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AppInventor2列表排序，函数式编程轻松实现高级排序算法 - App Inventor 2 ...
1、最简单的升序排序，支持基本数据类型（文本和数字）：
来自文档：https://www.fun123.cn/reference/blocks/lists.html#sort
2、基本类型的降序排序可以实现吗？
当然可以，这时就要用到函数式编程了，按照函数中指定的逻辑进...
- App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
网络微数据库已经出过不少资料了，详见中文文档页面：https://www.fun123.cn/reference/components/storage.html#TinyWebDB
包括公众号都已经发过。mysql 通过 web api 封装中间层是没有太大难度的。还有收费第三方数据库的拓展，如 LeanDB 可...
请问输入文件要往哪放? - App应用开发 - 清泛IT社区，为创新赋能！
...torage.html#FileTools
3、如果仅仅是为了App退出保存一些状态数据，用微数据库组件最为合适。
- App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
当然可以，它是 app 范围内共享的持久化数据，app 退出后数据也会保留。
更多可参考：https://www.fun123.cn/reference/creative/screen_communication.html#%E5%BE%AE%E6%95%B0%E6%8D%AE%E5%BA%93%E4%BC%A0%E5%80%BC
How to make an AJAX call without jQuery?
...etch() method allow you to make web requests.
For example, to request some json from /get-data:
var opts = {
method: 'GET',
headers: {}
};
fetch('/get-data', opts).then(function (response) {
return response.json();
})
.then(function (body) {
//doSomething with body;
});
See here for...
git ignore all files of a certain type, except those in a specific subfolder
...edence patterns sources.
http://schacon.github.com/git/gitignore.html
*.json
!spec/*.json
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What is causing this error - “Fatal error: Unable to find local grunt”
... -g grunt-cli
2. npm init
fill all details and it will create a package.json file.
3. npm install grunt (for grunt dependencies.)
Edit : Updated solution for new versions:
npm install grunt --save-dev
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How do I assign a port mapping to an existing Docker container?
...
You can change the port mapping by directly editing the hostconfig.json file at
/var/lib/docker/containers/[hash_of_the_container]/hostconfig.json
You can determine the [hash_of_the_container] via the docker inspect <container_name> command and the value of the "Id" field is the hash....
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...单位的表，在这张表中 就保存着程序运行的代码段以及数据段的起始地址以及与此相应的段限和页面交换还有程序运行级别还有内存粒度等等的信息。一旦一个程序发生了越界访 问，cpu就会产生相应的异常保护，于是segmentation ...
When should one use RxJava Observable and when simple Callback on Android?
...ter closer to the Callback variant.
Furthermore, if you have access to the JSON feed, it would be kind of weird to retrieve all photos when you're only displaying the PNGs. Just adjust the feed to it only displays PNGs.
First conclusion
It doesn't make your codebase smaller when you're loading a ...