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How to use double or single brackets, parentheses, curly braces
...me for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)); do [ "$i" = 1000 ]; done
real 0m33.478s
user 0m33.478s
sys 0m0.000s
The braces, in addition to delimiting a variable name are used for par...
Simple state machine example in C#?
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425
Let's start with this simple state diagram:
We have:
4 states (Inactive, Active, Paused, ...
Factors in R: more than an annoyance?
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49
You should use factors. Yes they can be a pain, but my theory is that 90% of why they're a pain...
Keyboard Interrupts with python's multiprocessing Pool
...timeout. To do that, replace
results = pool.map(slowly_square, range(40))
with
results = pool.map_async(slowly_square, range(40)).get(9999999)
or similar.
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How to get the error message from the error code returned by GetLastError()?
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149
//Returns the last Win32 error, in string format. Returns an empty string if there is no error....
Can't start Eclipse - Java was started but returned exit code=13
...ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago.
44 Answers
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重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...要来用用看？）
ServerCenter模块是基于互娱研发部的tsf4j框架开发的，简单地说，这是压测后台的消息中转主模块，把不同的消息转发到不同的下游模块。实现层面上，该程序主逻辑就是个消息处理函数，思想非常简单，是典...
Oracle “Partition By” Keyword
... 10 3 <- three because there are three "dept_no = 10" records
4 20 2
5 20 2 <- two because there are two "dept_no = 20" records
If there was another column (e.g., state) then you could count how many departments in that State.
It is like getting the results...
Is Java “pass-by-reference” or “pass-by-value”?
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6014
+150
Java is ...
How can I make Sublime Text the default editor for Git?
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344
Windows
Sublime Text 2 (Build 2181)
The latest Build 2181 just added support for the -w (wait...