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BLE(二)信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区,...

...,如电池、心率、血压等,可参照官方Profiles Overview,对分析并无大用。 Service和Characteristic则是比较重要的,Service可以理解为PHP中的“类”、功能对象的集合。Characteristic可以理解为PHP的“函数”,是GATT中具体的功能对象,每...
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App Inventor 2 上传文件和图片到服务器教程 · App Inventor 2 中文网

...PostFile 直接上传 原理 组件准备 积木块代码 1. 拍照后上传 2. 从相册选择图片后上传 3. 处理上传结果 方案二:Base64 编码上传 原理 组件准备 积木...
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...到程序所在目录。运行“ objdump -x cm2 ”,显示如下: 代码: [ncc2008@localhost]$ objdump -x cm2 cm2: file format elf32-i386 cm2 architecture: i386, flags 0x00000102: EXEC_P, D_PAGED start address 0x08048080 程序头: LOAD off 0x00000000 vaddr 0x08048...
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When should I use File.separator and when File.pathSeparator?

... You use separator when you are building a file path. So in unix the separator is /. So if you wanted to build the unix path /var/temp you would do it like this: String path = File.separator + "var"+ File.separator + "temp" You use the pathSeparator when you are dealing with a lis...
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Listing only directories in UNIX

... With which flavour of Unix do you get tree? – Johnsyweb Sep 8 '10 at 12:12 ...
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App Inventor 2 颜色代码块 · App Inventor 2 中文网

... App Inventor 2 颜色代码块 App Inventor 中的颜色如何发挥作用? 基本颜色 合成颜色 分解颜色 颜色工具 十六进制转颜色 颜色转十六进制 ...
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我的钢琴 · App Inventor 2 中文网

...主要练习按钮属性设置、组件重命名,以及用过程把重复代码收拢起来。 ★ 难度 动手完成 项目教程跟着步骤完成作品 ...
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IPC performance: Named Pipe vs Socket

...863.296 us Standard deviation: 44.905 us Message rate: 22483 msg/s Unix domain sockets benchmark: Message size: 128 Message count: 1000000 Total duration: 24579.846 ms Average duration: 24.531 us Minimum duration: 2.560 us Maximum duration: 15932.928 us Standard deviati...
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How to run Unix shell script from Java code?

It is quite simple to run a Unix command from Java. 17 Answers 17 ...
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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?

How do you convert a Unix timestamp (seconds since epoch) to Ruby DateTime? 6 Answers ...