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App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...拨打或接听电话等，也无法模拟蓝牙通信（需要测试SPP/BLE蓝牙通信的请使用安卓真机）。
Q：AI伴侣扫码测试时手机和电脑必须在同一局域网内吗？
A：旧的兼容模式的测试原理是电脑端启动Web服务供手机连接，两者必须在同...
AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
...bsp; return data;
2、字节列表，来自MIT原版ble拓展中的处理方式：
@SimpleFunction
public void WriteBytes(String serviceUuid, String characteristicUuid, boolean signed,
&nb...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...型】PosenetExtension 拓展：人体姿势识别
【AI模型】TeachableMachine 拓展：使用设备摄像头训练视觉模型
【AI模型】FaceMeshExtension 拓展：人脸标记识别
【AI模型】LookExtension 拓展：使用编译到扩展中的神经网络进行物品识别
...
浅析为什么char类型的范围是 -128~+127 - C/C++ - 清泛网 - 专注C/C++及内核技术
...负数的反码是原码除了符号位，其余为都取反，因此-1 的源码为 1 0000001 ，反码为 1 1111110, 现在再用反码来计算 1+(-1)
0000 0001
+ 1111 1110
————————
1111 1111 …………再转化为原码就是 1000 0000 = -0 ，虽然...
Delete all records in a table of MYSQL in phpMyAdmin
I use wampserver 2.2. When I want to delete all records of a table in phpMyAdmin (select all) it deletes only one record not all records. Why it does not delete all records?
...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
... 7libunwind：记录程序崩溃堆栈 8TLSF源码及算法介绍 9Linux下部署企业级邮件服务器(postfix + ... 10libunwind链接时报错：undefined referenc... 本月排行 ...
IOException: read failed, socket might closed - Bluetooth on Android 4.3
... It doesn't work on nexus 4. can you please tell how to overcome this problem. I have almost tried everything. Thanks.
– Shah
Feb 27 '15 at 19:45
3
...
How to check for an active Internet connection on iOS or macOS?
...y via closures
let reachability = Reachability()!
reachability.whenReachable = { reachability in
if reachability.connection == .wifi {
print("Reachable via WiFi")
} else {
print("Reachable via Cellular")
}
}
reachability.whenUnreachable = { _ in
print("Not reachabl...
MFC的多国语言界面的实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...http://www.cnblogs.com/xianyunhe/archive/2011/09/02/2163842.html
8. Demo源码下载：MFC的多国语言界面的实现Demo.zip
9. 想了解内部实现原理的请参考：《基于MFC的中英文图形界面的实现》。MFC 多国语言 界面
Understanding ibeacon distancing
... basic concept of how distancing with ibeacon (beacon/ Bluetooth-lowenergy/BLE) can work. Is there any true documentation on how far exactly an ibeacon can measure. Lets say I am 300 feet away...is it possible for an ibeacon to detect this?
...