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
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
3. $ WHOAMI Sahan Serasinghe Software Engineer | GitHub Twitter: _SahanSera Blog: sahansera.dev {
4. CODE SAMPLES /sahansera/adnug-go
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
6. WHAT IS GO?
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
8. Ken Thompson Rob Pike Robert Griesemer
9. GO IS BUILT WITH VERY SPECIFIC THINGS IN MIND speed of execution speed of compilation dependency management to concurrency and optimization
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
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
12. GO & C# - AT A GLANCE No classes = No inheritance No try/catch No generics (yet) No LINQ No Semicolons to end lines
13. WHY SHOULD YOU CARE ABOUT GO?
14. Software Engineers Site Reliability Engineers SecOps Engineers Network Engineers
15. OTHER COOL BITS… •No need to manage runtimes on the deployment environment •Popular projects in the cloud native world
16. TOOLING
17. INSTALLING GO go.dev
18. GO TOOLING Go SDK Go CLI • go run • go build • go get • go vet • gofmt IDEs • VS Code, GoLand, VIM
19. SO, WHERE’S THE CODE?
20. YOUR FIRST GO PROGRAM DEMO
21. AN OVERVIEW GO C#
22. SYNTAX DEMO
23. BASIC CONSTRUCTS • Variables • Packages/imports/modules • Slices & Loops • Conditionals • Functions • Structs • Pointers
24. LIVE CODING TIME
25. UNIT TESTING •Built-in testing commands • go test [-bench] [-cover] • package testing •No assertions library
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
27. BUILDING A HTTP WEB SERVICE + JSON DEMO
28. SIMPLE WEB SERVICE WITH GO & C# GO C#
29. MULTI ARCH DEPLOYMENTS DEMO
30. MORE COOL STUFF? Goroutines GopherJS GoNum TinyGo
32. RESOURCES • https://gobyexample.com/ • https://go.dev/doc/effective_go • https://github.com/golang-standards/project-layout • https://github.com/avelino/awesome-go
33. THANK YOU!
34. QUESTIONS?