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Performance of foreach, array_map with lambda and array_map with static function
... 1 RECV 1
11 2 EXT_STMT
3 INIT_ARRAY ~0
4 ASSIGN !1, ~0...
include external .js file in node.js app
...obal variable. If you want a global variable then write global.foo. but we all know globals are evil.
If you are someone who uses globals like that in a node.js project I was on I would refactor them away for as there are just so few use cases for this (There are a few exceptions but this isn't one...
Is there a way to detect if an image is blurry?
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Unless your image is cyclic, you will usually have sharp edges at the borders of the image that lead to very high frequencies
– Niki
Oct 14 '11 at 11:04
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List comprehension: Returning two (or more) items for each item
...7094
3.13900787874
1.62461071932
25.5944058287
29.2623711793
25.7211849286
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How big can a MySQL database get before performance starts to degrade
...us first on your indexes, then have a server admin look at your OS, and if all that doesn't help it might be time to implement a master/slave configuration.
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Using isKindOfClass with Swift
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Another approach using the new Swift 2 syntax is to use guard and nest it all in one conditional.
guard let touch = object.AnyObject() as? UITouch, let picker = touch.view as? UIPickerView else {
return //Do Nothing
}
//Do something with picker
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adding noise to a signal in python
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answered Oct 3 '14 at 15:11
Noel EvansNoel Evans
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OceanBase使用libeasy原理源码分析:服务器端 - 数据库(内核) - 清泛网 - ...
...nection_t(TCP连接)的输出缓冲区链表中
handler_.encode = ObMySQLCallback::encode;
// libeasy回调这个函数用于从该连接的输入缓冲区中反序列化出一个符合MySQL协议的包,然后吐给上层使用
handler_.decode = ObMySQLCallback::decode;
// 对于每个decode...
Xcode duplicate/delete line
Coming from Eclipse and having been used to duplicate lines all the time, it's pretty strange finding out that Xcode has no such function. Or does it?
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Start may not be called on a promise-style task. exception is coming
...s already started the task before giving it to you. You should only ever call Start on a task that you create by calling its constructor, and you shouldn't even do that unless you have a compelling reason to not start the task when you create it; if you want it started right away you should use Tas...