The document discusses the Go programming language, highlighting its simplicity and efficiency compared to other languages such as C, C++, and Python. It provides a historical context of Go's development, mentioning key figures and milestones in its timeline from design to open source. Additionally, it emphasizes Go's unique blend of high-level and low-level language features, asserting its position as a modern programming solution.

1. Go with the Flow
Nicola Larosa

2. Does Go really go with the flow?
Or does it rock the boat?
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3. The Gopher
Renee French The Go Gopher
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4. The name
Go
not "golang"
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5. The designers
Robert Griesemer: HotSpot, V8
Rob Pike: Unix, Plan9, UTF-8
Ken Thompson: Unix, UTF-8
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6. Where it all begun
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7. Where it goes on
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8. Why
Because of this
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9. Also this
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10. Some numbers
C: #include <stdio.h> reads 360 lines from 9 files
C++: #include <iostream> reads 25,326 lines from 131 files
Objective-C: #include <Cocoa/Cocoa.h> reads 112,047 lines
from 689 files
In Go, import "fmt" reads one file: 195 lines summarizing 6
dependent packages
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11. C++ complexity
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different language subsets
hard to read code
poorly documented code
hard to write automatic tools
cost of updates

12. What to do?
A new programming language of course!
They know how to make one, after all.
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13. Go with the Flow Nicola Larosa 13/35

14. Simplicity
"Are you quite sure that all
those bells and whistles,
all those wonderful facilities
of your so-called powerful
programming languages,
belong to the solution set
rather than the problem set?"
- Edsger W. Dijkstra
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15. Keywords, documentation
Language Version Keywords Pages
C K&R, 1988 32 238
C 11 2011 44 683
C++ 1990 48 480
C++ 14 2014 86 1330
Java SE 8 50 788
C# 4.0 77 538
Javascript ECMA-262 41 566
Python 3.5 33 141
Go 2012 25 98
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16. Comparisons
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Python, Ruby: slow (computer), fast (human)
JavaScript: slow-ish (computer), fast-ish (human)
Java: slow start-up, verbose
C: fast (computer), slow (human)
C++: fast (computer), even slower (human)

17. Comparison chart
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18. Quote
"Go seems as perfectly in between C and Python:
it can be seen as a modernized C,
or like a super-optimized Python."
-- Enrico Franchi
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19. A "mid-level" language
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much of the simplicity of high-level languages like Python
much of the speed of low-level languages like C
little of the complexity of "side-level" beasts like C++ and Scala

20. Lineage
"In 1960, language experts from America and Europe
teamed up to create Algol 60.
In 1970, the Algol tree split into the C and the Pascal branch.
~40 years later, the two branches join again in Go.
Let's see if Go can enjoy an equally long run as its
predecessors!"
-- Robert Griesemer, GopherCon 2015
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21. Timeline
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2007-2008: design
2009/11: open source
2012/03: 1.0
2013/12: 1.2
2015/08: 1.5
2016/02: 1.6

22. Runtime
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Goroutine scheduler
Garbage collection
Network polling

23. Goroutine mapping
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24. Goroutine remapping
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25. New 1.5 garbage collector
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26. GC comparison
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27. 1.5 GC
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28. In the wild #1
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29. In the wild #2
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30. In the wild #3
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31. The website: golang.org
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32. The book
2015, covers up to Go 1.5
gopl.io
github.com/adonovan/gopl.io
github.com/teknico/gopl.io
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33. That guy
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34. These slides
github.com/ajstarks/deck
bitbucket.org/teknico/codemotion-rome-2016
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35. Questions!
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