DPS909 & OSD600 Winter 2018

Week 1

• Course introduction
  • DPS909
  • OSD600

• Some questions:
  • When you hear "open source," what comes to mind?
  • On a scale from 1 (not at all) to 5 (very)...
    • How comfortable are you working with technology you've never seen before?
    • How curious are you about how things work?
    • How likely are you to stick with a problem when it gets hard to solve?
    • How likely are you to ask for help when you get stuck?
    • How likely are you to pause your own work in order to help someone else who is stuck?
    • How self-motivated are you?
    • How self-directed are you?

• How to have Success in this course:
  • Willingness to be lost and not panic
  • Willingness to put yourself out there, jump in
  • Curiosity
  • Being driven, persistence
  • Willingness to ask for help
  • Willingness to give others help
  • Independent learning
  • Doing more than the bare minimum

• Discussion
  • Open Source Turns 20
  • Move Over Bay Street: Toronto's Burgeoning Tech Scene Is Taking Over
  • Open source professionals are more in demand than ever
  • How to get an open source job

• Let's talk about Copyright and Open Source Licenses
  • • IANAL: "I Am Not A Lawyer"
    • We're going to explore licensing from the POV of a developer participating in open projects

• Copyright (Copyright in Canada video)
  • Who created it, "owns" it.
  • Set of exclusive rights granted to the work's creator
  • "The right to copy," to produce or reproduce a work or substantial portion thereof
  • Copyright is automatic when a work is created, you don't have to register it.
  • Copyright in Canada
  • Copyright Guide
  • In a software project, there can be many copyright holders (e.g., many contributors), or all contributors may assign their copyright to the project (e.g., CLA, which we'll cover later)

Week 2

• Licenses
  • Rights, privileges, responsibilities, etc. applicable to someone other than the work's creator
  • "Terms and Conditions"
  • These must be granted by a copyright holder

• No License
  • What can you do with code you find that has no license?
  • what can I, can't I do?

• Public Domain
  • SQLite, which is now used by literally everybody, see http://www.sqlite.org/famous.html
  • Unlicense

• Consider some proprietary/closed End User License Agreements (EULA)
  • Richard Dreyfuss reads the iTunes EULA
    • Part 1: Please Read (.mp3)
    • Part 2: Responsibility (.mp3)
    • Part 3: Damages (.mp3)
    • Part 4: Effective Until (.mp3)
  • Spotify EULA

• Open Source Licenses
  • The Open Source Definition
  • Approved licenses by the Open Source Initiative: https://opensource.org/licenses
  • Choose a License: https://choosealicense.com/

• Learning Licenses: BSD
  • Family of Licenses, including 2-Clause BSD, 3-Clause BSD (aka New BDS), 4-Clause BSD
  • "Why you should use a BSD style license for your Open Source Project"
  • BSD Licenses code is usually compatible with other open/closed code, when you want to mix them.
  • Example software projects licensed under the BSD License:
    • Many Google Projects, including V8, Chromium, Go
    • D3.js
    • Django
    • nginx
    • Vi
    • Facebook uses a modified version of the 3-Clause BSD they call [BSD + Patents license]. This has been controversial
      • BSD + Patent
      • PATENTS in React
      • https://code.facebook.com/posts/112130496157735/explaining-react-s-license/
  • Summary:
    • You need to retain the license and copyright notice
    • You can use it commercially or non-commercially (privately)
    • You can distribute it freely
    • You can modify it freely

• Lab 1

Week 3

• TODO:
  • Finish Lab 1
  • Complete Release 0.1 Part A
  • Start Learning Git, GitHub

• Source Code Reading: by reading code we didn't write, we often learn things we didn't know were possible.
  • Consider libphonenumber's Leniency type and Constant-Specific Methods in Java. ENUMs can define an abstract method and override them with a concrete method in each constant
    • C++ impl
    • Java impl
  • Consider \p{...} Unicode categories in Regex
    • https://mothereff.in/regexpu
    • https://en.wikipedia.org/wiki/Unicode_character_property
    • /\p{Sc}/u; becomes /[\$\xA2-\xA5\u058F\u060B\u09F2\u09F3\u09FB\u0AF1\u0BF9\u0E3F\u17DB\u20A0-\u20BF\uA838\uFDFC\uFE69\uFF04\uFFE0\uFFE1\uFFE5\uFFE6]/;
  • Tips for reading new codebases (blog post by Safia Abdalla)

• Introducing git
  • Git Walkthrough - Basics

• Readings/Resources
  • Courses on Lynda
    • Git Essential Training
    • Up and Running with Git and GitHub
  • Books
    • Pro Git
    • Version Control by Example, online book
  • References
    • Git Reference
    • Visual Git Reference
    • Overview of Git Tutorials (many good ones)
    • Github documentation
    • GitHub Desktop

Week 4

• Learning Licenses: MIT
  • MIT License
  • The MIT License, Line by Line
  • One of the most widely used licenses in Open Source
  • Like the BSD License, nothing about patents (created before software was patentable in the US)
  • Example software projects licensed under the BSD License:
    • ExpressJS
    • Ruby on Rails
    • A-Frame
    • AngularJS
    • Atom, Electron
    • Bootstrap
    • Brackets
    • jQuery
    • node.js
    • Phaser
    • PuTTY
    • Socket.IO

• More Git
  • Continued Git Walkthrough
  • Git Walkthrough 2
  • Keeping up-to-date:
    • Remotes
    • pull vs. fetch

• Lab 2

Week 5, 6

• Fixing a bug in VSCode
  • https://github.com/Microsoft/vscode/wiki/How-to-Contribute for instructions on building, running vscode
  • https://github.com/Microsoft/vscode/issues/42726
  • https://github.com/humphd/vscode/tree/good-first-experience-issue-42726#walkthrough-fixing-a-bug-in-visual-studio-code
  • https://developers.google.com/web/tools/chrome-devtools/ for tips on using the Developer Tools

• Lab 3
• Release 0.2

Week 8

• Guest: David Bruant

• Open Data, Open Standards, Open Soure
• Building a Business on Open?
• Open Standards: ECMAScript and WHATWG, W3C
• How and Why to Read a Standard: example URL()
• Participation in Standards Processes: maintenance (e.g., docs, correcting things) and evolution (e.g., adding new aspects, standardizing ad hoc things)
• Case studies: iframe @sandbox "parallizable"
• Comparing “big” vs. “small” contribution: working on standards is about as big as it gets.

• Discussion open source (and technology in general) as it exists in Europe vs North America, trends, opportunities, etc.

• TODO
  • More on Open Standards
  • Lab 4
  • Get started on Release 0.2

Week 9

• Modern JS
  • https://developer.mozilla.org/en-US/docs/Web/JavaScript
  • https://nodejs.org/api/
  • http://exploringjs.com/es6.html
  • https://eloquentjavascript.net/
  • http://exploringjs.com/es2018-es2019/

• Learning Front-End and Open Source Collaboration, Case Study Part I
  • https://github.com/humphd/bridge-troll
  • https://www.ontario.ca/data/bridge-conditions
  • https://www.npmjs.com/
  • https://babeljs.io/
  • https://eslint.org/
  • https://prettier.io/
  • https://parceljs.org/
  • http://editorconfig.org/

• TODO
  • Lab 5
  • Continue working on Release 0.2

Week 10

• Testing
  • Unit Tests
  • Regression Tests
  • Performance Tests
  • Integration Tests
  • Fuzz Tests
  • Stress/Load Tests
  • Smoke Tests

• JavaScript Testing Examples
  • https://medium.com/welldone-software/an-overview-of-javascript-testing-in-2018-f68950900bc3
  • Frameworks - mocha, jest
  • Assertions - chai, Jest expect
  • Test Runners - karma
  • Browser Environments - Puppeteer, jsdom
  • Code Coverage - istanbul

• Continuous Integration
  • Most are free for Open Source projects
  • Travis CI
  • AppVeyor
  • CircleCI
  • Example in VSCode https://github.com/Microsoft/vscode/pull/46117

• • Writing tests in Bridge Troll

Week 11

• Case Study: Fixing a bug in Brave
• Read other students' open source experience fixing bugs for 0.2. Lots of great stories, lessons.
  • Lab 6