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Building CS50 on GitHub

Avatar for CS50 CS50
October 11, 2017
Education
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1

Building CS50 on GitHub

Avatar for CS50

CS50

October 11, 2017

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Transcript

  1. Building CS50 on GitHub David J. Malan [email protected] slides at

    cs50.ly/universe17
  2. None

  3. This is CS50 • CS50 ◦ 800 students at Harvard,

    200 students at Yale • CS50x ◦ 1M registrants online • CS50 AP ◦ 150 high schools, 5,000 students
  4. None

  5. Problems Past • Developing apps • Deploying apps • Hosting

    docs • ...

  6. Problems Present 1. Students do work. 2. Students submit work.

    3. Teaching fellows review work.

  7. Team • Brian Yu • Chad Sharp • Hailey James

    • Kareem Zidane

  8. Team • Brian Yu • Chad Sharp • Hailey James

    • Kareem Zidane

  9. Solutions 1. Students do work. 2. Students submit work. 3.

    Teaching fellows review work.

  10. Solutions 1. Students do work. Homegrown tool. 2. Students submit

    work. 3. Teaching fellows review work.

  11. Solutions 1. Students do work. Homegrown tool. 2. Students submit

    work. Homegrown tool. 3. Teaching fellows review work.

  12. Solutions 1. Students do work. Homegrown tool. 2. Students submit

    work. Homegrown tool. 3. Teaching fellows review work. Homegrown tool.

  13. Solutions

  14. Solutions 1. Homegrown tool

  15. Solutions 1. Homegrown tool 2. Improved homegrown tool

  16. Solutions 1. Homegrown tool 2. Improved homegrown tool 3. New

    homegrown tool

  17. Solutions 1. Homegrown tool 2. Improved homegrown tool 3. New

    homegrown tool 4. New-and-improved homegrown tool

  18. Solutions 1. Homegrown tool 2. Improved homegrown tool 3. New

    homegrown tool 4. New-and-improved homegrown tool 5. GitHub

  19. Solutions 1. Homegrown tool 2. Improved homegrown tool 3. New

    homegrown tool 4. New-and-improved homegrown tool 5. GitHub + homegrown tool

  20. Solutions 1. Homegrown tool 2. Improved homegrown tool 3. New

    homegrown tool 4. New-and-improved homegrown tool 5. GitHub + homegrown tool

  21. Solutions 1. Homegrown tool 2. Improved homegrown tool 3. New

    homegrown tool 4. New-and-improved homegrown tool 5. GitHub + Docker

  22. Doing Work 1. ice.harvard.edu

  23. Doing Work 1. ice.harvard.edu 2. nice.harvard.edu

  24. Doing Work 1. ice.harvard.edu 2. nice.harvard.edu 3. cloud.cs50.net

  25. Doing Work 1. ice.harvard.edu 2. nice.harvard.edu 3. cloud.cs50.net 4. CS50

    Appliance

  26. Doing Work 1. ice.harvard.edu 2. nice.harvard.edu 3. cloud.cs50.net 4. CS50

    Appliance 5. CS50 IDE

  27. Submitting Work

  28. Submitting Work 1. submit

  29. Submitting Work 1. submit 2. cs50submit

  30. Submitting Work 1. submit 2. cs50submit 3. GitHub:FI

  31. Submitting Work 1. submit 2. cs50submit 3. GitHub:FI 4. CS50

    Submit with CLI

  32. Submitting Work 1. submit 2. cs50submit 3. GitHub:FI 4. CS50

    Submit with CLI 5. CS50 Submit with GUI

  33. Submitting Work 1. submit 2. cs50submit 3. GitHub:FI 4. CS50

    Submit with CLI 5. CS50 Submit with GUI 6. submit50

  34. Submitting Work 1. submit 2. cs50submit 3. GitHub:FI 4. CS50

    Submit with CLI 5. CS50 Submit with GUI 6. GitHub

  35. Submitting Work 1. submit 2. cs50submit 3. GitHub:FI 4. CS50

    Submit with CLI 5. CS50 Submit with GUI 6. GitHub 7. GitHub + Docker

  36. Reviewing Work

  37. Reviewing Work 1. Paper

  38. Reviewing Work 1. Paper 2. PDF

  39. Reviewing Work 1. Paper 2. PDF 3. CS50 Submit

  40. Reviewing Work

  41. Reviewing Work 1. Paper 2. PDF 3. CS50 Submit 4.

    GitHub.com

  42. Reviewing Work 1. Paper 2. PDF 3. CS50 Submit 4.

    GitHub.com 5. GitHub.com + homegrown tool 0:-)

  43. Why • Client • Server • UI for code review

    • Permissions model ◦ CS50 ◦ CS50x ◦ CS50 AP • Post-commit hooks • ...

  44. How • Gists? • Pull Requests? • GitHub Classroom? •

    Commits?
  45. None
  46. None
  47. None
  48. None

  49. What • Client • Server • UI for code review

    • Permissions model ◦ CS50 ◦ CS50x ◦ CS50 AP • Post-commit hooks • ...
  50. None

  51. education.github.com

  52. None

  53. How • Repo per project? • Branch per project?

  54. None
  55. None

  56. github.com/cs50/submit50

  57. None
  58. None
  59. None
  60. None
  61. None
  62. None
  63. None

  64. Submitting • git add --all • git commit --allow-empty --message

    • git push origin refs/heads/hello

  65. Resubmitting • git clone --bare hello /tmp • git symbolic-ref

    HEAD refs/heads/hello • git add --all • git commit --allow-empty --message • git push origin refs/heads/hello

  66. developer.github.com/v3/repos/

  67. None
  68. None
  69. None
  70. None
  71. None
  72. None
  73. None
  74. None
  75. None
  76. None

  77. Tagging • git clone • git checkout refs/heads/hello • git

    commit-tree HEAD^{tree} -m 20171011T230000Z • git push origin refs/tags/20171011T230000Z

  78. github.com/cs50/check50

  79. Autograding • git clone • git checkout refs/tags/20171011T230000Z • check50

  80. hub.docker.com/r/cs50/

  81. docker.com

  82. docker.com

  83. aws.amazon.com/ecs/

  84. GitHub + Docker 1. Student pushes code to GitHub 2.

    Post-receive hook informs CS50 of submission 3. CS50 informs ECS of submission 4. ECS clones repo, autogrades branch 5. ECS informs CS50 of scores
  85. None
  86. None
  87. None

  88. tl;dr • CS50 at cs50.edx.org • CS50 IDE at cs50.io

    • submit50 at github.com/cs50/submit50 • check50 at github.com/cs50/check50 • Slides at cs50.ly/universe17

  89. Building CS50 on GitHub David J. Malan [email protected] slides at

    cs50.ly/universe17