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How do you find the sum of all the numbers in an array in Java?
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271
In java-8 you can use streams:
int[] a = {10,20,30,40,50};
int sum = IntStream.of(a).sum();
Sys...
正则表达式 30 分钟入门教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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正则表达式30分钟入门教程
版本：v2.31 (2009-4-11) 作者：deerchao 转载请注明来源
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String.Join method that ignores empty strings?
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174
VB.NET
String.Join(",", myArray.Where(Function(s) Not String.IsNullOrEmpty(s)))
C#
String.J...
The Ruby %r{ } expression
...t
\s # white space char
(group) # first group
(?:alt1|alt2) # some alternation
end
}x
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How to get visitor's location (i.e. country) using geolocation? [duplicate]
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edited May 18 at 15:28
Laurent
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Which commit has this blob?
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107
Both of the following scripts take the blob’s SHA1 as the first argument, and after it, opti...
Why is not in HTML 5 Tag list while is?
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194
Remember, the tags are meant to be semantic, not presentational. There is such a thing in Engl...
Insert a line break in mailto body
...A. Nothing worked for me.
I tested on Gmail, Yahoo, Apple Mail, Outlook 2010, Outlook.com and Thunderbird with Google Chrome on Mac OSX.
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How do you truncate all tables in a database using TSQL?
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How does the HyperLogLog algorithm work?
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156
The main trick behind this algorithm is that if you, observing a stream of random integers, se...