d1t2 dieterplex

Convert Rust books to EPUB (incl. The Rust Programming Language)

The following steps work for all the HTML learning materials on the Learn Rust page:

Click on the "Print this book" icon in the top right corner.
"Cancel" print popup.
Press F12.
Copy, paste, and run the contents of ebookFormatPreparation.js into your browser's console.
Save the modified HTML file.

How to Sign and Release to The Central Repository with GitHub Actions

GitHub allows automated builds using GitHub Actions. A commonly asked question is how to release artifacts (packaged Java jars) built by Maven and Gradle to The Central Repository. The GitHub Actions documentation provides only part of the answer.

So, first, configure your Maven project for staging artifacts to The Central Repository, by reading through Configuring Your Project for Deployment and following those steps. Please make sure that the maven-gpg-plugin is configured to prevent gpg from using PIN entry programs, as follows:

<configuration>
  <gpgArguments>
      <arg>--pinentry-mode</arg>
 loopback

Problem

You have installed GPG, then tried to commit and suddenly you see this error message after it:

error: gpg failed to sign the data
fatal: failed to write commit object

Debug

reMarkable is a paper tablet by https://remarkable.com/.

The reMarkable tablet is the best e-paper in the market. However, it does not have built-in support for CJK (Chiniese, Korean and Japanese) users.

Luckily, this could be resolved by installing CJK fonts on the tablet.

Go to Preference > Storage > Enable USB web interface (Beta).
Connect reMarkable with your PC via a microUSB cable.
SSH to the device as user "root" using the password find in Preference > About. e.g. ssh root@10.11.99.1
Download "NotoSansCJK[you language]-Regular.otf" from *note, there is limited space on the device, so do not sue "Super OpenType/CFF Collection (Super OTC)", an language-specific OTC is ok.

Problem

In Arch Linux mkinitcpio -p linux

shows

Possibly missing firmware for module: aic94xx
 Possibly missing firmware for module: wd719x

1.) Download a Nerd Font

2.) Unzip and copy to ~/.fonts

3.) Run the command fc-cache -fv to manually rebuild the font cache

Using Python 3 + Google Cloud Vision API's OCR to extract text from photos and scanned documents

Just a quickie test in Python 3 (using Requests) to see if Google Cloud Vision can be used to effectively OCR a scanned data table and preserve its structure, in the way that products such as ABBYY FineReader can OCR an image and provide Excel-ready output.

The short answer: No. While Cloud Vision provides bounding polygon coordinates in its output, it doesn't provide it at the word or region level, which would be needed to then calculate the data delimiters.

On the other hand, the OCR quality is pretty good, if you just need to identify text anywhere in an image, without regards to its physical coordinates. I've included two examples:

####### 1. A low-resolution photo of road signs

	//
	// VirtualKeyboard.swift
	// MacBook Air M1 Zhuyin Keyboard
	// Written with SwiftUI ~=300 LOC, < 4hrs
	// Created by Ethan Huang on 2021/1/13.
	// Twitter: @ethanhuang13

	import SwiftUI

	struct VirtualKeyboard: View {

	<?xml version="1.0"?>
	<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
	<fontconfig>
	<alias>
	<family>sans-serif</family>
	<prefer>
	<family>Noto Sans UI</family>
	<family>Noto Sans</family>
	<family>Noto Sans CJK TC</family>
	</prefer>

	# checkout, compile & install
	git clone https://github.com/facebook/watchman.git
	cd watchman/
	git checkout v4.9.0
	sudo apt-get install -y autoconf automake build-essential python-dev libssl-dev libtool
	./autogen.sh
	./configure
	make
	sudo make install