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Groovy: what's the purpose of “def” in “def x = 0”?
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Ben HoffsteinBen Hoffstein
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add...
In Git, how can I write the current commit hash to a file in the same commit
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84
I would recommend doing something similar to what you have in mind: placing the SHA1 in an untr...
Nested fragments disappear during transition animation
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useruser
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Why does volatile exist?
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Some processors have floating point registers that have more than 64 bits of precision (eg. 32-bit x86 without SSE, see Peter's comment). That way, if you run several operations on double-precision numbers, you actually get a higher-precision answer than if you were to truncate each interm...
Secondary axis with twinx(): how to add to legend?
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84
From matplotlib version 2.1 onwards, you may use a figure legend. Instead of ax.legend(), which...
How to check that an element is in a std::set?
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std::set is typically implemented with an ordered tree structure, so count() and find() will both have O(logn). Neither will iterate over ...
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:?
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// Delay 2 seconds
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(2.0 * Double(NSEC_PER_SEC))), dispatch_get_main_queue()) { () -> Void in
println("Sum of times: \(time1 + time2)")
}
Objective C
CGFloat time1 = 3.49;
CGFloat time2 = 8.13;
// Delay 2 seconds
dispatch_after(...
Get unique values from a list in python [duplicate]
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96
A Python list:
>>> a = ['a', 'b', 'c', 'd', 'b']
To get unique items, just transfor...
Check if two linked lists merge. If so, where?
...t implementations usually provide for length
– keshav84
Sep 4 '10 at 8:28
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CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...：CentOS release 6.4 (Final)
Squid版本：squid-3.1.10-20.el6_5.3.x86_64
SELINUX=disabled
HTTP Service: stoped
三、安装Squid服务
3.1 检查squid软件是否安装
# rpm -qa|grep squid
3.2 如果未安装，则使用yum 方式安装
# yum -y install squid
3.3 设置开机自启动
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