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Timer & TimerTask versus Thread + sleep in Java
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edited Oct 4 '13 at 19:15
shreyas
69088 silver badges1010 bronze badges
answered Sep 21 '09 a...
Count, size, length…too many choices in Ruby?
... an element or predicate and count only those items that match.
> [1,2,3].count{|x| x > 2 }
=> 1
In the case where you don't provide a parameter to count it has basically the same effect as calling length. There can be a performance difference though.
We can see from the source code f...
Use of ~ (tilde) in R programming Language
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edited Nov 3 '17 at 13:10
SnowFrog
1,11222 gold badges1717 silver badges3737 bronze badges
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Erratic hole type resolution
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answered Jan 2 '18 at 23:21
BillykartBillykart
1911 bronze badge
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Signal handling with multiple threads in Linux
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35
This is slightly nuanced, based on which version of the Linux kernel you are using.
Assuming 2...
What is the difference between `after_create` and `after_save` and when to use which?
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3 Answers
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Active
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C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...s("../Department)
objNode = objNode.SelectNode("Employees/Employee")
2.3 查询已知元素名的节点（集）
在使用不规则的层次文档时，由于不知道中间层次的元素名，可使用//符号来越过中间的节点，查询其子，孙或多层次下的其他所有元素。...
C# Xml中SelectSingleNode方法中的xpath用法（Xml节点操作最佳方式） - 更...
...s("../Department)
objNode = objNode.SelectNode("Employees/Employee")
2.3 查询已知元素名的节点（集）
在使用不规则的层次文档时，由于不知道中间层次的元素名，可使用//符号来越过中间的节点，查询其子，孙或多层次下的其他所有元素。...