.Net, Rails, and other stuff

• Discrete mathematics: High-school algebra, logarithm identities, naive set theory, Boolean algebra, first-order predicate logic, sets, functions, equivalences, partial orders, modular arithmetic, recursive definitions, trees (as abstract objects, not data structures), graphs (vertices and edges, not function plots).

• Proof techniques: direct, indirect, contradiction, exhaustive case analysis, and induction (especially “strong” and “structural” induction). Chapter 0 uses induction, and whenever Chapter n−1 uses induction, so does Chapter n.

• Iterative programming concepts: variables, conditionals, loops, records, indirection (addresses/pointers/references), subroutines, recursion. I do not assume fluency in any particular programming language, but I do assume experience with at least one language that supports both indirection and recursion.

• Fundamental abstract data types: scalars, sequences, vectors, sets, stacks, queues, maps/dictionaries, ordered maps/dictionaries, priority queues.

• Fundamental data structures: arrays, linked lists (single and double, linear and circular), binary search trees, at least one form of balanced binary search tree (such as AVL trees, red-black trees, treaps, skip lists, or splay trees), hash tables, binary heaps, and most importantly, the difference between this list and the previous list.

• Fundamental computational problems: elementary arithmetic, sorting, searching, enumeration, tree traversal (preorder, inorder, postorder, levelorder, and so on).

• Fundamental algorithms: elementary algorism, sequential search, binary search, sorting (selection, insertion, merge, heap, quick, radix, and so on), breadth- and depth-first search in (at least binary) trees, and most importantly, the difference between this list and the previous list.

• Elementary algorithm analysis: Asymptotic notation (o, O, Θ, Ω, ω), translating loops into sums and recursive calls into recurrences, evaluating simple sums and recurrences.

• Mathematical maturity: facility with abstraction, formal (especially recursive) definitions, and (especially inductive) proofs; writing and following mathematical arguments; recognizing and avoiding syntactic, semantic, and/or logical nonsense.

Books:

Margaret M. Fleck. Building Blocks for Theoretical Computer Science, unpublished textbook, most recently revised January 2013. Available from http://mfleck.cs.illinois.edu/building-blocks/.

• Eric Lehman, F. Thomson Leighton, and Albert R. Meyer. Mathematics for Computer Science, unpublished lecture notes, most recent (public) revision June 2018. Available from https://courses.csail.mit.edu/6.042/spring18/. (I strongly recommend searching for the most recent revision.)

• Pat Morin. Open Data Structures, most recently revised January 2016 (edition 0.1Gβ). A free open-content textbook, which Pat maintains and regularly updates. Available from http://opendatastructures.org/.

Thursday, August 11, 2022

Latest Computer Science courses from MIT's OCW

https://ocw.mit.edu/search/?s=-runs.best_start_date&t=Computer%20Science

Tuesday, August 9, 2022

Linear Programming related - Linear Equations in two or three variables

https://byjus.com/maths/how-to-solve-system-of-linear-equation-in-two-variables-or-three-variables/

Sunday, July 31, 2022

Web Pages performance improvement - pagespeedchecklist.com

https://pagespeedchecklist.com/

What's The Difference Between Async & Defer?

https://pagespeedchecklist.com/async-and-defer

Sunday, July 24, 2022

How I ported a Rails site to iOS and launched in the App Store in 7 weeks

https://www.reddit.com/r/rails/comments/w4ofvg/how_i_ported_a_rails_site_to_ios_and_launched_in/

Thursday, July 21, 2022

What is mattr_accessor in a Rails module?

https://stackoverflow.com/questions/185573/what-is-mattr-accessor-in-a-rails-module

Wednesday, July 20, 2022

The Biggest Project in Modern Mathematics - June 2, 2022

The surprising story of the exponential function

https://tivadardanka.com/blog/the-surprising-story-of-the-exponential-function

Tuesday, July 19, 2022

Tailwind - For & Against

https://javascript.plainenglish.io/tailwind-is-an-anti-pattern-ed3f64f565f0

Saturday, July 16, 2022

An overview of Tailwind

Wednesday, July 13, 2022

AWS Well-Architected - Learn, measure, and build using architectural best practices

https://aws.amazon.com/architecture/well-architected/?wa-lens-whitepapers.sort-by=item.additionalFields.sortDate&wa-lens-whitepapers.sort-order=desc

Wednesday, July 6, 2022

Difference between resource and resources in rails routing

https://stackoverflow.com/questions/11356146/difference-between-resource-and-resources-in-rails-routing

https://stackoverflow.com/a/33258203

Wednesday, June 22, 2022

Accessing a website running on localhost from iPhone browser

https://stackoverflow.com/questions/3132105/how-do-you-access-a-website-running-on-localhost-from-iphone-browser

Monday, June 20, 2022

How to run bundler with a lower version

~/xxxxx/xxxxx/xxxxx/xxxx/xxxxxx/xxxxxxxx$ gem list | grep bundler
bundler (2.1.4, 1.17.3, 1.16.4, 1.16.1)

~/xxxxx/xxxxx/xxxxx/xxxx/xxxxxx/xxxxxxxx$ bundle _1.17.3_ install

https://stackoverflow.com/questions/9725811/how-to-downgrade-bundler-or-upgrade-rails

Sunday, June 19, 2022

Intro into networking fundamentals.

Friday, June 3, 2022

Rails blog - akshaykhot.com

https://akshaykhot.com/

Monday, May 30, 2022

Building a SaaS company in 24 hours

https://twitter.com/imsamthompson/status/1530967700410748928?s=21

Monday, May 23, 2022

Install nvm on MacOS

https://stackoverflow.com/questions/67241196/error-no-template-named-remove-cv-t-in-namespace-std-did-you-mean-remove

https://tecadmin.net/install-nvm-macos-with-homebrew/

Sunday, May 15, 2022

Boring Rails - Learn about the boring tools and practices used by Basecamp, GitHub, and Shopify

https://boringrails.com/

Thursday, May 12, 2022

Best Practices for Web Images

https://twitter.com/_georgemoller/status/1524767909129732097?s=21

Saturday, May 7, 2022

Rails - View Rspecs

https://pragmaticpineapple.com/why-write-rails-view-tests/

Thursday, May 5, 2022

React 18 related - Reactathan 2022

https://www.youtube.com/watch?v=Ck-e3hd3pKw

Monday, May 2, 2022

Multi-tenancy in Rails applications

https://softwarebrothers.co/blog/multi-tenancy-in-ruby-on-rails-many-tenants-in-one-application/

Sunday, May 1, 2022

Upgrading from Rails 6.1 to Rails 7.0

https://edgeguides.rubyonrails.org/7_0_release_notes.html

https://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-6-1-to-rails-7-0

https://medium.com/geekculture/whats-new-in-rails-7-b97d44eecdb2

https://dev.to/thomasvanholder/how-to-upgrade-rails-61-to-rails-7-33a3

https://dev.to/thomasvanholder/rails-7-framework-defaults-part-1-2a59

https://www.fastruby.io/blog/rails/upgrades/upgrade-rails-6-1-to-7-0.html

https://www.youtube.com/watch?v=SjdV_1k1QWY ---> Upgrade from Rails 6 to Rails 7 – web-crunch.com

Tuesday, April 26, 2022

Useful Ruby gems 2022

https://akshaykhot.com/useful-ruby-gems/

Let’s recreate Notion in Ruby on Rails - Episode 1 - Creating Pages

Wednesday, April 20, 2022

Turbo Frames on Rails - 08 Oct 2021

https://www.colby.so/posts/turbo-frames-on-rails

Monday, April 18, 2022

Rails - ActiveRecord - How to combine multiple scopes with OR

https://stackoverflow.com/questions/67913241/how-to-combine-multiple-scopes-with-or

Thursday, April 14, 2022

CSS - Understanding Layout Algorithms

https://www.joshwcomeau.com/css/understanding-layout-algorithms/

Wednesday, April 13, 2022

What is OAuth?

https://www.varonis.com/blog/what-is-oauth

Rails: API authentication with Devise and Doorkeeper

https://rubyyagi.com/rails-api-authentication-devise-doorkeeper/

Tuesday, April 12, 2022

Rails ActiveRecord: 2 ways to write 'where' clause

result = Product.where("description LIKE ?", "%Lorem%")

result = Product.where("description LIKE :term", {term: "%Lorem%"})

Friday, April 8, 2022

Rails: Free Hotwire course

https://store.afomera.dev/learn-hotwire

Wednesday, April 6, 2022

Thursday, March 31, 2022

MySQL - finding out slow queries

SELECT * FROM `mysql`.slow_log ORDER BY query_time DESC;

Tuesday, March 29, 2022

Rails - present? vs any?

https://www.ombulabs.com/blog/benchmark/performance/rails/present-vs-any-vs-exists.html

Sunday, March 27, 2022

Rails Refactoring Example: Introduce Null Object - 2012

https://thoughtbot.com/blog/rails-refactoring-example-introduce-null-object

Similar good Rails articles at - https://thoughtbot.com/blog

Rails: rendering collections

https://thoughtbot.com/blog/rendering-collections-in-rails

Saturday, March 26, 2022

Elixir - rexbug - for debugging

https://hexdocs.pm/rexbug

https://twitter.com/codiferouscoder/status/1507831451521359878?s=21

Rails - Token based authentication

https://api.rubyonrails.org/classes/ActionController/HttpAuthentication/Token.html

https://twitter.com/strzibnyj/status/1507771674455908366?s=21

Friday, March 25, 2022

Ruby on Rails SaaS Framework

https://bullettrain.co/

grep - exclude strings

https://stackoverflow.com/questions/16212656/grep-exclude-multiple-strings

Thursday, March 24, 2022

Elixir Desktop - iOS example

https://github.com/elixir-desktop/ios-example-app

Wednesday, March 23, 2022

Rails - mattr_accessor example

https://twitter.com/julian_rubisch/status/1506322755960119296?s=21

Tuesday, March 22, 2022

User notifications with Rails, Noticed, and Hotwire

https://www.colby.so/posts/user-notifications-with-rails-noticed-and-hotwire

Same article here also - https://dev.to/davidcolbyatx/user-notifications-with-rails-noticed-and-hotwire-39ga

Monday, March 21, 2022

Capybara - RSpecs

https://devhints.io/capybara

https://rubydoc.info/github/jnicklas/capybara/Capybara/RSpecMatchers

https://www.rubydoc.info/github/jnicklas/capybara/master/Capybara/Node/Matchers

https://guides.rubyonrails.org/testing.html#system-testing

Tuesday, March 15, 2022

NativeBase - Universal Components for React & React Native

https://nativebase.io/

Tailwind Standalone for Phoenix

https://fly.io/phoenix-files/tailwind-standalone/

Monday, March 14, 2022

Rails Hotwire/Turbo examples

https://github.com/thoughtbot/hotwire-example-template

SQL Tutorial for MySQL

https://www.mysqltutorial.org/

https://www.mysqltutorial.org/tryit/

SQL Window functions

https://www.sqltutorial.org/sql-window-functions/

https://www.mysqltutorial.org/mysql-window-functions/

Thursday, March 10, 2022

Mathematics for Machine Learning

https://mml-book.github.io/

Monday, March 7, 2022

Petal UI components

https://petal.build/

Sunday, March 6, 2022

sed command example

https://stackoverflow.com/questions/71318743/kubectl-versions-error-exec-plugin-is-configured-to-use-api-version-client-auth

Below command will take a backup of the file and substitute v1alpha1 with v1beta1

sed -i .bak -e 's/v1alpha1/v1beta1/' ~/.kube/config

Friday, March 4, 2022

React Native project - Sep 19 2021

Build Uber Eats with React Native & YELP API | Redux | Firebase | Google API

React Native project - Jul 30, 2021

Let's build Uber 2.0 with REACT NATIVE! (Navigation, Redux, Tailwind CSS & Google Autocomplete)

Rails improvements in 2021 - DHH

https://world.hey.com/dhh/no-railsconf-faa7935e

Wednesday, March 2, 2022

Solid.js

https://www.reddit.com/r/programming/comments/t3wwt6/solidjs_feels_like_what_i_always_wanted_react_to/

A Case Study into Usage of Redis Data Structures in an E-Commerce Application

https://medium.com/geekculture/a-case-study-into-usage-of-redis-data-structures-in-an-e-commerce-application-afdc5daaf1d9

The Complete React Native Course 2021 : from Zero to Hero

React Native Tutorial for Beginners - Build a React Native App [2020]

Tuesday, March 1, 2022

Checklist app in SwiftUI using Core Data

Checklist app in SwiftUI using Core Data - Part 1

Jul 19, 2021

https://www.youtube.com/watch?v=6qtUL8Qgmcw

Checklist app in SwiftUI using Core Data - Part 2

Jul 21, 2021

https://www.youtube.com/watch?v=4RJrHbk-VgE

Build a macOS Menu Bar Realtime Crypto Tracker with SwiftUI & WebSocket - Feb 4, 2022

SwiftUI Basic Components

https://betterprogramming.pub/swiftui-basic-components-ac2c62dc7b95

New CSS features in 2022

https://www.smashingmagazine.com/2022/03/new-css-features-2022/

Tech Interview Prep

https://aikikode.me/blog/interview-preparation-2022/

SwiftUI - Alternative to MVVM OR cleaner MVVM

iOS related: UI Design for Developers

https://www.youtube.com/playlist?list=PLDaHCLWmCcQLvG6AOpw5VxopkBKIcH9m7

Above needs subscription

Adapt SwiftUI app for iPad, Landscape, and Dark Mode

Wednesday, February 23, 2022

Free Rails course

https://railscodealong.com

An Introduction to the ViewComponent Gem

https://www.honeybadger.io/blog/ruby-view-components/

Tuesday, February 22, 2022

Rails - Polymorphic discussion

https://projectramon.wordpress.com/2014/06/02/exploring-rails-polymorphic-mayhem-accepts-nested-attribute-success/

Design Patterns in Ruby

https://bogdanvlviv.com/posts/ruby/patterns/design-patterns-in-ruby.html

Monday, February 21, 2022

Fetch records in a custom order with ActiveRecord in Rails - Dec 2021

https://rubyinrails.com/2021/12/14/fetch-records-in-custom-order-with-rails-activerecord/

Sunday, February 20, 2022

XSS - Cross-Site Scripting Attacks

https://owasp.org/www-community/attacks/xss/

DOMPurify - santizer to prevent XSS attacks

https://www.npmjs.com/package/dompurify

Nix - package manager

https://revelry.co/insights/development/nix-time/

How to learn Android development in 2022

https://proandroiddev.com/if-i-were-to-start-my-android-career-in-2022-here-is-how-i-would-do-it-c7f149dc8cbf

Server-Sent Events, WebSockets, and HTTP

https://www.mnot.net/blog/2022/02/20/websockets

Programmable Search Engine from Google

https://programmablesearchengine.google.com/about/

https://www.reddit.com/r/programming/comments/swfzq8/i_just_discovered_googles_programmable_search/

Saturday, February 19, 2022

How to build a weather station with Elixir, Nerves, and TimescaleDB

https://www.timescale.com/blog/how-to-build-a-weather-station-with-elixir-nerves-and-timescaledb/

Friday, February 18, 2022

Python Financial Stock analysis (Algo Trading)

https://medium.com/vinsloev-academy/python-financial-stock-analysis-algo-trading-4d5304d07416

Reactjs - Portals

https://reactjs.org/docs/portals.html

RSpec tutorial

https://www.rubyguides.com/2018/07/rspec-tutorial/#Getting_Started_With_RSpec

Tuesday, February 15, 2022

Pagination and infinite scrolling with Rails and the Hotwire stack - Feb 5 2022

https://dev.to/davidcolbyatx/pagination-and-infinite-scrolling-with-rails-and-the-hotwire-stack-34om

Building a video converter with Rails 6 and FFmpeg - April 30 2021

https://dev.to/davidcolbyatx/building-a-video-converter-with-rails-6-and-ffmpeg-5e88

Monday, February 14, 2022

Server-Sent Events: the alternative to WebSockets you should be using

https://germano.dev/sse-websockets/

Saturday, February 12, 2022

Post by David Rosenthal about issues with Blockchain & Web3

https://blog.dshr.org/2022/02/ee380-talk.html

Friday, February 11, 2022

Infinite Scrolling using Rails & Stimulus

https://www.rubycube.dev/blog/infinite-scroll-rails-stimulus

Thursday, February 10, 2022

Real world example of machine learning on Rails

https://serpapi.com/blog/real-world-example-of-machine-learning-on-rails/

Wednesday, February 9, 2022

FFMPEG Tutorial: convert and stream your videos with HLS and VideoJS.

https://ffmpegfromzerotohero.com/blog/ffmpeg-tutorial-convert-and-stream-your-videos-with-hls-and-videojs/

https://gist.github.com/lukebussey/4d27678c72580aeb660c19a6fb73e9ee

Tuesday, February 8, 2022

Sha256 Algorithm Explained

https://sha256algorithm.com/

Principles for Designing and Deploying Scalable Applications on Kubernetes - Feb 2022

https://elastisys.com/designing-and-deploying-scalable-applications-on-kubernetes/

AWS Lambda and ffmpeg

https://aws.amazon.com/blogs/media/processing-user-generated-content-using-aws-lambda-and-ffmpeg/

https://aws.amazon.com/blogs/media/2020-resolution-add-user-generated-content-to-your-applications/

Signed Cookies and Signed Urls on AWS CloudFront

https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/PrivateContent.html

https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/private-content-signed-urls.html

Video-on-demand on AWS

https://aws.amazon.com/solutions/implementations/video-on-demand-on-aws/

YouTube vs Vimeo

https://blog.hubspot.com/marketing/youtube-vs-vimeo

HTML5 Streaming

https://flussonic.com/blog/news/html5-streaming/

Sunday, February 6, 2022

Vanity -an A/B testing framework for Rails that is datastore agnostic.

https://github.com/assaf/vanity

Tuesday, January 25, 2022

SwiftUI - Quick Start & Projects

https://www.hackingwithswift.com/books/ios-swiftui/

https://www.hackingwithswift.com/quick-start/swiftui

Monday, January 24, 2022

Elixir Desktop

https://github.com/elixir-desktop/desktop

Thursday, January 20, 2022

CSS - Absolute Position examples

https://twitter.com/_georgemoller/status/1483815536865779718?s=21

Tuesday, January 18, 2022

Hybrid iOS apps with Turbo

https://masilotti.com/turbo-ios/

Conditional Rendering With Turbo Stream Broadcasts

https://dev.to/davidcolbyatx/conditional-rendering-with-turbo-stream-broadcasts-i68

Sunday, January 16, 2022

Rails & Hotwire - Good articles on www.colby.so

https://www.colby.so/

Rails: Good article on Turbo Streams

https://www.colby.so/posts/turbo-streams-on-rails

Friday, January 14, 2022

info.plist in Xcode 13

https://stackoverflow.com/questions/67896404/where-is-info-plist-in-xcode-13-missing-not-inside-project-navigator

Tuesday, January 11, 2022

Rails - Counter Cache

Counter Cache

https://rubyinrails.com/2019/04/10/rails-counter-cache-associations/

https://scoutapm.com/blog/how-to-start-using-counter-caches-in-rails

For many-many association:

https://coderwall.com/p/muvy9w/forget-counter-cache-for-many-to-many-associations-in-rails

https://stackoverflow.com/questions/9595338/counter-cache-for-a-model-with-a-many-to-many-association

https://stackoverflow.com/questions/5256897/counter-cache-with-has-many-through

Monday, January 10, 2022

CSS - container queries polyfill

https://css-tricks.com/a-new-container-query-polyfill-that-just-works/

Saturday, January 8, 2022

Rails related: Concerns, Module-method extraction Vs Class-based extraction, Concerning module

1) Single-use Modules are probably better off as Classes as per the below article.

https://www.cloudbees.com/blog/when-to-be-concerned-about-concerns

By and large, maintainers tend to agree that smaller composable classes are the best way to isolate code and keep things clean.

....

I'm not saying that you need to go out and refactor all your single-use modules into classes. I am saying if you find yourself reaching to do a module-method extraction, stop. Consider what road you're starting down and these lessons I've shared. What would a class-based extraction look like instead?

2) https://blog.appsignal.com/2020/09/16/rails-concers-to-concern-or-not-to-concern.html

3) https://api.rubyonrails.org/v5.0/classes/Module/Concerning.html

4) https://scoutapm.com/blog/rails-concerns - sort of consolidates content from the above articles

5) https://rails.devcamp.com/trails/dissecting-rails-5/campsites/data-management-rails/guides/how-to-use-concerns-rails-5

Friday, January 7, 2022

Ruby - differences between Proc and Lambda

https://medium.com/rubycademy/procs-and-lambdas-46433b93080d

Is module_function really the same as extend self?

https://apidock.com/ruby/Module/module_function

https://medium.com/rubycademy/is-module-function-really-the-same-as-extend-self-ac1e96a1cda0

Rails related - Performance improvement

View performance:

https://blog.appsignal.com/2020/01/22/rails-is-fast-optimize-your-view-performance.html

ActiveRecord performance:

https://blog.appsignal.com/2021/02/24/troubleshooting-activerecord-performance.html

Building a Rails App With Multiple Subdomains

https://blog.appsignal.com/2020/03/04/building-a-rails-app-with-multiple-subdomains.html

Building a Multi-Tenant Ruby-on-Rails app

https://blog.appsignal.com/2020/12/02/building-a-multi-tenant-ruby-on-rails-app-with-subdomains.html

Rails - How to implement Routes for Many-to-Many

https://stackoverflow.com/questions/31258275/rails-4-how-to-implement-routes-for-a-many-to-many-relationship

https://edgeguides.rubyonrails.org/routing.html#routing-concerns

https://edgeapi.rubyonrails.org/classes/ActionDispatch/Routing/Mapper/Concerns.html#method-i-concern

Thursday, January 6, 2022

CSS Transitions: Here's How You Learn Most Fundamentals of CSS Transition Curves With Interactive Visualizations

https://blog.maximeheckel.com/posts/cubic-bezier-from-math-to-motion

Rails: Hotwire in the real world

https://finnian.io/blog/hotwire-in-the-real-world/

Tuesday, January 4, 2022

Ruby/Rails related sites

https://rubyflow.com/ - Links to articles

https://www.speedshop.co/blog/ - Rails performance blog

A Case for Outside In Design – Sandro Mancuso

Sunday, January 2, 2022

Draft Pull Requests

https://software.rajivprab.com/2021/12/26/our-engineering-principles-and-best-practices/

Draft Pull-Requests
For each pull-request, first create a draft pull-request, demonstrating the proposed implementation at a high level. Use TODOs and placeholders to indicate which classes/methods you will be touching. Send it off for review and then immediately start working on the actual code and tests.
This mitigates the amount of wasted effort, if your reviewer then suggests a completely different way of implementing things. Once your reviewer approves the draft, link to it in your pull-request, to make sure everyone knows what was already discussed and agreed on.

https://www.reddit.com/r/programming/comments/rurxhl/you_dont_need_that_cors_request/

Computer Networking Introduction - Ethernet and IP (Heavily Illustrated)

https://iximiuz.com/en/posts/computer-networking-101/

Container Networking Is Simple!

https://iximiuz.com/en/posts/container-networking-is-simple/

Saturday, January 1, 2022

SwiftUI Videos

https://www.youtube.com/channel/UCsuV4MRk_aB291SrchUVb4w

SwiftUI Tutorial - Advanced ScrollView - Snap Interval

Friday, December 31, 2021

Rails ActiveRecord Associations - Join Tables (Many-to-Many), Polymorphic

https://roseweixel.github.io/blog/2014/10/22/join-tables-in-active-record/

https://medium.com/@pk60905/many-to-many-relationship-in-rails-cf86e12db8b0

https://medium.com/@pk60905/polymorphic-association-4deb6f87bf8

Thursday, December 30, 2021

Akka and Kubernetes, the beginning of a beautiful relationship – Hugh McKee

Thursday, December 23, 2021

RubyConf 2021 - Keynote: Beyond Ruby3.0 by Yukihiro Matsumoto

Wednesday, December 22, 2021

Beginning Elixir - elixirnewbie.com

https://www.elixirnewbie.com

Learn CSS by implementing pre-built designs - codewell.cc

codewell.cc

Tuesday, December 21, 2021

React Native related - major performance issues fixed with new changes

https://betterprogramming.pub/you-dont-have-to-compare-flutter-and-react-native-anymore-15ddc4c1342a

What Problem Blockchains Actually Solve

https://solutionspace.blog/2021/12/21/what-problem-blockchains-actually-solve/

Ruby related - rubyguides.com

https://www.rubyguides.com/

patterns.dev - Improve how you architect webapps

https://www.patterns.dev

Saturday, December 18, 2021

Containers Tutorial

https://redhat-scholars.github.io/containers-tutorial/template-tutorial/index.html

Thursday, December 16, 2021

Ruby: class_eval vs instance_eval

https://stackoverflow.com/questions/900419/how-to-understand-the-difference-between-class-eval-and-instance-eval

https://stackoverflow.com/questions/900704/why-does-instance-eval-define-a-class-method-when-called-on-a-class

https://yehudakatz.com/2009/11/15/metaprogramming-in-ruby-its-all-about-the-self/

https://blog.yugui.jp/entry/846

Rails: Concerns

https://blog.appsignal.com/2020/09/16/rails-concers-to-concern-or-not-to-concern.html

Swift, SwiftUI tutorials

https://www.hackingwithswift.com/

https://www.hackingwithswift.com/100/swiftui

https://www.hackingwithswift.com/100

Sunday, December 12, 2021

SOLID for OOP and Functional programming

OOP:

https://simple.wikipedia.org/wiki/SOLID_(object-oriented_design)

https://www.digitalocean.com/community/conceptual_articles/s-o-l-i-d-the-first-five-principles-of-object-oriented-design

Functional Programming:

https://stackoverflow.com/questions/5577054/solid-for-functional-programming

https://softwareengineering.stackexchange.com/questions/384837/are-there-any-well-known-alternatives-to-the-solid-principles-for-oo-programming

Fomantic UI - community fork of Semantic UI

https://fomantic-ui.com/

Saturday, December 11, 2021

Tailwind discussion

https://elixirforum.com/t/why-am-i-only-now-learning-about-milligram-it-is-included-by-default-why-the-tailwind-hype/43331/33

Thursday, December 9, 2021

Ethereum vs Bitcoin, Uses of Ethereum

https://finance.yahoo.com/news/ethereum-developer-sounds-off-on-nf-ts-metaverse-and-dystopian-facebook-153021379.html

Friday, December 3, 2021

Using SSE Instead Of WebSockets For Unidirectional Data Flow Over HTTP/2

https://www.smashingmagazine.com/2018/02/sse-websockets-data-flow-http2/

Saturday, November 27, 2021

Explaining Value vs. Reference in Javascript

https://codeburst.io/explaining-value-vs-reference-in-javascript-647a975e12a0

How to get (kind of) memory address from any JavaScript object

Tuesday, November 23, 2021

Cryptography book - The Joy of Cryptography

https://joyofcryptography.com/

https://joyofcryptography.com/pdf/book.pdf

Learning Containers From The Bottom Up

https://iximiuz.com/en/posts/container-learning-path/

Monday, November 15, 2021

The Roadmap To DevOps Developer for 2021

https://decipherzone.com/blog-detail/roadmap-devops-2021

C++ by example

https://cppbyexample.com/

Running AWS Services In A Laptop Using LocalStack

Friday, November 5, 2021

Kubernetes related

Sunday, October 31, 2021

isapplesiliconready.com

https://isapplesiliconready.com/

iOS & Android components

https://developer.android.com/docs

https://developer.apple.com/documentation/uikit

Rails - performance - Finding slow ActiveRecord queries with Scout

https://scoutapm.com/blog/finding-slow-activerecord-queries-with-scout

Monitoring Kubernetes with Prometheus

https://scoutapm.com/blog/monitoring-kubernetes-prometheus

React Native related - Galio component framework

https://galio.io/docs/#/?id=galio

Friday, October 29, 2021

Dan Abramov's thoughts on Tailwind CSS

https://twitter.com/dan_abramov/status/1452324924421550080?s=21

Thursday, October 28, 2021

Microservices related - Event Driven Microservices: Achieving evolutionary development

https://itnext.io/event-driven-microservices-achieving-evolutionary-development-278c18caf6a3

New features in iOS 15

https://www.apple.com/ios/ios-15/

https://www.apple.com/ios/ios-15/features/

Wednesday, October 27, 2021

Software Engineering videos by Hussein Nasser

https://www.youtube.com/c/HusseinNasser-software-engineering/videos?view=0&sort=dd&flow=grid

Monday, October 25, 2021

Nightmare on AWS street: mistakes we made and overcoming challenges of starting out with serverless

Implementing a Task Queue in SQL

https://reflect.run/articles/sql-queue/

Offline First Database Comparison - Exact Same App with Firebase, AWS Amplify, RxDB, PouchDB and WatermelonDB

https://github.com/pubkey/client-side-databases

Sunday, October 17, 2021

SwiftUI in 2021 - Ready for Production?

https://betterprogramming.pub/swiftui-2021-the-good-the-bad-and-the-ugly-458c6ee768f9

Episode 91: “Is SwiftUI ready for production?” with special guest David Smith

(Feb 2021)

https://www.swiftbysundell.com/podcast/91/

SwiftUI Tutorial on Apple website

https://developer.apple.com/tutorials/swiftui/

Learn OpenCV

https://learnopencv.com/

Image Detection, Recognition, And Classification With Machine Learning

https://azati.ai/image-detection-recognition-and-classification-with-machine-learning/

Violence Detection in Video Using Computer Vision Techniques

https://www.cs.cmu.edu/~rahuls/pub/caip2011-rahuls.pdf

Fast Violence Detection in Video

https://labicvl.github.io/docs/pubs/Oscar_VISAPP_2014.pdf

Deep Surveillance Detecting Violence with Neural Networks

https://towardsdatascience.com/deep-surveillance-6b389abeaf95

Monday, October 4, 2021

Camtasia 2021 - Background Noise Removal Problem

https://support.techsmith.com/hc/en-us/community/posts/4403816058381-Camtasia-2021-Noise-Removal-cannot-remove-background-noise-in-mp4-file-

Sunday, October 3, 2021

How to use Camtasia 2021 - Video Editing Tutorial

Wednesday, September 29, 2021

Full Roadmap to learn Blockchain development in 2021

Tuesday, September 28, 2021

pact-workshop-js for Contract Testing

https://github.com/pact-foundation/pact-workshop-js

Webinar by Kavitha Appakayal of eBay - Shift in testing and continuous delivery

Tuesday, September 21, 2021

Content Creation Tools

https://dev.to/canburaks/awesome-content-creation-tools-2705

Wednesday, September 1, 2021

What is offsetHeight, clientHeight, scrollHeight?

https://stackoverflow.com/questions/22675126/what-is-offsetheight-clientheight-scrollheight

Tuesday, August 17, 2021

Javascript - Debounce vs Throttle

https://redd.one/blog/debounce-vs-throttle

Monday, August 16, 2021

git - Remove credentials from git

https://exceptionshub.com/remove-credentials-from-git.html

Monday, August 9, 2021

How to serve scaled images

https://twitter.com/michaelketzer/status/1424651837848834049?s=21

CSS Container Queries

https://css-tricks.com/say-hello-to-css-container-queries/

CSS Developer Roadmap with Free Resources

https://twitter.com/_georgemoller/status/1424729844231847939?s=21

Build your own NeXT with a virtual machine

https://learn.adafruit.com/build-your-own-next-with-a-virtual-machine?view=all

Sunday, August 8, 2021

CSS Layout related

https://www.youtube.com/c/LayoutLand/videos

CSS Custom Properties In The Cascade, CSS Variables With Inline Styles

CSS Custom Properties In The Cascade - July 2019

https://www.smashingmagazine.com/2019/07/css-custom-properties-cascade/

CSS Variables With Inline Styles - Nov 2019

https://ishadeed.com/article/css-variables-inline-styles/

Efficient Infinite Utility Helpers Using Inline CSS Custom Properties and calc() - July 2021

https://css-tricks.com/efficient-infinite-utility-helpers-using-inline-css-custom-properties-and-calc/

Is it Time to Ditch the Design Grid? - July 2021

https://css-irl.info/is-it-time-to-ditch-the-design-grid/

Detecting Hover-Capable Devices - June 2021

https://css-irl.info/detecting-hover-capable-devices/

Jen Simmons - Everything You Know About Web Design Just Changed - Oct 2018

Polypane - browser tool for web developers and designers

https://polypane.app

Find that one element on your web page that is causing a 1px horizontal scroll

https://twitter.com/shrutibalasa/status/1424088805003304961?s=21

Why I Don't Like Tailwind CSS - Aleksandr Hovhannisyan

https://www.aleksandrhovhannisyan.com/blog/why-i-dont-like-tailwind-css/

Flourish - Data Visualisation

https://tiiny.host/blog/creating-beautiful-html-visualizations-with-flourish-a-complete-guide/

Wednesday, August 4, 2021

AMA About the Java Language — Brian Goetz and Nicolai Parlog

Monday, August 2, 2021

Connecting Elixir GenServer and Phoenix LiveView

https://mattmower.com/2021/06/28/connecting-elixir-genserver-and-phoenix-liveview/

Saturday, July 31, 2021

Ben Awad - Fullstack React GraphQL TypeScript Tutorial - 14h course on Youtube

Read a paper: Program Comprehension and Code Complexity Metrics

Friday, July 30, 2021

Responsive Design - useful websites

Useful websites for Responsive Design work:

Statcounter

sizzy.co

Javascript - what's new in es2022?

https://yagmurcetintas.com/journal/whats-new-in-es2022

Lunatic - an Erlang-inspired runtime for WebAssembly

https://lunatic.solutions/

How to improve your Docker containers security [cheat sheet included]

https://blog.gitguardian.com/how-to-improve-your-docker-containers-security-cheat-sheet/

Daisy UI - Tailwind CSS component library

https://daisyui.com/

Tuesday, July 20, 2021

React with Typescript tutorials

TypeScript Function Syntaxes

https://kentcdodds.com/blog/typescript-function-syntaxes

Monday, July 19, 2021

React 18 - New Root API, Suspense

https://dev.to/cassidoo/react-18-alpha-is-out-now-what-2apj

How to use CSS Modules with TypeScript and webpack

https://blog.sapegin.me/all/typescript-css-modules/

Kent C Dodds - How to use React Context effectively

https://kentcdodds.com/blog/how-to-use-react-context-effectively

Kent C Dodds - How to write a React Component in TypeScript

https://kentcdodds.com/blog/how-to-write-a-react-component-in-typescript

css-tricks.com - Links on React and JavaScript

https://css-tricks.com/links-on-react-and-javascript/

Sunday, July 18, 2021

Style the Web using User Styles

https://userstyles.org

CSS Modules, Examples

https://www.javascriptstuff.com/what-are-css-modules/

https://www.javascriptstuff.com/css-modules-by-example/

https://blog.logrocket.com/a-deep-dive-into-css-modules/

Getting started with CSS modules in React

https://blog.pusher.com/css-modules-react/

Saturday, July 17, 2021

Flowchart on AWS database services

AWS AppSync: Five Reasons You Should Consider It Over API Gateway

https://lumigo.io/aws-serverless-ecosystem/aws-appsync-five-reasons-you-should-consider-it-over-api-gateway/

Redis in 100 Seconds

Typescript & CSS - How to use CSS Modules with TypeScript and webpack

https://blog.sapegin.me/all/typescript-css-modules/

Javascript - Sorting an array of objects by property values

https://stackoverflow.com/questions/979256/sorting-an-array-of-objects-by-property-values

Similar technique can be used to sort an array of arrays.

React - Material UI - Badge - Styling badge component

https://stackoverflow.com/questions/55766980/custom-color-to-badge-component-not-working

https://stackoverflow.com/questions/57076205/how-to-style-the-badge-component?rq=1

Friday, July 16, 2021

An Incremental Approach to Declarative Design

https://zachdaniel.dev/incremental-declarative-design/

Deploying an Elixir LiveView application to DigitalOcean's new App Platform - 2021March

https://equip.93software.com/articles/deploying-elixir-live-view-to-digitalocean-app-platform

Best Practices for Deploying Elixir Apps - 31 December 2019

https://www.cogini.com/blog/best-practices-for-deploying-elixir-apps/

How Amazon Drone Delivery Will Work - Dec 4 2020

Wednesday, July 14, 2021

Typescript tutorial

https://ts.chibicode.com/todo/

https://2ality.com/2018/04/type-notation-typescript.html

Y Combinator for Non-programmers - A free course on one of the coolest ideas in Computer Science

https://ycombinator.chibicode.com

Tuesday, July 13, 2021

Typescript Cheatsheet for React

https://github.com/typescript-cheatsheets/react

Monday, July 12, 2021

AWS Blog for Front-End Web & Mobile

https://aws.amazon.com/blogs/mobile

Sunday, July 11, 2021

Introducing Direct Lambda Resolvers: AWS AppSync GraphQL APIs without VTL

https://aws.amazon.com/blogs/mobile/appsync-direct-lambda/

Building Real-time Serverless APIs with PostgreSQL, CDK, TypeScript, and AWS AppSync

https://aws.amazon.com/blogs/mobile/building-real-time-serverless-apis-with-postgres-cdk-typescript-and-aws-appsync/

Connect Amplify DataStore with existing SQL datasources; adding offline and sync features in your application

https://aws.amazon.com/blogs/mobile/connect-amplify-datastore-with-existing-sql-datasources-adding-offline-and-sync-features-in-your-application/

AWS Amplify

https://www.freecodecamp.org/news/ultimate-guide-to-aws-amplify-and-reacxt/

https://betterprogramming.pub/build-a-react-app-with-authentication-using-aws-amplify-49db1dfdc290

https://dzone.com/articles/a-complete-guide-for-integrating-aws-amplify-to-re

Connecting to a database from AWS Lambda function - April 2020

https://ahmedahamid.com/connecting-to-a-database-from-aws/

Friday, July 9, 2021

Comparing Hooks Libraries for GraphQL

https://blog.logrocket.com/comparing-hooks-libraries-for-graphql/

Thursday, July 8, 2021

Algorithms - Visualization

https://www.cs.usfca.edu/~galles/visualization/Algorithms.html

Sunday, July 4, 2021

Vite demo by Evan You

Friday, July 2, 2021

Rails - Generating PDFs

https://code.tutsplus.com/tutorials/generating-pdfs-from-html-with-rails--cms-22918

Dynamodb Single Table

https://www.alexdebrie.com/posts/dynamodb-single-table/

Thursday, July 1, 2021

Rails - unregister a Resque worker

workers = Resque.workers.select {|w| w.to_s.include? "942ng"}

workers.each do |w|

w.unregister_worker

end

Monday, June 28, 2021

educative.io course - Grokking the Advanced System Design Interview - Learn Interactively

https://www.educative.io/courses/grokking-adv-system-design-intvw

Sunday, June 27, 2021

But how does bitcoin actually work?

Friday, June 25, 2021

Redux - Can I dispatch an action in reducer?

https://stackoverflow.com/questions/36730793/can-i-dispatch-an-action-in-reducer

Sunday, June 20, 2021

blog.microideation.com

https://blog.microideation.com/

Thursday, June 17, 2021

A new children's book / illustrated guide to Apache Kafka

https://www.gentlydownthe.stream/

Memoize Commands or Bash Functions with Coprocs

https://mbuki-mvuki.org/posts/2021-05-30-memoize-commands-or-bash-functions-with-coprocs/

Wednesday, June 16, 2021

Disasters I've seen in a microservices world

https://world.hey.com/joaoqalves/disasters-i-ve-seen-in-a-microservices-world-a9137a51

Stock Market APIs

https://kush01.hashnode.dev/top-stock-market-apis

Tuesday, June 15, 2021

Nerves device as an IP Camera?

https://elixirforum.com/t/nerves-device-as-an-ip-camera/19526

BUILDING A HOME SECURITY SYSTEM WITH ELIXIR AND NERVES by Arto Bendiken

https://ar.to/2019/02/talk-at-pivorak-conf-2

CCTV Security Camera 1080p Night Vision WiFi & IP66 Unboxing in Telugu

(Free) Machine Learning crash course from Google

https://developers.google.com/machine-learning/crash-course/

Drone Programming With Python Course | 3 Hours | Including x4 Projects | Computer Vision

Don't Buy Security Camera! Build Your Own || Computer Vision || Open cv tutorial || python project

Sunday, June 13, 2021

increment.com - General Trends in Software Industry

https://increment.com/issues/

codesdope.com

https://www.codesdope.com/course/algorithms-introduction/

https://www.codesdope.com/course/data-structures-introduction/

Quantum Communications - Dual band stabilization

https://www.zdnet.com/article/researchers-created-an-un-hackable-quantum-network-over-hundreds-of-kilometers-using-optical-fiber/

Excerpt:

To tackle the instable conditions inside optical fibers, Toshiba's researchers developed a new technique called "dual band stabilization". The method sends two signals down the optical fiber at different wavelengths. The first wavelength is used to cancel out rapidly varying fluctuations, while the second wavelength, which is at the same wavelength as the qubits, is used for finer adjustments of the phase.
Put simply, the two wavelengths combine to cancel environmental fluctuations inside the fiber in real time, which according to Toshiba's researchers, enabled qubits to travel safely over 600 kilometers.

Already, the company's team has used the technology to trial one of the most well-known applications of quantum networks: quantum-based encryption.
Known as Quantum Key Distribution (QKD), the protocol leverages quantum networks to create security keys that are impossible to hack, meaning that users can securely exchange confidential information, like bank statements or health records, over an untrusted communication channel such as the internet.

kalkicode.com - DSA practice website

https://kalkicode.com/

Do You Really Need Redis? How to Get Away with Just PostgreSQL

https://spin.atomicobject.com/2021/02/04/redis-postgresql/

Saturday, June 12, 2021

Priority Queue Using Heap

https://www.codesdope.com/blog/article/priority-queue-using-heap/

https://www.codesdope.com/course/algorithms-introduction/

https://www.codesdope.com/course/data-structures-introduction/

http://web.eecs.utk.edu/~leparker/Courses/CS302-Fall06/Lecture_notes/09-26-Priority-queues-1.pdf

https://sites.fas.harvard.edu/~libs111/files/lectures/unit9-3.pdf

mocki.io - create fake json API

https://mocki.io/

Designing Software with Predicate Logic

https://buttondown.email/hillelwayne/archive/designing-software-with-predicate-logic/

Wormhole: Instant Encrypted File-Sharing Powered by WebTorrent

https://torrentfreak.com/wormhole-instant-encrypted-file-sharing-powered-by-webtorrent-210611/

https://torrentfreak.com/webtorrent-brings-bittorrent-to-the-web-impresses-netflix-151213/

Good and Bad Elixir

https://keathley.io/blog/good-and-bad-elixir.html

glitch.com - online IDE

https://glitch.com/

Hash.ai - where models and simulations live

https://hash.ai/index

Wednesday, June 9, 2021

Redux related

Memoized Selectors

https://www.reddit.com/r/reduxjs/comments/ns2gh5/memoized_selectors/

shallowEqual:

https://www.reddit.com/r/reduxjs/comments/n65lig/destructuring_useselector_or_not/

Wednesday, June 2, 2021

singularityhub.com/, reddit.com/r/Futurology/

https://singularityhub.com/

https://www.reddit.com/r/Futurology/

A Self-Driving Truck Got a Shipment Cross-Country 10 Hours Faster Than a Human Driver

https://singularityhub.com/2021/06/01/a-driverless-truck-took-a-load-of-watermelons-cross-country-42-faster-than-a-human-driver/

Monday, May 31, 2021

De-fragmenting your brain

https://kristiandupont.medium.com/you-should-meditate-but-you-already-knew-that-e694f6f04dcf

M1 dev setup with a virtual Linux box

https://gopensource.com/m1-dev-setup-with-a-virtual-linux-box-1a2688231667

https://kristiandupont.medium.com/

Tailwind CSS - css utility classes

https://adamwathan.me/css-utility-classes-and-separation-of-concerns/

Introduction to React Testing

https://javascript.works-hub.com/learn/react-testing-a-beginners-intro-a9533?utm_source=reddit&utm_medium=affiliates&utm_campaign=javascriptworks-blogpost

Saturday, May 29, 2021

A complete computer science study plan to become a software engineer

https://github.com/jwasham/coding-interview-university

Create a cryptocurrency trading bot in Elixir

https://www.elixircryptobot.com

https://www.youtube.com/watch?v=wVYIx7M6o28&list=PLxsE19GnjC5Nv1CbeKOiS5YqGqw35aZFJ

Tuesday, May 18, 2021

Circular Progress Bar

https://tiagobalmeida.github.io/posts/making-a-pure-css-circular-progress-bar.html

https://codepen.io/theacadian/pen/mdWrGyX

Wednesday, May 12, 2021

Creating Virtual Reality using WebXR and HTML

http://www.primaryobjects.com/2021/05/10/creating-virtual-reality-using-webxr/

Learn CSS Grid

https://www.youtube.com/watch?v=zhhZDKhK-NU

Monday, May 10, 2021

Understanding Docker: part 32 – Networks

https://dev.to/aurelievache/understanding-docker-part-32-networks-38gj

Building a Distributed Turn-Based Game System in Elixir

https://fly.io/blog/building-a-distributed-turn-based-game-system-in-elixir/

Monday, May 3, 2021

Binance Trading Bot | Built With React.Js

https://www.asquero.com/project/binance-trading-bot-built-with-reactjs-6XuWg0KC/

https://github.com/chrisleekr/binance-trading-bot

Ruby Schedulers: Whenever vs Sidekiq Cron vs Sidekiq Scheduler

https://medium.com/serpapi/ruby-schedulers-whenever-vs-sidekiq-cron-vs-sidekiq-scheduler-b229d7ca5256

Stack on a budget (Free Tier Driven Development FTDD)

https://github.com/255kb/stack-on-a-budget

Saturday, May 1, 2021

Youtube channel for learning different things

https://www.youtube.com/c/HusseinNasser-software-engineering/videos?app=desktop&view=0&sort=da&flow=grid

Friday, April 30, 2021

Low Level Design related

https://shashibhushankr.medium.com/cracking-the-low-level-design-lld-interview-4e02b3b555e2

Sunday, April 25, 2021

Become A DevOps Engineer in 2021: A Comprehensive Guide

https://devopscube.com/become-devops-engineer

Saturday, April 24, 2021

Go vs Elixir

https://preslav.me/2021/04/23/between-golang-and-elixir/

React Native - News app

https://youtu.be/zqADgkPiT1g

Saturday, April 17, 2021

Supabase with Ionic

https://buff.ly/32kmfr7

A Guide to Flexbox

https://css-tricks.com/snippets/css/a-guide-to-flexbox/

Tuesday, April 13, 2021

Retargeting

https://onesignal.com/blog/retargeting/

Why some developers are avoiding app store headaches by going web-only

https://www.fastcompany.com/90623905/ios-web-apps

Saturday, April 10, 2021

Building Git in Elixir

https://itnext.io/building-git-in-elixir-part-1-2f2ec245df74

Liveview example

https://twitter.com/mrkurt/status/1380517985606057986?s=21

https://liveview-counter.fly.dev/

https://github.com/fly-apps/phoenix-liveview-cluster

Ionic React - Banking UI

https://ionicreacthub.com/ionic-react-banking-ui

https://github.com/alanmontgomery/ionic-banking-ui

Wednesday, April 7, 2021

Programming/Data Structures - Nested Data Structure Traversal

https://github.com/josevalim/nested-data-structure-traversal

Tuesday, April 6, 2021

Json-Function - Lets you use where, limit, select, orderBy, and more in JSON data.

https://github.com/aykutkardas/Json-Function

Sandbox for Mac

https://github.com/lynaghk/sandboxtron

React - React Stack 2021

https://dev.to/mondal10/react-stack-2021-4h8l

Monday, April 5, 2021

Learning Elixir, Phoenix and LiveView: A Primer for Experienced Programmers

https://amattn.com/p/learning_elixir_phoenix_and_liveview_a_primer_for_experienced_programmers.html?utm_source=elixirdigest&utm_medium=web&utm_campaign=301

React - Ways of getting data from API

https://dev.to/olenadrugalya/ways-of-getting-data-from-api-in-react-2kpf

React + D3.js

https://twitter.com/reactnewsletter/status/1379114124894953475?s=21

https://wattenberger.com/blog/react-and-d3

Sunday, April 4, 2021

Ionic React - Facebook Clone

https://twitter.com/93alan/status/1378943233896673286?s=21

https://github.com/alanmontgomery/ionic-facebook-clone

Friday, April 2, 2021

Ionic React related - ionic-react-marvel-app

https://twitter.com/93alan/status/1375433375662624777?s=21

https://github.com/alanmontgomery/ionic-react-marvel-app

Sunday, March 28, 2021

SQL, NoSQL, and Scale: How DynamoDB scales where relational databases don't

https://www.alexdebrie.com/posts/dynamodb-no-bad-queries/

Getting better at UI/UX as a Developer

https://twitter.com/katherinecodes/status/1375928023044648962?s=21

Association Defaults in Ecto (Designing secure and scalable multi-tenant applications in Elixir)

https://twitter.com/slab/status/1375128887538057217?s=21

https://slab.com/blog/association-defaults-in-ecto/

An Elixir client for the Nu HTML Checker (v.Nu).

https://github.com/angelikatyborska/vnu-elixir

v.Nu is a document validity checker used by the W3C. It offers validating HTML, CSS, and SVG documents.

This library brings that functionality to Elixir by using the Checker's JSON API. It offers ExUnit assertions for validating dynamic content in tests, Mix tasks for validating static content, and general purpose functions to fulfill other needs.