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App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
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HC05 简单介绍
基本接入代码参考
常见问题解决
Error 515: Not connected to a Bluetooth device.
Error 507: unable to connect. is the device turned on?
乱码问题排查思路
参与讨论
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经典蓝...
How to destroy an object?
...It will stay there, however if you unset the object and your script pushes PHP to the memory limits the objects not needed will be garbage collected. I would go with unset() (as opposed to setting it to null) as it seems to have better performance (not tested but documented on one of the comments fr...
Stack Overflow：StackExchange网络不同主题网站的”祖父“ - 更多技术 - ...
...最早设立的是Stack Overflow，即一个供程序员互相解答编程问题的问答网站，随后我们试图将同样的技术推广到编程之外的领域，比如说烹饪、摄影等等，每个主题的问答站点就都称为StackExchange，合起来也就是StackExchange网络。因...
Fatal error: Class 'SoapClient' not found
... service example and I get this error even though I uncommented extension=php_soap.dll in the php.ini file:
11 Answers
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MySQL: determine which database is selected?
... currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
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Mixing a PHP variable with a string literal
...ake a look to the Variable parsing - Complex (curly) syntax section of the PHP manual.
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Are global variables in PHP considered bad practice? If so, why?
In my small PHP projects I usually go the procedural way. I generally have a variable that contains the system configuration, and when I nead to access this variable in a function, I do global $var; .
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译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。既然它们是一些不知名的概念，我简单就着前面的三个问题来说明一下。
强引用(Strong Reference)
强引用就是我们经常使用的引用，其写法如下
StringBuffer buffer = new StringBuffer();
上面创建了一个StringBuffer对象，并将这个对象的...
windows版 svn 服务器搭建及总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...e –d –r d:/svnserversoftware/myrepository
以下转载若干问题
1、不知道该怎么设置 svn://url 这个路径
2、三个需要设置的文件，其中authz这个里面的[repos:/]这个到底该怎么设置
3、认证失败问题出在哪里？
4、svn import 目录1 "s...
PhpCms v9 Tag url静态化全攻略 兼容\"+\",\"#\"等特殊字符 - 更多技术 - ...
PhpCms v9 Tag url静态化全攻略 兼容"+","#"等特殊字符首先确认我们的需求：http: xxx.com tag 标签来访问：http: xxx.com index.php?m=content&c=tag&a=lists&tag=标签实现url的伪静态化。（p...首先确认我们的需求：http://xxx.com/tag/标签 来访问：http://...