大约有 30,000 项符合查询结果（耗时：0.0429秒） [XML]
BLE 蓝牙模块添加延时控制开关 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
BLE 蓝牙模块如何添加延时控制开关，例如，在APP上点击一下，控制延时 10分钟、20分钟、1小时等多个选着时间控制程序开关灯，请指点，谢谢使用计时器组件，设置计时间隔，事件中给硬件发指令
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硬件交互学习教程06——硬件参数上报 - 创客硬件开发 - 清泛IT...
...组件
增加两个标签，一个布局，一个文本输入框
2.程序逻辑
增加接收处理和显示判断
3.arduino nano代码
// 引脚定义
const int ledPin1 = 5;// the number of the LED pin
const int ledPin2 = 6;
const int ledPin3 = 3;
const...
APP INVENTOR硬件交互学习教程08——增加语音播报 - 创客硬件开发 - 清泛IT...
这一节介绍增加语音播报功能，需要增加一个复选框和一个文本朗读器组件。
1.界面设计
2.程序设计
断电模式可以保存，复选框配置模式
What exactly do “u” and “r” string flags do, and what are raw string literals?
...h of them -- that's all. It also gained some popularity to express native Windows file paths (with backslashes instead of regular slashes like on other platforms), but that's very rarely needed (since normal slashes mostly work fine on Windows too) and imperfect (due to the "except" clause above).
...
Determine which MySQL configuration file is being used
...-help | grep -A 1 "Default options"
Default options are read from the following files in the given order:
/etc/mysql/my.cnf ~/.my.cnf /usr/etc/my.cnf
share
|
improve this answer
|
...
What's the name for hyphen-separated case?
...hat said, as of 2019, there is a strong case to be made that kebab-case is winning:
https://trends.google.com/trends/explore?date=all&q=kebab-case,spinal-case,lisp-case,dash-case,caterpillar-case
spinal-case is a distant second, and no other terms have any traction at all.
Additionally, kebab...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
... __func__ is implicitly declared by the translator as if, immediately following the opening brace of each function definition, the declaration
static const char __func__[] = "function-name";
appeared, where function-name is the name of the lexically-enclosing function. This name is the unadorned n...
How are the points in CSS specificity calculated
... = 0100h = 256 0,0,15,0 = 00f0h = 240 256 > 240 so the id selector wins.
– Matthew Wilson
May 11 '10 at 9:08
...
How does the Java 'for each' loop work?
...element of the `fruits` array.
}
So, overall summary:
[nsayer] The following is the longer form of what is happening:
for(Iterator<String> i = someList.iterator(); i.hasNext(); ) {
String item = i.next();
System.out.println(item);
}
Note that if you need to use
i.remove(); in ...