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When to use AtomicReference in Java?

...system call, and your thread will block and be context switched out of the CPU to make way for other processes. The other option is to use an AtomicRefrence. public static AtomicReference<String> shared = new AtomicReference<>(); String init="Inital Value"; shared.set(init); //now we w...
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PHP substring extraction. Get the string before the first '/' or the whole string

... This should be the excepted answer. Definitely faster and more memory and CPU cycles efficient then any of the explode solutions given. – Shivam Maheshwari Jul 6 '16 at 20:04 ...
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MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术

...} 25. 在添加item后,再InsertColumn()后导致整列数据移动的问题 Q151897: CListCtrl::InsertColumn() Causes Column Data to Shift http://support.microsoft.com/kb/151897/en-us 26. 关于listctrl第一列始终居左的问题 解决办法:把第一列当一个虚列,从第...
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Scala framework for a Rest API Server? [closed]

...for several reasons: speed, no overhead, less CPU, less code, scalability, etc. I didn't know Scala until several days ago but I've been enjoying what I've been learning these days with the Scala book and all the blog posts and questions (it's not so ugly!) ...
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Is there any free OCR library for Android? [closed]

... OCR can be pretty CPU intensive, you might want to reconsider doing it on a smart phone. That aside, to my knowledge the popular OCR libraries are Aspire and Tesseract. Neither are straight up Java, so you're not going to get a drop-in Andro...
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How to get start and end of day in Javascript?

... different intervals (hour: 1000 * 60 * 60, 12 hours: 1000 * 60 * 60 * 12, etc.) const interval = 1000 * 60 * 60 * 24; // 24 hours in milliseconds let startOfDay = Math.floor(Date.now() / interval) * interval; let endOfDay = startOfDay + interval - 1; // 23:59:59:9999 ...
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When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?

... In todays world, Data Execution Prevention doesn't even allow the CPU to fetch an instruction from the heap. This answer is outdated since XP SP2. – MSalters Apr 5 '17 at 8:27 2 ...
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基于PECL OAuth打造微博应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...rOAuth改的,一旦多平台集成,很容易出现命名冲突之类的问题。 既然官方SDK不给力,那我们只能发扬自力更生的革命精神了!好消息是PHP本身已经有了一个标准的OAuth实现:PECL OAuth!下面以此为例来讲解一下: 说明:首先需...
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ZeroMQ的学习和研究(PHP代码实例) - C/C++ - 清泛网 - 专注C/C++及内核技术

...订阅者,必然会丢失掉一部分信息,这是这个模式的一个问题,所谓的 Slow joiner。稍后,会解决这个问题。 d) 但是,如果 Publisher 中途离开,所有的 Subscriber 会 hold 住,等待 Publisher 再上线的时候,会继续接受信息。 ZMQ 的 PipeL...
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How to import data from mongodb to pandas?

...database or even use find_one() to get only one element from the database, etc. and voila! share | improve this answer | follow | ...