DPS909 & OSD600 Winter 2019

Week 1

• Course introduction
  • DPS909
  • OSD600
  • How to be successful in this course

• Releases
  • 4 releases, some with multiple bugs/PRs required
  • Chance to work on real code, real projects
  • Big learning curve, lots of time required
  • Amazing chance to gain experience, network, build your skills and resume

• Discussion/Readings
  • Copyright (Copyright in Canada video)
    • https://twitter.com/stan_sdcollins/status/1079395470731030528
    • IANAL
    • 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)

• What is Open Source?
  • The Open Source Definition
  • Microsoft buys GitHub for 7.5 Billion - "We're all in on open source"
    • https://twitter.com/asynchio/status/1082702841964244992
  • Julia Evans, "How to teach yourself hard things"

• Slack
  • https://seneca-open-source.slack.com
  • Slack, Getting Started
  • Tour the Slack app

• First open technologies and projects we'll be using:
  • node.js
  • node fs module docs
  • filer
  • mocha

Week 2

• Release 0.1 Overview
  • Due Wed Jan 30th
  • node fs module vs. filer

• 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

• BSD License
  • 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

• Open Source and Code Reading
  • truncate
    • echo "data" > file
    • > file
  • fs.truncate()
    • docs
    • JS src
    • libuv docs
    • POSIX C src
      • Uses ftruncate() system call
    • Windows C src
      • Uses NtSetInformationFile() system call
    • Filer source for truncate
  • A great blog doing something similar: Deep Dive on the node fs module and fs.access() by Safia Abdalla

• Lab 1