Go for .NET Developers

These are the presentation slides I created for the talk I gave at the Adelaide .NET User Group on 8th December 2021.

https://www.meetup.com/en-AU/Adelaide-dotNET/events/282173557/

Transcript

1. GO FOR .NET DEVELOPERS
   Sahan Serasinghe
   @_SahanSera
   

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2. AGENDA
   01
   The What &
   Why 02
   Tooling 03
   Basic
   language
   constructs
   04
   Unit testing
   05
   Building a
   HTTP Web
   Service
   06
   Multi-Arch
   Deployments Resources
   

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3. $ WHOAMI
   Sahan Serasinghe
   Software Engineer | GitHub
   Twitter: _SahanSera
   Blog: sahansera.dev
   {
   

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4. CODE SAMPLES
   /sahansera/adnug-go
   

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5. DISCLAIMER
   This is not to say that one
   language is superior to another
   These are just tools and not
   solutions
   I’m not a “Go” expert
   

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6. WHAT IS GO?
   

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7. GO
   Developed by Google in 2009
   Released to the public in 2011
   Strongly typed, compiled, garbage collected language
   Current version is 1.17 and 1.18 will be released in early
   2022
   

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8. Ken Thompson
   Rob Pike
   Robert Griesemer
   

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9. GO IS BUILT WITH VERY SPECIFIC THINGS IN MIND
   speed of execution
   speed of compilation
   dependency management
   to concurrency and optimization
   

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10. GOOGLE’S DESIGN GOALS FOR GO
    Create a compiler that
    works on large
    codebases as fast as
    possible
    Create a compiler that
    generates fast code
    using a good set of
    optimizations
    

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11. GO’S PHILOSOPHY
    Keep it simple
    • Keywords C# ~100 vs Go – 25
    Consistency
    • gofmt – Tabs vs Spaces
    Opinionated
    • Unused vars are a compiler errors
    

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12. GO & C# - AT
    A GLANCE
    No classes = No inheritance
    No try/catch
    No generics (yet)
    No LINQ
    No Semicolons to end lines
    

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13. WHY SHOULD YOU CARE ABOUT
    GO?
    

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14. Software Engineers
    Site
    Reliability
    Engineers
    SecOps
    Engineers
    Network
    Engineers
    

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15. OTHER COOL
    BITS…
    •No need to manage runtimes on the
    deployment environment
    •Popular projects in the cloud native
    world
    

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16. TOOLING
    

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17. INSTALLING
    GO
    go.dev
    

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18. GO TOOLING
    Go SDK
    Go CLI
    • go run
    • go build
    • go get
    • go vet
    • gofmt
    IDEs
    • VS Code, GoLand, VIM
    

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19. SO, WHERE’S THE CODE?
    

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20. YOUR FIRST GO PROGRAM
    DEMO
    

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21. AN OVERVIEW
    GO C#
    

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22. SYNTAX
    DEMO
    

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23. BASIC
    CONSTRUCTS
    • Variables
    • Packages/imports/modules
    • Slices & Loops
    • Conditionals
    • Functions
    • Structs
    • Pointers
    

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24. LIVE CODING
    TIME
    

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25. UNIT TESTING
    •Built-in testing commands
    • go test [-bench] [-cover]
    • package testing
    •No assertions library
    

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26. PROJECT STRUCTURE
    /cmd – Entrypoint(s) of the application
    /internal – Private application & library code
    /pkg – Library code visible to others
    /vendor – Application dependencies
    ⚠ if you are starting out, this is probably an overkill
    https://github.com/golang-standards/project-layout
    

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27. BUILDING A HTTP WEB SERVICE + JSON
    DEMO
    

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28. SIMPLE WEB SERVICE WITH GO & C#
    GO C#
    

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29. MULTI ARCH DEPLOYMENTS
    DEMO
    

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30. MORE COOL
    STUFF?
    Goroutines
    GopherJS
    GoNum
    TinyGo
    

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32. RESOURCES
    • https://gobyexample.com/
    • https://go.dev/doc/effective_go
    • https://github.com/golang-standards/project-layout
    • https://github.com/avelino/awesome-go
    

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33. THANK YOU!
    

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34. QUESTIONS?
    

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