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为维护国家安全 中国限制出口无人机和高性能计算机 - 资讯 - 清泛网 - 专注...
...大于等于30分钟小于1小时、能在大于等于46.3千米每小时(25节)阵风条件下起飞和稳定可供飞行的，最大续航时间大于等于1小时的，均在限制范围内。
中国“彩虹4号”中空长航时查打一体无人机
有分析称，从技术角度来看此...
Using multiple delimiters in awk
...ile
Produces:
tc0001 tomcat7.1 demo.example.com
tc0001 tomcat7.2 quest.example.com
tc0001 tomcat7.5 www.example.com
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Is it possible to ping a server from Javascript?
...lements the above, please comment and I'll add it into the answer.
Update 2: @trante was nice enough to provide a jsFiddle.
http://jsfiddle.net/GSSCD/203/
Update 3: @Jonathon created a GitHub repo with the implementation.
https://github.com/jdfreder/pingjs
Update 4: It looks as if this impleme...
Find a pair of elements from an array whose sum equals a given number
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edited Sep 12 at 14:53
hjpotter92
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How to get the separate digits of an int number?
I have numbers like 1100, 1002, 1022 etc. I would like to have the individual digits, for example for the first number 1100 I want to have 1, 1, 0, 0.
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Difference between map, applymap and apply methods in Pandas
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Straight from Wes McKinney's Python for Data Analysis book, pg. 132 (I highly recommended this book):
Another frequent operation is applying a function on 1D arrays to each column or row. DataFrame’s apply method does exactly this:
In [116]: frame = DataFrame(np.random.randn(4, 3), ...
JavaScript equivalent to printf/String.Format
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python max function using 'key' and lambda expression
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lambda is an anonymous function, it is equivalent to:
def func(p):
return p.totalScore ...