A tech talk on Golang nuts, delivered by Nii Nai at DevCongress 2013.

1. Golang-nuts
Nii Nai
Esoko

2. Introduction

3. Who?
Rob Pike
Robert Griesemer
Ken Thompson

4. What is Go?
Unix philosophy + Systems Language
= Statically-typed language that feels dynamic,
reads simple and is clean

5. Axioms

6. Simple
Clean, concise syntax. Lightweight type system
makes for fun.
Have your cake and eat it. Who says you can't?

7. Orthogonal
A few orthogonal features works better than a
lot of overlapping ones.
No bloat.

8. Readable
Source code should make sense with little
context.

9. Fast builds
Achieves really fast build time by explicitly
specifying dependencies.

10. Features

11. ● Statically-typed
● Compiled
● Type-safe and memory-safe
● Garbage collected
● Concurrent from inception
● Built for the web
● Support for functional programming
● Object oriented
● Explicit dependency

12. Demo: hello world

13. I Loves

14. Simple type system
Go is statically-typed, but inference saves a lot
of repetition.

15. Date
Working with dates was a different and awe
inspiring experience.
Talk about simple
All you have to do:
● specify incoming format
● call Parse

16. Multiple returns
Used heavily in the go standard library to return
error states for error checking.

17. Packaging
Go code lives in packages.
Packages contain type, function, variable, and
constant declarations.
Case determines visibility: Foo is exported, foo
is not.

18. Duck typing
Walks like a duck and swims like a duck and
quacks like a duck, I call that a duck.

19. Stuttering ...
I don’t miss this, not at all.

20. argsv
Working with command line arguments just got
easy.

21. Concurrency primitives
*nix:
find ~/sources/weather | grep loc.go | xargs wc
-l
Go equivalent:
goroutines connected by channels
Philosophy:
“Don’t communicate by sharing memory.
Instead, share memory by communicating.”

22. Killer tools
● gofmt
● godoc
● present
● play
● go get
● gofix

23. Eccentric
Simply put idol worshipping on my part.

24. And Go has pointers

25. Esoko & Go

26. Weather
Our weather forecast service powered by Go.

27. Check_sms
A nagios plugin to check for delivery of Alerts
and Price requests powered by Go.

28. Api_benchmark
Our Go tool to make requests to the Esoko API
checking for status and also providing
benchmarking of transactions powered by Go.

29. More information

30. Tour and Tutorials
Do not take my word for it, take the tour of Go
● golang.org
● tour.golang.org

31. Tour and tutorials … continued
You may find other talks by the Google Go
team interesting
● go get code.google.com/p/go.talks
● go get code.google.com/p/go.talks/present
And more and more youtube videos

32. Tour and tutorials … continued
Join the Go community
● golang-nuts google group
● Go+ on Google+
● @go_nuts at Twitter
Check out the Go Blog
● blog.golang.org

33. Thank you
Nii Nai
Esoko
http://www.esoko.com
@ttousai