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App Inventor 2 物联网入门的两个方向：BLE直连硬件 vs MQTT云端通信，你的...
...| 天然支持海量设备
• 实现复杂度 | 中等（需处理UUID、Service） | 中等（需MQTT服务器、Topic管理）
• App Inventor支持 | BlueToothLE拓展（内置） | UrsPahoMqttClient拓展（第三方）
详细对比
场景1：智能家居单品控制
假设你想用...
Replacement for Google Code Search? [closed]
...bolHound (generic search engine, not just code)
Codase (only C, C++, Java; service unavailable as of 2016-08-23)
Codefetch (unreachable as of 2016-08-23)
The dead
Koders (discontinued)
SymbolHound Code Search (discontinued)
When I originally did the review, Koders turned out to be the winner f...
Get host domain from URL?
... You need to have Request object available which you have in web pages / services but not behind that by default. You can Uri class if you do not have Request object available
– Adil
Jan 26 '16 at 12:27
...
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
In my multithreaded asmx web service I had a class field _allData of my own type SystemData which consists of few List<T> and Dictionary<T> marked as volatile . The system data ( _allData ) is refreshed once in a while and I do it by creating another object called newData and fill...
Do I need a Global.asax.cs file at all if I'm using an OWIN Startup.cs class and move all configurat
...gives you the option to host your application outside of iis, in a windows service for example
– Alexander Derck
May 11 '17 at 22:35
...
git + LaTeX workflow
...le.
Use a remote repo and push your changes upstream regularly. With free service providers like GitHub and Bitbucket (both allow you to create private repos with a free account), there is no reason to not be using these if you're working with Git/Mercurial. At the very least, consider it as a seco...
How to run an application as “run as administrator” from the command prompt? [closed]
... process which is already has admin privileges: "Couldn't install PSEXESVC service"
– Vince
Feb 14 '14 at 2:54
1
...
When to use which design pattern? [closed]
...rn usage is a good sign of possible (probably) code smells. Using it for a service class is more than likely a code smell. Sounds like you need D.I., not singleton. Some people do use them that way. Especially for small (unimportant) code, or POC's. But like I said, there are some effective uses. Do...
Do I need quotes for strings in YAML?
...'s a sample docker-compose.yml file to explain this concept:
version: "3"
services:
traefik:
image: traefik:v2.2.1
command:
- --api.insecure=true # Don't do that in production
- --providers.docker=true
- --providers.docker.exposedbydefault=false
- --entrypoints.web...
FAQ Section: SMS - Frequently Asked Questions - MIT App Inventor Community
... FAQ/Guidelines
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