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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区,为创新赋能!

广播和扫描在无线通信中是非常重要的一个技术点。在BLE中,扫描和广播是通信的基础,用户可以直接用扫描和广播进行数据的传输(数据量不大,功耗要求较高的情况下),也可以在广播和扫描的基础上进行连接后点对点通信...
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CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛,有思想、有深度

本帖最后由 zqp2013 于 2015-4-26 14:29 编辑 一、安装MySQL         目前web服务器已经很少有跑静态页面的,如果要跑动态网站那当然就离不开数据库,虽然在以前文章中有写MySQL是怎么安装的,但是感觉好久没...
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Is there more to an interface than having the correct methods

... 123 What makes interfaces useful is not the fact that "you can change your mind and use a differen...
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App Inventor 2开发计步器与定位器 - App Inventor 2 中文网 - 清泛IT论坛,有思想、有深度

来源:http://www.zsqz.com/chuangke/10r.htm 【学习目标】   1.掌握App Inventor中对调用手机计步器、位置传感器等硬件传感器的应用;   2.了解数据持久化,掌握数据存储等功能的实现;   3.通过编程实践,感受和体验利用手机...
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Where does Java's String constant pool live, the heap or the stack?

...mple, if you init the following objects: String s1 = "abc"; String s2 = "123"; String obj1 = new String("abc"); String obj2 = new String("def"); String obj3 = new String("456); String literals s1 and s2 will go to string constant pool, objects obj1, obj2, obj3 to the heap. All of them, will be r...
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Fastest Way to Serve a File Using PHP

... @Keyne I don't think you can. tn123.org/mod_xsendfile does not list .htaccess in the context for the XSendFilePath option – cheshirekow May 30 '12 at 20:49 ...
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Paging in a Rest Collection

... example.com/cool.ajax" vs "cool article here: example.com/article.ajax#id=123". – Richard Levasseur Jun 4 '09 at 5:49 2 ...
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How can you integrate a custom file browser/uploader with CKEditor?

...; /* thumbnails per row */ $thumIndicator = '_th'; /* e.g., *image123_th.jpg*) -> if not using thumbNails then use empty string */ ?> <!DOCTYPE html> <html> <head> <title>browse file</title> <meta charset="utf-8"> <styl...
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JAVA线程池管理及分布式HADOOP调度框架搭建 - 人工智能(AI) - 清泛IT社区,...

平时的开发中线程是个少不了的东西,比如tomcat里的servlet就是线程,没有线程我们如何提供多用户访问呢?不过很多刚开始接触线程的开发攻城师却在这个上面吃了不少苦头。怎么做一套简便的线程开发模式框架让大家从单线...
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Accessing an SQLite Database in Swift

... Id = ?") != .Ok ) { /* handle error */ } statement.bindInt(1, value: 123); if ( statement.step() == .Row ) { /* do something with statement */ var id:Int = statement.getIntAt(0) var stringValue:String? = statement.getStringAt(1) var boolValue:Bool = statement.getBoolAt(2) ...