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**Describe the bug**
I'm in progress to create a application for mobile and PWA tech. Using react.js in strict mode. I'm trying to create page with auto open camera to scan QR code but on the page I …
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### Before creating a new issue, please confirm:
- [X] I have [searched for duplicate or closed issues](https://github.com/aws-amplify/amplify-ui/issues?q=is%3Aissue+) and [discussions](https://gith…
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1. When the chessboard is calibrated, is the chessboard fixed in one position? When the camera shoots the chessboard, the camera position: up, down, left, right, front and back Can you change it at wi…
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##### System information (version)
- OpenCV => :4.6.0:
- Operating System / Platform => :Ubuntu 20.04 amd64:
- Compiler => :any:
##### Detailed description
In file `opencv_contrib-4.6…
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When `npm install`ing node-dv with node v6.1.0, node-gyp v3.3.1 and Arch Linux the installation fails
```
AR(target) Release/obj.target/deps/zxing/zxing.a
COPY Release/zxing.a
CXX(target) Relea…
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Define the fields / json-ld context to represent a student ID credential.
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---
title: An HTML element from displaying QR codes
date: 2020-12-04T20:18:15.891Z
submitter: PRIVATE
number: 5fca99877bf33307d003bd0a
tags: [ ]
discussion: https://github.com/WebWeWant/webwewant.fyi…
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RESTful 风格的 URL 定义中,路由名重复如何解决?
遇到问题:在中间件获取路由名时,由于路由同名,无法判断是具体哪个方法执行。
文档地址:https://eggjs.org/zh-cn/basics/router.html
![image](https://user-images.githubusercontent.com/20268389/72667102-2b37df8…
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What is the minimum size of QR code produced? Can two QR codes sit next to each other across short lenght of a4 page and be distinguished?
The basic idea to put all QR codes into a single pdf and t…