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APP INVENTOR硬件交互学习教程04——蓝牙控制继电器 - 创客硬件开发 - 清泛...
这节主要是设计一个APP，连接蓝牙模块，通过按钮控制继电器的打开和关闭。
一、硬件部分
二、板子程序
串口接收字符，并输出控制继电器
// 引脚定义
const int ledPin1 = 5;// the number of the LED pin
const int ledPin2 = &...
MVC (Laravel) where to add logic
...most of the work is done. All at the expense of one extra interface and a $app->bind(«interface», «repository»).
Events (Observer Pattern): Events are useful for things that can be thrown at any class any given time. Think, for instance, of sending notifications to a user.
When you need, y...
Has anyone used Coffeescript for a production application? [closed]
...eScript in our product - a non-public facing website which is basically an app for browsing certain kinds of data.
We use CoffeeScript as a command-line compiler (not on the server, which we'd eventually like to do).
PROS (for us):
It gets rid of a lot of needless clutter in javascript (eg braces...
How to include a Font Awesome icon in React's render()
...
If you are new to React JS and using create-react-app cli command to create the application, then run the following NPM command to include the latest version of font-awesome.
npm install --save font-awesome
import font-awesome to your index.js file. Just add below line to...
How to delete a module in Android Studio
...e this one on youtube: youtube.com/watch?v=lvFCRl_zxsw, instruct to remove app and activity modules first before deleting project folder for a clean project delete.
– Androidcoder
Jun 10 '15 at 13:54
...
App Inventor 2 串口调试 App 全方案技术调研 - App应用开发 - 清泛IT社区，为创新赋能！
App Inventor 2 串口调试 App 全方案技术调研
前言
串口调试器是硬件开发、嵌入式工程中最常用的工具。很多同学问：App Inventor 2 能不能做一个手机版的串口调试器？答案是：不仅能做，而且有多条技术路线可选。本文从源码...
How do I make a splash screen?
I wanted to make my app look more professional, so I decided that I wanted to make a splash screen.
34 Answers
...
Django dynamic model fields
I'm working on a multi-tenanted application in which some users can define their own data fields (via the admin) to collect additional data in forms and report on the data. The latter bit makes JSONField not a great option, so instead I have the following solution:
...
ASP.NET_SessionId + OWIN Cookies do not send to browser
...ite self explanatory. If you ever store something to session state in your application, this module will do a little more work for each request.
Back to our login problem
With all these pieces your scenarios can be explained.
Case 1 - Session was never set
System.Web.SessionState.SessionStateM...
Are there console commands to look at whats in the queue and to clear the queue in Sidekiq?
... methods just for viewing the queued jobs, but they would really just be wrappers around Redis commands, since that's basically all Sidekiq (and Resque) is:
# See workers
Sidekiq::Client.registered_workers
# See queues
Sidekiq::Client.registered_queues
# See all jobs for one queue
Sidekiq.redis {...