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APP INVENTOR硬件交互学习教程03——巧借arduino nano 配置HC-05 - 创客硬...
...1
2.arduino nano波特率转换程序,它实现波特率的转换,下载程序到板子。
#include <SoftwareSerial.h>
SoftwareSerial EEBlue(12, 10); // RX | TX
void setup() {
// initialize both serial ports:
Serial.begin(9600);
EEBlue.begin(3...
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...
2026 新年第一篇:即将全面支持苹果iOS App编译生成,纯血鸿蒙计划中,编译...
...开发者 ewpatton 指出,Apple App Store 审核指南明确禁止动态下载或执行未经审核的代码(如 Android 扩展的动态载入行为)。这是扩展无法在 companion 或运行环境中工作的政策根本限制。MIT App Inventor Community+1
三、官方对 iOS 扩展的可...
What does “pending” mean for request in Chrome Developer Window?
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I had some problems with pending request for mp3 files.
I had a list of mp3 files and one player to play them. If I picked a file that had already been downloaded, Chrome would block the request and show "pending request" in the network tab of the developer tools.
All ...
Media Player called in state 0, error (-38,0)
..._main);
final MediaPlayer mpp = MediaPlayer.create(this, R.raw.red); //mp3 file in res/raw folder
Button btnplay = (Button) findViewById(R.id.btnplay); //Play
btnplay.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View vone) {
mpp.start...
比起创业孵化器 双创中国更急需的是创业教育 - 资讯 - 清泛网 - 专注C/C++...
...自己的心得体会,探讨创业路上的具体问题。这种分享是免费和开放的。诸多的谷创业明星都曾来到这个平台进行分享,影响了一批又一批的创业者。
而在中国,这种创业分享形式却被现实原因所阻碍。最为突出的表现,是中...
Wait for a process to finish
... Caution: This does not always work, as pointed out below by mp3foley. See that comment and mine for the details.
– teika kazura
Jun 15 '13 at 7:39
2
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来自微软的一手内幕:Windows 10是怎么出炉的 - 创意 - 清泛网 - 专注C/C++及内核技术
...有一次,因为Windows发言人的口误,让大家以为Windows 10会免费。然后,“有个在班格拉斯的小子,不知道从哪搞到了我的邮箱,他用的是盗版的Windows系统。”Myerson说道。“我们聊得很投机。于我而言,我取了不少经,我知道了...
了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术
...用的 C++ 接口,用于执行文件系统操作。可以从 Boost 站点免费下载此库。
使用 boost::filesystem 的第一个程序
在深入研究 Boost Filesystem Library 的更多细节之前,请看一下清单 1 中所示的代码;此代码使用 Boost API 确定某个文件的类...
Using .NET, how can you find the mime type of a file based on the file signature not the extension
...me"},
{"movie", "video/x-sgi-movie"},
{"mp2", "audio/mpeg"},
{"mp3", "audio/mpeg"},
{"mp4", "video/mp4"},
{"mpe", "video/mpeg"},
{"mpeg", "video/mpeg"},
{"mpg", "video/mpeg"},
{"mpga", "audio/mpeg"},
{"ms", "application/x-troff-ms"},
{"msh", "model/mesh"},
...
