
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Checking if a variable is not nil and not zero in ruby
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unless discount.nil? || discount == 0
# ...
end
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Iterating each character in a string using Python
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edited Nov 2 '18 at 17:10
vallentin
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answered F...