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AppInventor如何扫二维码？扫码结果如何与Web进行交互？ - App Inventor 2 ...
...扫二维码怎么实现？
[hide]A：使用“条码扫描器”组件：https://www.fun123.cn/reference/ ... html#BarcodeScanner
属性“使用外部扫描”设置为假，其他没有啥要注意的。就调用一下扫描方法，就能使用摄像头扫二维码。...
ImagePicker 图像选择器如何一次选择多张图片？ - App Inventor 2 中文网 -...
https://www.fun123.cn/reference/components/media.html#ImagePicker
根据文档最新版本，是可以选多张图片的，但是实际测试下来，一次只能选一张，可能跟安卓版本及手机有关，可能有的手机可以选择多张，纯猜测未验证。英文社区也有相关...
App Inventor 2 MultiImagePicker 拓展：实现图片/视频多选功能 - App Inve...
...
- 可设置最大选择数量
- 可过滤文件类型
官方文档：https://www.fun123.cn/reference/extensions/MultiImagePicker.html
二、属性
MimeFilter（图片过滤类型）
- 默认值：image/*
- 单选和多选都会使用这个过滤条件
- 如果想选择视频，可...
Importing data from a JSON file into R
...
If the URL is https, like used for Amazon S3, then use getURL
json <- fromJSON(getURL('https://s3.amazonaws.com/bucket/my.json'))
share
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...
URL: Username with @
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Java HTTPS client certificate authentication
I'm fairly new to HTTPS/SSL/TLS and I'm a bit confused over what exactly the clients are supposed to present when authenticating with certificates.
...
VIM + JSLint?
...s using your favorite package manager.
Install Node Package Manager: 'curl https://npmjs.org/install.sh | sh' EDIT: npm IS PART OF node.js NOW
See http://npmjs.org for more info.
Install jshint globally: 'npm install jshint -g'
Put your jshint config file in your $HOME dir: '~/.jshintrc'
Here's J...
How do I copy directories recursively with gulp?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How to write an XPath query to match two attributes?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
How do you make lettered lists using markdown?
...ype: decimal;}
ol ol ol ol ol ol { list-style-type: upper-roman;}
/* https://www.w3schools.com/cssref/pr_list-style-type.asp */
/* https://stackoverflow.com/questions/11445453/css-set-li-indent */
/* https://stackoverflow.com/questions/13366820/how-do-you-make-lettered-lists-using-markdo...