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Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...的效率。 代码性能优化建议 原文: http://developer.android.com/training/articles/perf-tips.html 原翻译地址:http://hukai.me/android-training-course-in-chinese/performance/performance-tips.html 通常来说,高效的代码需要满足下面两个规则: 不要做冗余的...
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What does the git index contain EXACTLY?

What does the Git index exactly contain, and what command can I use to view the content of the index? 5 Answers ...
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postgresql port confusion 5433 or 5432?

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Remove leading or trailing spaces in an entire column of data

How do I remove leading or trailing spaces of all cells in an entire column? 6 Answers ...
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python generator “send” function purpose?

Can someone give me an example of why the "send" function associated with Python generator function exists? I fully understand the yield function. However, the send function is confusing to me. The documentation on this method is convoluted: ...
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How to deal with SettingWithCopyWarning in Pandas?

I just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this: ...
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List comprehension: Returning two (or more) items for each item

Is it possible to return 2 (or more) items for each item in a list comprehension? 6 Answers ...
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What is size_t in C?

I am getting confused with size_t in C. I know that it is returned by the sizeof operator. But what exactly is it? Is it a data type? ...
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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...建一个队列,代码如下: <?php $redis = new Redis; $redis->connect('/tmp/redis.sock'); $redis->lPush('usr', <USRID>); while ($usr = $redis->rPop('usr')) { var_dump($usr); } ?> 出于类似的原因,我们还需要一个队列来保存待处理的消息。当然也...
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Kotlin secondary constructor

How do I declare a secondary constructor in Kotlin? 12 Answers 12 ...