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【未发布】AI2 UDP Extension 拓展研究 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
http://ullisroboterseite.de/android-AI2-UDP.html
【解决】undefined reference to \'apr_thread_rwlock_destory\'、undefine...
【解决】undefined reference to 'apr_thread_rwlock_destory'、undefined reference to 'apr_initialize'undefined_reference_apr1、首选确认安装了apr及apr-util否则报错<apr-1 apr_xxx h>头文件找不到。2、-lapr-1 -laprutil-1添加库链接,否则报错:undefined reference to & 39...
UrsAI2ByteArray 字节数组扩展:读写二进制数据 - App Inventor 2 拓展 - ...
在技术应用或控制设备时,经常需要使用二进制数据。此扩展允许维护二进制数据字段(字节数组)。
官方页面:https://ullisroboterseite.de/android-AI2-ByteArray-en.html
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
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最新版拓展下载:
de.ullisroboterseite.ursai2pahomqtt.aix
MQTT(Message Queuing Telemetry Transport:消息队列遥测传输)
MQTT 发明于 1999 年,为物联网设计的轻量级协议,基于TCP协议实现。
MQTT协议文...
WakeLock 拓展:保持App活动状态,不自动关屏 - App Inventor 2 拓展 - 清...
AI2 WakeLock Extension: Always stay active
来源:https://ullisroboterseite.de/android-AI2-WakeLock-en.html
ActionBar 拓展:溢出菜单 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
...菜单项,并执行对应逻辑。
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https://ullisroboterseite.de/android-AI2-ActionBar-en.html
How to loop through a directory recursively to delete files with certain extensions
... One should always use find ... -print0 | xargs -0 ..., not raw find | xargs to avoid problems with filenames containing newlines.
– Grumbel
Oct 22 '11 at 15:51
7
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How to make a new List in Java
...= new ArrayList<String>();
And follow best practices...
Don't use raw types
Since Java 5, generics have been a part of the language - you should use them:
List<String> list = new ArrayList<>(); // Good, List of String
List list = new ArrayList(); // Bad, don't do that!
Prog...
Streaming video from Android camera to server
...droid phone to IP camera:
http://code.google.com/p/ipcamera-for-android
Raw video data is fetched from LocalSocket, and the MDAT MOOV of MP4 was checked first before streaming. The live video is packed in FLV format, and can be played via Flash video player with a build in web server :)
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Linux下安装项目管理工具Redmine - 开源 & Github - 清泛网 - 专注C/C++及内核技术
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# /usr/local/mysql/bin/mysql -u root -p
Mysql> create database redmine default character set utf8;
grant all on redmine.* to root;
grant all on redmine.* to root@localhost;
grant all on redmine.* to redmineuser;
grant all on redmine.* to redmineuser @localhost;
set password for redmine...
