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undefined reference to boost::system::system_category() when compiling
... answered Mar 15 '12 at 16:32
hc_hc_
2,49811 gold badge1414 silver badges1919 bronze badges
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What to gitignore from the .idea folder?
...id Studio and Webstorm
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
# User-specific stuff:
.idea/workspace.xml
.idea/tasks.xml
.idea/dictionaries
.idea/vcs.xml
.idea/jsLibraryMappings.xml
# Sensitive or high-churn files:
.idea/dataSources.ids
.idea/dataSources.xm...
文本框输入十六进制，按字节通过蓝牙发送 · App Inventor 2 中文网
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用列表选择器选配对过的设备并连接（经典蓝牙模块如 HC-05 要先在手机系统设置里配对）：
when 列表选择器1.BeforePicking() {
列表选择器1.Elements = 蓝牙客户端1.AddressesAndNames
}
when 列表选择器1.AfterPicking() {
if (蓝牙客户端1.Conne...
Change text color based on brightness of the covered background area?
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In es6 you can do this with: const getContrastYIQ = hc => { const [r, g, b] = [0, 2, 4].map( p => parseInt( hc.substr( p, 2 ), 16 ) ); return ((r * 299) + (g * 587) + (b * 114)) / 1000 >= 128; }
– Centril
Aug 22 '15 at 16:55
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大家在搜什么：搜索需求成品专题（附 .aia 源码，持续更新） · App Inventor 2 中文网
... 3300 9005 用法与源码 .aia
蓝牙台灯遥控
HC-05 经典蓝牙控制台灯：开关、无级调光、三档预设、定时关灯，附单片机程序。搜索：蓝牙控制升压台灯、hc05 app 设计 用法与源码 .aia
串口调试助手
U...
Hidden features of Windows batch files
...m32\ntbackup.exe ^
backup ^
/V:yes ^
/R:no ^
/RS:no ^
/HC:off ^
/M normal ^
/L:s ^
@daily.bks ^
/F daily.bkf
share
edited Aug 7 '10 at 18:...
Sending images using Http Post
...this without MultipartEntity? I REALLY don't want to import all of Apache HC just for those 4 classes. :-(
– Neil Traft
Aug 1 '10 at 15:53
6
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二进制数据专题：蓝牙、Socket、WebSocket、MQTT 收发字节 · App Inventor 2 中文网
...。所有组合的中枢
蓝牙客户端（经典蓝牙，HC-05/HC-06）
发送字节数组(列表)
可接收字节数 + 接收无符号字节数组(个数)
不会主动通知，用计时器定时查有没有数据
低功耗蓝牙（BLE，ESP32/nRF...
BLE 低功耗蓝牙调试助手：扫描、连接、读写、订阅通知（附 .aia 源码） · ...
...数 BLE 设备会停止广播，先断开那边；③ 这是经典蓝牙（HC-05/HC-06），BLE 扫不到，用蓝牙台灯遥控那种蓝牙客户端。
BluetoothLE 总是获取空列表
DeviceList 只在扫描期间逐步填充，刚点完扫描立刻读是空的。要在 Dev...
How to add Options Menu to Fragment in Android
...wered Aug 19 '13 at 16:52
Marco HCMarco HC
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