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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛,有思想、有深度

...同时也拓宽了低功耗蓝牙的应用领域。例如,可以自定义一个开关量的Profile,数据01表示开灯,数据00表示关灯,然后手机发送数据01和00就可以控制灯的亮和灭。类似的应用案例有很多,下面总结应用特点支持自定义Profile,可...
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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...制资源的使用来改善系统性能。 概述 系统性能一直是一个受关注的话题,如何通过最简单的设置来实现最有效的性能调优,如何在有限资源的条件下保证程序的运作,ulimit 是我们在处理这些问题时,经常使用的一种简单手...
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Using os.walk() to recursively traverse directories in Python

... This will give you the desired result #!/usr/bin/python import os # traverse root directory, and list directories as dirs and files as files for root, dirs, files in os.walk("."): path = root.split(os.sep) print((len(path) - 1) * '---', os.path.basename(root)) for file in fi...
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How do you get a directory listing sorted by creation date in python?

...pdate: to sort dirpath's entries by modification date in Python 3: import os from pathlib import Path paths = sorted(Path(dirpath).iterdir(), key=os.path.getmtime) (put @Pygirl's answer here for greater visibility) If you already have a list of filenames files, then to sort it inplace by creati...
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How do I programmatically determine operating system in Java?

I would like to determine the operating system of the host that my Java program is running programmatically (for example: I would like to be able to load different properties based on whether I am on a Windows or Unix platform). What is the safest way to do this with 100% reliability? ...
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Java 理论与实践: 线程池与工作队列 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...很短而请求的数目却是巨大的。 构建服务器应用程序的一个过于简单的模型应该是:每当一个请求到达就创建一个新线程,然后在新线程中为请求服务。实际上,对于原型开发这种方法工作得很好,但如果试图部署以这种方式...
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PHP中9大缓存技术总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...件***** Ob_end_clean(); 2、页面部分缓存 该种方式,是将一个页面中不经常变的部分进行静态缓存,而经常变化的块不缓存,最后组装在一起显示;可以使用类似于ob_get_contents的方式实现,也可以利用类似ESI之类的页面片段缓存...
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How to find the operating system version using JavaScript?

How can I find the OS name and OS version using JavaScript? 13 Answers 13 ...
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技术人员如何创业《三》- 合伙人的分工 - 资讯 - 清泛网 - 专注C/C++及内核技术

...业的时候怎么去分工。 记得公司刚开始成立时,团队有一个技术型boss、一个行政、两三个技术。这个时候主要是为了一个ideal、满腔热血就开始开发。分工是这样的,boss指导方向、行政打点生活和后勤、技术作为先锋开发软件...
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`from … import` vs `import .` [duplicate]

...urself when you import for simplicity or to avoid masking built ins: from os import open as open_ # lets you use os.open without destroying the # built in open() which returns file handles. share | ...