Sharing Code With Open Source

Presented on July 10th 2017 at Civic Hall

Transcript

1. #JUSTVENMOME:
   SHARING CODE
   WITH OPEN
   SOURCE
   twitter @dasmersingh
   

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2. My Background - Before Venmo
   Graduated from
   Columbia
   Engineering
   Started at
   JP Morgan
   Left JP
   Morgan
   Learned iOS Development +
   Released 6 apps in the App Store
   Started as
   an iOS
   Engineer at
   Venmo
   May 2013 June 2013 August 2013 February 2014
   

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3. My Background - At Venmo
   iOS
   Engineer
   February 2014
   July 2016
   Product
   Manager
   January 2016
   Strategy
   Associate
   Completed the
   Flatiron School iOS
   Bootcamp
   December 2013
   

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4. My Background - At Venmo
   

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5. My Background - After Venmo
   Full-time Student at the
   Stanford Graduate School
   of Business
   September 2017 ???
   Start a Company / Join an
   Early Stage Startup
   

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6. Agenda
   ● What is Open Source?
   ● Venmo’s Open Source Projects
   ● How to leverage Venmo in your apps
   

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7. What is Open Source?
   

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8. Open Source
   Definition: denoting software for which the original source code is made freely
   available and may be redistributed and modified
   

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9. ● Most popular open source projects
   are hosted on Github.com
   ● Enables programmers to
   ○ Star
   ○ Fork
   ○ Pull Request
   ● Engineers can track, collaborate on,
   and see each other’s coding activity
   

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10. Trending iOS Open Source Projects
    https://github.com/trending/swift
    

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11. ● It’s free
    ● You don’t have to reinvent the wheel
    ● Minimizes room for error
    ● Engineers learn from other people’s
    code
    Why use other Open Source projects?
    

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12. ● Incentivizes engineers to write better quality code
    ● Leads to better engineering hires
    Why Contribute to Open Source?
    

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13. Open Source Code tends to be easier to read
    ● Clean
    ● Well Documented
    Quality Code
    

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14. Open Source Code tends to be modular
    ● Separation of Concerns
    ● Independent
    ● Contained
    Spaghetti vs Modular Code
    Quality Code
    

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15. Open Source Code tends to be more
    optimized for performance
    Quality Code
    

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16. Open Source Code tends to be unit tested
    Quality Code
    

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17. ● Find engineers that are passionate about the work you do
    ● Assess skill level by observing their contribution and collaboration styles
    Better Engineering Hires
    

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18. Venmo’s Open Source
    Projects
    

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19. Questions Venmo asks before open
    sourcing a project
    1. Is it general enough for other companies or apps to use?
    2. Is its business logic not proprietary (i.e. risk + fraud rules)?
    3. Do our team have the time and bandwidth to open source this now?
    If all of the above are “yes”, we’ll open source it.
    

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20. Touch ID & Passcode
    ● Secures any app
    ● Used in the Venmo App
    ● Adopted by
    ○ Tumblr
    ○ ZocDoc
    ○ Many others
    ● Has more than 45,000+ total
    downloads
    github.com/venmo/VENTouchLock
    

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21. Calculator Keyboard
    ● Add a calculator keyboard to your app
    ● Used in Venmo
    ● Has more than 7,000+ total downloads
    github.com/venmo/VENCalculatorInputView
    

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22. Look familiar?
    app
    

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23. Token Field
    ● Add a multiple recipient field to your app
    ● Used in Venmo
    ● Has more than 8,500+ total downloads
    github.com/venmo/VENTokenField
    

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24. Other Notable Venmo Open Source
    Repositories
    Name URL: http://github.com Watcher, Star, and Fork Counts
    /synx
    /slather
    /static
    DVR /dvr
    

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25. Open Source Projects the Venmo iPhone
    App Uses
    1. FacebookSDK
    2. FastImageCache
    3. FLAnimatedImage
    4. GZIP
    5. NYTPhotoViewer
    6. OnePassword-AppExtension
    7. SAMKeychain
    

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26. How to leverage Venmo in
    your own apps
    

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27. 1. Use our open source projects
    To see them all, go to github.com/venmo
    

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28. Imagine you want to:
    Charge “Dasmer” $10 with note
    “delicious ” in a public
    payment.
    Go to URL:
    https://venmo.com/dasmer?txn=charge&amount=10.00
    &note=delicious%20 &audience=public
    2. Use Payment Links
    iOS or Android user will
    be redirected to Venmo
    app with screen:
    

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29. 3. Sign up for Venmo Purchases
    1. Accept Venmo purchases in your own apps
    2. Let friends split and share their purchases on the Venmo feed
    3. Enable your customers to use their Venmo balance to pay for your goods
    and services
    

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30. 3. Sign up for Venmo Purchases
    Demo
    

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31. 3. Sign up for Venmo Purchases
    Existing Partners
    For more information, check out venmo.com/business
    

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32. Summary
    ● What is Open Source?
    ● Venmo’s Open Source Projects
    ● How to leverage Venmo in your apps
    

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33. Open-Ended Group Discussion
    Follow me on Twitter @dasmersingh
    

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