大约有 15,000 项符合查询结果(耗时:0.0169秒) [XML]

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How to exclude a directory in find . command

...since -deletewill first delete the leaves, then the parents of the leaves, etc... But for specifying -prune to make sense, find needs to hit a directory and stop descending it, which clearly makes no sense with -depth or -delete on. Performance I set up a simple test of the three top upvoted ans...
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如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术

...学习算法Choosing-a-Machine-Learning-Classifier如何针对某个分类问题决定使用何种机器学习算法? 当然,如果你真心在乎准确率,最好的途径就是测试一大堆各式各样的算法(同时确保在每个算法上也测试不同的参数),最后选择在交...
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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...时性较差。虽然可以通过加快轮询频率的方式来缓解这个问题,但相应付出的代价也不小:一来会使负载居高不下,二来也会让带宽捉襟见肘。 再来说说Long Polling,如果使用传统的LAMP技术去实现的话,大致如下所示: Long Pol...
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MongoDB: Is it possible to make a case-insensitive query?

...query, which would also match stemmed words of bill, such as Bills, billed etc. – Dan Dascalescu May 13 '19 at 5:32  |  show 5 more comments ...
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App Inventor 2 中文网 · 项目指南

... 帮你拆解实现思路、理解积木逻辑、分析报错。在解决问题的过程中,学会创造。 我想做一个记录灵感的 App,怎么开始? ✦ ...
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关于我们 · App Inventor 2 中文网,少儿编程陪伴者

...一名学生,升级VIP会员后,可以随时随地在线编程,遇到问题提问都能及时得到详细解答,我的App开发技能得到了极大的提升!另外,我享受到VIP学生价格优惠,非常划算! ...
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VideoRecorder 拓展:前台预览录制 + 后台无预览录制,支持分辨率、码率设...

...率对照表(BitRate) Quality 预设值 注意事项 问题解决历程 用户写了长长的感谢信: 拓展下载 « 返回首页 VideoRecorder视频录制拓展 拓展开发起由:有用户询问 千问Max版 说我们有...
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How do I read CSV data into a record array in NumPy?

...sing NumPy and Pandas, using pandas has a lot of advantages: Faster Less CPU usage 1/3 RAM usage compared to NumPy genfromtxt This is my test code: $ for f in test_pandas.py test_numpy_csv.py ; do /usr/bin/time python $f; done 2.94user 0.41system 0:03.05elapsed 109%CPU (0avgtext+0avgdata 50206...
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What is the facade design pattern?

...kipedia has a great example of Facade pattern. /* Complex parts */ class CPU { public void freeze() { ... } public void jump(long position) { ... } public void execute() { ... } } class Memory { public void load(long position, byte[] data) { ... } } class HardDrive { public b...
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微博为什么限制140字(附短信70字限制考) - 创意 - 清泛网 - 专注C/C++及内核技术

微博为什么限制140字(附短信70字限制考)问题的提出申请过那么多的微博,数申请网易微博的动机最不纯,因为它的字数限制不是传说中的140字,而是163个字。当年觉得很可爱,于是就注...问题的提出 申请过那么多的微博,数申...